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BIOLOGY (1417 journals)

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Journal Cover Journal of Applied Ichthyology
  [SJR: 0.51]   [H-I: 44]   [6 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 0175-8659 - ISSN (Online) 1439-0426
   Published by John Wiley and Sons Homepage  [1612 journals]
  • Nineteen novel microsatellites in Chinese lake gudgeon Sarcocheilichthys
           sinensis Bleeker, 1971
    • Authors: Y.-B. Shen; R.-Q. Wang, J.-Q. Ren, H.-T. Fu, X.-M. Yang, J. Li
      Abstract: Nineteen polymorphic microsatellites isolated from a partial genomic DNA library of Sarcocheilichthys sinensis enriched for CA repeats were developed. Variability was tested on 48 unrelated individuals collected from Jiangsu province, China. Observed heterozygosity ranged from 0.200 (Ss236) to 1.00 (Ss223, Ss224), whereas the expected heterozygosity ranged from 0.213 (Ss232) to 0.939 (Ss224). Shannon's information index ranged from 0.405 (Ss236) to 2.988 (Ss224). Sixteen of the 19 microsatellites conformed to Hardy–Weinberg equilibrium. These microsatellites can be used for the evaluation of genetic parameters in populations to supply valuable information for conservation management.
      PubDate: 2016-11-21T02:12:17.376797-05:
      DOI: 10.1111/jai.13229
       
  • Development of 18 microsatellite markers for the white-streaked grouper,
           Epinephelus ongus (Bloch, 1790)
    • Authors: A. Nanami; K. Saitoh, M. Sekino
      PubDate: 2016-11-21T02:12:05.718101-05:
      DOI: 10.1111/jai.13234
       
  • Iridophoroma in Indian mackerel, Rastrelliger kanagurta (Cuvier, 1816)
    • Authors: V. Singaravel; A. Gopalakrishnan, K. Raja
      PubDate: 2016-11-11T06:20:58.850711-05:
      DOI: 10.1111/jai.13226
       
  • First record of Odontaspis ferox (Risso, 1810) in the temperate
           south-eastern Indian Ocean from in situ observations in a deep-water
           canyon using baited video
    • Authors: C. M. Wellington; C. B. Wakefield, W.T. White
      PubDate: 2016-11-07T02:06:22.106508-05:
      DOI: 10.1111/jai.13190
       
  • Trophic role of demersal mesopredators on rocky reefs in an equatorial
           Atlantic Ocean island
    • Authors: E. Pinheiro; C. A. Layman, J. P. Castello, T. S. Leite
      Abstract: The decrease in the number of sharks around Saint Peter and Saint Paul Archipelago (SPSPA) may impact food web structure. We investigated trophic relationships in the shallow rocky reefs of the SPSPA using stable isotopes and stomach contents with a particular focus on three abundant mesopredators: Caranx lugubris, Enchelycore nigricans and Muraena pavonina. Food web structure was described using samples of the most abundant basal resources, fishes and invertebrates, which were collected in April and October 2012. Individuals of the three focal species (n = 138: C. lugubris, n = 56; E. nigricans, n = 18; M. pavonina, n = 64) were collected during four expeditions to SPSPA (April and October of 2011 and 2012). Results suggest that this shallow water food web is supported by trophic pathways originating from benthic resources. Stable isotope data suggest potential competitive interactions between the whitespot moray and the other two mesopredators. Conversely, stomach content data suggest little niche overlap in the three focal species, but these data must be interpreted carefully because of the small sample sizes and restricted temporal sampling windows. All three mesopredators have a significant, albeit weak, relationship between body size and δ15N, suggesting ontogenetic diet shifts. These data contribute baseline information to assess shifts in food web structure that may stem from top predator decline in this unique ecosystem.
      PubDate: 2016-10-31T23:46:26.9898-05:00
      DOI: 10.1111/jai.13204
       
  • Combining geometric morphometrics and genetic analysis to identify species
           of Opisthonema Gill, 1861 in the eastern Mexican Pacific
    • Authors: C. I. Pérez-Quiñónez; C. Quiñónez-Velázquez, J. S. Ramírez-Pérez, F. J. Vergara-Solana, F. J. García-Rodríguez
      Abstract: Studies focusing on the specific identification of the taxonomic cast within the genus Opisthonema are scarce and contradictory, in spite of this species commercial importance and of the potential ecological impact that fisheries may have on the pelagic ecosystem. In this study, the specific composition of thread herrings Opisthonema (O. bulleri, O. medirastre, and O. libertate) in the southeastern region of the Gulf of California was identified using meristic characters, morphometric data, and mtDNA sequences. In this paper we supported the hypothesis that the commercial catch comprises three evolutionary entities with meristic and morphometric differences. The results were based on the number of ceratobranchial gill rakers, the presence of spicules on the gill rakers, the form of insertion of the gill rakers base onto the ceratobranchial segment, the geometric morphometrics of body shape, and the genetic distances from a fragment of Cytochrome Oxidase Subunit I gene (COI) of mtDNA. Specimens of Pacific thread herring were obtained from landings of the small pelagic fleet at Mazatlan, Sinaloa during 2011–2012. Taxonomic categories were assigned to 1060 individuals according to the measurement of meristic characters. A total of 228 thread herrings O. bulleri, (n = 76), O. medirastre (n = 76), and O. libertate (n = 76) were used in the morphometric analysis, and 25 specimens (O. bulleri n = 8, O. medirastre n = 7, and O. libertate n = 10) were used for genetic comparisons. The morphometric results showed differences among the three groups that had been previously identified using meristic characters, giving support to the existence of three discrete morphotypes. The percentage of sequence divergence of the COI gene supports the existence of three clades. Genetic distances were considerably lower within each clade than between clades. The results of this study provide sufficient evidence for the existence of three Pacific thread herring species in the southern Gulf of California.
      PubDate: 2016-10-28T00:36:31.303548-05:
      DOI: 10.1111/jai.13051
       
  • Adequate dietary protein level enhances stress resistance and immune
           status of blunt snout bream (Megalobrama amblycephala Yih, 1955)
    • Authors: H.-M. Habte-Tsion; M.-C. Ren, X.-P. Ge, V. Kumar, B. Liu, J. Xie, R.-L. Chen
      Abstract: This study hypothesized that an optimum dietary protein level might play an important role in improving stress tolerance, enhancing an immune function, and ultimately minimizing temperature stress. For this purpose, the present study conducted a 10-week feeding trial followed by a 7-day stress experiment to evaluate the effects of dietary protein levels (28%–36%) on the physiological performances and hepatic Hsp70 gene expression in blunt snout bream Megalobrama amblycephala fry under a high temperature challenge. Fish fry (initial weight, 16.08 ± 0.03 g, n = 25) were fed with their respective diets to apparent satiation, and samples taken once before stress and four times during high temperature stress days (0.125, 0.5, 2 and 7 days). Serum total protein and cholesterol contents before stress were affected by dietary protein levels; during stress these parameters showed no significant changes up until day 2, showing some changes thereafter. Regardless of 0.125, 0.5, 2 or 7 days during stress, cortisol and aspartate aminotransferase levels in the group fed 32% dietary protein were significantly lower than in the other groups. At 0.125, 0.5 or 2 days during stress, the complement component 3 (C3) and 4 (C4) levels increased significantly up to certain levels, declining thereafter. The expression level of Hsp70 mRNA before stress was not affected by dietary protein levels, but increased significantly from 0.125 to 0.5 days during stress, and was reduced thereafter. Overall, low cortisol and high C3, C4 and Hsp70 mRNA levels were found in the group fed 32% protein throughout the stress experiment, which indicated that an adequate protein level enhances stress resistance and immunity in fish.
      PubDate: 2016-10-24T01:45:41.548662-05:
      DOI: 10.1111/jai.13219
       
  • Length–weight relationships of 20 fish species from Bahía de Matanchen,
           in the southeast Gulf of California, Mexico
    • Authors: J. R. Flores-Ortega; J. Granados-Amores, I. Zavala-Leal, J. T. Nieto-Navarro, D. S. Palacios-Salgado
      Abstract: Length–weight relationship (LWR) parameters were determined for 20 fish species belonging to 14 genera and seven families. The fishes were collected monthly (May 2013 to February 2014) by soft-bottom trawls in Bahía de Matanchén, southeast of the Gulf of California. Sizes ranged between 5.5 and 36.0 cm total length (TL) and weighed between 1 and 901 g. The allometric coefficient (b) of the LWR varied from 2.638 for Chloroscombrus orqueta to 3.668 for Neopisthopterus tropicus. This is the first report of LWR estimations for 15 of the species.
      PubDate: 2016-10-24T01:45:33.54436-05:0
      DOI: 10.1111/jai.13227
       
  • Habitat rehabilitation for juvenile fish in urban waterways: A case study
           from Berlin, Germany
    • Authors: A. Weber; C. Wolter
      Abstract: This study examines the improvement of juvenile fish recruitment by technical rehabilitation measures implemented in two urban waterways in Berlin, Germany: the River Spree and the Teltow Canal. Rehabilitation sites provide new littoral habitats protected from navigation-induced flow and wake wash and are intended to improve habitat quality for juvenile fish and to support urban fish diversity. Both sites and four control sites with common embankments have been sampled monthly by point electric fishing (875 dips in total) from May to September 2009. In total, 6,243 fish were caught representing 12 species. Two of the species, roach (Rutilus rutilus) and perch (Perca fluviatilis), dominated the fish community, comprising 81.5% and 16.1% of the total catch. Nine species were rare, with relative abundances
      PubDate: 2016-10-11T04:31:32.425645-05:
      DOI: 10.1111/jai.13212
       
  • Nine novel microsatellites for the cavefish (Triplophysa rosa Chen &
           Yang, 2005)
    • Authors: S. Liu; A. Ludwig, Z. Peng
      PubDate: 2016-10-11T04:31:10.395682-05:
      DOI: 10.1111/jai.13231
       
  • Range-wide assessment of pallid sturgeon Scaphirhynchus albus (Forbes &
           Richardson, 1905) relative condition
    • Authors: K. D. Steffensen; G. E. Mestl, Q. E. Phelps
      Abstract: Pallid sturgeon Scaphirhynchus albus relative condition has been observed to be declining along the Nebraska reach (rkm 1212.6–801.3) of the Missouri River over the past several years; therefore, pallid sturgeon capture data was synthesized from the entire Missouri and Middle Mississippi rivers to document and compare how pallid sturgeon condition varies spatially and temporally throughout much of their current range. The study area was subdivided into four river reaches based on a priori statistical differences for pallid sturgeon catches from 2003 to 2015. Pallid sturgeon in the Middle Mississippi River (Alton Dam [rkm 321.9]) to the confluence of the Ohio River (rkm 0.0) were in the best condition while pallid sturgeon in the Middle Missouri River (Fort Randall Dam [rkm 1416.2]) to the Grand River confluence (rkm 402.3) were in the poorest condition. Furthermore, pallid sturgeon condition in the Upper Missouri River (Fort Peck Dam [rkm 2850.9] to the headwaters of Lake Sakakawea [rkm 2523.5] and lower Yellowstone River) and the Lower Missouri River (Grand River confluence to the Mississippi River confluence [rkm 0.0]) were significantly less than in the Middle Mississippi River but significantly higher than the Middle Missouri River. Temporally, pallid sturgeon condition was highly variable. Relative condition in the Middle Mississippi River was consistently above average (Kn = 1.1). Comparatively, Kn throughout the Missouri River rarely exceeded “normal” (Kn = 1.0), with Kn in the middle and lower reaches of the Missouri River having declined to the lowest observed. As pallid sturgeon recovery efforts continue, understanding the range-wide differences and effects on condition could be critical, as poor condition may cause maturation delays, reproductive senescence or even mortality, which affects the likelihood of natural reproduction and recruitment.
      PubDate: 2016-10-04T07:32:07.138675-05:
      DOI: 10.1111/jai.13206
       
  • Swimming performance of adult bighead carp Hypophthalmichthys nobilis
           (Richardson, 1845) and silver carp H. molitrix (Valenciennes, 1844)
    • Authors: J. J. Hoover; D. P. Zielinski, P. W. Sorensen
      Abstract: Although the movement of invasive bighead carp (Hypophthalmichthys nobilis) and silver carp (H. molitrix) in the Upper Mississippi River system is dependent on their ability to swim through its numerous lock-and-dams, the swimming performance of adults of these species is at present unknown. Using a large (2,935-L) mobile swim tunnel, the swimming performance of adult bighead and adult silver carp was quantified at water velocities that challenged them to exhibit either prolonged and/or burst swimming (76–244 cm/s) with fatigue times of less than 10 min. Simple log-linear models best described the relative swim speed to fatigue relationships for both species. Under these conditions, the swimming performances of adult bighead and silver carp were similar to several species of adult fishes native to the Mississippi River system, but relatively low (
      PubDate: 2016-09-29T05:35:32.069108-05:
      DOI: 10.1111/jai.13199
       
  • Karyotype and genome size of an endangered cavefish (Triplophysa rosa Chen
           & Yang, 2005)
    • Authors: Y. Niu; Q. Zhao, H. Zhao, A. Ludwig, Z. Peng
      PubDate: 2016-09-26T02:06:29.082937-05:
      DOI: 10.1111/jai.13209
       
  • Reproduction of the internal inseminator Trachelyopterus galeatus
           (Linnaeus, 1766) (Siluriformes: Auchenipteridae)
    • Authors: D. M. Roriz Lemes; B. Vizioli, L. Marcon, N. Bazzoli
      Abstract: Studied was the reproductive activity of Trachelyopterus galeatus using microscopic analyses of gonads and biological indices. To evaluate the reproductive biology of T. galeatus, which is an important species in the Jequitinhonha River basin, Minas Gerais, Brazil, 254 males and 372 females were captured between May 2012 and April 2013 from the Irapé Reservoir using gillnets with meshes of various sizes. Average total length of males was 13.3 ± 2.1 and 14.3 ± 2.3 cm for females. Females were more abundant than males (1.4 females:1 male) in all total length classes. The reproductive peak of T. galeatus occurred between November and February, when the biological indices related to reproduction were highest and the physical‐chemical water parameters were most favourable for reproduction in this Neotropical environment. Trachelyopterus galeatus reproduces throughout the year and is a partial spawner.
      PubDate: 2016-09-26T02:06:27.597356-05:
      DOI: 10.1111/jai.13205
       
