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Journal Cover Journal of Applied Ichthyology
   [8 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  [1602 journals]   [SJR: 0.427]   [H-I: 33]
  • The silver-cheeked toadfish Lagocephalus sceleratus (Gmelin, 1789) reaches
           Italian waters
    • Authors: E. Azzurro; L. Castriota, M. Falautano, F. Giardina, F. Andaloro
      Pages: n/a - n/a
      PubDate: 2014-06-24T09:52:22.716653-05:
      DOI: 10.1111/jai.12471
  • Fistularia commersonii Rüppell, 1838 in the Mediterranean Sea:
           filling the Libyan gap
    • Authors: H. Elbarassi; A. E. Bashir, E. Azzurro
      Pages: n/a - n/a
      PubDate: 2014-06-23T08:40:15.674341-05:
      DOI: 10.1111/jai.12470
  • Invasion characteristics of Pterygoplichthys ambrosettii (Holmberg, 1893)
           in the lower Paranapanema River, Brazil
    • Authors: D. Azevedo Zoccal Garcia; F. Simões de Almeida, Â. Teresa Silva e Souza, J. Robert Britton, M. Luís Orsi
      Pages: n/a - n/a
      PubDate: 2014-06-23T08:39:28.718207-05:
      DOI: 10.1111/jai.12468
  • Length–weight relationships for four small fish species caught in
           wetlands of central Yangtze River, China
    • Authors: W. Xiong; J. Tao, D. C. Zhang, C. L. Liu, D. K. He, Y. Chen
      Pages: n/a - n/a
      Abstract: Length–weight relationships for four native species (Oryzias latipes Temminck & Schlegel, 1846; Rhodeus ocellatus Kner, 1866; Rhinogobius giurinus Rutter, 1897; and Micropercops swinhonis Günther, 1873) were determined. The fish were collected from the wetlands of the central Yangtze River, in Wuhan, Hubei Province, China. Samples were obtained from May 2012 to January 2013. Length–weight relationships for O. latipes were determined for the first time.
      PubDate: 2014-06-23T08:31:32.028436-05:
      DOI: 10.1111/jai.12484
  • Comparative analysis of intermuscular bones in three strains of common
    • Authors: D.-C. Cao; Y.-Y. Kuang, X.-H. Zheng, G.-X. Tong, C.-T. Li, X.-W. Sun
      Pages: n/a - n/a
      Abstract: The objective was to document the variations in the intermuscular bone counts among three carp strains: mirror carp, hybrid carp [Boshi carp (Cyprinus pellegrini) × Heilongjiang carp (Cyprinus carpio)], and a cold-resistant strain of Hebao carp. The intermuscular bone counts, lengths, and weights were obtained from 146 fish; the bone count ranged from 55 to 110 (mean 92.85) among the three strains. Mirror carp had the lowest number of intermuscular bones and a higher coefficient of variation in counts relative to the other two species. There was no relationship between the intermuscular bone counts to standard length or body length. Similarly, there was no difference in the intermuscular bone count or shape between the left and right sides of the body. However, the count was significantly higher (P 
      PubDate: 2014-06-23T08:30:39.174171-05:
      DOI: 10.1111/jai.12483
  • Length-weight relationships of four snowtrout species from the Kashmir
           Valley in India
    • Authors: F. A. Mir; J. I. Mir, R. Singh Patiyal, P. Kumar
      Pages: n/a - n/a
      Abstract: Length–weight relationships (LWR) are presented for one species of the genus Schizopyge [S. curvifrons (Heckel, 1838)] and three species of the genus Schizothorax [S. esocinus (Heckel, 1838), S. labiatus (McClelland, 1842) and S. plagiostomus (Heckel, 1838)] from different water bodies of the Kashmir Valley, India. A total of 774 specimens were sampled and measured from January to November 2011. No information regarding LWRs of these species was available in FishBase.
