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Journal Cover   Journal of Applied Ichthyology
  [SJR: 0.482]   [H-I: 36]   [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  [1607 journals]
  • Effects of catching methods on quality changes of Rutilus kutum (Kamensky,
           1901) during storage in ice
    • Authors: P. Raoofi; S. M. Ojagh, B. Shabanpour, M. Eighani
      Abstract: The quality of fish varies among the different methods of capture and storage times. In this study Rutilus kutum was captured by beach seine and gillnet and stored for up to 16 days; thereafter the changes in microbiological quality (total viable and psychrophilic counts) and chemical quality (pH, total volatile basic nitrogen, thiobarbituric acid, and free fatty acids) were evaluated. The storage time and method of capture had significant effects (P 
      PubDate: 2015-05-15T08:58:28.125031-05:
      DOI: 10.1111/jai.12795
       
  • Length‐weight and length‐length relationships of four Alosa
           species along the southern Caspian Sea coast
    • Authors: S. R. Ghotbi‐Jokandan; M. S. Alavi‐Yeganeh, S. Jamshidi
      Abstract: This study investigates length‐weight and length‐length relationships of four shad species (Alosa braschnikowi, Alosa caspia, Alosa kessleri, and Alosa saposchnikowii) captured on the southern Caspian Sea coast of Iran. The relationship of total length (TL), fork length (FL) and standard length (SL) and the relationship between total length and body weight are presented.
      PubDate: 2015-05-15T08:58:12.76612-05:0
      DOI: 10.1111/jai.12790
       
  • Fatty acid composition of wild Odontesthes bonariensis (Valenciennes 1835)
           larvae: implications on lipid metabolism and trophic relationships
    • Authors: G. A. Kopprio; M. Graeve, G. Kattner, R. J. Lara
      Abstract: The fatty acid composition of the pejerrey Odontesthes bonariensis larvae was studied to elucidate potential dietary relationships. Their principal fatty acids were characteristic for membrane lipids of aquatic organisms. The fatty acid composition varied little throughout seasons, with high proportions of 22 : 6(n‐3) (27% of total fatty acids), which is biosynthesized de novo from dietary precursor fatty acids and/or accumulated from the diet. Other major fatty acids were 16 : 0 and 18 : 0. The diatom‐typical 16 : 1(n‐7) and other dietary fatty acids (zooplankton and microplankton) are not reflected in the larvae, thus limiting the use of fatty acids as trophic markers for food web relationships of atherinopsids.
      PubDate: 2015-05-15T08:57:56.842721-05:
      DOI: 10.1111/jai.12786
       
  • Length–weight relationships of three fish species from the Tajan
           River, Iran
    • Authors: H. Jamali; M. Faramarzi, R. Patimar, S. Kiaalvandi
      Abstract: The study describes the length–weight relationships for two Cobitid species, namely Cobitis keyvani and Sabanejewia aurata, plus a Gobiid species, Ponticola gorlap, all from the Tajan River in Mazandaran province, Iran.
      PubDate: 2015-05-14T02:29:44.893521-05:
      DOI: 10.1111/jai.12793
       
  • Spatio‐temporal dynamics in the location of the fishing grounds and
           catch per unit effort (CPUE) for Chilean jack mackerel (Trachurus murphyi
           Nichols, 1920) from Chinese trawl fleets on the high seas of the Southeast
           Pacific Ocean, 2001–2010
    • Authors: H. Zhang; S.‐M. Zhang, X.‐S. Cui, S.‐L. Yang, C.‐J. Hua, H.‐Y. Ma
      Abstract: The decadal spatio‐temporal distribution of the fishing effort and catch per unit effort (CPUE) for Chilean jack mackerel, Trachurus murphyi, stock are poorly understood. Data from the Chinese jack mackerel fleet was used to describe the location of the fishing effort and the relationship between standardized CPUE and sea surface temperatures (SST) during the period 2001–2010. A significant change in the spatio‐temporal distribution of fishing effort and standardized CPUE was observed for jack mackerel during the study period. From January to March, the average CPUE was generally
      PubDate: 2015-05-14T00:54:18.271683-05:
      DOI: 10.1111/jai.12765
       
  • Fish by‐catch in shrimp beam trawls in the northern South China Sea
    • Authors: B.‐Z. Yang; L. Yang, P. Zhang, Y.‐G. Tan, L. Yan, S. Chen
      Abstract: The by‐catch of shrimp beam trawl fisheries in the northern South China Sea were estimated during the 2005–2006 and 2012–2013 fishing seasons. A total of 98 hauls from three important shrimp fishing grounds were used in the analyses. A total of 119 by‐catch species were captured, compared with only 15 target species. The ratio of by‐catch to shrimp ranged from 1.01 to 13.90. The dominant standard length (SL) range of fish by‐catch was 51–100 mm. The percentage of juveniles in the total catch of some fish species was high (e.g. 100% for A. aneus).
      PubDate: 2015-05-01T23:47:28.918997-05:
      DOI: 10.1111/jai.12777
       
  • Issue Information
    • PubDate: 2015-04-24T06:25:13.163537-05:
      DOI: 10.1111/jai.12575
       
  • Length–weight and length–length relationships for nine fish
           species from Lhasa River Basin, Tibet, China
    • Authors: L.‐Q. Fan; X.‐J. Zhang, G. Pan
      Abstract: The present study reports length–weight relationships (LWR) and length–length relationships (LLR) for five native freshwater fish species (Schizopygopsis younghusbandi, Triplophysa orientalis, T. tibetana, T. stewartii and T. stenura) and four introduced freshwater fish species (Pseudorasbora parva, Carassius auratus, Micropercops cinctus and Oryzias latipes) captured in the Lhasa River Basin, Tibet, China. Five of the LWRs are presented for the first time.
      PubDate: 2015-04-23T00:23:29.493152-05:
      DOI: 10.1111/jai.12760
       
  • The effects of tissue type and body size on δ13C and δ15N values
           in parrotfish (Labridae) from Zanzibar, Tanzania
    • Authors: J. G. Plass‐Johnson; C. D. McQuaid, J. M. Hill
      Abstract: Differences between the stable isotopic ratios (δ13C and δ15N) of two tissues (blood and muscle) from four species of East African coral reef parrotfishes (family: Labridae, tribe: Scarini) were analysed across a broad spectrum of body sizes. Comparison of isotopic ratios between the tissues allowed the assessment of using blood as an alternative tissue to muscle. In 2010–2011, constant differences between tissues (δblood minus δmuscle) were found across a broad range of sampled fish lengths. Linear relationships between the tissues, specific for an isotope, indicate that constants could be generated for converting blood isotope into muscle isotope values. Only one species, Chlorurus sordidus, displayed an inconsistent difference between tissues in δ15N, indicating that this ratio was dependent on fish length. The δ13C of both tissues was positively related linearly to fish length for three species, while δ15N showed no relationship with body length. The results are interpreted as indicating dietary consistency over days to weeks, the time of tissue turnover for blood and muscle, respectively. Lastly, differences among the species, even closely related species, show that the generation of tissue conversion constants is species‐specific.
      PubDate: 2015-04-20T05:33:21.65657-05:0
      DOI: 10.1111/jai.12746
       
  • The effects of storage time of frozen pike (Esox lucius Linnaeus, 1758)
           fillets on the chemical composition as determined by various deterioration
           indicators
    • Authors: M. Hajisafarali; B. Karami, S. Moini, S. Safi
      Abstract: The study was designed to investigate the effects of frozen storage on the proximate composition and chemical indices of pike (Esox lucius) stored for a period of six months at −20°C. During storage the moisture, protein and fatty acid contents decreased and the ash, total volatile basic nitrogen (TVB‐N) and peroxide value (PV) content increased significantly (P 
      PubDate: 2015-04-16T06:33:02.777693-05:
      DOI: 10.1111/jai.12770
       