  • Energy acquisition and retention by age‐0 and age‐1 paddlefish
           Polyodon spathula (Walbaum, 1792) in relation to size, growth, and rearing
           conditions in two Great Plains reservoirs and hatchery ponds
    • Authors: R. J. Hemingway; D. L. Scarnecchia
      Abstract: The objective of this study was to investigate lipid accumulation and storage in age‐0 and age‐1 paddlefish Polyodon spathula (Walbaum, 1792) in relation to age, stock, year, and growth. Juvenile paddlefish were collected from three locations in North Dakota and Montana, USA, during July and August of 2011 and 2012 and proximate analysis was used to determine lipid content. RNA/DNA ratios were used as an index of growth rates. Differences in age‐based lipid accumulation and storage in juvenile paddlefish suggest a split allocation between growth and lipid storage, with growth being the highest initial priority and emphasis on energy storage occurring at a larger size, later in life. Differences in lipid allocation between stocks indicate that allocation is influenced by hatchery/wild rearing conditions. Differences within and between year‐classes are consistent with field evidence observed in 2012 of a strong 2011 year‐class, and indicate that during productive times, paddlefish may allocate energy to both body growth and lipid reserves, and that allocation differs among years. The lack of a relationship between RNA/DNA ratio and lipid does not support a physiologically exclusive allocation strategy between growth and lipid. Evidence from this and other studies suggests rather that an emphasis on growth, some energy storage, and a large rostrum size in relation to overall fish length in age‐0 and age‐1 fish, may be adaptive in avoiding predation while accruing necessary energy reserves for overwintering. Although this study also provides reference information regarding proximate composition of wild and hatchery origin juvenile paddlefish, much more study is needed into the relationships among growth, low and high lipid groups, lipid allocation in juvenile paddlefish as well as the existence and timing of allocation changes between growth and storage. To aid in understanding paddlefish survival and year‐class strengths, these relationships also need to be linked to inter‐annual differences in early rearing environments for age‐0 and age‐1 fish.
      PubDate: 2016-09-26T02:06:17.296268-05:
      DOI: 10.1111/jai.13200
       
  • Length–weight and length–length relationships of five fish species in
           the Atrai River, Dinajpur, Bangladesh
    • Authors: M. R. Islam; M. J. Mia
      Abstract: A total of 502 specimens were obtained during monthly samplings from July to December 2015, by fishermen using seine nets, gillnets and cast nets. Length–weight (LWRs) and length–length (LLRs) relationships were estimated for five fish species collected from the Atrai River in the northwestern region of Bangladesh. The values of slope (b) in LWRs (r2 > .913, p  .897, p 
      PubDate: 2016-09-22T00:55:36.43387-05:0
      DOI: 10.1111/jai.13210
       
  • Agonistic trials with mirrors do not elicit the same aggressiveness of a
           real trial in the matrinxã fish, Brycon amazonicus (Spix & Agassiz, 1829)
           
    • Authors: M. Serra; C. P. B. Wolkers, M. M. M. Mello, E. C. Urbinati
      Abstract: This study tested the efficacy of mirror trials in studying aggressiveness in the matrinxã fish, Brycon amazonicus. The hypothesis was that a mirror would elicit an aggressive response in B. amazonicus juveniles, but show different behavioral and physiological profiles than those observed in trials with real opponents. Fish were tested using either a mirror trial (n = 7) or a real trial (n = 7), that is, placed alone with a mirror or paired with a same‐sized opponent, respectively. All trials lasted for 20 min and took place in 96‐L aquaria with water temperatures of 28°C. Fish in mirror trials exhibited less locomotion (mirror: 423.3 ± 39.1; real trial: 735.1 ± 31.9; p 
      PubDate: 2016-09-22T00:55:30.463537-05:
      DOI: 10.1111/jai.13198
       
  • Length–weight and length–length relationships of three endemic fish
           species from the Yarlung Tsangpo River, China
    • Authors: J. Shao; B. S. Ma, X. Yang, C. X. Xie, B. Huo, Q. W. Wei
      Abstract: The length‐weight (LWR) and length‐length relationships (LLR) were estimated for three endemic fish species, including Schizothorax waltoni Regan, 1905, Schizothorax oconnori Lloyd, 1908, and Schizothorax macropogon Regan, 1905 in the Yarlung Tsangpo River. A total of 399 specimens were collected using gillnets and cast nets during February to August 2012 and March to May 2013. No information regarding length–weight and length–length relationships was reported previously in FishBase for these three endemic species.
      PubDate: 2016-09-22T00:55:23.814276-05:
      DOI: 10.1111/jai.13195
       
  • Reproductive biology of Pseudoplatystoma corruscans (Spix and Agassiz,
           1829) and Pseudoplatystoma reticulatum (Eigenmann and Eigenmann, 1889),
           two species of fisheries importance in the Cuiabá River Basin, Brazil
    • Authors: E. Barzotto; M. Oliveira, L. Mateus
      Abstract: The aim of this study was to compare the reproductive processes of two large catfishes, Pseudoplatystoma corruscans and Pseudoplatystoma reticulatum, from the Cuiabá River Basin. The reproductive process were assessed to: (i) characterizing the population structure and sex ratio; (ii) determining the reproductive period; (iii) estimating and quantify the nutritional status and energy reserves and their relationships with reproductive stages; and (iv) estimating the body length at first gonad maturation (TL50). Individuals were sampled monthly from July 2006 to February 2008 using gill nets, seine nets, hooks, casting nets and trotlines. In addition, 294 individuals were obtained from the artisanal fishery in the city of Cuiabá, Mato Grosso state, Brazil. Total lengths were greater for females for both species, with no significant difference in the sex ratio; growth was considered isometric, except for P. corruscans males. Peak reproductive activity was in December and January. Differences in the hepatosomatic index (HSI) in P. corruscans depended on the gender. In P. reticulatum the HSI did not differ between sexes or among developmental stages. For P. corruscans, the estimated mean total length at first maturity (TL50) was 62.92 cm, and for P. reticulatum 57.84 cm. Action to ensure the protection of the fish stocks should consider their reproduction processes, which are important for the equilibrium of these populations in the Cuiabá River, as well as for fisheries management.
      PubDate: 2016-09-22T00:55:22.910311-05:
      DOI: 10.1111/jai.13162
       
  • Length–weight relationships of seven fish species from a fish landing
           port at Sungai Udang, Penang, Malaysia
    • Authors: Y. G. Seah; Y. N. Chua, C. W. Sam, H. Y. Teoh
      Abstract: The length–weight relationships (LWRs) are described for seven fish species from four families (Ariidae, Clupeidae, Leiognathidae and Sciaenidae) inhabiting Penang waters. A total of 471 specimens were sampled and measured from 19 to 20 January 2015, using a bottom trawl net with a 38 mm mesh size of cod‐end. No information regarding LWRs was reported previously in FishBase for Cryptarius truncatus, Escualosa thoracata, Johnius carouna, Nuchequula blochii, Plicofollis argyropleuron, Secutor hanedai or Secutor megalolepis, and the study also provides a new FishBase record of maximum total length for Escualosa thoracata (10.6 cm), Secutor hanedai (9.1 cm) and Secutor megalolepis (7.5 cm).
      PubDate: 2016-09-20T03:45:47.857953-05:
      DOI: 10.1111/jai.13216
       
  • New record of Scomberesox scombroides (Richardson, 1843) (Beloniformes:
           Scomberesocidae) in southwestern waters of Patagonia and an update on its
           geographic distribution on the Argentine continental shelf
    • Authors: N. D. Bovcon; P. D. Cochia, J. Ruibal‐Núñez, J. J. Romero, M. E. Góngora
      PubDate: 2016-09-20T03:45:45.101998-05:
      DOI: 10.1111/jai.13208
       
  • Length–weight relationships of three fish species from the Yangtze
           River, China
    • Authors: X. Shi; W. Jiang, S. Ye, M. Duan, G. Liu, X. Hu, D. Liu
      Abstract: Length–weight relationships (LWRs) were determined for three endemic fish species [Gobiobotia filifer (Garman, 1912), Homatula potanini (Günther, 1896) and Xenophysogobio boulengeri (Tchang, 1929)] from the Yangtze River in China. Samples were obtained between April 2008 and June 2012 using various types of fishing gear and electroshock fishing techniques. For each species, the sample size, length range, weight range, LWR, 95% confidence intervals of a and b, and coefficient of correlation were determined. Prior to this study, the LWRs for two species [Gobiobotia filifer (Garman, 1912) and Homatula potanini (Günther, 1896)] were unknown.
      PubDate: 2016-09-20T03:45:36.172048-05:
      DOI: 10.1111/jai.13182
       
  • Phytase can reduce theneedfor monocalcium phosphate supplementation in
           soybean and rapeseed meal‐based diets of black sea bream, Acanthopagrus
           schlegelii (Bleeker, 1854)
    • Authors: Y.‐B. Lu; S.‐D. Xu, Y.‐T. Liu, T. Zhang, H.‐F. Du, Q.‐H. Ai
      Abstract: A feeding trial was conducted to study the effect of partial replacement of dietary monocalcium phosphate (MCP) with phytase on growth performance, feed utilization and phosphorus discharge in black sea bream, Acanthopagrus schlegelii. In the feeding trial, the control diet (designated as P1.5) was prepared with 1.5% MCP but without phytase, and the three other diets (designated as PP1.0, PP0.5 and PP0, respectively) were supplemented with 1.0%, 0.5% and 0% MCP, respectively, along with 200 mg (400 U) phytase/kg diet in each. Each diet was tested in triplicate tanks and fish were fed twice daily to satiation. After an 8‐week feeding trial in indoor flow‐through cylindrical fibreglass tanks (25 fish per tank, initial body weight: 11.5 ± 0.12 g), fish fed with PP1.0 and PP0.5 had no significant change in weight gain (WG), specific growth rate (SGR), protein efficiency rate (PER) or feed conversion ratio (FCR) compared to the control (p > .05), whereas fish fed with PP0 showed a significantly lower growth performance in the above parameters (p 
      PubDate: 2016-09-19T00:16:12.816159-05:
      DOI: 10.1111/jai.13150
       
  • Two chemical marking procedures with Alizarin Red for piava Leporinus
           obtusidens (Valenciennes, 1837) juveniles
    • Authors: S. Hermes‐Silva; M. Roza de Abreu, E. Zaniboni‐Filho
      PubDate: 2016-09-14T08:24:05.577237-05:
      DOI: 10.1111/jai.13189
       
  • New record and range extension of the big‐scale sand smelt Atherina
           boyeri Risso, 1810 (Atherinidae) in the Devegecidi Dam Lake, Tigris River
           basin, Turkey
    • Authors: E. Ünlü; Ö. Gaygusuz, T. Çiçek, S. Bilici, B. W. Coad
      Abstract: The big‐scale sand smelt, Atherina boyeri, is recorded from the Devegecidi Dam Lake in 2016, the first record of this invasive species in the Tigris River basin, with potential to extend to all countries in the Middle East. The smelts were caught with a trawl net mesh size of 6 mm. The captured specimens are described and compared. Records of A. boyeri from Turkish inland waters are summarised from the literature.
      PubDate: 2016-09-14T08:24:04.373503-05:
      DOI: 10.1111/jai.13192
       
  • Reproductive cycle of Triplophysa stenura (Herzenstein, 1888)
           (Balitoridae: Nemacheilinae) from the Yarlung Tsangpo River in the Tibetan
           Plateau, China
    • Authors: J. Y. Xie; Y. Xia, Y. Yan, W. T. Liang, C. Ren
      Abstract: The reproductive biology of Triplophysa stenura, an indigenous cyprinid species from the Qushui County in the middle of the Yarlung Tsangpo River in the Tibetan Plateau, China, was investigated by bimonthly sampling from May 2014 to April 2015 using electrofishing. The gonadosomatic index (GSI) of T. stenura differed significantly between males and females over the seasonal trend, indicating that spawning extends from March (shortly after the ice melts) to May, as observed for indigenous species in response to environmental conditions on the cold plateau. Average oocyte diameter was 0.66 ± 0.13 mm, whereby the oocyte diameter distribution exhibited a clear seasonal pattern as the temporal pattern of GSI. Absolute fecundity of T. stenura was 3999 eggs/individual, which increased significantly with the increase in fish size and gonad weight, demonstrating the relationship of an exponential equation between them.
      PubDate: 2016-09-09T23:20:48.821397-05:
      DOI: 10.1111/jai.13166
       
  • Competitive interactions under experimental conditions affect diel feeding
           of two common aquaculture fish species Labeo calbasu (Hamilton, 1822) and
           Cirrhinus cirrhosus (Bloch, 1795) of southern Asia
    • Authors: M. M. Rahman; S. R. Balcombe
      Abstract: The effects of interspecific competition on grazing between two important aquaculture species, mrigal carp Cirrhinus cirrhosis and orangefin labeo Labeo calbasu, in single and in dual combinations were observed in experimental tanks. This study demonstrated that the presence of a competitor did not cause C. cirrhosis to shift its diel feeding patterns. That said, both total food intake and food preference were negatively affected in C. cirrhosis by the presence of a superior competitor, L. calbasu. The feeding patterns of L. calbasu became diurnal in the presence of C. cirrhosus, suggesting highly complex competitive interactions between the two species. That L. calbasu was specifically able to shift circadian feeding patterns to maximize energy intake in the presence of a competitor would suggest that it would be a suitable species to stock in a mixed species aquaculture system.
      PubDate: 2016-08-11T01:12:20.733827-05:
      DOI: 10.1111/jai.13157
       
  • Gymnocypris chui Tchang, Yueh & Hwang, 1964 and Gymnocypris scleracanthus
           Tsao, Wu, Chen & Zhu, 1992 from Lake Langcuo, Qinghai-Tibet Plateau
    • Authors: R.-Y. Zhang; Y.-T. Tang, C.-G. Feng, S.-J. Liu, K. Zhao
      Abstract: This study presents length-weight relationships (LWRs) for two sympatric species of the subfamily Schizothoracinae (Cyprinidae), Gymnocypris chui and G. scleracanthus, captured in Lake Langcuo in Tibet, China. A total of 193 specimens were collected in June and July of 2014 and 2015 using gill nets of different mesh sizes (mesh size: 2 × 2 cm, 3 × 3 cm). Specimens included 76 G. chui and 117 G. scleracanthus. The values of parameter b in the LWRs equations were estimated as 2.875 for G. chui, and 2.773 for G. scleracanthus, respectively. These are the first LWRs records for the two sympatric species.
      PubDate: 2016-08-08T10:03:49.373257-05:
      DOI: 10.1111/jai.13143
       