      PubDate: 2014-06-20T06:31:24.097812-05:
      DOI: 10.1111/jai.12482
  • Reproduction, growth and mortality of the exploited sillaginid, Sillago
           ciliata Cuvier, 1829
    • Authors: F. A. Ochwada-Doyle; J. Stocks, L. Barnes, C. A. Gray
      Pages: n/a - n/a
      Abstract: The goal of this study was to examine the age and size composition, growth, reproductive biology and mortality of Sillago ciliata Cuvier, 1829 in one of the largest estuarine commercial fisheries in south-eastern Australia. The study also aimed to present a qualitative comparison of latitudinal variations in some of these characteristics along the eastern Australian coastline. The sampled population contained fish aged up to 10 years with a maximum size of 39.2 cm fork length (LF), and was dominated by 1–5 year olds. Sexual divergence in both the age and size structure of the population was recorded. Female S. ciliata grew slightly faster and attained a greater maximum size (L∞ = 33.79 cm LF, k = 0.50 year−1 and t0 = −0.57 years) than males (L∞ = 29.73 cm LF, k = 0.49 year−1 and t0 = −0.67 years). Females also matured at a significantly larger size (19.13 cm) and older age (1.63 years) than males (size: 17.07 cm, age: 1.10 years). Reproductive activity was highest between September and March. There were no differences between males and females in terms of mortality rate; the estimated total population, natural and fishing mortality rates were Z = 0.64, M = 0.42 and F = 0.22, respectively. Although these mortality rates suggest that S. ciliata in the Clarence River are relatively resilient to current rates of exploitation, regular monitoring of their commercial and recreational catch as well as their population structure is recommended in order to maintain sustainable fisheries. Potential latitudinal shifts in the spawning period, age structure and growth of S. ciliata along eastern Australia were also revealed.
      PubDate: 2014-06-20T06:31:22.463756-05:
      DOI: 10.1111/jai.12478
  • Length-weight relationships of fishes in the Wu Jiao nature reserve and
           adjacent areas, China
    • Authors: Y. Zeng; Y.-Y. Huang, Y.-B. Chen, Z.-J. Li
      Pages: n/a - n/a
      Abstract: The length-weight relationships LWRs) (W = aLb) of four fish species caught in 2010–2012 from the Wujiao Nature Reserve and adjacent areas are reported. LWRs of these species are documented for the first time.
      PubDate: 2014-06-20T06:31:20.273872-05:
      DOI: 10.1111/jai.12461
  • First record of the red-spotted wrasse Lappanella fasciata (Cocco, 1833)
           (Labridae) in the Aegean Sea
    • Authors: A. C. Keskin; H. Dereli, E. Irmak
      Pages: n/a - n/a
      PubDate: 2014-06-20T06:30:49.186987-05:
      DOI: 10.1111/jai.12463
  • Length-weight relationships of 11 fish species from the upper Jinsha
           River, China
    • Authors: P.-C. Lin; Z.-G. Miao, X. Gao, H.-Z. Liu
      Pages: n/a - n/a
      Abstract: Length-weight relationships (LWR) are described for eleven indigenous fishes from the upper Jinsha River, which is the upper stretch of the Yangtze River, China. This is the first record of length-weight relationships for ten of these species in FishBase and new maximum lengths are recorded for seven species.