  • The in vitro antifungal activity of 30 Chinese herb extracts to
           Saprolegnia sp.
    • Authors: X. L. Huang; R. J. Liu, S. Whyte, Z. J. Du, D. F. Chen, Y. Q. Deng, K. Y. Wang, Y. Geng
      Abstract: Chinese traditional medicines have been used for several thousands of years in Asian countries, not only in humans but also in many animal species. These compounds prevent and control different types of diseases including internal diseases as well as some infectious diseases, where the aetiological agent is viral, bacterial, parasitic or mycotic. Rhizoma coptidis is believed to inhibit Shigella dysenteriae and that Radix isatidis can prevent flu caused by the influenza virus. It is thus hypothesized that some of these traditional herbal compounds will have anti‐fungal activity. Saprolegniosis is a disease common in fish and their eggs in both fresh and brackish water; a newer, safer medication against Saprolegnia is needed after the prohibition in many countries of the extremely effective fungicide, malachite green. In the present study an attempt is made to identify herbal compounds that have anti‐Saprolegnia activity. A strain of Saprolegnia, CCF1301, was isolated from the skin of infected grass carp (Ctenopharyngodon idella) and identified as Saprolegnia ferax by the 26S rDNA D1/D2 region and ITS region. This strain was used to evaluate the antifungal activity of thirty Chinese traditional herbal medicine extracts, and a modified dish dilution method was developed for the evaluation. Saprolegnia‐infected rapeseeds with visible hyphae were transplanted onto prepared PDA plates containing 2 g L−1 herbal plant extracts and incubated at 20°C for 48 h. Each herbal plant species was tested in triplicate. Those herbal plant extracts that showed negative mycelium presence at 2 g L−1 were further tested for minimum inhibitory concentration (MIC) evaluation. The results showed that Syzygium aromaticum, Magnolia officinalis, Melaphis chinensis, Euphorbia fischeriana Steud, and Sophora flavescentis exhibited enhanced growth inhibition at 2 g L−1 and MIC values of 500, 62.5, 250, 62.5, 250 mg L−1 concentrations, respectively. It was obvious that Magnolia officinalis and Euphorbia fischeriana Steud exhibited the best antifungal activity. Since there is a high natural toxicity in Euphorbia fischeriana Steud, its applicability as the main ingredient in an aquaculture therapeutic formulation requires further research. Thus, Magnolia officinalis would appear to be the more valuable antifungal herbal species with which to pursue further research.
      PubDate: 2015-04-10T06:42:50.457998-05:
      DOI: 10.1111/jai.12773
       
  • Length–weight relationships of thirty‐seven fish species from
           the Hongshui River, Southwest China
    • Authors: Y. F. Que; L. Pan, F. Chen, S. Xie, X. L. Liao, N. Zhao
      Abstract: Length‐weight relationships (LWR) were estimated for 37 fish species belonging to ten families from the middle and lower stream of the Hongshui River, one of the main tributaries to the Pearl River, Southwest China. Length‐weight relationships for 26 species are unknown to FishBase and new maximum lengths are recorded for 20 species. These results are useful for fishery research, conservation and management in the Hongshui River.
      PubDate: 2015-04-09T06:38:45.687714-05:
      DOI: 10.1111/jai.12759
       
  • Effects of dietary xanthophylls/astaxanthin ratios on the growth and skin
           pigmentation of large yellow croaker Larimichthys crocea (Richardson,
           1846)
    • Authors: X.‐W. Yi; J. Li, W. Xu, Y.‐J. Zhang, H.‐H. Zhou, A. A. Smith, W.‐B. Zhang, K.‐S. Mai
      Abstract: An 8‐week feeding trial was conducted to evaluate the effects of dietary xanthophylls/ astaxanthin ratio on the growth and skin color of large yellow croaker, Larimichthys crocea. Five pigment‐supplemented diets were formulated to contain 75/0, 50/25, 37.5/37.5, 25/50 and 0/75 mg kg−1 of xanthophylls/astaxanthin. The xanthophylls contain 89.31% lutein and 6.12% zeaxanthin. A diet without pigment supplementation was used as the control. The large yellow croaker juveniles (13.80 ± 0.03 g) were randomly distributed in 18 sea cages (1.0 × 1.0 × 1.5 m) at a density of 45 fish per cage. Water temperature ranged from 21 to 31°C during the feeding trial. To obtain results, the survival rate, specific growth rate, feed conversion ratio, skin redness, skin yellowness, skin lightness, skin carotenoid content and skin melanin content were measured. The results showed that the survival rate, specific growth rate and feed conversion ratio were not significantly affected by dietary treatments (P > 0.05). The ventral skin lightness was also not affected by dietary treatments (P > 0.05); however, the dorsal skin lightness of fish fed with the control diet was significantly lower than those fed with pigment‐supplemented diets (P  0.05). Lightness and yellowness were linearly related to skin carotenoid content. Meanwhile, skin yellowness and carotenoid content were linearly related to the proportion of xanthophylls in dietary pigments.
      PubDate: 2015-04-09T06:38:29.965925-05:
      DOI: 10.1111/jai.12763
       
  • Invasive bivalve assessment in the diet of pejerrey, Odontesthes
           bonariensis (Valenciennes, 1835), at the Upper Río de la Plata,
           Argentina
    • Authors: F. Brancolini; M. E. Maroñas, E. D. Sendra, D. C. Colautti
      PubDate: 2015-04-08T23:57:20.580844-05:
      DOI: 10.1111/jai.12753
       
  • Seasonal growth of Mugil liza Valenciennes, 1836 in a tropical estuarine
           system
    • Authors: M. F. Sousa; N. N. Fabré, V. S. Batista
      Abstract: Seasonal changes in the abiotic factors and cyclical events – with the reproduction diagnosed by the gonadosomatic index and the energy status diagnosed by the condition index – were estimators of seasonal growth for juvenile and adult lebranche mullets, Mugil liza, during the rainy and dry seasons in a tropical estuarine system of the western south Atlantic. Fish were collected monthly by gillnets of different mesh sizes. Salinity, water temperature (°C) and dissolved oxygen (%) were measured using a multiparameter. Daily rainfall data (mm) were obtained from the National Institute of Meteorology. Seasonal rings were identified and counted in the sagittae otoliths. Relative Marginal Increment (RMI) was calculated to determine the seasonal growth rate. Gonadosomatic Index (GSI) and Condition Index (CI) were assessed separately for juveniles and adults by anova, with time (month) M. liza growth is controlled by annual cycles of biological and abiotic processes. Using general linear models, the seasonal growth rate of M. liza was well predicted by body condition and rainfall for juveniles, and by salinity for adults. Seasonal variation was observed in the Mundaú Lagoon, with rainfall directly or indirectly being the main seasonal factor influencing the cyclical biological fish processes of M. liza.
      PubDate: 2015-04-08T23:47:22.444413-05:
      DOI: 10.1111/jai.12704
       
  • Occurrence of Cyprinus carpio (Linnaeus, 1758) in a World Biosphere
           Reserve, the Mar Chiquita Coastal Lagoon (Argentina)
    • Authors: M. González‐Castro; J. J. Rosso, N. A. Lajud, D. L. Castellini, J. M. Díaz de Astarloa
      PubDate: 2015-04-08T07:10:40.940424-05:
      DOI: 10.1111/jai.12780
       
  • On the occurrence of live sharksucker, Echeneis naucrates Linnaeus, 1758
           (Perciformes: Echeneidae), in Turkish waters (Eastern Mediterranean)
    • Authors: O. Akyol; C. Capapé
      PubDate: 2015-04-08T07:06:35.587766-05:
      DOI: 10.1111/jai.12775
       