  • Effects of sustained predation by fast-growing transgenic common carp
           
    • Authors: T. B. Zhu; L. H. Zhang, T. L. Zhang, Y. P. Wang, W. Hu, E. Ringø, Z. Y. Zhu
      Abstract: The present study addressed the effects of growth hormone-transgenic and non-transgenic common carp (Cyprinus carpio L.) predation on the community and populations of four gastropod species cultured in artificial environments. After a 110-day population-based predation experiment (three replicate pools [16 m2] for each genotype with one fish [total length 45.0~51.4 cm] and 150 Bellamya aeruginosa (Reeve 1863) per pool), there were no significant effects of predation by either transgenic or non-transgenic carp on the biomass, number, or size selectivity of the population. Following a 10-day community-based predation experiment (three replicate pools [16 m2] for each genotype with one fish [total length 45.0~50.5 cm] and 150 Alocinma longicornis (Benson 1842), 100 Parafossarulus sinensis (Neunayr 1883), 55 B. aeruginosa, and 33 Radix auricularia L. per pool), the consumption rate and the number of gastropods predated by transgenic carp were 2.60 times and 2.85 times higher, respectively, than those of non-transgenic carp. Furthermore, the biomass of A. longicornis, P. sinensis and B. aeruginosa consumed by transgenic carp was significantly (p 
      PubDate: 2016-07-13T02:30:34.853997-05:
      DOI: 10.1111/jai.13130
       
  • Issue Information
    • First page: 1001
      PubDate: 2016-11-14T07:01:45.140396-05:
      DOI: 10.1111/jai.12888
       
  • Habitat use and population characteristics of potentially spawning
           shovelnose sturgeon Scaphirhynchus platorynchus (Rafinesque, 1820), blue
           sucker (Cycleptus elongatus (Lesueur, 1817), and associated species in
           the lower Wisconsin River, USA
    • Authors: J. Lyons; D. Walchak, J. Haglund, P. Kanehl, B. Pracheil
      First page: 1003
      Abstract: The goal of this study was to compare the possible locations, timing, and characteristics of potentially spawning shovelnose sturgeon (Scaphirhynchus platorynchus), blue sucker (Cycleptus elongatus), and associated species during the spring of 2007–2015 in the 149-km-long lower Wisconsin River, Wisconsin, USA, a large, shallow, sand-dominated Mississippi River tributary. A 5-km index station of two pairs of rocky shoals surrounded by sandy areas was electrofished for shovelnose sturgeon and blue sucker in a standardized fashion a total of 40 times from late March through mid-June, the presumed spawning period. On one date in 2008 and two dates in 2012, all rocky shoals and adjacent sandy areas in the lowermost 149 km of the river were also electrofished for both species. Shovelnose sturgeon and blue sucker appeared to spawn in the limited rocky areas of the river along with at least four other species: mooneye (Hiodon tergisus), quillback (Carpiodes cyprinus), smallmouth buffalo (Ictiobus bubalus), and shorthead redhorse (Moxostoma macrolepidotum), usually at depths of 0.8–2.0 m and surface velocities of 0.4–1.0 m/s. However, apparently spawning shovelnose sturgeon were found only on mid-channel cobble and coarse gravel shoals within a single 7-km segment that included the 5-km index station, whereas apparently spawning blue suckers were encountered on these same shoals but also more widely throughout the river on eroding bluff shorelines of bedrock and boulder and on artificial boulder wing dams and shoreline rip-rap. Both species showed evidence of homing to the same mid-channel shoal complexes across years. Blue sucker tended to concentrate on the shoals earlier in the spring than shovelnose sturgeon, usually from late April through mid-May at water temperatures of 8.0–15.5°C along with quillback and shorthead redhorse. In comparison, shovelnose sturgeon usually concentrated on the shoals from mid-May through early June at 13.5–21.8°C along with mooneye and smallmouth buffalo. Based on recaptures of tagged fish, at least some shovelnose sturgeon and blue sucker returned to the shoals at one-year intervals, although there was evidence that female blue sucker may have been more likely to return at two-year intervals. Most shovelnose sturgeon could not be reliably sexed based on external characteristics. Spawning shovelnose sturgeon ranged from 487 to 788 mm fork length, 500–2400 g weight, and 5–20 years of age, whereas spawning blue sucker ranged from 495 to 822 mm total length, 900–5100 g weight, and 5–34 years of age, although age estimates were uncertain. Females were significantly larger than males for both species although there was overlap. Growth in length was negligible for tagged and recaptured presumably spawning shovelnose sturgeon and low (3.5 mm/y) for blue sucker, suggesting that nearly all growth may have occurred prior to maturity and that fish may have matured at a wide range of sizes.
      PubDate: 2016-11-07T02:06:33.97932-05:0
      DOI: 10.1111/jai.13201
       
  • Documentation of lake sturgeon (Acipenser fulvescens Rafinesque, 1817)
           recovery and spawning success from a restored population in the
           Mississippi River, Missouri, USA
    • Authors: J. T. Buszkiewicz; Q. E. Phelps, S. J. Tripp, D. P. Herzog, J. S. Scheibe
      First page: 1016
      Abstract: Lake sturgeon Acipenser fulvescens are considered rare and were nearly extirpated in the Mississippi River in Missouri by 1931 as a result of overfishing and habitat fragmentation. Propagation efforts have been implemented by the Missouri Department of Conservation since 1984 as means to restore the lake sturgeon population. Although recent population increases have been observed, a formalized evaluation to determine if lake sturgeon are self-sustaining in the Missouri portion of the Mississippi River has not been completed. Therefore, the objectives of this study were to: (i) determine the proportion of reproductive individuals, (ii) evaluate seasonal movement patterns of adults, and (iii) validate purported spawning locations within the Mississippi River in Missouri. Lake sturgeon catch data indicated that approximately 11 percent of the population are reproductively mature. Additionally, telemetry data confirms that the greatest movement by adult lake sturgeon occurs during spring, which suggests spawning behavior. Finally, it was possible to document lake sturgeon embryos and emergent fry larvae below Melvin Price Locks and Dam 26 in the Upper Mississippi River near St. Louis, Missouri. Water velocity, depth, and substrate size were measured at this location and embryos were collected and hatched in the laboratory. River gage data suggest that spawning behavior may have been elicited by a large influx of water during a drawdown period of water above the dam. This study represents the first documented spawning of A. fulvescens in the Mississippi River and highlights the success of recovery efforts in Missouri.
      PubDate: 2016-10-24T01:45:28.546914-05:
      DOI: 10.1111/jai.13211
       
  • Comparison of a rigid grid to a square-mesh panel in size selection for
           commercial fishing in the Persian Gulf shrimp trawl fishery
    • Authors: M. Eighani; S. Y. Paighambari, S. Eayrs
      First page: 1026
      Abstract: Two bycatch reduction devices (BRDs): a juvenile and trash fish excluder device (JTED) and a square-mesh panel (SMP), were tested in the Persian Gulf shrimp fishery from a small-scale shrimp trawler in October–November 2012. Each device was alternatively tested by using a small-mesh cover net to retain individuals that escaped the BRDs. Three valuable fish species—tigertooth croaker (Otolithes ruber), silver pomfret (Pampus argenteus) and silver sillago (Sillago sihama)—were selected for detailed analyses. Average escapement rates by number for commercial species in the trawl nets with either JTED or SMP were calculated as 24% and 33%, respectively. There were significant differences in escapement rates for Otolithes ruber and Sillago sihama between JTED and SMP (p 
      PubDate: 2016-08-11T01:11:51.058855-05:
      DOI: 10.1111/jai.13148
       
  • Effects of varying natural mortality and selectivity on the assessment of
           eastern Baltic cod (Gadus morhua Linnaeus, 1758) stock
    • Authors: J. Horbowy
      First page: 1032
      Abstract: In 2014, the International Council for the Exploration of the Sea (ICES) was unexpectedly unable to provide an analytical assessment of eastern Baltic cod stock; factors such as data issues, assessment methodology, and the ecological situation of cod were indicated as the reasons for this failure. Some evidence suggests that the natural mortality (M) of cod could increase substantially in forthcoming years and that the selectivity could change. In this paper, age‐structured and stock‐production assessment models were applied to simulate the dynamics of cod stock; in the models, both constant and increasing natural mortalities were permitted. In the age‐structured model, the effects of selectivity related to the cod size on the cod assessment were also analysed. In addition, stock with characteristics similar to Baltic cod stock and increasing natural mortality was generated and assessed with the age‐structured model using both constant and increasing M. It was shown that models with increasing natural mortality of cod in recent years perform much better than models with constant natural mortality in terms of the distribution of residuals and retrospective patterns. The models with size‐dependent selectivity did not perform better than other standard assessments. The assessment of generated stock (where natural mortality was increasing) with constant natural mortality in the assessment model showed a poor distribution of residuals and strong retrospective patterns, similar to the ICES assessment with constant M. The conducted simulations strongly suggest that the main reason for the poor recent cod assessment is the increase in natural mortality, which is not considered in the assessment methodology.
      PubDate: 2016-09-23T23:20:32.617788-05:
      DOI: 10.1111/jai.13202
       
  • Selectivity of 50 mm T0 and T90 codends for commercial shrimp species in
           the Turkish deepwater trawl fishery, Eastern Mediterranean
    • Authors: M. C. Deval; G. Özgen, H. Özbilgin
      First page: 1041
      Abstract: The study compared the selectivity of 50 mm mesh size conventional (T0) and 90° turned mesh (T90) demersal trawl codends for four commercial shrimp species (Aristaeomorpha foliacea, Aristeus antennatus, Parapenaeus longirostris and Plesionika martia) in the Bay of Antalya in the eastern Mediterranean. Data were collected from 27 valid hauls using the covered codend method. Selectivity parameters were obtained using the logistic equation with the maximum likelihood method and by taking into account the between-haul variations. Results show that changing the codends from T0 to T90 increases the percentage of escapees for all four targeted shrimp species. According to species, a change in the mesh configuration significantly increases L50 by 7–14%. However, for the two commercially important red shrimp species (Aristaeomorpha foliacea and Aristeus antennatus), even the L50 values obtained in the T90 codend (23.3 mm) remain rather low for the release of sufficient numbers of immature specimens. First maturity sizes (FMS) for these two species are 38 and 30 mm, respectively; therefore, for their sustainable exploitation, additional management measures must be investigated including larger mesh sizes.
      PubDate: 2016-08-08T10:03:58.342707-05:
      DOI: 10.1111/jai.13128
       
  • A comparison of bridled and bridle-less ichthyoplankton nets in a variable
           flow estuarine environment
    • Authors: A. W. Francis; M. S. Knight
      First page: 1058
      Abstract: The effectiveness of bridled and bridle-less plankton nets for sampling ichthyoplankton from a fixed structure in a variable flow environment was examined. From 22 June to 19 September 2011, larval and juvenile fishes were collected weekly during night flood tides from the Moon River, an estuarine tidal creek south of Savannah, Georgia, USA. Passive horizontal tows were made from a fishing pier using two ichthyoplankton nets, each with a 1 m diameter hoop and 1 mm mesh. A bridled plankton net was configured with a tow rope attached to a traditional three-point bridle anchored to the hoop and a closed, 1 L collection jar at the cod end. A bridle-less net was configured with a tow rope and a float tied to the top of the hoop while a weight was tied to the bottom of the hoop. The cod end of the bridle-less net had an open collection bucket with 1 mm mesh. Nets were deployed simultaneously in the water column, just below the surface, for three consecutive 30-min tows. For each sampling date, pair-wise comparisons of nets were performed on mean values of fish abundance, species richness, species diversity, and species evenness. Mean abundance was the only consistent difference between bridled and bridle-less nets, with the bridle-less net having on average 4.870 times more fishes. Species richness (as measured by both number of species and Margalef's species richness index) tended to be greater in the bridle-less net, but not significantly greater. Species diversity (Shannon-Wiener diversity index) and species evenness (Pielou's evenness index) were also not significantly different between the two nets.
      PubDate: 2016-08-12T01:30:35.59844-05:0
      DOI: 10.1111/jai.13152
       
  • Hook performance and selectivity of Eurasian perch, Perca fluviatilis
           (Linnaeus, 1758) in the Åland Archipelago, Finland
    • Authors: S. B. Garner; K. A. Dahl, W. F. Patterson
      First page: 1065
      Abstract: The effects of two hook‐types (circle or J hook) fished with two different baits (red worms Eisenia spp., or cyprinid fishes) were examined for deep‐hooking, catch rate, mean total length, and selectivity of Eurasian perch, Perca fluviatilis, in the Åland Archipelago, Finland. The perch population available to hook‐and‐line gear was sampled with multipanel gillnets, with panels ranging from 10 to 60 mm in stretched mesh diameter. The effect of each hook then was examined for each bait by conditioning the size distributions of hook‐and‐line catches on the size distribution of perch collected with gillnets to estimate selectivity. The proportion of deeply‐hooked perch was 4.8 times greater for J hooks (0.21) than circle hooks (0.04) baited with worms and 3.7 times greater for J hooks (0.33) than circle hooks (0.09) baited with fish. Catch rates were significantly different between the two baits but not between the two hooks, with the greatest catch rate observed for the circle hook baited with worms. There was no significant difference in perch total length between the two hooks, but there was a significant difference between the two baits, with the fish bait catching significantly larger perch. Perch selection peaks between the two hooks differed by only 13.8 mm, but the selection peak with fish bait (236.4 mm TL) was 119.9 mm greater than the selection peak with the worm bait (116.5 mm TL). A substantially lesser incidence of deep hooking support the conservation benefits of circle hook use for perch, especially when catch‐and‐release is practiced. Using fish baits similar in size to those used in this experiment can avoid potentially harmful interactions between relatively small perch and anglers who place little importance on catch motives but whose satisfaction is still catch‐dependent.
      PubDate: 2016-09-02T08:15:27.319037-05:
      DOI: 10.1111/jai.13176
       