      PubDate: 2014-06-20T06:25:48.268424-05:
      DOI: 10.1111/jai.12466
  • Record of a newly introduced fish, red-bellied pacu Piaractus brachypomus
           (Cuvier, 1818) (Characiformes, Serrasalmidae), in a tropical wetland
           system, India
    • Authors: K. Roshni; C. R. Renjithkumar, B. M. Kurup
      Pages: n/a - n/a
      PubDate: 2014-06-20T06:25:46.848232-05:
      DOI: 10.1111/jai.12462
  • Ageing Belanger's croaker, Johnius belangerii (Cuvier, 1830), based on
           otolith shape analysis
    • Authors: Z. J. Ye; C. Zhang, S. K. Panhwar, Z. G. Li, R. Wan
      Pages: n/a - n/a
      Abstract: The use of morphological characters and otolith weight as predictors of fish age has proven to be an efficient, objective and precise method, but studies were heretofore focused primarily on fast-growing fish species. In the present study, Belanger's croaker, Johnius belangerii (Cuvier, 1830), is presented as a model species for slow-growing fish where it is hypothesized that age has a significant effect on the otolith shape, and that the otolith weight has the potential to predict individual fish age as an alternative and objective method. Discriminant function analysis (DFA) of shape variables and cross-validation were applied to a total of 359 sagittal otoliths in the age groups 0, 1 and 2. The shape variables demonstrated 64.1% correct age classification, and a 93.5% correct age classification with the inclusion of otolith weight in the discriminant function. Results show that a combination of shape variables and otolith weight work well in age determination of Belanger's croaker, and demonstrate its application potential for sciaenids that are distributed throughout the coastal waters of China.
      PubDate: 2014-06-19T02:10:25.225929-05:
      DOI: 10.1111/jai.12451
  • First record of the redbelly tilapia, (Tilapia zillii Gervais, 1848), in
    • Authors: R. Roozbhfar; M. Dehestani-Esfandabadi, S. Roozbehfar
      Pages: n/a - n/a
      PubDate: 2014-06-17T01:47:40.234531-05:
      DOI: 10.1111/jai.12469
  • Length–weight relationships of six freshwater cyprinid fishes of
    • Authors: H. Nowferesti; S. Asgardun, P. Zare
      Pages: n/a - n/a
      Abstract: Length–weight relationships were estimated for six cyprinid species of Iran. One of these species is endemic to Iran and the L–W parameters for three of the species are given for the first time.
      PubDate: 2014-06-14T02:31:44.38821-05:0
      DOI: 10.1111/jai.12373
  • Bio-economic analysis of the Mar Menor (Murcia, SE Spain) small-scale
           lagoon fishery
    • Authors: F. Maynou; P. Martínez-Baños, M. Demestre, R. Franquesa
      Pages: n/a - n/a
      Abstract: An integrated fisheries management tool based on a bio-economic model was applied to the demersal fishery in the Mar Menor coastal lagoon in SE Spain, with the objective of exploring solutions to ensure the sustainability of this activity. The hypothesis is that excess harvesting in recent years by fishers trying to offset growing production costs has led to the inefficient use of lagoon fishery resources. The authors established the basic bio-economic conditions of the fishery in 2012 by means of field sampling and personal interviews with producers, and analyzed the response of several biological and economic indicators (target species biomass and yield, fleet profits) to a management scenario based on limiting the fishing season of one of the main types of fishing gear (fish traps, locally known as ‘paranzas’). Results show that a reduction in fishing mortality of two overexploited species (Sparus aurata and Lithognathus mormyrus) will help recover the biomass of these stocks by more than 40% as well as increase the economic value of the fishery, with profits increasing by 17% over a 4-year period.