  • Use of dolphins and caimans as bait for Calophysus macropterus
           (Lichtenstein, 1819) (Siluriforme: Pimelodidae) in the Amazon
    • Authors: S. M. Brum; V. M. F. Silva, F. Rossoni, L. Castello
      Abstract: A new fishery has been developing in the Amazon that uses dolphin and caiman species as bait to catch piracatinga (Calophysus macropterus), having thus the potential to cause adverse food‐web impacts; however a lack of basic understanding of this fishery is a limitation to the necessary management action. Interviews with fishers and analyses of fishing records in Brazil were used for the study, including harvest methods, types of baits used, commercialization chains, and the rate of increase of piracatinga yields in recent years. Piracatinga fishers are subsistence fishers who harvest piracatinga as a means to alleviate economic constraints when the catch of other species is not profitable or banned due to (reproductive) closed seasons. Harvesting is done with wooden and nylon crates and cages in which whole or pieces of caimans and dolphins are placed to attract the piracatinga, entrapping them. The piracatinga are then sold to intermediate sellers for resale to a few large fish freezing and processing plants for export to Colombia. Annual piracatinga yields in the study area increased at an average rate of 446.5% per year, from 865 kg in 2003 to 23 176 kg in 2009. Because dolphins and caimans comprise various endangered species, the Brazilian government has recently implemented a ban on this fishery, which can be enforced at fish freezing and processing plants. However, there is a danger that such enforcement will lead to the development of a geographically dispersed chain of commercialization and export, such as currently exists for other species including caimans, which would be impossible to control.
      PubDate: 2015-04-08T06:53:25.100516-05:
      DOI: 10.1111/jai.12772
       
  • Length‐weight relationships for nine fish species of Laohegou River,
           a tributary of upper Yangtze River, China
    • Authors: J. Lei; Y. Y. Liang, X. Y. Sui, Y. F. Chen
      Abstract: This paper provides length‐weight relationships for nine fish species from the Laohegou River, a tributary of the upper Yangtze River. Length‐weight relationships for six of these species are recorded for the first time. New maximum lengths for two species are also reported.
      PubDate: 2015-04-08T06:48:07.996822-05:
      DOI: 10.1111/jai.12756
       
  • Trawl selectivity‐induced evolution effects on age structure and
           size‐at‐age of largehead hairtail (Trichiurus lepturus)
           Linnaeus, 1758 in the East China Sea, China
    • Authors: P. Sun; Z.‐L. Liang, Y. Yu, Y.‐L. Tang, F.‐F. Zhao, L.‐Y. Huang
      Abstract: Increasing evidence has demonstrated that the life history traits of fishes have changed in many exploited populations, caused principally by intense fishing mortality and size‐selectivity of the fishing gear. Broad and intensive trawl fishing over an extended period has the enormous potential to change the biological characters of exploited fish populations. An individual‐based model was developed to explore the interactions between trawl fishing and evolutionary changes in length‐at‐age and age structure of an exploited fish population. A perennial fish population was simulated with a multiple age structure in the model to examine the effects of long‐term trawl fishing on hairtail, Trichiurus lepturus, in the East China Sea. The results revealed that distribution of the body length‐at‐age and the age structure of the fish population were irreversibly changed under long‐term trawl fishing. The simulated results confirm that the length‐at‐age is increasing shorter, the younger individuals dominate, the influence of trawl selectivity on the biological traits of the fish population is highly significant, and that these changes have potentially evolutionary consequences on the fish body length‐at‐age.
      PubDate: 2015-04-06T08:26:54.57799-05:0
      DOI: 10.1111/jai.12774
       
  • Experimental evaluation of using calcein and alizarin red S for immersion
           marking of bighead carp Aristichthys nobilis (Richardson, 1845) to assess
           growth and identification of marks in otoliths, scales and fin rays
    • Authors: H.‐J. Lü; M. Fu, D. Xi, W.‐Z. Yao, S.‐Q. Su, Z.‐L. Wu
      Abstract: In order to evaluate the effects of immersion marking with calcein (CAL) and alizarin red S (ARS) on growth and mortality of juvenile bighead carp Aristichthys nobilis, and assess mark quality in otoliths, scales, and fin rays, CAL from 50 to 200 mg L−1 and ARS from 150 to 300 mg L−1 concentrations were used. With the exception of non‐lateral line scales from 50 mg L−1 CAL treatments, immersion for 24 h produced detectable marks in sagittae, lateral line and non‐lateral line scales, and fin rays (dorsal, pectoral, ventral, anal, and caudal) at 100 days post‐marking. Detectable fluorescent marks in sagittae were readily observed at concentrations of 150–200 mg L−1 CAL or 150–300 mg L−1 ARS. Marks were poorly visible in all non‐lateral line scales from both CAL‐ and ARS‐treated groups. Fluorescent marks were readily detected in lateral line scales at 100–200 mg L−1 CAL or 150–300 mg L−1 ARS, and in fin rays at 150–200 mg L−1 CAL or 150–300 mg L−1 ARS. In particular, optimal marks were observed at the highest concentrations investigated in sagittae (300 mg L−1 ARS), lateral line scales (150–200 mg L−1 CAL or 250–300 mg L−1 ARS), and fin rays (200 mg L−1 CAL or 250–300 mg L−1 ARS). However, fluorescent marks visible to the naked eye were not produced by any of the CAL or ARS treatments in sagittae, scales, or fin rays during this experiment. In addition, there was no significant difference on survival and growth of marked fish compared to controls throughout the experiment (P > 0.05).
      PubDate: 2015-03-31T06:28:39.967047-05:
      DOI: 10.1111/jai.12778
       
  • Confirmation of the presence of the Atlantic tripletail, Lobotes
           surinamensis (Bloch, 1790), in the Sea of Oman
    • Authors: L. Jawad; N. Al‐Abri, H. Al‐Busaidi, J. M. Al‐Mamry
      PubDate: 2015-03-31T06:26:20.224441-05:
      DOI: 10.1111/jai.12779
       
  • Assessing the use of two southwestern Atlantic estuaries by different life
           cycle stages of the anadromous catfish Genidens barbus
           (Lacépède, 1803) as revealed by Sr : Ca and
           Ba : Ca ratios in otoliths
    • Authors: E. Avigliano; G. Velasco, A. V. Volpedo
      PubDate: 2015-03-25T04:19:32.01923-05:0
      DOI: 10.1111/jai.12766
       
  • Diel cycle size‐dependent trophic structure of neotropical fishes: a
           three year case analysis from 35 floodplain lakes in Colombia
    • Authors: A. Hernández‐Serna; C. Granado‐Lorencio, L. F. Jiménez‐Segura
      Abstract: Investigated were whether fish assemblages in 35 neotropical floodplain lakes along the Magdalena River, Colombia (ranging from 4 to 2333 ha) have a trophic structure that is dependent on fish body size within the diel cycle (24 h), and whether any changes to the trophic structure of fish assemblages occur during the diel cycle. Sampling was done during diel cycles in the rainy seasons between 2008 and 2011 (ten lakes in 2008, 20 in 2010, and five in 2011). Small fish (27–87 mm) were most active from 06:01 to 18:00, while larger predatory fish (>87 mm) were inactive during this time. In addition to fish body size, trophic group composition also varied throughout the diel cycle: insectivores, piscivores, and omnivore‐insectivores were the dominant groups from 06:01 to 18:00; carnivores, carnivore‐insectivores, and detritivores dominated from 18:01 to 06:00. This study highlights the importance of fish size in predicting predator‐prey interactions during different periods of the diel cycle.
      PubDate: 2015-03-25T04:17:16.48484-05:0
      DOI: 10.1111/jai.12748
       
  • Length‐weight relationships of fish species in Kordan River (Namak
           Lake basin), Iran
    • Authors: S. N. Tabatabaei; I. Hashemzadeh Segherloo, S. Eagderi, M. Zamani
      Abstract: Length‐weight relationships were estimated for three little‐known species in Kordan River, in the Namak Lake Basin, Iran. For all species the estimated length‐weight relationship parameters fell within normal distributions and predicted ranges.
      PubDate: 2015-03-25T04:16:44.558915-05:
      DOI: 10.1111/jai.12755
       