  • Measuring fish length and assessing behaviour in a high-biodiversity reach
           of the Upper Yangtze River using an acoustic camera and echo sounder
    • Authors: D.-Q. Lin; H. Zhang, M. Kang, Q.-W. Wei
      First page: 1072
      Abstract: In the past decade improved acoustic hard- and software have enabled estimations of abundance and distribution patterns of aquatic organism, including non-intrusive monitoring of fish migrations and behaviour. In this study, a high frequency acoustic camera (DIDSON-LR, 1.2 MHz, 0.7 MHz) and a portable split-beam scientific echo sounder (Simrad EY60, 200 kHz) collected acoustic data on 192 and 157 individuals within 24 hr (19–20 April 2011) in the Mituo reach of the Yangtze River, China. Mean fish length estimated from the acoustic camera data was 18.7 ± 5.6 cm, with an average swimming speed of 0.19 ± 0.13 m s−1. The mean fish target strength (TS) produced by the echo sounder was −43.8 ± 4.4 dB, which corresponded to 5.7–119.9 cm fish length when converted by three different TS-length equations. Average swimming speed was 0.11 ± 0.06 m s−1 from the echo sounder. Compared with the actual fish catch by the three layers of drift gill net in the survey area, the target length indicated by DIDSON was more accurate than the EY60 results, which were highly affected by the choice of TS length equations. It was determined that the two devices used synchronously could estimate fish length effectively to investigate their behaviour and distribution.
      PubDate: 2016-07-18T01:10:53.910879-05:
      DOI: 10.1111/jai.13134
       
  • Diet of characin, Brycon falcatus (Muller and Troschel, 1844) in the
           Amazon Basin: a case study on an attractant for fish in the Teles Pires
           River
    • Authors: L. S. Matos; J. O. S. Silva, P. S. M. Andrade, L. N. Carvalho
      First page: 1080
      Abstract: The use of fresh soybeans as an attractant in fishing has been altering the diet of the characiform Brycon falcatus, which are thriving at fishing spots. This has subsequently affected the amount of abdominal fat in the species from the Tapajós River basin, Southern Amazon. In the Teles Pires River basin region, one of the most common capture techniques employed by fishermen is the use of attractant feeds (soybeans, corn, cassava) at certain locations to attract mostly omnivorous fish. Tourists also feed fish chips and breadcrumbs. In the experimental design, rivers were mapped according to attractant availability to develop an attractant-density classification system comprising four rivers with different attractant densities (low, medium, and high), plus a river serving as control (no attractants). Monthly collections were carried out during the 2012 and 2013 dry seasons. For diet analyses, methods of frequency of occurrence and relative volume were used to calculate the feeding index (IAi) of 97 specimens. For analyses of abdominal fat, an index was calculated by dividing the wet weight of the abdominal fat by the total wet weight of each individual. Standard length ranged from 15.0 to 48.5 cm, and weight between 0.18 and 4.40 kg. Composition and diversity of diet items changed with the increasing density of attractants. In the river with a high attractant density, fresh soybeans and corn were dominant diet items; in the control river, the diet was natural (e.g. seeds, fruits, leaves, and insects) and therefore similar to those described for B. falcatus in undisturbed environments. Fish collected from rivers with high attractant densities were in better condition than those from the river with no attractants. Although use of attractants is prohibited by State legislation, there are no inspections. This study clearly shows an alteration in the natural diet and abdominal fat of B. falcatus resulting from an imbalanced, high-calorie feed via an attractant. It is recommended that these areas be monitored for the preservation of B. falcatus.
      PubDate: 2016-06-18T02:15:29.730064-05:
      DOI: 10.1111/jai.13108
       
  • Estimation of migratory history in female masu salmon Oncorhynchus masou
           (Brevoort, 1856) with the growth hormone pseudogene
    • Authors: T. Yamamoto; K. Suzuki, T. Endo, S. Kitanishi
      First page: 1086
      Abstract: To estimate the migration timing, length, and location of females with the growth hormone pseudogene (GHp), trace element analyses were performed on the otoliths of 40 wild adult masu salmon, Oncorhynchus masou (12 males, 19 normal females, and nine females with GHp [all fish were 3- or 4-years-old]) caught during the reproductive season (September) from 2004 to 2010 in the Atsuta River in Japan. Sr concentrations at the end of the otolith translucent area formed during the winter suddenly increased in all individuals, suggesting that they had migrated in the spring. In addition, the estimated migration length and location of females with GHp indicated that they had spent a fixed period of 1 year in the ocean, suggesting that females with GHp have a similar migratory history as that of normal females.
      PubDate: 2016-09-01T04:15:23.596152-05:
      DOI: 10.1111/jai.13165
       
  • Seasonal changes in diel activity of juvenile European catfish Silurus
           glanis (Linnaeus, 1758) in Byšická Lake, Central Bohemia
    • Authors: T. Daněk; P. Horký, L. Kalous, K. Filinger, V. Břicháček, O. Slavík
      First page: 1093
      Abstract: Dualism in activity has been described in many fish species, including larger individuals of European catfish (Silurus glanis), which are able to switch their activities from nocturnal to diurnal in winter and spring. During the multi-year telemetry study, seasonal changes in diel activity of 45 juvenile European catfish were investigated. These juveniles exhibited no dualism in movement and were strictly nocturnal and crepuscular with no period of diurnal activity. During winter, the same juvenile European catfish were completely inactive throughout the 24-hr cycle. Also investigated was the impact of temperature, dissolved oxygen levels and water clarity on fish movement, relocation of resting places and home range size. The only significant correlations were that relocation and home range size increased with rising water temperatures.
      PubDate: 2016-07-26T02:21:27.186725-05:
      DOI: 10.1111/jai.13146
       
  • Management of pikeperch Sander lucioperca (Linnaeus, 1758) sperm quality
           after stripping
    • Authors: F. J. Schaefer; J. L. Overton, J. Bossuyt, D. Żarski, W. Kloas, S. Wuertz
      First page: 1099
      Abstract: The aim of this study was to identify the potential for optimizing management of sperm quality during commercial reproduction of pikeperch Sander lucioperca. Sperm from different males is often pooled prior to fertilization or stored for short periods (hr) until ovulated eggs become available. A novel approach was applied to assess pooling effects by cross-wise transfusion of sperm and seminal fluid (SF) of males with differing initial sperm quality. In addition, the effects of two different buffers (glucose and KCl) were tested, as well as a supplementation of melatonin and progesterone (1 mmol L−1) to maintain or improve the quality of freshly stripped and incubated (0.5, 1, 2, 4 and 24 hr) sperm. Sperm motility and curvilinear velocity (VCL) were measured by computer assisted sperm analysis (CASA). The VCL proved to be a more sensitive, reliable parameter compared to motility, since significant differences occurred up to 3.5 hr earlier. Transfusion of SF between low and high quality sperm resulted in a significant decrease in sperm with high initial VCL (seven out of 22 transfusions), whereas VCL of low quality sperm could not be improved. In only one case did a transfusion result in an increased VCL. No treatment prevented a significant quality loss over 24 hr or even enhanced sperm performance. Conclusively, pooling sperm of different qualities as well as short-term storage has a significant, negative impact on overall sperm quality. Pooling should only be considered when the sperm quality is known.
      PubDate: 2016-08-11T01:11:43.652183-05:
      DOI: 10.1111/jai.13144
       
  • The invasive fish Acestrorhynchus pantaneiro Menezes, 1992 in Southern
           Brazil: Occurrence and food niche overlap with two native species
    • Authors: E. B. Neuhaus; D. A. Antonetti, U. H. Schulz
      First page: 1107
      Abstract: Acestrorhynchus pantaneiro is an invasive species in the Patos Lagoon system in South Brazil. The aim of the study was to document the expansion of the occurrence range of A. pantaneiro in southern Brazil and to analyze the diet and food feeding overlap with the two native species Oligosarcus robustus and O. jenynsii. Occurrence data were based on fish collections databases and collected material. Fish for the stomach analysis were captured in the Jacuí and Sinos rivers from 2007 to 2009 by gillnetting and electrofishing. Food uptake was quantified by frequency of occurrence and relative abundance of the prey items. Food niche overlap was estimated by the Pianka Index. Database records indicated a rapid expansion of the occurrence range in all principal basins of the southernmost state of Rio Grande do Sul in Brazil. Food niche overlap was greatest between A. pantaneiro and O. robustus (Ojk = .970). Both species fed predominantly on small Characids. O. jenynsii ingested predominantly insects and crustaceans and, consequently, had low food niche overlap when compared with the two other species. Results indicate that the expansion of A. pantaneiro occurrence range may principally affect O. robustus populations.
      PubDate: 2016-07-26T02:21:16.630622-05:
      DOI: 10.1111/jai.13147
       
  • Neutrophil activity affects Oreochromis mossambicus (Peters, 1852)
           antibody production against heat-killed Aeromonas hydrophila vaccine
    • Authors: P. A. Subramani; A. A. Daniels Gnanamuthu, R. D. Michael
      First page: 1113
      Abstract: Aeromonas hydrophila is one of the important and most common pathogens of warm water fish. Prophylactic and therapeutic measures against A. hydrophila infection are essential to prevent loss of fish production in aquaculture. A heat-killed vaccine was developed against three strains of A. hydrophila, namely O21, O26 and O28, and analysed for their comparative immunogenicity in Oreochromis mossambicus (Peters, 1852). Studied were the neutrophil activity and specific antibody response of the host against the vaccines, which showed that neutrophil activity was highest for the heat-killed O21, but that the heat-killed O28 produced the highest antibody titres. The antibody cross-reactivity tests indicated that the antibody raised against O28 was pan-reactive whereas it was less cross-reactive in O21. Thus strain O28 may be used as a vaccine candidate for a pan-protection of fish from various strains of A. hydrophila infections. However, further rigorous studies with different fish species and bacterial strains are needed to confirm these results.
      PubDate: 2016-06-30T06:20:23.425036-05:
      DOI: 10.1111/jai.13123
       
  • Effect of dietary L-malic acid supplementation on growth, feed utilization
           and digestive function of juvenile GIFT tilapia Oreochromis niloticus
           (Linnaeus, 1758)
    • Authors: Y.-J. Chen; L. Luo, G.-Z. Zhang, Z. Li, F.-J. Bai, Y.-Q. Shi, H.-S. Yang
      First page: 1118
      Abstract: Two feeding trials (FTs) were conducted in 2013 and 2014, respectively, to determine the optimal L-malic acid (LMA) level for juvenile GIFT (Genetically Improved Farmed Tilapia) Oreochromis niloticus. Except for the LMA level, the FT1 and FT2 had a similar diet formulation. In FT1, LMA was included at 0 (basal diet), 1, 4, 8, 16 and 32 g kg−1, respectively. After 20 weeks, daily weight gain and feed conversion ratio were improved but not differentiated with 1–8 g kg−1 LMA. Further increasing the LMA supply initially decreased the feed intake (16 g kg−1), and then decreased both feed intake and feed utilization (32 g kg−1), thus impairing the fish growth. FT2 was subsequently conducted with a smaller LMA range (0, 0.5, 1, 2, 4 and 8 g kg−1, respectively) but was unfortunately terminated at the end of 8 weeks because 20% of the fish were badly injured during weighing. Unexpectedly, growth and feed utilization were still improved but not differentiated with 0.5–8 g kg−1 LMA. In FT2, beneficial effects of LMA inclusion on the digestive function (pepsin, foregut amylase and foregut lipase), the activities of serum lysozyme and hepatic superoxide dismutase, and liver lipid peroxidation (malondialdehyde concentration) were found. Taking the results of FT1 and FT2 together, it could be concluded that dietary LMA supplementation at low concentrations (0.5–8 g kg−1) could improve growth and feed utilization, but excess LMA (≥16 g kg−1) might compromise feed intake and/or feed utilization, thus impairing fish growth. To reduce feed costs in commercial practice, 0.5 g kg−1 LMA is recommended in the feed of juvenile GIFT tilapia based on the results of this study.
      PubDate: 2016-06-25T02:35:24.525419-05:
      DOI: 10.1111/jai.13119
       
  • Changes in tissue composition in Brazilian mojarra Eugerres brasilianus
           (Cuvier, 1830) females at different stages of gonadal development as a
           starting point for development of broodstock diets
    • Authors: L. B. G. Santos; C. F. F. Craveiro, F. R. M. Ramos, C. N. C. Bomfim, R. C. Martino, R. O. Cavalli
      First page: 1124
      Abstract: Thie study evaluated the changes in proximate composition and fatty acid profile in the muscle, liver and ovarian tissues of wild-caught Brazilian mojarra Eugerres brasilianus females during sexual maturation as a starting point for the development of broodstock diets. A total of 114 females captured in the Santa Cruz Canal, Itapissuma, PE, north-eastern Brazil, from August 2012 to April 2013, were classified into four stages of gonadal development by histological analyses. Ovarian protein and total lipid levels increased with maturation, and a simultaneous decrease in liver protein and lipid levels was observed. The levels of arachidonic acid (ARA, 20:4n-6), eicosapentaenoic acid (EPA, 20:5n-3), docosapentaenoic acid (DPA, 22:5n-3) and docosahexaenoic acid (DHA, 22:6n-3) also increased in the ovary as the gonadal development proceeded; they represented 96.4% of the total highly unsaturated fatty acids (HUFA) in the ovaries of fully mature females. These findings highlight the need to include protein and lipid-rich sources containing n-6 HUFA, particularly ARA, and n-3 HUFA (EPA, DPA and DHA) in the diets of Brazilian mojarra breeders.
      PubDate: 2016-06-08T02:41:32.434618-05:
      DOI: 10.1111/jai.13103
       