      PubDate: 2014-06-09T05:47:44.083141-05:
      DOI: 10.1111/jai.12460
  • Influence of Tribulus terrestris extract on the survival and
           histopathology of Oreochromis mossambicus (Peters, 1852) fry before and
           after Streptococcus iniae infection
    • Authors: S. Yilmaz; S. Ergün, H. Kaya, M. Gürkan
      Pages: n/a - n/a
      Abstract: The aim of this study was to determine the effects of Tribulus terrestris extract (TT) on growth performance, disease resistance and histopathological changes in intestine and liver tissues of Oreochromis mossambicus (Peters, 1852) first-feeding fry before and after exposure to Streptococcus iniae. Five isonitrogenous and isocaloric diets were formulated to contain 0 (control), 200, 400, 600, and 800 mg kg−1 TT. After feeding for 45 days, fish were infected with S. iniae and mortalities recorded. Final weight, weight gain and SGR of tilapia fry fed the 400 mg kg−1 TT diet were significantly greater than that of control diet. In the challenge experiment, the best survival rate was obtained with 400 mg kg−1 TT supplementation. Infection by S. iniae appeared to have a negative effect on histopathological findings and outcome than did TT-800 used alone. However, administration of TT (200 or 400 mg extract kg−1) resulted in overall improvement in the intestine and liver histopathology, emphasizing the protective potential of TT. The present study suggests the protective potential of TT in alleviating intestinal and hepatic damage that can occur after a S. iniae infection. It was concluded that 400 mg kg−1 TT can enhance growth and disease resistance during first–feeding of O. mossambicus fry. This suggests that TT may be an alternative to antibiotics in controlling streptococcal disease in tilapia culture.
      PubDate: 2014-06-09T05:25:28.800465-05:
      DOI: 10.1111/jai.12458
  • Effect of dietary supplementation of mannan oligosaccharide on growth
           performance and salinity tolerance in kutum, Rutilus kutum (Kamensky,
           1901) fry
    • Authors: E. Ahmadifar; R. Akrami, M. Razeghi Mansour, A. Keramat Amirkolaie
      Pages: n/a - n/a
      PubDate: 2014-06-09T05:24:57.117084-05:
      DOI: 10.1111/jai.12452
  • Geographic variation of body morphology of the Atlantic bluefin tuna,
           (Thunnus thynnus, Linnaeus, 1758)
    • Authors: P. Addis; M. Secci, M. Pischedda, U. Laconcha, H. Arrizabalaga
      Pages: n/a - n/a
      Abstract: Geometric morphometric methods were used to explore body shape morphology in 260 Atlantic bluefin tuna, Thunnus thynnus, collected in Sardinia (Western Mediterranean) during the breeding phase and in the Bay of Biscay (North Eastern Atlantic) during the feeding phase. The shape of each specimen was captured by high resolution digital images and recording the 2-D coordinates of seven morphological landmarks. A general procruste analysis (GPA) was applied in order to eliminate any morphological variations resulting from size, position or orientation of specimens. A thin plate-spline (TPS) method was then used to provide a graphical representation of the shape conformation between two sets of data. Results of the regression model between the direct and indirect measurements accounted for a R2 = 0.98. The Principal Components Analysis shows differences linked to the two sampling areas, accounting for 37% and 19.97% of the body shape variation in the first (PC1) and second (PC2) principal component, respectively. Specifically, the deformation grid projection highlights the major differences regarding the anterior-ventral part of the body (landmark 5-6-7). These differences might not necessarily be linked to an actual population substructure. Instead, it was hypothesized that such body shape differences were due to the diverse life phases during which specimens were collected, since the reproductive specimens show a ‘pot-bellied’ shape, which was larger than for the feeding specimens that showed a ‘slimmer’ shape. Analyses of likely sexual dimorphism conducted on Sardinian specimens did not reveal any significant differences; whereas body shape differences related to the pre- and post-reproductive sizes were detected.
      PubDate: 2014-06-09T05:24:52.777162-05:
      DOI: 10.1111/jai.12453
  • Interspecific habitat associations of juvenile salmonids in Lake Ontario
           tributaries: implications for Atlantic salmon restoration
    • Authors: J. H. Johnson; M. A. Chalupnicki
      Abstract: Diel variation in habitat use of subyearling Chinook salmon (Oncorhynchus tshawytscha), subyearling coho salmon (O. kisutch), yearling steelhead (O. mykiss), and yearling Atlantic salmon (Salmo salar) was examined during the spring in two tributaries of Lake Ontario. A total of 1318 habitat observations were made on juvenile salmonids including 367 on steelhead, 351 on Chinook salmon, 333 on Atlantic salmon, and 261 on coho salmon. Steelhead exhibited the most diel variation in habitat use and Chinook the least. Juvenile salmonids were generally associated with more cover and larger substrate during the day in both streams. Interspecific differences in habitat use in both streams occurred with Atlantic salmon (fast velocities) and coho salmon (pools) using the least similar habitat. Chinook salmon and Atlantic salmon used similar habitat in both streams. These findings should help guide future management actions specific to habitat protection and restoration of Atlantic salmon in Lake Ontario tributaries.