  • Maladaptive behavioural phenotypes in captive‐reared darters
           (Etheostoma caeruleum, Storer 1845)
    • Authors: A. L. Crane; M. J. Lampe, A. Mathis
      Abstract: The foraging and anti‐predator behaviour of captive‐reared rainbow darters (Etheostoma caeruleum) was compared to their wild‐caught counterparts. Wild‐caught darters responded with appropriate anti‐predator behaviour (reduced foraging activity) when exposed to alarm cues (e.g. stimuli from damaged skin) from both wild‐caught and captive‐reared darters, indicating that the diet in captivity did not inhibit the production of alarm cues. Captive‐reared individuals did not change their level of activity when exposed to alarm cues; however, their significantly lower baseline activity (movement and prey consumption) makes it unclear as to whether they actually failed to recognize risk. Regardless, captive‐reared darters showed little motivation to feed when food became available (i.e. they made few movements to obtain food) and appeared impervious to chemical cues indicating risk. Exposing captive‐reared individuals to both semi‐natural foraging opportunities and predator‐recognition training before their release is recommended.
      PubDate: 2015-03-25T04:03:46.047672-05:
      DOI: 10.1111/jai.12769
       
  • Age, growth and reproduction of the black sea bream Spondyliosoma
           cantharus (Linnaeus, ) (Sparidae) in the Gulf of Annaba (Algeria)
    • Authors: N. Boughamou; F. Derbal, M. H. Kara
      Abstract: The objective of this study was to determine the basic population‐specific parameters necessary for fish stock assessment in the Gulf of Annaba and to compare these with data from other Mediterranean regions. Black sea bream Spondyliosoma cantharus (Linnaeus, 1758) (N = 501) were collected monthly from January to December 2008 along the Algerian eastern coasts. More than 22 fish were collected each month and ranged in size from 13.4 to 40 cm total length, weighing from 36 to 1080 g eviscerated weight. Biological sampling included weighing and measuring the fish, gonad weighing, sex and maturity stage determination, and age estimation through otolith readings. Validity of the otolith readings for estimating age and growth was supported using the back‐calculation method. Estimated parameters of the von Bertalanffy model are: L∞ = 33.54 cm, W∞ = 633.46 g, k = 0.52 year−1 and to = −0.04 year. The growth performance index (φ) is: 2.76. The length‐weight relationship is: EW = 4.4.10−6 TL3.23. The spawning period occurred from February to May, while the gamete emission peaked in April. Females reached sexual maturity at 19.3 cm (2 years) and males at 21.3 cm (3 years). Sexual inversion occurs at approximately 24.3 cm. Spondyliosoma cantharus was characterized as being a protogynic hermaphrodite.
      PubDate: 2015-03-21T09:19:40.940495-05:
      DOI: 10.1111/jai.12714
       
  • Length–weight relationships and biological data of Odontobutis
           sinensis (Wu, Chen & Chong, 2002) from Liangzi Lake, China
    • Authors: J.‐F. Cao; X.‐F. Yang, R.‐B. Yang, K.‐J. Wei
      Abstract: This study provides the first biological information on a small freshwater benthic fish species Odontobutis sinensis (Wu, Chen & Chong, 2002) from Liangzi Lake, China. The length‐weight relationship was BW = 0.0080TL3.23. The male : female sex ratio was 1.56 : 1. Based on the gonadosomatic index (GSI), the spawning season is from April to June. Females first matured at 7.90 cm total length (TL). Absolute fecundity varied from 346 to 2588 eggs. Main food items consisted of crustaceans and smaller fishes.
      PubDate: 2015-03-17T00:18:22.374626-05:
      DOI: 10.1111/jai.12754
       
  • Identification ability of tetraploid microsatellite loci in parentage
           analysis
    • Authors: N. Zhao; Y. Qiao, B. Zhu, X. L. Liao, L. Pan, J. B. Chang
      Abstract: An anadromous fish, the Chinese sturgeon (Acipenser sinensis Gray) is included in the 1996 IUCN Red List of Threatened Species. To save populations from extinction, artificial propagation had been sought since the 1980s and was achieved in 2009. Additional genetic information and methods will become crucial components in genetic management of the residual A. sinensis population. Microsatellite markers can provide information on the family structure, to avoid inbreeding or founder effects. However, the polyploidy derivative nature of the A. sinensis genome has added difficulties in settling these problems. Given the costs associated with genetic data collection, the trade‐off between the amount of molecular data (how many loci are needed and which loci should be used) and the number of individuals sampled warrants consideration in order to maximize both efficiency and parentage analysis. Formulas to calculate the resolving power for tetraploid microsatellite loci in a given population are provided; these formulas are adapted from those fitted to the diploid loci in Neff et al. (Mol. Ecol., 9, 2000a, 515) and require genetic data only from the parent or parents in question, and an estimate of population allele frequencies. These formulas will help in addressing practical problems, such as the choice of genetic loci in A. sinensis conservation aquaculture programs.
      PubDate: 2015-03-14T03:41:44.247413-05:
      DOI: 10.1111/jai.12698
       
  • Effect of salt content on the denaturation of pike eel (Muraenesox
           cinereus Forsskål, 1775) actomyosin
    • Authors: J.‐L. Si; J.‐Q. Zheng, H. Li, Y.‐L. Zhang
      Abstract: Investigated were the effects of the salt content on the denaturation of actomyosin (AM) extracted from the dorsal muscle of pike eel, Muraenesox cinereus. The results indicated a notable amount of secondary structure change, particularly the α‐helix. Increasing the salt concentration reduced the Ca‐ATPase activity. Surface hydrophobicity of AM increased concomitantly with an increase in the salt concentration. Total and reactive sulfhydryls also changed with an increase in the salt concentration. Results of differential scanning calorimetry (DSC) indicated that the salt‐curing led to some shifts from high to lower transitional temperatures. Disulfide linkages and hydrophobic interactions appear to be critical for the changes in actomyosin.
      PubDate: 2015-02-21T00:39:02.203725-05:
      DOI: 10.1111/jai.12681
       
  • Diel pattern of fish presence at the Changzhou fishway (Pearl River,
           China) during the flood season
    • Authors: J. P. Tao; X. Wang, X. C. Tan, Y.‐P. Cai, Y. Qiao, J.‐B. Chang
      Abstract: Restoration of fish populations is required in China with the use of fishways at dammed rivers, but scant biological data is available for their design and operation. The Changzhou fishway (CFW) on the Pearl River is the largest in China, providing a channel for multispecies upstream migrations. This preliminary study used a combination of fish traps and hydroacoustic detection to document the diurnal presence of fish in the CFW, with the purpose of providing essential data for a future, solid performance of this fishway. Eighteen species from a total of 1362 fish individuals were collected in the traps. Three species were dominant, namely, Squaliobarbus curriculus, Pseudobagrus vachellii and Cirrhinus molitorella, altogether sharing proportions of 74.70 and 76.26% in the daytime and nighttime, respectively. Balanced by the up‐/downward movements of each fish, they entered the fishway with net numbers of 339.9 ± 113.4 ind.h−1, and exited with net numbers of 234.54 ± 26.66 ind.h−1. In diel fishway use, no significant differences were observed in either species composition or individual size during a diurnal period. Fish presence at the monitored sites within the fishway was recorded primarily during the daytime, showing a particular trend towards crepuscular use at the entrance and an uninterrupted use at the exit. This initial study showed a significant fish presence in the CFW during the flood season; the outcome of the study will be the basis of future research aimed at evaluating the passage efficiency of the CFW and the use thereof in other seasons.
      PubDate: 2015-02-10T04:38:38.537674-05:
      DOI: 10.1111/jai.12706
       
  • Occurrence of the Erythrean invader Pteragogus pelycus Randall, 1981
           (Teleostei: Labridae) in the eastern Aegean sea
    • Authors: H. H. Yapici; S. Yapici, S. Agdamar, U. Acar
      Abstract: The occurrence of the Erythrean fish Pteragogus pelycus, off Kusadasi Bay, Turkey, eastern Aegean Sea, is here reported for the first time. One specimen was collected and it is now maintained in aquarium. The finding shows that its population is expanding northwards, along the Anatolian coasts of the Aegean Sea, approaching the colonization of the whole south and central basin.
      PubDate: 2015-02-10T04:26:34.20452-05:0
      DOI: 10.1111/jai.12705
       