  • Histopathological analyses of native silver catfish Rhamdia quelen (Quoy
           and Gaimard, 1824) immunized against and challenged with live theronts of
           Ichthyophthirius multifiliis
    • Authors: K. R. Tancredo; E. L. T. Gonçalves, M. L. Martins
      First page: 1130
      Abstract: As an alternative to treating with chemicals, immunization using Ichthyophthirius multifiliis as a vaccine has been studied in fishes that were often affected with white spot diseases also to understand the possible changes to the tissue caused by the vaccine. The focus of this study was the analysis of the influence of immunization via intraperitoneal injection (i.p.) and via immersion bath (im.b.) on the histopathology of R. quelen after being challenged with live theronts of I. multifiliis distributed in: control (non-immunized and non-challenged); non-immunized and challenged with 12,000 theronts/fish; non-immunized and challenged with 22,000 theronts/fish; immunized and challenged with 12,000 theronts/fish; immunized and challenged with 22,000 theronts/fish. Water quality was measured in each assay, with 300 fingerlings distributed among 15 tanks with 20 fish in each of three replicates. Six days after challenge, samples for histopathological and parasitological analyses were collected. In both i.p. and im.b. fish the prevalence of I. multifillis in the gills was higher in the non-immunized fish (33.33% and 27.77%, respectively). Melanomacrophages were present in 53% of the samples of i.p. non-immunized fish. Fish im.b. immunized and challenged showed more atrophied areas in the hepatocytes. Higher numbers of melanomacrophages in the i.p. non-immunized fish kidneys were observed compared to control. The results showed no difference in the gill lesions of either immunized or non-immunized fish compared to control. Histological alterations in the organs of silver catfish were considered light, except in the liver that presented significant atrophy and hypertrophy of hepatocytes after immunization via i.p.
      PubDate: 2016-08-27T02:35:36.298327-05:
      DOI: 10.1111/jai.13161
       
  • Intestinal histomorphology, autochthonous microbiota and growth
           performance of the oscar (Astronotus ocellatus Agassiz, 1831) following
           dietary administration of xylooligosaccharide
    • Authors: S. H. Hoseinifar; M. Khalili, Y.-Z. Sun
      First page: 1137
      Abstract: The present study investigates the changes in intestinal histomorphology, autochthonous microbiota and growth performance of the oscar, Astronotus ocellatus, following dietary administration of different levels of xylooligosaccharide (XOS). One hundred forty-four oscars (8.88 ± 0.23 g; n = 144) were randomly stocked in 12 aquaria (100-L) assigned to four treatments repeated in triplicate. Fish were fed a commercial diet, Biomar, supplemented with different levels (0 [control], 0.5, 1, 2%) of XOS for 8 weeks. Treatments were investigated under static aerated water conditions with a 70% daily water exchange. Evaluation of intestinal histomorphology (villus height, enterocytes height and thickness of the tunica muscularis) revealed no significant differences between XOS-fed groups and the control treatment (P > 0.05). However, administration of XOS in the oscar diet increased the total autochthonous intestinal heterotrophic bacteria significantly (P 
      PubDate: 2016-06-25T02:35:30.343123-05:
      DOI: 10.1111/jai.13118
       
  • Evaluation of chemical treatments to mitigate or eradicate Gnathia
           maxillaris infestations
    • Authors: C. Hispano; J. Méndez, P. Bultó, A. R. Blanch
      First page: 1142
      Abstract: The eradication of the haematophagous isopod ectoparasite Gnathia maxillaris was not achieved after several years of physical elimination of larvae by filtration and chemical treatment with trichlorfon in a captive marine fish population in exhibition aquaria. In this study, different in vitro laboratory assays were performed to find effective alternative anti-parasitic treatments to trichlorfon (lufenuron, emamectin benzoate, cypermethrin and abamectin). The lethal concentration 50 (LC50) values at 96 hr were calculated for each compound using both larval stages (zuphea and praniza); morphological deformities generated throughout the life cycle, reduction in egg laying and survival of adult forms were also determined. Abamectin, cypermethrin and emamectin benzoate proved effective at limiting further Gnathia maxillaris development, but their efficacy at eradicating an infestation in large tanks was not supported by laboratory assays. However, the use of lufenuron proved to be a good substitute for trichlorfon when treating this type of infestation in large-volume tanks (LC50 55.8 mg m−3 for praniza). Routine lufenuron treatment once a month via an oral dose at 10 mg kg−1 body weight eradicated G. maxillaris from the exhibition aquaria.
      PubDate: 2016-07-13T00:55:24.016465-05:
      DOI: 10.1111/jai.13145
       
  • Dietary folic acid (FA) requirement of a genetically improved Nile tilapia
           Oreochromis niloticus (Linnaeus, 1758)
    • Authors: J.-P. Wu; F. Wu, M. Jiang, H. Wen, Q.-W. Wei, W. Liu, J. Tian, F. Huang, C.-G. Yang
      First page: 1155
      Abstract: The present study was conducted to determine the dietary folic acid (FA) requirement of genetically improved Nile tilapia, Oreochromis niloticus. Experimental diets were supplemented with 0.04, 0.22, 0.48, 0.96, 2.25, or 4.07 mg/kg FA, respectively, and fed to three replicate groups of 15 tilapia (mean initial weight = 60.23 ± 2.60 g; mean ± SD) for 12 weeks. Results showed that the weight gain rate increased linearly with increasing dietary FA from 0.04 to 0.40 mg/kg, then remained stable with higher supplementation. Similarly, hepatic FA concentration, red blood cell count (RBC), hemoglobin concentration (HB) and hematocrit (HCT) all markedly increased in fish fed with 4.07 mg/kg FA compared to those fed a control diet (p 
      PubDate: 2016-10-11T04:31:20.907775-05:
      DOI: 10.1111/jai.13151
       
  • Subcutaneous injection of visible implant elastomer in sterlet (Acipenser
           ruthenus Linnaeus, 1758): a study on compatibility and retention
    • Authors: A. Nastoll; B. Feneis, T. Ring, M. Schubert, H. Wedekind, J. Geist
      First page: 1161
      Abstract: The purpose of this study was to mark endangered sterlet (Acipenser ruthenus) with visible implant elastomer (VIE) in order to assess mortality, compatibility, retention, persistence and histological reactions resulting from this tagging technique. It was hypothesized there would be only minor effects on the fishes' health, and assumed that acute effects would be more pronounced than long‐term effects. On 11 September 2013, 20 specimens were tagged ventrally with visible implant elastomer, 20 received a subcutaneous injection with 0.9% NaCl solution, and another 20 served as untreated control. Mean total length was 28.0 ± 1.8 cm and mean body mass 64.1 ± 12.0 g. The sterlets were kept in four 4,000‐L tanks filled with 2,400‐L water. Acute effects were monitored for 95 days, where fish were held at temperatures between 2.4°C and 15.2°C, reflecting outdoor conditions. Chronic effects were examined 282 days post‐tagging through histological sections of the tagging region in five sterlets. During the first 95 days of observation, tag retention was 100%. No signs of incompatibility were detected. Body mass did not significantly differ between VIE‐tagged fish and controls. At day 282 post‐tagging, however, distinct tissue reactions were visible at the tagging sites of nine fish. Histological examination of five fish revealed a variable degree of infiltration with leukocytes in the areas around the elastomer, which did not necessarily correspond with the externally visible degree of inflammation. After medical treatment, the lesions healed without complications, whereas the retention rate of the VIE tags was 5%. According to the findings, the tag location rather than the tag itself was responsible for the externally visible irritations, indicating that the ventral subcutis of sterlet is not a suitable site, even for small VIE tags in long‐term studies. The results of this study also suggest that VIE marking should in general be critically evaluated before application in field studies.
      PubDate: 2016-09-23T23:20:36.862508-05:
      DOI: 10.1111/jai.13191
       
  • Dietary methionine requirement of pre-adult blunt snout bream,
           (Megalobrama amblycephala Yih, 1955)
    • Authors: H.-L. Liang; M.-C. Ren, H.-M. Habte-Tsion, H.-F. Mi, X.-P. Ge, J. Xie, B.-W. Xi, Q.-L. Zhou, L.-H. Miao
      First page: 1171
      Abstract: A nine-week feeding trial was conducted to test the hypothesis that an adequate methionine diet might improve growth, feed utilization, body composition and physiology, and biochemical parameters in pre-adult blunt snout bream Megalobrama amblycephala, whereas a methionine deficiency might have adverse effects on these parameters. Six isonitrogenous and isoenergetics semi-purified diets (33.0% crude protein, 7.0% crude lipid) were formulated to contain graded methionine levels (0.39–1.54% of dry weight) at 0.25% increments replaced by equal proportions of glycine. Results show that the survival rate (SR) was not significantly affected by the dietary methionine level. Final weight (FW), feed efficiency ratios (FER), weight gain (WG), and specific growth rate (SGR) increased with increasing dietary methionine levels up to 1.00% and then showed a declining trend. Using quadratic regression analysis of FER and SGR, the dietary methionine requirement was estimated to be 0.74% (2.24% of dietary protein) and 0.76% of the diet (2.30% of dietary protein), respectively. Fish fed the 0.39% methionine diet showed significantly lower whole body protein content compared to those fed with 0.85, 1.00 and 1.24% methionine diets (P  0.05). Most important, the optimal dietary methionine level of pre-adult blunt snout bream should be 0.74–0.76% of the diet (2.24–2.30% of dietary protein).
      PubDate: 2016-06-27T07:00:52.171396-05:
      DOI: 10.1111/jai.13117
       
  • Age and growth of damselfish Chromis notata (Temminck & Schlegel,
           1843), Jeju Island, Korea
    • Authors: H. J. Kim; J. H. Na, C.-W. Oh
      First page: 1179
      Abstract: This study investigated the age and growth of damselfish, Chromis notate, from Jeju Island in Korea. Samples were collected monthly by lift net from September 2013 to August 2014. Total lengths of the damselfish ranged from 6.4 to 15.3 cm. The relationship between total length and wet weight was WW = 0.0125TL3.1631 for females, and WW = 0.0091TL3.2769 for males. The slopes in the relationship between length and weight were not significantly different between sexes, but were significantly different in the intercepts. There were more female than male specimens (1.3:1). Age determination was conducted using the otoliths. Marginal increment (MI) declined in summer and winter, which suggests that two rings are formed each year. Ages of sampled individuals ranged from 1 to 5 years. Length-at-age data were fitted using the von Bertalanffy growth model. The estimated growth functions were Lt = 19.93 [1 − exp−0.21 (t + 0.811)] total length and wet weight was females, and Lt = 16.47 [1 − exp−0.32 (t + 0.499)] for males.
      PubDate: 2016-07-19T05:11:01.13757-05:0
      DOI: 10.1111/jai.13137
       
  • Growth response of cultured larvae of silver therapon Leiopotherapon
           plumbeus (Kner, 1864) in outdoor tanks in relation to fertilizer type and
           fish density
    • Authors: F. A. Aya; L. M. B. Garcia
      First page: 1186
      Abstract: This study evaluated the effects of fertilizer type and fish density on early growth and survival of silver therapon Leiopotherapon plumbeus (Kner, 1864) larvae reared in outdoor tanks. In the first experiment, larvae (1.92 ± 0.09 mm total length) were stocked into nine, 4 m3 tanks at an initial density of 0.5 larvae L−1 and reared for 42 days at an ambient temperature of 28.8–30.7°C. Three treatments with three replicates each were compared: organic (chicken manure, OF) or inorganic fertilizers (ammonium phosphate, IF) applied once every 2 weeks, and the unfertilized (NF) tanks serving as the control group. Water quality, zooplankton densities, survival or growth of L. plumbeus larvae did not vary significantly in either fertilized or unfertilized tanks. Fertilization resulted in elevated nutrient concentrations, which did affect survival (2.10%–6.07%) of the fish larvae. In the second experiment, larvae were stocked at densities of 0.4 or 0.6 larvae L−1 in tanks fertilized at 4–5 days interval with OF and IF for 30 days. Growth performance of L. plumbeus larvae was affected by fish density, with significantly larger (20.04 ± 2.65 mm in total length) and higher specific growth rate (SGR; 6.97 ± 0.48% day−1) at 0.4 larvae L−1 than at 0.6 L−1. Fry production did not vary significantly between fish density treatment groups given the same fertilizer types, but survival rates were improved at 0.4 L−1. Together, production of L. plumbeus larvae in outdoor tanks can be optimized at a lower stocking density, regardless of the type of fertilizer used.
      PubDate: 2016-07-16T00:05:56.233489-05:
      DOI: 10.1111/jai.13138
       
  • Mortality of non-target flatfishes escaping from demersal trawl codends
    • Authors: F. O. Düzbastılar; C. Aydın, B. Gül
      First page: 1194
      Abstract: Mortality of non-target flatfishes that had escaped from various sizes (40, 44 and 50 mm) of codend meshes was determined by capturing and holding the escapees in cages for 7 days. Although three flatfish species were studied, sufficient data for detailed analyses were obtained only for Buglossidium luteum (Risso, 1810) (solenette). Trawl hauls (48 in total) with 15 min towing durations were conducted in the summer and winter seasons of 2011 and 2012. A tailored bottom trawl with 800 meshes around the mouth was used with covers to capture fish. Covers were used as an observation cage, and were fixed to the sea bottom at depths of 3.0–8.2 m. The monitoring period was 7 days. It was estimated that average escape mortality of B. luteum for all test cages (96.5%) in summer was significantly higher (p  .01), with the exception of the 2011 winter; however, the mortality rate was inversely related to fish length in most cases (p 
      PubDate: 2016-10-11T04:31:40.161834-05:
      DOI: 10.1111/jai.13220
       
  • Effects of ammonia on growth, digestion and antioxidant capacity in
           juvenile yellow catfish Pelteobagrus fulvidraco (Richardson, 1846)
    • Authors: L. Zhang; Z.-G. Zhao, Q.-X. Fan
      First page: 1205
      Abstract: Effects of ammonia stress on food ingestion, growth, digestion and antioxidant capacity were investigated in juvenile yellow catfish Pelteobagrus fulvidraco (Richardson) with initial body weights of 20.24 ± 0.18 g. The fish were reared in triplicate in 15 experimental tanks at a rate of 30 fish per tank for 56 days. Water was maintained at a dissolved oxygen (DO) level of over 6.2 mg L−1, pH 7.2–7.6, and temperature of 29.0 ± 1.5°C under a natural 12L: 12D photoperiod. Survival, food ingestion (FI), specific growth rate (SGR), food conversion efficiency (FCE), apparent digestibility coefficient (ADC), total antioxidant capacity (T-AOC), levels of glutathione (GSH) and malonaldehyde (MDA), and activities of superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GSH-PX) of the juveniles were determined in total ammonia nitrogen (NH3-N+NH4-N) levels of 0 (control group), 3.36, 6.72, 13.44 and 26.88 mg L−1. The results show that the survival, FI, SGR, FCE, and ADC decreased significantly with an increase in total ammonia nitrogen (p 
      PubDate: 2016-10-11T07:05:35.27978-05:0
      DOI: 10.1111/jai.13203
       