      PubDate: 2014-06-02T23:50:25.947034-05:
      DOI: 10.1111/jai.12456
  • Enumeration of gut associated extracellular enzyme‐producing yeasts
           in some freshwater fishes
    • Authors: S. Banerjee; K. Ghosh
      Abstract: Extracellular enzyme‐producing yeasts might be involved in the supplementation of enzymes within the gastrointestinal tract of fish. The present study was intended to detect yeasts in the intestine of three Indian major carps (Labeo rohita, Catla catla, Cirrhinus mrigala), three exotic carps (Hypophthalmichthys molitrix, Ctenopharyngodon idella, Cyprinus carpio), as well as Nile tilapia (Oreochromis niloticus), and to identify the most promising extracellular enzyme‐producing (e.g. amylase, protease, lipase, cellulase, xylanase and phytase) yeast strains by 18S rDNA sequence analysis. Selected for qualitative enzyme assay were 121 yeast strains, from which 28 were further studied for quantitative enzyme assay. The strain CMH6A isolated from C. mrigala exhibited the best extracellular enzyme activities except for amylase and cellulase. The strain ONF19B isolated from O. niloticus was noted as the best extracellular enzyme producer among the strains that produced all of the extracellular enzymes studied. Sequencing of the 18S rDNA fragment followed by nucleotide blast in the National Centre for Biotechnology Information (NCBI) GenBank revealed that strains CMH6A and ONF19B were similar to Pichia kudriavzevii (Accession no. KF479403) and Candida rugosa (Accession no. KF479404), respectively. The test of antagonism (in vitro) revealed that the isolated yeasts could not affect the growth of the autochthonous gut bacteria. This might indicate likely co‐existence of autochthonous yeasts and bacteria in the fish gut. Further research is necessary to explore the possibilities of utilizing the extracellular enzyme‐producing yeasts detected in the present study for commercial aquaculture.
      PubDate: 2014-06-02T23:37:42.939375-05:
      DOI: 10.1111/jai.12457
  • Issue Information
    • PubDate: 2014-04-23T06:04:18.963969-05:
      DOI: 10.1111/jai.12440
  • Effects of human chorionic gonadotropin (hCG) and handling stress on
           spermiation of silver perch Leiopotherapon plumbeus (Kner, 1864)
    • Authors: P. J. T. Denusta; E. G. T. Jesus-Ayson, M. A. Laron, L. M. B. Garcia
      First page: 448
      Abstract: This study determined the effect of human chorionic gonadotropin (hCG) and handling stress on the spermiation and milt response of silver perch Leiopotherapon plumbeus based on the measurement of spermatocrit, sperm density, and milt production. Compared to saline‐injected fish, the mean spermatocrit (or packed sperm) of hCG‐treated fish was significantly lower at 18 h (47.9%) and 30 h (40.2%) post‐injection while mean sperm density was significantly lower at 30 h post‐injection (3.6 × 106 cells μl−1) but not at 18 h. At 18 h (1.8 μl g‐BW−1) and 30 h (2.5 μl g‐BW−1) post‐injection, mean milt production of hCG‐treated fish was significantly higher than in the saline group. Milt consistency was also thinner in the hCG‐treated group. Mean sperm density of handled fish (18.0 × 106 cells μl−1) was significantly lower than control fish (23.4 × 106 cells μl−1). However, mean sperm density of handled plus saline‐injected (16.2 × 106 cells μl−1) and handled plus hCG‐treated fish (8.4 × 106 cells μl−1) was significantly lower than in the control goup. Having thicker milt consistency, mean spermatocrit and milt production of handled (77.5%; 1.1 μl g‐BW−1, respectively) and handled plus saline‐injected fish (75.4%; 1.1 μl g‐BW−1, respectively) were not significantly different from the control fish (76.2%; 1.3 μl g‐BW−1, respectively). Handled plus hCG‐treated fish had the lowest mean sperm density (8.4 × 106 cells μl−1) and spermatocrit (54.7%), but had the highest mean milt production (5.5 μl g‐BW−1) among the treatment groups. These results demonstrate that the hCG injection effectively induces spermiation and milt expression and that handling‐related stress negatively affects such responses. The spermatocrit method may be used to assess the spermiation and milt response of silver perch.