  • Length‐weight relationships of eleven fish species from the middle
           reaches of Jinsha River, southwest China
    • Authors: L. Pan; W. T. Li, J. J. Xie, Y. F. Que, N. Zhao, Z. Yang, H. Y. Tang, C. Dong, J. L. Qin, Y. Qiao
      Abstract: Length‐weight relationships (LWRs) were determined for eleven endemic fish species [Coreius guichenoti (Sauvage & Dabry de Thiersant, 1874), Glyptothorax sinensis (Regan, 1908), Leptobotia elongata (Bleeker, 1870), Leptobotia taeniops (Sauvage, 1878), Pseudobagrus crassilabris (Günther, 1864), Rhinogobio ventralis (Sauvage & Dabry de Thiersant, 1874), Saurogobio dabryi (Bleeker, 1871), Schizothorax chongi (Fang, 1936), Schizothorax kozlovi (Nikolskii, 1903), Schizothorax prenanti (Tchang, 1930) and Schizothorax wangchiachii (Fang, 1936)] from the middle reaches of the Jinsha River in southwest China. Samples were obtained between May 2004 and July 2013 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 four species (P. crassilabris, S. chongi, S. kozlovi and S. prenanti) were unknown.
      PubDate: 2015-02-06T04:16:27.281477-05:
      DOI: 10.1111/jai.12684
       
  • Age and growth of Boops boops (Linnaeus, 1758) in Izmir Bay, Aegean Sea,
           Turkey
    • Authors: A. Kara; B. Bayhan
      Abstract: The present study was conducted to determine the age relationships in lengths and weights of Boops boops (Linneaus, 1756) in Izmir Bay, central Aegean Sea. A total of 932 specimens (503 females and 429 males) were caught by gillnet, trammel net and a combination thereof on a monthly sampling basis from November 2008 through October 2009. Total length and weight of sampled fish ranged from 11.3 to 27.9 cm and from 12.2 to 261.7 g, with a mean of 19.6 cm and 82.7 g, respectively. Length‐weight relationships for all individuals were described by the parameters a = 0.0050, b = 3.237 and r² = 0.956. The von Bertalanffy growth curve fitted to the lengths‐at‐age provided parameters of L∞ = 29.87 cm k = 0.243 and to = −0.98 for males and L∞ = 30.79 cm, k = 0.239 and to = −0.90 for females. Based on otolith readings, age determinations varied from 1 to 5 years. Maximum age was 5 years in age group 2, with 29.84 and 37.97% for males and females, respectively. The overall 1 : 1.17 sex ratio of males to females was significantly biased toward females (P  0.05), with a value of 1.028 for the entire population. The growth performance index (Φ’) was 2.33 and 2.36 for males and females, respectively. Results were similar to other geographical areas, which suggests that a common fisheries management might be possible.
      PubDate: 2015-02-05T00:47:55.823216-05:
      DOI: 10.1111/jai.12680
       
  • Analysis of length‐weight relationship of sympatric hill stream
           teleosts Barilius bendelisis (Hamilton, 1807) and Barilius vagra
           (Hamilton, 1822) from Garhwal Himalaya, India
    • Authors: J. I. Mir; R. S. Patiyal, N. K. Sharma
      Abstract: The present study describes the length–weight relationships (LWRs) of two important ornamental hill stream fishes, Barilius bendelisis and Barilius vagra (Hamilton), of northern India. A total of 630 specimens were collected from January to June 2011 in a spring‐fed stream in Garhwal Himalaya, India. Information regarding LWRs of these species was not yet available in FishBase.
      PubDate: 2015-01-30T04:12:33.965684-05:
      DOI: 10.1111/jai.12688
       
  • Annual reproductive cycle, spawning periodicity and sexual maturity of
           false scad Caranx rhonchus (Geoffroy Saint‐Hilaire, 1817) (Pisces,
           Carangidae) from the South‐Eastern Mediterranean (Gulf of
           Gabès, Tunisia)
    • Authors: A. Sley; A. Hadj Taeib, O. Jarboui, M. Ghorbel, A. Bouain
      First page: 437
      Abstract: The reproductive biology of Caranx rhonchus (Geoffroy Saint‐Hilaire, 1817) (Pisces, Carangidae) was studied in the Gulf of Gabès (Mediterranean Sea) from June 2004 to May 2006. Of 1313 individuals examined, 668 were females (50.9%) and 645 were males (49.1%). The overall sex ratio did not deviate significantly in favour of females (♀ : ♂ = 1.04 : 1). Monthly changes in the Gonado–Somatic Index (GSI) showed a rapid increase from May to June and an extended very high level from June to September (4.43–3.47% for females and 3.35–2.61% for males), before declining sharply in October (down to 2.02% for females and 0.57% for males). The gametogenesis activity began with a pre‐maturation phase from March to May, followed by a ripe‐spawning phase from June to September. From the last days of July to the end of October, the gonads were in the spent and post‐spawning stages. From November to early May, gonads were in the resting stages. The size at which 50% of the population reached sexual maturity was not significantly different between males and females :  males attained sexual maturity at fork length FL50 = 161.20 ± 0.37 mm (n = 262), whereas females attained maturity at FL50 = 160.70 ± 0.23 mm (n = 296). The age of maturity for both sexes occurred at 2.1 years.
      PubDate: 2015-02-14T00:57:07.450659-05:
      DOI: 10.1111/jai.12675
       
  • Spawning, maturity, growth and movement of Platycephalus fuscus (Cuvier,
           1829) (Platycephalidae): fishery management considerations
    • Authors: C. A. Gray; L. M. Barnes
      First page: 442
      Abstract: The dusky flathead (Platycephalus fuscus) is an important teleost harvested by recreational and commercial fishers throughout its endemic distribution along eastern Australia. This study indicates that the species has an extended spawning period throughout the austral summer, with females in spawning condition occurring in lower estuarine and coastal waters. Total length (L50) and age (A50) at which 50% (±1 SE) of the population was mature was 31.72 (±1.08) cm TL and 1.22 (±0.44) years for males and 56.75 (±0.60) cm TL and 4.55 (±0.13) years for females. The von Bertalanffy growth parameters differed significantly between sexes; females grew faster and attained a greater maximum TL and age than males. The largest female was 98.5 cm TL (7.5 kg), and the oldest 16 years, whereas the largest male was 61.5 cm TL (1.58 kg) and 11 years of age. A tag‐and‐release study identified the exchange of sub‐adult and mature‐sized individuals among estuaries. Determinations of length‐based management regulations for the species are compounded by the large gender‐based differences in growth and length‐at‐maturity. Current minimum legal lengths of 30–40 cm TL protect approximately 3–9% of the female spawning population. Alternative management options, including harvest slot sizes, need to be investigated and tested.
      PubDate: 2015-01-30T04:22:53.737602-05:
      DOI: 10.1111/jai.12703
       
  • Eelgrass, Zostera marina, as essential fish habitat for
           young‐of‐the‐year winter flounder, Pseudopleuronectes
           americanus (Walbaum, 1792) in Maine estuaries
    • Authors: M. A. Lazzari
      First page: 459
      Abstract: Distribution and density by habitat for age‐0, young‐of‐the‐year (YOY) winter flounder, Pseudopleuronectes americanus (Walbaum, 1792), were compared for two Maine estuaries to help define essential fish habitat for this life history stage. Two estuaries (Weskeag River and Penobscot Bay) along Mid‐coast Maine were sampled monthly with daytime 1.0 m2 fixed‐frame throw traps around neap low tide, May–December over two consecutive years (2003–2004). Both eelgrass and adjacent sand/mud (20–60 cm deep) were randomly sampled with equal effort (4–12 samples per month) at two sites in both the Weskeag River and Penobscot Bay. Significantly higher densities of YOY winter flounder (2–9 cm TL) occurred in eelgrass relative to sand/mud. Density increased significantly in both habitats in 2004, and was higher in Penobscot Bay relative to the Weskeag River. YOY densities compared by eelgrass coverage within throw traps were found to be significantly higher in eelgrass that exceeded 30% coverage when compared with adjacent sand/mud areas and eelgrass coverage of 10–20%. YOY occurred in all months sampled (May–December); no density differences existed by month. These results indicate that very shallow (
      PubDate: 2015-03-14T03:42:35.125233-05:
      DOI: 10.1111/jai.12713
       