  • The effects of norfloxacin and gallic acid on the oxidation of red blood
           cells in Silurus meridionalis Chen, 1977
    • Authors: H. Y. Guo; D. Y. Pu, Y. G. Zhang
      First page: 1213
      PubDate: 2016-07-26T02:15:30.283704-05:
      DOI: 10.1111/jai.13124
       
  • Spinal deformities in free-ranging bull sharks, Carcharhinus leucas
           (Müller and Henle, 1839), from the western South Atlantic Ocean
    • Authors: A. S. Afonso; Y. V. Niella, E. Cavalcanti, M. B. Andrade, J. S. Afonso, P. S. Pinto, F. H. V. Hazin
      First page: 1217
      PubDate: 2016-07-04T06:13:10.615647-05:
      DOI: 10.1111/jai.13125
       
  • Scleral fibrosarcoma and conjunctival squamous papilloma in Indian oil
           sardine, Sardinella longiceps (Valenciennes, 1847)
    • Authors: V. Singaravel; A. Gopalakrishnan, R. Vijayakumar, K. Raja, S. Asrafuzzaman
      First page: 1221
      PubDate: 2016-08-19T04:25:38.186466-05:
      DOI: 10.1111/jai.13168
       
  • First record of the Indo-Pacific soldier bream Argyrops filamentosus
           (Valenciennes, 1830) from the Mediterranean Sea
    • Authors: M. Gürlek; D. Ergüden, S. Doğdu, C. Turan
      First page: 1224
      PubDate: 2016-08-30T03:45:24.534554-05:
      DOI: 10.1111/jai.13169
       
  • First record of the yellowbar angelfish Pomacanthus maculosus (Forsskål,
           1775) in the central Mediterranean (Maltese Islands)
    • Authors: J. Evans; E. Zammit, P. J. Schembri
      First page: 1226
      PubDate: 2016-09-12T02:22:27.182715-05:
      DOI: 10.1111/jai.13188
       
  • Occurrence of the blackfin goosefish, Lophius gastrophysus (Miranda
           Ribeiro, 1915), in coastal waters of the San Jorge Gulf, Patagonia,
           Argentina
    • Authors: P. D. Cochia; N. D. Bovcon, J. Ruibal-Núñez, L. Villagran, L. Jerez
      First page: 1229
      PubDate: 2016-09-26T02:06:06.165304-05:
      DOI: 10.1111/jai.13221
       
  • Confirmed occurrence in the Mediterranean Sea of Mobula japanica (Müller
           & Henle, 1841) with a first record off the Turkish coasts
    • Authors: A. Sakalli; N. Yucel, C. Capapé
      First page: 1232
      PubDate: 2016-09-23T23:20:24.738487-05:
      DOI: 10.1111/jai.13218
       
  • First record of smoltified rainbow trout Oncorhynchus mykiss (Walbaum,
           1792) in the main riverbed of the Serbian part of the Danube River
    • Authors: M. Nikčević; S. Skorić, G. Cvijanović, B. Mićković, A. Hegediš
      First page: 1235
      PubDate: 2016-10-04T07:32:11.645549-05:
      DOI: 10.1111/jai.13230
       
  • On the occurrence of mirror carp, an aquaculture breed of Cyprinus carpio
           Linnaeus, 1758, in the Songhua River, the largest tributary of the Amur
           River
    • Authors: F. Tang; A. Santos, M. Bessert, C. Lu, W. Liu
      First page: 1237
      PubDate: 2016-09-23T05:40:18.81842-05:0
      DOI: 10.1111/jai.13185
       
  • Effects of dietary protein/lipid ratio on growth performance, feed
           utilization and blood parameters of great sturgeon (Huso huso Linnaeus,
           1758) during the winter season
    • Authors: B. Falahatkar; P. Haghparast, B. Meknatkhah, M. Rahmati
      First page: 1243
      PubDate: 2016-10-04T07:32:00.616442-05:
      DOI: 10.1111/jai.13193
       
  • Development and characterization of ten polymorphic SNP markers in
           growth‐related genes for the channel catfish, Ictalurus punctatus
           (Rafinesque, 1818)
    • Authors: S. Y. Zhang; X. H. Chen, M. H. Wang, L. Q. Zhong, Q. Qin, W. J. Bian
      First page: 1248
      PubDate: 2016-09-23T23:20:21.048593-05:
      DOI: 10.1111/jai.13194
       
  • Inter‐population plasticity in dietary traits of invasive bleak Alburnus
           alburnus (Linnaeus, 1758) in Iberian fresh waters
    • Authors: D. Latorre; G. Masó, A. Hinckley, F. Rubio‐Gracia, A. Vila‐Gispert, D. Almeida
      First page: 1252
      PubDate: 2016-09-12T02:23:00.792705-05:
      DOI: 10.1111/jai.13186
       
  • Length–weight relationships of freshwater fishes of the Alto Madre de
           Dios River (Manu Biosphere Reserve, Peru)
    • Authors: I. Tobes; R. Miranda, A. Pino-del-Carpio, J. M. Araujo-Flores, H. Ortega
      First page: 1256
      Abstract: The present work provides the estimates of morphometric relationships for 22 native freshwater fish species (11 Characidae, five Loricariidae, two Heptapteridae, one Astroblepidae, one Crenuchidae, one Curimatidae and one Erythrinidae) collected in the Alto Madre de Dios River (Cuzco and Madre de Dios, Peru) in June 2012 using a mobile backpack electrofishing unit. These are the first length–weight relationships reported for 24 species, mostly endemic to the Amazonian basin. Knowledge regarding these biometric relationships can be relevant in the management and conservation of the local fishes and fisheries.
      PubDate: 2016-09-01T04:15:25.880952-05:
      DOI: 10.1111/jai.13172
       
  • Length–weight relationships of two fish species from Yalong River,
           southwestern China
    • Authors: Y. J. Duan; D. Q. Tan
      First page: 1259
      Abstract: Length–weight relationships (LWRs) were evaluated for Jinshaia sinensis (Sauvage & Dabry de Thiersant, 1874) and Lepturichthys fimbriata (Günther, 1888) using a total of 289 specimens caught by gill nets (mesh size 5.0 cm) and angling in the Yalong River, southwestern China during February and March 2007. This study presents the first reference on LWR for these species from the Yalong River.
      PubDate: 2016-08-08T10:03:48.083353-05:
      DOI: 10.1111/jai.13154
       
  • Length–length and length–weight relationships for eight drum species
           in southeastern Louisiana
    • Authors: M. T. O'Connell; A. M. U. O'Connell
      First page: 1261
      Abstract: Length–length and length–weight relationships can vary temporally and spatially, so it is imperative that accurate estimates of these relationships are available. Total length–standard length (TL-SL) and standard length–total weight (SL–TW) relationships were calculated for eight species of drum (Sciaenidae) occurring in estuaries of southeastern Louisiana. Data were derived from monthly trawl, beach seine, and gillnet collections taken in and around Lake Pontchartrain between 2000 and 2012. Overall TL–SL relationships (ignoring the month) were found for seven species and overall SL–TW relationships were found for eight species. The strong r2 values (all > 0.950, except for one instance) indicate that these relationships are robust and will be appropriate for use by scientists managing these species.
      PubDate: 2016-05-30T04:40:24.564677-05:
      DOI: 10.1111/jai.13105
       
  • Length–weight relationships for nine fish species in Lake
           Dianshan, China
    • Authors: W.-W. Li; S.-Q. Tian, F. Wu, X.-J. Dai, C.-X. Gao
      First page: 1264
      Abstract: Presented are the relationships between fork length (FL) and weight (W) for nine fish species sampled from 2010 to 2012 in Lake Dianshan, Shanghai, China. Values of the parameters a ranged from 0.005 to 0.017 and b values ranged from 2.590 to 3.511; all r2 for the relationships were higher than 0.950. A new maximum length for Plagiognathops microlepis is also reported.
      PubDate: 2016-06-27T07:00:53.002241-05:
      DOI: 10.1111/jai.13106
       
  • Length–weight relationships of five commercial fish species from the
           Strait of Hormuz in the Persian Gulf
    • Authors: M. S. Alavi-Yeganeh; M. Shojaei, S. A. Taghavi Motlagh, M. Hakimelahi, A. Taheri Mirghaed
      First page: 1266
      Abstract: Length-weight relationships are described for five fish species from the coast of the Hormuz Strait in the Persian Gulf, Iran. Specimens were collected between August 2010 and July 2011 using shrimp beam trawls, gill nets and intertidal fishing weirs. Relationships for three of the species had no previous data in the international science global databank on fishes: www.FishBase.org. A new maximum length was recorded for Acanthopagrus latus.
      PubDate: 2016-06-08T02:41:33.035996-05:
      DOI: 10.1111/jai.13109
       
  • Length–weight relationships of 55 fish species from the Three Gorges
           Reservoir in the Yangtze River, China
    • Authors: S. B. Chen; C. S. Liao, Z. J. Li, T. L. Zhang, S. W. Ye, J. S. Liu
      First page: 1268
      Abstract: The paper reports the length–weight relationships of 55 species from the Three Gorges Reservoir (TGR) of the Yangtze River, China, and the largest reservoir in the world. A total of 24,176 specimens were collected from July 2012 to January 2015. Length–weight relationships for 33 fish species not recorded previously in FishBase, and the maximum total lengths computed for eight species are presented. The a values varied between 0.00054 and 0.01923, and the b values ranged from 2.729 to 3.583. The results will be useful for the application of sustainable management and conservation of these fishes in the TGR of the Yangtze River.
      PubDate: 2016-07-26T02:15:27.0976-05:00
      DOI: 10.1111/jai.13139
       
  • Length–weight relationships of three fish species from Trasimeno
           Lake, Italy
    • Authors: D. Giannetto; L. Pompei, A. Carosi, R. Dolciami, L. Ghetti, M. Lorenzoni
      First page: 1273
      Abstract: Length–weight relationships for Alburnus arborella, Esox cisalpinus and Scardinius hesperidicus from Trasimeno Lake are provided. A total of 4,205 specimens were collected for examination from 2008 to 2014 throughout the lake by means of electrofishing and nets. For all species the value of b ranged from 2.887 for Esox cisalpinus males to 3.115 for Scardinius hesperidicus. The study provides the first reference of length–weight relationships for the three species. A new maximum total length is also reported for E. cisalpinus.
      PubDate: 2016-07-16T00:05:53.473146-05:
      DOI: 10.1111/jai.13140
       
  • Length–weight relationships of 15 fish species in wetland areas of
           coastal southern Brazil
    • Authors: C. Marques Assumpção; F. Corrêa, F. M. Quintela, D. Loebmann
      First page: 1276
      Abstract: Herein are the length–weight relationships of 15 fish species from wetland areas of the coastal region in southern Brazil. In 2010, fishes were sampled seasonally in four wetlands utilizing beach seine nets.
      PubDate: 2016-08-27T02:35:21.857197-05:
      DOI: 10.1111/jai.13167
       
  • Length–weight and length–length relationships of three Ambassid fishes
           from the Ganges River (NW Bangladesh)
    • Authors: M. Y. Hossain; M. A. Hossen, M. N. U. Pramanik, Z. F. Ahmed, M. A. Hossain, M. M. Islam
      First page: 1279
      Abstract: Length–weight relationships (LWRs) and length–length relationships (LLRs) are presented for the first time for three Ambassid fish species from the Ganges River, northwestern (NW) Bangladesh. Fish were sampled with traditional fishing gear including cast net (mesh size ranges from 1.0 to 2.0 cm), gill net (mesh size ranges from 1.5 to 2.5 cm), square lift net (mesh size ~ 1.0 cm) and conical and box trap, October 2014 to September 2015. Allometric coefficient (b) values were 3.00 for Chanda nama, 3.10 for Parambassis lala and 3.23 for Parambassis ranga, respectively. Additionally, the LLRs were highly significant with r2 ≥ .958. The present observations would be an effective tool for their stock assessment in the Ganges River, NW Bangladesh and surrounding ecosystems.
      PubDate: 2016-08-27T02:35:24.066694-05:
      DOI: 10.1111/jai.13170
       
  • Length–weight relationship of Rhinobatos horkelii Müller & Henle, 1841
           and Zapteryx brevirostris (Müller & Henle, 1841) off Brazil, southwestern
           Atlantic Ocean
    • Authors: A. F. Pasquino; M. F. Martins, O. B. F. Gadig
      First page: 1282
      Abstract: This study reports the length–weight relationships (LWRs) for two elasmobranch species, Rhinobatos horkelii Müller & Henle, 1841 and Zapteryx brevirostris (Müller & Henle, 1841) collected from the southwestern Atlantic, off Brazil. Both are considered endangered species. The LWR data can be taken into consideration for further management and conservation plans.
      PubDate: 2016-09-09T23:20:42.846375-05:
      DOI: 10.1111/jai.13171
       
  • Length–weight relationships of three estuarine species in the Comacchio
           Lagoon, Po River delta, Italy
    • Authors: M. Lanzoni; A. Gavioli, V. Aschonitis, M. Merighi, E. A. Fano, G. Castaldelli
      First page: 1284
      Abstract: The length–weight relationships (LWRs) for three native fish species of the Comacchio Lagoon (northwestern Adriatic Sea, Italy) were determined. The species Zosterisessor ophiocephalus (Pallas, 1814), Pomatoschistus canestrini (Ninni, 1883) and Knipowitschia panizzae (Verga, 1841), were sampled monthly from 2010 to 2014. Both P. canestrini and K. panizzae are listed as protected species in the Habitat Directive and the Berne Convention and there is no information on their LWRs in FishBase.
      PubDate: 2016-09-09T23:20:43.847818-05:
      DOI: 10.1111/jai.13173
       