  • Evaluation of an improved RNA/DNA quantification method in a common carp
           (Cyprinus carpio Linnaeus 1758) larval feeding trial with Artemia, two
           nematodes (Panagrellus redivivus Linnaeus 1758, Panagrolaimus sp. Fuchs
           1930) and dry feed
    • Authors: R. Tillner; T. Assheuer, B. Rennert, A. Trubiroha, C. Clemmesen, S. Wuertz
      First page: 466
      Abstract: The RNA/DNA ratio commonly used as proxy for the nutritional condition of fish larvae is affected by RNA degradation during analysis. For evaluation of two strategies to improve RNA integrity, a three‐week feeding trial was carried out to assess the suitability of two nematode species (fam. Panagrolaimidae) as feed for newly hatched carp larvae (Cyprinus carpio) in comparison to Artemia nauplii (Artemia sp.) and a commercial dry feed. Aiming for an increased reproducibility of RNA/DNA determination, a high‐salt inactivation (RNA later) as well as a targeted approach with a recombinant RNase inhibitor were compared to the classical protocol using lab chip technology. Improved RNA integrity was observed with high‐salt inactivation when compared with a strategy applying a specific RNase inhibitor or the classic protocol. Carp larvae fed Artemia for 2 weeks and then dry feed for 1 week revealed the best overall growth performance as well as survival [83.0 ± 35.2 mg fresh weight (FW), 20.0 ± 2.4 mm total length (TL), 86.6 ± 11.7% survival]. Larvae fed the nematode species Panagrellus redivivus for 1 week and subsequently dry feed for 2 weeks (37.4 ± 29.1 mg FW, 14.7 ± 2.8 mm TL, 76.0 ± 6.0% survival) performed better than larvae fed with dry feed alone (28.2 ± 29.6 mg FW, 14.3 ± 2.9 mm TL, 54.3 ± 14.2% survival) or those receiving Panagrellus for 2 weeks. Between both nematode species, Panagrellus was a better feed with regard to growth performance and survival. RNA/DNA ratios ranged between 0.65 ± 0.27 (8 days post‐hatch) and 1.96 ± 0.63 (22 days post‐hatch) and were in the same treatment order as the other growth parameters. RNA/DNA ratios were significantly correlated with the growth rate, and decreasing RNA/DNA ratios in larger larvae may reflect decreasing growth rates with size rather than decreased nutritional status. Here, an improved RNA/DNA ratio protocol is presented in a feeding trial that reveals the suitability of nematodes as a first feed for common carp larvae.
      PubDate: 2015-03-14T03:54:03.424211-05:
      DOI: 10.1111/jai.12715
       
  • Similarities and differences in 13C and 15N stable isotope ratios in two
           non‐lethal tissue types from shovelnose sturgeon Scaphirhynchus
           platorynchus (Rafinesque, 1820)
    • Authors: R. J. DeVries; H. L. Schramm
      First page: 474
      Abstract: We tested the hypothesis that δ13C and δ15N signatures of pectoral spines would provide measures of δ13C and δ15N similar to those obtained from fin clips for adult shovelnose sturgeon Scaphirhynchus platorynchus. Thirty‐two shovelnose sturgeon (fork length [FL] = 500–724 mm) were sampled from the lower Mississippi River, USA on 23 February 2013. Isotopic relationships between the two tissue types were analyzed using mixed model analysis of covariance. Tissue types differed significantly for both δ13C (P  0.05) effects on δ13C. Fin clip δ13C values were highly variable and weakly correlated (r = 0.16, P = 0.40) with those from pectoral spines. We found a significant FL‐tissue type interaction for δ15N, reflecting increasing δ15N with FL for spines and decreasing δ15N with FL for fin clips. These results indicate that spines are not a substitute for fin clip tissue for measuring δ13C and δ15N for shovelnose sturgeon in the lower Mississippi River, but the two tissues have different turnover rates they may provide complementary information for assessing trophic position at different time scales.
      PubDate: 2015-03-21T09:19:34.788132-05:
      DOI: 10.1111/jai.12708
       
  • Feeding ecology and resource sharing patterns between Stellifer rastrifer
           (Jordan, 1889) and S. brasiliensis (Schultz, 1945) (Perciformes:
           Sciaenidae) along the coasts of Paraná and Santa Catarina, Brazil
    • Authors: F. A. Frehse; M. O. Valduga, M. F. M. Corrêa, P. C. Pinheiro, J. R. S. Vitule
      First page: 479
      Abstract: In this study the diet of Stellifer rastrifer and S. brasiliensis were analysed in order to assess the role of resource partitioning between these congeneric, sympatric and abundant species along the coasts of Paraná (25 °55′28″S; 48 °33′35″W) and Santa Catarina (26 °25′55″S; 48 °34′46″W), in southern Brazil. The stomach contents of 240 S. rastrifer specimens (52–195 mm total length) and 167 S. brasiliensis (60–182 mm total length) collected by trawl boat in March of 2006, were analysed to assess the influence of sites, day and night periods as well as the size class in their diet composition. Although crustaceans have been the main resources of both species, S. rastrifer consumed pelagic and epibenthic items, whereas S. brasiliensis also used benthic resources. Results of permanova analysis provided significant evidence for food resource partitioning and confirm the role of feeding changes in the function of morphology (species, P = 0.001), behaviour (day and night, P = 0.024), and ontogeny (size classes, P = 0.001), strategies to reduce competition and to maintain the coexistence of these syntopic species.
      PubDate: 2015-03-25T04:04:01.057972-05:
      DOI: 10.1111/jai.12768
       
  • Saddleback syndrome in yellowfin bream [Acanthopagrus australis
           (Günther, 1859)] in Moreton Bay, Australia: its form, occurrence,
           association with other abnormalities and cause
    • Authors: B.R. Pollock
      First page: 487
      Abstract: The aim of this study was to determine if saddleback syndrome (SBS) in a wild population of yellowfin bream (Acanthopagrus australis) was the result of a developmental defect or caused by physical injury. Information was collected in 2012 on the incidence of SBS and other abnormalities in this species in Moreton Bay, Australia. Abnormalities in adult fish (>250 mm Total Length, TL) with SBS (n = 47) were compared with those without SBS (n = 30). A sample of juvenile fish (n = 404) was checked for the presence of SBS. The results show that scale loss, scale pattern misalignment, lateral line fracture and pectoral fin abnormality were closely associated with SBS. SBS was uncommon (70 mm TL). The reduction in the incidence of SBS from approximately 12% in the larger juveniles to 5% in adults is evidence of mortality associated with SBS.
      PubDate: 2015-04-24T06:25:11.042504-05:
      DOI: 10.1111/jai.12437
       
  • Age and growth of Arno goby, Padogobius nigricans (Canestrini, 1867), in
           the Aggia River (Umbria, Central Italy)
    • Authors: L. Pompei; D. Giannetto, M. Lorenzoni
      First page: 494
      Abstract: In this study, data of Padogobius nigricans, a species endemic to Central Italy, were used to assess the age, growth parameters and condition of this species. Length–weight relationships are also provided and represent the first available reference in the literature for the Arno goby. Data were collected in the Aggia River, a tributary of the Tiber River, by monthly samplings. A total of 780 specimens ranging in size from 1.5 to 9.2 cm were analyzed. Age was assessed by examination of scales, with the maximum age of 4+  years observed in males and 3+ in females. Previous growth was determined by back‐calculation of scale measurements. The von Bertalanffy growth parameters were estimated separately for sexes (males: L∞ = 9.759 cm, k = 0.505, t0 = 0.025, Ф′ = 1.682; females: L∞ = 8.989, k = 0.458, t0 = 0.028; Ф′ = 1.599). Evidence of growth differences between sexes was found, with males living longer and reaching larger sizes. Using the relative condition factor, condition was lower in females than in males, especially during the breeding period due to the strain of high reproduction. Competition with the congeneric P. bonelli, a species endemic to Northern Italy that was introduced in Central Italy, seems not to have been disadvantaged directly by the growth of P. nigricans in the Aggia River, since no selective size‐mortality occurred in the population.
      PubDate: 2015-02-02T23:58:13.033347-05:
      DOI: 10.1111/jai.12689
       
  • Demogenetic structure of brown trout Salmo trutta Linnaeus, 1758
           populations in mountain headwaters: implications for conservation
           management
    • Authors: L. Závorka; P. Horký, J. Kohout, L. Kalous, O. Slavík
      First page: 501
      Abstract: A demogenetic analysis based on 7 years of observation (2005–2011) was conducted to examine the population structure of brown trout Salmo trutta in pristine dendritic headwaters. The value of genetic divergence (FST) among sampling units ranged from −0.03 to 0.16. Demographic synchrony was low or moderate, and the average correlation coefficient of population growth between sampling units (r¯) ranged from 0.28 to 0.66. No isolation by distance was observed, but genetic divergence was negatively correlated with demographic synchrony among sampling units. Variance in the population growth rate (i.e. local extinction probability) increased with distance from the mainstream and from other sampling units. In contradiction with the usual model of stream‐dwelling salmonids, the upstream sections of headwaters holds only ephemeral subpopulations, whereas the mainstream played a role in the source area of the metapopulation. These findings stress the importance of the mainstream in management conservation for brown trout in low productive mountain headwaters.
      PubDate: 2015-03-19T06:34:04.962107-05:
      DOI: 10.1111/jai.12749
       
  • Early development and allometric growth patterns in ide Leuciscus idus
           (Linnaeus 1758)
    • Authors: K. Kupren; D. Żarski, D. Kucharczyk
      First page: 509
      Abstract: Allometric growth and ontogeny were studied in ide Leuciscus idus (L.) reared in laboratory conditions from 0 to 30 days post hatching (DPH), to define important steps in the species’ early life history. Based on the external morphology, eleven different stages during the early development of ide were identified (ES9a – JS1a; ES – embryonic stage, JS – juvenile stage). After a short period of rest, hatched individuals were visual feeders with a pelagic life. Organogenesis and allometric changes indicated that development priorities concerned feeding efficiency, respiration efficiency and locomotion performances. Also concluded was that the gradual changes observed in body proportions (which occurred across a wide range of body lengths) reflect the absence of abrupt changes in the behaviour and habitat and may also be considered as a gradual adaptation to life in flowing water.
      PubDate: 2015-03-14T03:54:20.527839-05:
      DOI: 10.1111/jai.12747
       
  • Effect of dietary fish oil replacement with palm oil on growth
           performance, hematology and liver anti‐oxidative enzymes of juvenile
           Japanese flounder Paralichthys olivaceus (Temminck & Schlegel, 1846)
    • Authors: Y. Z. Han; Z. Q. Jiang, T. J. Ren, S. Koshio, J. Gao, C. F. Komilus, B. Q. Jiang
      First page: 518
      Abstract: A 60‐day feeding trial was conducted to evaluate the effects of dietary palm oil supplements on growth performances, hematology, liver anti‐oxidative enzymes and air exposure resistance of Japanese flounder, Paralichthys olivaceus (initial weights 2.56 ± 0.01 g). Five diets were tested wherein the dietary fish oil was replaced by palm oil at: 0% (Control), 20% (20%), 40% (40%), 50% (50%) and 60% (60%). After the feeding trial, the 20% dietary palm oil was shown to provide similar growth rates and feed efficiency with no negative effects compared to the control group (P > 0.05). Significantly lower growth rates and feed utilization were found in fish fed higher than 40% palm oil in the diet (P  0.05). According to the present results, palm oil is a valuable lipid source substitute in Japanese flounder diets; around 20–40% fish oil can be replaced with palm oil with no negative effects.
      PubDate: 2015-04-01T05:37:03.826599-05:
      DOI: 10.1111/jai.12776
       
  • Improving the performance of a grid used in Norway lobster fisheries
    • Authors: N. Madsen; P. Lewy, J. Feekings, L. A. Krag, R. Frandsen, K. Hansen
      First page: 525
      PubDate: 2015-02-05T00:58:06.968986-05:
      DOI: 10.1111/jai.12693
       
  • Dynamics of biannual spawning behavior in rainbow trout Oncorhynchus
           mykiss (Walbaum, 1792) from southern Chile
    • Authors: N. Colihueque; F. Estay, C. Araneda
      First page: 529
      PubDate: 2015-02-05T01:00:07.25694-05:0
      DOI: 10.1111/jai.12697
       
  • Concurrence of inverted‐papilloma and papilloma in a gold spot pleco
           (Pterygoplichthys joselimaianus Weber, 1991)
    • Authors: H. Rahmati‐holasoo; S. Shokrpoor, H. A. Ebrahimzadeh Mousavi, M. Ardeshiri
      First page: 533
      PubDate: 2015-02-03T00:31:17.139183-05:
      DOI: 10.1111/jai.12701
       
  • Additional record of the Lessepsian Apogon queketti Gilchrist, 1903
           (Osteichthyes: Apogonidae) from the Aegean Sea (Gökova Bay, Turkey)
    • Authors: O. Akyol; V. Ünal
      First page: 536
      PubDate: 2015-02-05T01:01:34.876847-05:
      DOI: 10.1111/jai.12702
       
  • Range extension of Lutjanus inermis (Peters, 1896) (Perciformes:
           Lutjanidae) to the central region of the Gulf of California, Mexico
    • Authors: F. J. Fernández‐Rivera Melo; H. Reyes‐Bonilla, L. Campos‐Dávila, E. F. Balart
      First page: 541
      PubDate: 2015-03-23T02:04:32.439448-05:
      DOI: 10.1111/jai.12750
       
  • Relationships between fish size and otolith measurements for 33 fish
           species caught by bottom trawl in Haizhou Bay, China
    • Authors: X.‐X. Zan; C. Zhang, B.‐D. Xu, C.‐L. Zhang
      First page: 544
      PubDate: 2015-03-14T03:53:47.016875-05:
      DOI: 10.1111/jai.12751
       
  • Length‐weight relationships for 22 neotropical freshwater fishes
           from a subtropical river basin
    • Authors: E. L. Silveira; A. M. Vaz‐dos‐Santos
      First page: 552
      Abstract: This paper presents length‐weight relationships (LWR) for 22 species from the Pitangui River Basin, Brazil. For six of these species these are the first LWR records; for nine other species these are the first LWRs recorded in FishBase.
      PubDate: 2015-02-03T00:28:50.755958-05:
      DOI: 10.1111/jai.12699
       
  • Length–weight relationships of 21 fishes from the Xiangjiang River,
           China
    • Authors: J. Lei; F. Chen, J. Tao, W. Xiong, Y. F. Chen
      First page: 555
      Abstract: This paper provides the length–weight relationships for 21 fish species belonging to four families and 19 genera from the Xiangjiang River, a tributary of the middle Yangtze River in China. Among them, the length–weight relationships for 14 fishes are first‐time reports for FishBase, and new maximum total lengths of 13 fishes are also reported.
      PubDate: 2015-02-03T00:27:55.722035-05:
      DOI: 10.1111/jai.12700
       
  • Length–weight relationships of 33 fish species from New Zealand
    • Authors: R. Crec'hriou; V. Zintzen, L. Moore, C. D. Roberts
      First page: 558
      Abstract: Length–weight relationships are presented for 33 fish species from New Zealand. The parameters a and b of the equation W = aLb were estimated. Parameter b ranged from 2.51 (Pseudocaranx dentex) to 3.51 (Alepocephalus antipodianus) with a mean of 3.12 ± 0.24. Most of these estimates (90.9%) were between 2.8 and 3.4. Maximum lengths and depths of catch are updated for nine species.
      PubDate: 2015-03-06T23:55:25.805427-05:
      DOI: 10.1111/jai.12709
       