  • Length–weight relationships of six tropical fish species from
           Chilika Lagoon, India
    • Authors: D. Panda; S. K. Karna, M. Mukherjee, R. K. Manna, V. R. Suresh, A. P. Sharma
      First page: 1286
      Abstract: The length weight relationships (LWRs) of six tropical fish species from Chilika Lagoon, India were studied. Specimens were caught using a wide range of fishing gear operated in the lagoon from January to December 2014. The fresh specimens were measured for total length and weight, then dissected and the sex confirmed. Previously unavailable in FishBase, the detailed LWRs of Daysciaena albida, Eleutheronema tetradactylum, Etroplus suratensis and Mystus gulio are reported for the first time. Maximum total lengths reported for Nematalosa nasus and Osteogeneiosus militaris in this study are new records for these species. The existence of a differential growth between male and female O. militaris was confirmed, which was not known earlier.
      PubDate: 2016-09-02T08:15:22.033636-05:
      DOI: 10.1111/jai.13174
       
  • Length–weight relationships for three fish species from the Yalong
           River, southwestern China
    • Authors: W. Tang; C. Y. Sha, J. Q. Zhang, Q. Wang, W. Xiong, W. H. You
      First page: 1290
      Abstract: Length–weight relationships were determined for three fish species: Gymnodiptychus pachycheilus (Herzenstein, 1892), Discogobio yunnanensis (Regan, 1907), and Triplophysa pseudostenura (He, Zhang & Song, 2012). Samples were collected from the Yalong River, southwestern China using fishing gear (gillnets, 30 × 15 m, mesh-size 5 mm) and electroshock fishing (CWB-2000 P, 12 V, 250 HZ) in June 2007. Prior to this study, length–weight relationships for these three species were unknown. For two of the species [Discogobio yunnanensis (Regan, 1907) and Triplophysa pseudostenura (He, Zhang & Song, 2012)], new maximum standard lengths not yet reported in the scientific literature were noted.
      PubDate: 2016-08-30T03:45:46.35782-05:0
      DOI: 10.1111/jai.13177
       
  • Length–weight relationships for four fish species upstream in the
           Minjiang River, southeastern China
    • Authors: M. F. He; D. Q. Yuan, W. Xiong, Y. F. Chen
      First page: 1292
      Abstract: Length-weight relationships were determined for four fish species (Hemibarbus labeo Pallas, 1776; Tachysurus nitidus Sauvage & Dabry de Thiersant, 1874; Pseudobagrus vachelli Richardson, 1846; Glossogobius olivaceus Temminck & Schlegel, 1845) upstream in the Minjiang River, Fujian Province, in southeastern China. Samples were collected in 2012–2013 employing various fishing gear. This report is the first record of length–weight relationships for these species.
      PubDate: 2016-09-01T04:15:20.564032-05:
      DOI: 10.1111/jai.13178
       
  • Length–weight relationships for 19 labrid species from the southern
           Atlantic Ocean
    • Authors: G. C. Cardozo‐Ferreira; J.‐C. Joyeux
      First page: 1294
      Abstract: Length–weight relationships were estimated for 19 labrid species occurring in the southern Atlantic Ocean. Data were collected from 175 specimens between July 2013 and February 2014. Most specimens were obtained from ichthyological collections, but some were spear‐fished. Labridae is one of the most diverse and representative fish families in reef systems. Relationships are novel for 13 of the species, with the remainder representing an increase in their geographic extension or size range.
      PubDate: 2016-09-12T02:23:12.369068-05:
      DOI: 10.1111/jai.13179
       
  • Length–weight and length–length relationships of three fish species
           from the Yarlung Zangbo River in Tibet, China
    • Authors: Y. J. Duan; B. S. Ma, X. Yang, C. X. Xie, B. Huo
      First page: 1298
      Abstract: Length–weight relationships and length–length were evaluated for three fish species (Schizopygopsis younghusbandi Regan, 1905; Ptychobarbus dipogon Regan, 1905 and Oxygymnocypris stewartii Lloyd, 1908) from the Yarlung Zangbo River in Tibet. Specimens were captured monthly using floating gillnets (mesh size 7.5 cm), bottom gillnets (mesh size 6.5 cm), and trap nets (mesh size 1.5 mm) from August 2008 to August 2009, March to August 2012, and March to April 2013. Regression coefficient (b) values of length–weight relationships (LWRs) ranged from 3.045 for P. dipogon to 3.193 for O. stewartii, whereas the a values ranged from 0.0040 to 0.0168 for O. stewartii and P. dipogon, respectively.
      PubDate: 2016-08-26T23:45:40.650222-05:
      DOI: 10.1111/jai.13180
       
  • Length–weight relationships of four fish species from a coastal
           artisanal fishery, southern Bangladesh
    • Authors: M. A. B. Siddik; M. R. Chaklader, M. A. Hanif, M. A. Islam, R. Fotedar
      First page: 1300
      Abstract: This study presents the first report of length–weight relationships (LWRs) for Apocryptes bato (Hamilton, 1822), Salmophasia phulo (Hamilton, 1822), and Silonia silondia (Hamilton, 1822), excluding Anodontostoma chacunda (Hamilton, 1822), from fishermen's catches landed in a coastal artisanal fishery at Patuakhali, Southern Bangladesh. Specimens were sampled occasionally over a period of 1 year between August 2014 and September 2015. Fishes were collected from coastal fishermen using cast nets (mesh size
      PubDate: 2016-09-09T23:20:52.511809-05:
      DOI: 10.1111/jai.13181
       
  • Length–weight relationships of three Gobiidae species from the Rupsha
           River in southwestern Bangladesh
    • Authors: M. Y. Hossain; A. K. Paul, M. A. Hossen, M. A. Islam, M. N. U. Pramanik, M. A. Islam, M. M. Rahman
      First page: 1305
      Abstract: This study reports the length–weight relationships (LWRs) of three Gobiidae fish species (Acentrogobius viridipunctatus, Apocryptes bato, and Odontamblyopus rubicundus) from the Rupsha River, southwestern Bangladesh. A total of 388 individuals were sampled using cast nets (mesh size ranges from 1.5 to 3.0 cm), gill nets (mesh size ranges from 2.0 to 3.0 cm) and square lift nets (mesh size ~1.5 cm) from December 2014 to November 2015. Allometric coefficient (b) values were 3.23 for A. viridipunctatus, 2.70 for A. bato, and 2.67 for O. rubicundus, respectively. The first LWRs records for these three Gobiidae species, they can be used online for FishBase as well as in future studies.
      PubDate: 2016-09-02T08:15:22.987837-05:
      DOI: 10.1111/jai.13183
       
  • Length-weight relationship of two cichlid fish species, Etroplus
           suratensis (Bloch, 1790) and Etroplus maculatus (Bloch, 1795) from Lake
           Vembanad, Kerala, India
    • Authors: K. Roshni; C. R. Renjithkumar, B. M. Kurup
      First page: 1308
      Abstract: The present study describes the length–weight relationships (LWRs) of two cichlid fish species, Etroplus suratensis (Bloch, 1790) and Etroplus maculatus (Bloch, 1795) collected from Vembanad Lake, Kerala, India during the period June 2012 to May 2013 using gill nets with various mesh sizes (3.5–9 cm) and cast nets with a 1.5 cm mesh size. The values of parameters b in the LWR equation were estimated as 2.67 for E. suratensis and 2.72 for E. maculatus, respectively.
      PubDate: 2016-07-12T01:55:33.017026-05:
      DOI: 10.1111/jai.13141
       
  • Length–weight relationships of six species of the genera Cobitis and
           Sabanejewia (Cobitidae) in Iranian river systems
    • Authors: H. Mousavi-Sabet; A. Heidari, K. Abbasi, S. Vatandoust
      First page: 1310
      Abstract: Length-weight relationships (LWRs) were estimated for six spined loach species from Iran. Data were collected between 2010 and 2015. These represent the first reports of length–weight data for five of the species (Cobitis avicennae, Cobitis faridpaki, Cobitis keyvani, Sabanejewia aurata and Sabanejewia caspia) while also providing additional data on the remaining species (Cobitis linea). Five of these species are endemic and the remaining S. caspia, is native to the country. Estimated b values obtained for the studied species ranged from 2.381 for S. aurata to 3.411 for C. keyvani.
      PubDate: 2016-07-26T02:15:21.895881-05:
      DOI: 10.1111/jai.13142
       
  • Length–weight relationships of four fish species from the MoTuo reach of
           the Yarlung Zangbo River, southwest China
    • Authors: L. Li; B. Ma, J.-L. Wang, C. Zhang, J.-H. Gong
      First page: 1313
      Abstract: Length–weight relationships (LWRs) were evaluated for four fish species from the MoTuo reach of the Yarlung Zangbo River, southwest China: Exostoma labiatum (McClelland, 1842), Schizothorax curvilabiatus (Wu & Tsao, 1992), Nemacheilus subfusca (McClelland, 1839), and Garra kempi Hora, 1921. The a values ranged from 0.0094 (Schizothorax curvilabiatus) to 0.0151 (Exostoma labiatum), b values from 2.698 (Exostoma labiatum) to 2.974 (Schizothorax curvilabiatus), and r2 values from 0.976 (Nemacheilus subfusca) to 0.995 (Schizothorax curvilabiatus). A total of 427 fish specimens were collected by electrofishing in April 2015, with LWRs previously unknown to FishBase for four of the species. New maximum lengths are recorded in FishBase for three of these species: Schizothorax curvilabiatus, Nemacheilus subfusca, and Garra kempi.
      PubDate: 2016-10-19T23:50:22.301755-05:
      DOI: 10.1111/jai.13120
       
  • Length–weight relationships for 15 fish species of the Xun Jiang
           River in Guangxi, China
    • Authors: J. Li; A.-L. Wang, X.-H. Li, S.-L. Zhu, Z. Wu
      First page: 1315
      Abstract: Length–weight relationships (LWRs) were estimated for 15 species belonging to four orders and five families from the Xunjiang River, China. Exponent b varied from 2.364 to 3.634, and r2 values varied from .914 to .991. This is the first LWR report in the area for these species, seven species of which are published for the first time.
      PubDate: 2016-10-04T07:32:08.254906-05:
      DOI: 10.1111/jai.13155
       
  • Length–weight relationships for four fish species upstream in the
           Minjiang River, southeastern China
    • Authors: M. F. He; D. Q. Yuan, W. Xiong, Y. F. Chen
      First page: 1318
      Abstract: Length–weight relationships were determined for four fish species (Hemibarbus labeo Pallas, 1776; Tachysurus nitidus Sauvage & Dabry de Thiersant, 1874; Pseudobagrus vachelli Richardson, 1846; Glossogobius olivaceus Temminck & Schlegel, 1845) upstream in the Minjiang River in Fujian Province, southeastern China. Samples were collected employing various fishing gear in 2012–2013. The present report is the first record of the length–weight relationships for these species.
      PubDate: 2016-08-19T04:25:44.479172-05:
      DOI: 10.1111/jai.13156
       
  • Length–weight relationships of five endemic fish species from the lower
           Yarlung Zangbo River, Tibet, China
    • Authors: J. Wang; F. Liu, Z. Gong, P.-C. Lin, H.-Z. Liu, X. Gao
      First page: 1320
      Abstract: The length–weight relationships were estimated for five endemic fishes (Schizothorax curvilabiatus, Schizothorax molesworthi, Garra kempi, Neolissochilus hexagonolepis, Exostoma labiatum) from the Yarlung Zangbo River in Tibet, China. Fishing gear used for sampling included 4 cm mesh gill nets (100 m long × 1.2 m high) and electrofishing, from December 2015 to January 2016. Three of the species have new records of maximum length in FishBase.
      PubDate: 2016-10-24T01:45:32.380667-05:
      DOI: 10.1111/jai.13222
       
  • Length–weight and length–length relationships for three Sillago
           species (Sillaginidae) from the Persian Gulf
    • Authors: M. S. Alavi-Yeganeh; S. N. Mirhadi, M. Nasri
      First page: 1322
      Abstract: This study investigates length–length and length–weight relationships of three Sillago species [Sillago arabica McKay & McCarthy (Memoirs of the Queensland Museum, 27, 1989, 551), Sillago attenuata McKay, 1985 and Sillago sihama (Forsskål, 1775)] captured in the Persian Gulf, Iran. A collection of 220 specimens was captured from August 2015 to January 2016 by cast net (mesh size: 10 mm) and beach seine (mesh size: 15 mm). The relationships of total length (TL) and standard length (SL) and the relationships between total length and body weight are given. This study presents the first reference on LWRs for two of the species (S. arabica and S. attenuata) in their range of distribution.
      PubDate: 2016-09-26T02:06:03.876841-05:
      DOI: 10.1111/jai.13223
       
  • Length–weight relationships of two cavefish species, Sinocyclocheilus
           jii Zhang & Dai, 1992 and Sinocyclocheilus guilinensis Ji, 1985
           (Cypriniformes: Cyprinidae)
    • Authors: J.-Q. Huang; Z.-Q. Wu, Y.-H. Zhao
      First page: 1324
      Abstract: Length–weight relationships of two cavefish species, Sinocylocheilus jii Zhang & Dai, (Acta Zootaxonomica Sinica, 17, 1992, 377) and Sinocyclocheilus guilinensis Ji, 1985, were calculated based on data from 186 specimens sampled by gill nets and fish traps from subterranean rivers of the Pearl River basin in China between 2008 and 2014. Results indicate that mean LWR parameters b for these two cavefish species are 2.88 and 2.61, respectively. A maximum size was recorded for S. jii.
      PubDate: 2016-10-04T07:32:09.377082-05:
      DOI: 10.1111/jai.13224
       
  • Length–weight and length–length relationships of 11 fish
           species from the Sea of Okhotsk
    • Authors: V. V. Kulik; N. N. Gerasimov
      First page: 1326
      Abstract: Estimated length–weight relationships are presented for 11 marine fish species representing six families, found above the continental shelf and in the pelagial of the Okhotsk Sea. A total of 13,841 specimens were caught by trawls that were equipped with a 1.0 by 1.2 cm mesh webbing inset. The period between 1974 and 2015 comprised mostly spring and autumn months. All length–weight relationships were highly significant (r2 ≥ .95) on a log scale. None of the species had previous length–weight estimates, and two species had no previous length–length estimates in the FishBase.
      PubDate: 2016-10-04T07:32:10.665762-05:
      DOI: 10.1111/jai.13225
       