  • Length‐weight relationship of Cobitis elongatoides Heckel &
           Kner, 1858 from a pure diploid population in the Nová
           Říše Reservoir, Czech Republic
    • Authors: K. Halačka; L. Pekárik
      First page: 562
      Abstract: This study describes the length‐weight relationship of pure diploid individuals of Cobitis elongatoides from the Nová Říše Reservoir, Czech Republic. The resultant length‐weight relationship was highly dependent on the individuals included, thus the length‐weight relationship of males, small females and large females differed significantly. Furthermore, these relationships varied between sampling seasons. Further studies are planned to test for differences between different ploidy levels.
      PubDate: 2015-03-14T03:41:27.950607-05:
      DOI: 10.1111/jai.12710
       
  • Length‐weight relationships in some populations and species of
           Iranian loaches
    • Authors: H. Nowferesti; S. Asgardun, P. Zare, A. Norooz Rajabi, M. H. Armand, R. Ghorbani
      First page: 565
      Abstract: Length‐weight relationships were estimated for eight species of Iranian loaches. The L‐W parameters for three of the species are given for the first time.
      PubDate: 2015-03-14T03:41:13.398727-05:
      DOI: 10.1111/jai.12711
       
  • Length‐weight relationships of 58 fish species in French Guiana
           streams
    • Authors: L. Allard; A. Toussaint, R. Vigouroux, S. Brosse
      First page: 567
      Abstract: Length‐weight relationship parameters of the form W = aLb are presented for 58 fish species representing 36 genus and 19 families captured in streams of French Guiana. LWRs for 53 of the species are estimated for the first time.
      PubDate: 2015-03-14T03:42:18.844735-05:
      DOI: 10.1111/jai.12712
       
  • Length‐weight relationship and reproductive parameters of Botia
           dario (Hamilton, 1822) in Assam, India
    • Authors: M. K. Das; S. Bordoloi
      First page: 571
      Abstract: The length‐weight relationships, spawning season, sex ratio, size at first maturity and fecundity of Botia dario (Hamilton, 1822), also known as the Bengal loach, were analyzed based on 556 specimens collected from the wetlands of Majuli Island, Assam between June 2012 and May 2013. The sex ratio (M : F) was 1 : 0.68, differing significantly (P 
      PubDate: 2015-03-23T02:01:13.258032-05:
      DOI: 10.1111/jai.12745
       
  • Length‐weight and length‐length relationships of two tropical
           fish Secutor megalolepis (Mochizuki & Hayashi, 1989) and Rhabdamia
           gracilis (Bleeker, 1856) from Sabah, Malaysia
    • Authors: M. A. M. Siddique; A. Arshad, S. M. N. Amin
      First page: 574
      Abstract: Length‐weight relationships (LWRs) and length‐length relationships (LLRs) for two tropical fish species from Marudu Bay, Sabah were studied. Specimens were caught with the traditional ‘Bagan net’ fishing gear from October 2012 to September 2013, using the light trap method. The maximum total length for Rhabdamia gracilis (7.4 cm) reported in this study is a new record for this species. No information regarding length‐weight relationships was reported previously in FishBase for either Secutor megalolepis or Rhabdamia gracilis.
      PubDate: 2015-03-14T03:53:15.457097-05:
      DOI: 10.1111/jai.12752
       
  • Length‐weight relationships for 18 freshwater fish species from the
           Nakdong River in South Korea
    • Authors: J.‐W. Lee; J.‐D. Yoon, J.‐H. Kim, S.‐H. Park, S.‐H. Baek, J.‐J. Yu, M.‐H. Jang, J.‐I. Min
      First page: 576
      Abstract: Length‐weight relationships of 18 freshwater fish species from the Nakdong River in South Korea are presented. Length‐weight relationship data for 10 of these species were not available previously.
      PubDate: 2015-03-21T09:19:36.115592-05:
      DOI: 10.1111/jai.12757
       
  • Length–weight relationships for four Aphanius species of Iran
           (Teleostei: Cyprinodontidae)
    • Authors: H. R. Esmaeili; M. Masoudi, G. Sayyadzadeh, H. R. Mehraban, Z. Gholami, A. Teimori
      First page: 578
      Abstract: Length–weight parameters are presented for four endemic tooth‐carps of the genus Aphanius from Iran.
      PubDate: 2015-03-23T02:19:36.38769-05:0
      DOI: 10.1111/jai.12758
       
  • Length–weight relationship of 37 fish species from the Taquari River
           (Paranapanema Basin, Brazil)
    • Authors: A. B. Nobile; E. M. Brambilla, F. P. Lima, D. Freitas‐Souza, I. L. Bayona‐Perez, E. D. Carvalho
      First page: 580
      Abstract: This work describes the length–weight relationship (LWR) of 37 fish species from the Taquari River, one of the tributaries of the Jurumirim Reservoir in the high Paranapanema Basin, São Paulo, Brazil. Information was not yet available in FishBase on LWRs of 22 of the fish species and maximum weights (Wt) of 24 of the fish species. New maximum standard lengths are presented for nine species as well as weights for two fish species.
      PubDate: 2015-03-17T00:18:09.116812-05:
      DOI: 10.1111/jai.12761
       
  • Length–weight relationships of four Cyprinid species in India
    • Authors: S. P. Das; S. Swain, D. Bej, P. Jayasankar, J. K. Jena, P. Das
      First page: 583
      Abstract: Length–weight relationships are reported for four Indian carps. The length–weight relationship was W = 0.01123L3.355 for Cirrhinus mrigala, W = 0.07354L3.299 for Catla catla, W = 0.04066L3.313 for Labeo rohita and W = 0.11489L2.732 for Labeo fimbriatus. LWR estimates for C. mrigala and L. fimbriatus had not been previously reported in FishBase.
      PubDate: 2015-03-14T03:53:30.25306-05:0
      DOI: 10.1111/jai.12762
       
  • Length–weight relationships of six fish species from an Indus basin
           tributary in the Poonch region of Jammu and Kashmir, India
    • Authors: N. K. Sharma; J. I. Mir, N. N. Pandey, R. Singh, A. Bashir, M. S. Akhtar
      First page: 585
      Abstract: Length–weight relationships are described for six fish species belonging to two families from the Poonch River, a tributary of the Jhelum River (Tributary of Indus Basin), India. Length–weight relationships for the six species were unknown to FishBase, and new maximum lengths are recorded for five of the species. These results will be useful for fishery research, management and conservation of the Indus Basin.
      PubDate: 2015-03-21T09:19:53.660227-05:
      DOI: 10.1111/jai.12764
       
  • 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
       
  • A checklist of the protozoan and metazoan parasites of European eel
           (Anguilla anguilla): checklist of Anguilla anguilla parasites
    • Authors: E. Jakob; T. Walter, R. Hanel
      Abstract: A comprehensive literature review on prevalence and distribution of parasites of the European eel (Anguilla anguilla) in European waters was conducted to set a baseline for future trend analyses and biodiversity considerations. The resulting checklist compiled from peer reviewed journals as well as grey literature including scientific reports, conference contributions, PhD theses and own survey data includes all protozoan and metazoan parasites of the European eel from freshwater, brackish and marine habitats. Parasites are arranged according to phylum and family. Species within families are listed alphabetically. Infected host organs, recorded habitats, localities, countries and literature citations are provided for each species. A total of 161 parasite species/taxa from 30 countries are listed. With the trypanorhynch cestode Tentacularia coryphaenae a new host record could be documented. Furthermore, three new locality records of parasitic nematodes could be added based on own survey data: Anisakis simplex from an eel caught in the Baltic Sea, Eustrongylides mergorum for German freshwaters, and Goezia anguillae from the Tagus estuary in Portugal. Special consideration was given to the distribution of the swimbladder nematode Anguillcoloides (Anguillicola) crassus. A map and table of first reported records of this neozoan parasite species for 25 countries as well as a survey map indicating all published localities documented in the checklist are provided.
      PubDate: 2009-11-25T00:00:00-05:00
      DOI: 10.1111/j.1439-0426.2009.01345.x
       
 
 
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