  • Length–weight and length–length relationships of four endemic fish
           species from the middle reaches of the Yangtze River basin, China
    • Authors: J. Shao; J. Y. Li, H. Zhang, D. Q. Lin, X. Xie, J. M. Wu, Q. W. Wei
      First page: 1329
      Abstract: Length–weight (LWR) and length–length relationships (LLR) were evaluated for four endemic fish species, including Hemibagrus macropterus Bleeker, 1870; Rhinogobio cylindricus Günther, 1888; Rhinogobio typus Bleeker, 1871; and Siniperca scherzeri Steindachner, 1892, in the middle reaches of the Yangtze River basin. A total of 252 specimens were collected using gillnets and cast nets between November 2014 and January 2016. No information regarding length–weight and length–length relationships were reported previously in FishBase for these four endemic species.
      PubDate: 2016-08-08T10:03:35.578302-05:
      DOI: 10.1111/jai.13158
       
  • Length–weight relationship of nine fish species from Skadar Lake
           (Adriatic catchment area of Montenegro)
    • Authors: D. Milošević; D. Mrdak
      First page: 1331
      Abstract: This study provides data on the length–weight relationships (LWR) of nine fish species sampled between 2010 and 2014 from Skadar Lake, Montenegro. Also provided are the first comprehensive data of LWRs for three freshwater fishes for which no LWR information was available in the FishBase data bank. The b parameter values ranged from 2.936 to 3.271, while values of the a parameter ranged from 0.002 to 0.014.
      PubDate: 2016-08-26T23:45:42.068313-05:
      DOI: 10.1111/jai.13163
       
  • Length–weight relationship of six deep-sea fish species from the shelf
           regions of western Bay of Bengal and Andaman waters
    • Authors: K. V. Aneesh Kumar; R. Thomy, K. P. Deepa, M. Hashim, M. Sudhakar
      First page: 1334
      Abstract: Length–weight relationships for six deep-sea fish species inhabiting the shelf regions of the western Bay of Bengal and the waters of Andaman and Nicobar of India are presented. Samples were collected using high-speed demersal trawl and expo demersal trawl nets at depths of 231–514 m in August and September 2010. The b values in the analyses ranged from 3.05 to 3.31, showing a mean and median value of 3.21 (SE ± 0.039, SD ± 0.097) and 3.2, respectively. Comparisons of b values with earlier estimations confirm the presence of spatial and temporal variations in the length–weight relations among the species. Coefficient of determination scores ranged from 0.94 to 0.97, indicating robustness of the samples analysed. This study provides the first estimates of length–weight relationships for four of the deep-sea fishes, enriching the understanding of the growth patterns and population dynamics of these less-studied deep-sea fishery resources in Indian Ocean waters.
      PubDate: 2016-08-30T03:45:23.748321-05:
      DOI: 10.1111/jai.13164
       
  • Length–weight relationships of three freshwater cyprinid fish species
           from Chalakudy River, South Western Ghats, India
    • Authors: C. R. Renjithkumar; K. Roshni, B. M. Kurup
      First page: 1340
      Abstract: This paper provides length‐weight relationships (LWRs) for three freshwater cyprinid fish species: Barbodes carnaticus (Jerdon, 1849), Hypselobarbus kolus (Sykes, 1839) and Tor khudree (Sykes, 1839) from the Chalakduy River in South Western Ghats of India. Fish samples were collected on a monthly basis between April 2011 to March 2012 using gill nets of different mesh sizes (3.5–10 cm). LWRs for these three species had not been previously reported in FishBase.
      PubDate: 2016-09-23T00:00:28.62825-05:0
      DOI: 10.1111/jai.13196
       
  • Length–weight and length–length relationships for 23 fish species of
           Porto Primavera reservoir, Upper Paraná River, Brazil
    • Authors: H. Marques; A. B. Nobile, J. H. P. Dias, I. P. Ramos
      First page: 1342
      Abstract: The study presents length–weight relationships (LWR) and length–length relationships (LLR) for 23 fish species captured in the Porto Primavera Reservoir, Upper Paraná River. Seventeen of the LWRs and 20 of the LLRs are reported for the first time. New maximum standard lengths are presented for 17 species as well as weights for three species and new total weight records for 19 species.
      PubDate: 2016-10-04T07:32:03.411282-05:
      DOI: 10.1111/jai.13197
       
  • Length–weight relationships for two abundant rocky reef fishes from
           northern Patagonia, Argentina: Sebastes oculatus Valenciennes, 1833 and
           Pinguipes brasilianus Cuvier, 1829
    • Authors: L. A. Venerus; G. L. Villanueva Gomila, M. C. Sueiro, N. D. Bovcon
      First page: 1347
      Abstract: The Patagonian rockfish Sebastes oculatus and the Brazilian sandperch Pinguipes brasilianus are two of the most abundant, conspicuous reef fishes in the northern Patagonian gulfs of Argentina. This study provides separate length–weight relationships for males, females and pooled individuals of these species for the North Patagonian region, based on samples collected between 2009 and 2014 throughout the year between 42°S and 45°S. No length–weight relationships for P. brasilianus were heretofore available in the literature. Although one relationship was published for S. oculatus from Chilean waters, the limited number of fish and size range did not allow an accurate estimate of the model parameters.
      PubDate: 2016-10-04T07:31:53.666138-05:
      DOI: 10.1111/jai.13207
       
  • Length–weight and length-length relationships for four freshwater fish
           species from Gölbaşı Lake (Hatay), Turkey
    • Authors: G. Özcan; A. Altun
      First page: 1350
      Abstract: Length–weight and length–length relationships are presented for four freshwater fish species [Liza abu (Heckel, 1843), Aphanius mento (Heckel, 1843), Oxynoemacheilus hamwii (Krupp & Schneider, 1991) and Chondrostoma kinzelbachi Krupp, 1985] captured in Gölbaşı Lake, Hatay, Anatolia. No information regarding length–weight relationships was reported previously in FishBase for C. kinzelbachi, A. mento and O. hamwii. Specimens were obtained from January to May 2012 using electrofishing and cast nets. This study presents the first study on LWR data for C. kinzelbachi, A. mento and O. hamwii.
      PubDate: 2016-10-11T04:31:43.450303-05:
      DOI: 10.1111/jai.13215
       
  • Length–weight relationships for 36 deep‐sea fish in the
           Colombian Caribbean Sea
    • Authors: J. De La Hoz-M; J. Motta, J. Paramo
      First page: 1356
      Abstract: Length–weight relationships (LWR) for 36 deep‐sea fish species belonging to 22 families are provided. Samples were collected during 2009 by trawling with the sampling design stratified by depths ranging from 200 to 550 m in the Colombian Caribbean Sea. To the best knowledge of the authors, this study represents the first study on length–weight relationships for 17 species worldwide, as well as 13 new maximum lengths.
      PubDate: 2016-09-26T02:06:10.105883-05:
      DOI: 10.1111/jai.13217
       
  • Length–weight relationships for 11 species at three small hydropower
           plants on the Sapucaí-Mirim River (Grande River basin, Brazil)
    • Authors: D. Freitas-Souza; A. B. Nobile, F. P. Lima, S. G. C. Britto, M. G. Nogueira
      First page: 1360
      Abstract: This paper presents length–weight relationships (LWR) for 11 freshwater fish species from the Sapucaí-Mirim River, a tributary of the Grande River basin, São Paulo, Brazil. The specimens were captured in quarterly samplings between March 2011 and December 2014, using gillnets of mesh size: 1.5–9.0 cm between knots. The present study adds new information for the maximum length of seven species, and presents new LWR records for four species.
      PubDate: 2016-10-24T01:45:36.818591-05:
      DOI: 10.1111/jai.13232
       
  • Length–weight relationships of three fish species from the Yalong
           River, China
    • Authors: M. Zhang
      First page: 1363
      Abstract: Length–weight relationships (LWRs) were determined for three fish species (Gymnodiptychus pachycheilus (Herzenstein, 1892), Triplophysa bleekeri (Sauvage & Dabry de Thiersant, 1874) and Triplophysa pseudostenura (He, Zhang & Song, 2012)) from the Yalong River in China. Samples were obtained between March 2009 and July 2013 using gillnets (25 × 12 m, mesh size 0.5 cm) and fish cages (0.5 × 0.5 × 10 m, mesh size 0.5 cm mesh). For each species, the sample size, length range, weight range, LWR, 95% confidence intervals of a and b, and coefficient of correlation were determined. Prior to this study, the LWRs for these three species were unknown.
      PubDate: 2016-10-11T04:31:11.47591-05:0
      DOI: 10.1111/jai.13233
       
  • Length-weight relationships of 10 freshwater fishes from the Busan
           Metropolitan City in South Korea
    • Authors: D.-K. Kim; J.-S. Gim, J.-D. Yoon, Y. Do, G.-J. Joo, H. Jo
      First page: 1365
      Abstract: The length-weight relationships (LWRs) for 10 freshwater fish species in catchment area of Busan Metropolitan City, South Korea, were analyzed. Fish samples were collected quarterly using scoop-nets (mesh 5 mm), casting nets (mesh 7 mm) and gill nets (mesh 20, 50 and 70 mm) from 2011 to 2016. LWRs data for seven of these species have not yet been listed in FishBase.
      PubDate: 2016-10-15T01:50:32.839768-05:
      DOI: 10.1111/jai.13228
       
  • Length–weight and length–length relationships for four fish species
           from Talkhehrud River, Urmia Lake basin, Iran
    • Authors: Y. Keivany; M. Zamani‐Faradonbeh
      First page: 1368
      Abstract: Length–weight and length–length parameters were calculated in the Talkhehrud River, northwestern Iran, for four freshwater fish species belonging to two families. The b values varied between 2.27 and 3.19, with a mean ± SD of 2.2777 ± 0.387. The b parameter values in the length–weight relationship equations were determined as 2.73 for Alburnus atropatenae Berg, 1925; 3.19 for Alburnoides petrubanarescui Bogutskaya & Coad, 2009; 2.92 for Capoeta capoeta (Güldenstädt, 1773); and 2.27 for Oxynoemacheilus persa (Heckel, 1847). This study provides the first reference on the LWRs and LLRs for these species in the Talkhehrud River.
      PubDate: 2016-09-12T02:23:13.912697-05:
      DOI: 10.1111/jai.13187
       
  • Species composition of benthic fish fauna in the Sea of Marmara, Turkey
    • Authors: H. Torcu Koç; F. Üstün, Z. Erdoğan, L. Artüz
      Abstract: In order to determine the present benthic fish fauna in the Sea of Marmara, sampling was conducted at a total of 10 stations for 2 weeks in August 2009, using a commercial twin beam trawling vessel with 18 and 36 mm stretched mesh sizes at the cod-end. In addition, some physicochemical parameters that play important roles, such as temperature, salinity, dissolved oxygen, and pH, were measured for each station. As a result, 31 fish species from 23 families were found at a total of 10 stations in depths of 30–1000 m. At each station, the Shannon–Weaver diversity index, Simpson dominance index, species richness index, and evenness index were estimated. This study reports on species composition of the demersal fish catches in the Sea of Marmara for a preliminary assessment of the status of these fish communities.
      PubDate: 2012-07-18T00:31:57.14121-05:0
      DOI: 10.1111/j.1439-0426.2012.02037.x
       
  • Biology and life history of Green Sturgeon (Acipenser medirostris Ayres,
           1854): state of the science
    • Abstract: Green Sturgeon (GRS) Acipenser medirostris is one of the most marine-oriented of all sturgeons. It primarily spawns in the Sacramento, Klamath, and Rogue Rivers, yet lives most of its life in estuarine and coastal waters along the West Coast of North America. Spawning is only known to occur in the Rogue, Klamath and Sacramento rivers and optimal temperatures for egg incubation and larval growth are not always maintained in these dammed and highly-regulated systems. Genetic analysis and acoustic telemetry have confirmed the presence of two genetically distinct populations; the southern population is listed as “threatened” under the ESA. Adults only enter natal rivers to spawn every 1–4 years. They make extensive coastal migrations in depths
       
  • Status of knowledge of the Pallid Sturgeon (Scaphirhynchus albus Forbes
           and Richardson, 1905)
    • Abstract: The Pallid Sturgeon is listed as federally endangered under the Endangered Species Act in the United States. When the species was listed in 1990 it was considered extremely rare and was poorly understood. Habitat alteration, commercial harvest, environmental contaminants, and other factors were identified as threats. Today our scientific understanding of the species and its life history requirements have increased greatly as summarized below.
       
  • Length-weight relationships of five fish species in Tibet, southwest China
    • Abstract: Length-weight relationships (LWR) were evaluated for five species: Schizothorax integrilabiatus (Wu et al., 1992); Shizopygopsis stoliczkai Steindachner, 1866; Gymnocypris chui Tchang, Yueh & Hwang, 1964; Gymnocypris scleracanthus Tsao, Wu, Chen & Zhu, 1992; and Triplophysa tibetana (Regan, 1905). A total of 567 specimens were collected whereby S. integrilabiatus was caught with 12-volt electric fishing gear (water depth, 1 m) in Buqun Lake in May 2015. Both G. chui and G. scleracantus were caught with 12-volt electric fishing gear (water depth,1 m) and set gillnets (mesh size 3 cm) in Lange Lake in July 2015, S. stoliczkhai was caught with 3 cm mesh size set gillnets in Shiquan River in August 2015, T. tibetana was caught with 12 V electric fishing gear in the Zhongba reach of the Yarlung Zangbo River in August 2015. This study provides the first published length–weight references on LWR for the five species. New maximum total lengths were recorded for three species, including Shizopygopsis stoliczkai, Gymnocypris chui, and Gymnocypris scleracanthus.
       
  • Status of scientific knowledge of North American sturgeons
    • Abstract: Sturgeon and paddlefish were historically the dominant large fishes in all major Northern American Rivers. All ten species have been affected the past 150 years from anthropogenic stressors such that they are considered imperiled by various jurisdictions. Status papers have been presented for each species as part of a special publication on North American Acipenseriformes. The objective of this paper is to provide a summary of the similarities and differences in life history, habitat requirements, and stressors among the species. Optimistically, this would facilitate better management of the order as a whole if management actions for one species can inform another, especially in situations where populations are too low to obtain pertinent information.
       
 
 
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