      PubDate: 2014-01-20T23:28:03.649063-05:
      DOI: 10.1111/jai.12383
  • Effect of the number of meshes in the protective bag circumference on size
           selectivity of demersal trawl codends
    • Authors: C. Aydın; T. Şensurat, Y. Özdemir, Z. Tosunoğlu
      First page: 454
      Abstract: This study investigated the effect of the number of meshes in the protective bag circumference on size selectivity of a demersal trawl codend. Circumferences of 50‐mesh (NMPB50) and 215‐mesh (NMPB215) protective bags rigged on the 44 mm diamond mesh codend were tested. Fishing experiments were carried out on the commercial trawler ‘Hapuloğlu’ between 20 and 27 August 2010, using a modified trawl net. Data were collected using the covered codend method and analyzed using the logistic equation with the maximum likelihood method. Mean selection curves were analyzed and compared using the between‐haul variations model. The mean L50 values of NMPB50 and NMPB215 were, respectively, 16.4 ± 0.1 mm and 16.5 ± 0.1 mm carapace length for deep‐water rose shrimp, 10.7 ± 0.1 cm and 12.2 ± 0.1 cm total length for hake, and 16.0 ± 0.1 cm and 16.7 ± 0.1 cm total length for horse mackerel. In conclusion, increasing the number of meshes around the protective bag resulted in a 14% and 4% increase in the L50 for hake and mackerel, respectively; however, these differences were not statically significant (P > 0.05).
      PubDate: 2014-03-10T04:12:38.184787-05:
      DOI: 10.1111/jai.12413
  • The recent population expansion of boarfish, Capros aper (Linnaeus, 1758):
           interactions of climate, growth and recruitment
    • Authors: J. O. Coad; K. Hüssy, E. D. Farrell, M. W. Clarke
      First page: 463
      Abstract: The objectives of this study were to evaluate whether temperature changes in the Northeast Atlantic influence the growth and recruitment dynamics of boarfish, Capros aper. Two geographically separate areas were examined, ‘north’ at the northern distribution range west of Ireland and ‘south’ on the main fishing grounds south of Ireland. No significant differences in length‐at‐age were observed between the two areas. Interannual otolith growth patterns were similar between the two areas with distinct years of faster and slower growth. In the ‘north’, no significant relationship between adult growth and temperature was observed, while growth in the ‘south’ was positively related to temperature up to approximately 16°C growth rates were suppressed in the years with temperatures above that. Recruitment showed a positive correlation with adult growth the previous year for the Spanish recruitment index only, suggesting spatial connectivity between the Celtic Sea and the Bay of Biscay. The age distributions were similar in both areas and despite the boarfish's longevity of >30 years, are dominated by the age classes corresponding to the years with high recruitment, suggesting that increased recruitment is responsible for the observed stock expansion.
      PubDate: 2014-02-21T00:52:14.32237-05:0
      DOI: 10.1111/jai.12412
  • Explicit site fidelity of European catfish (Silurus glanis, L., 1758) to
           man‐made habitat in the River Meuse, Netherlands
    • Authors: N. W. P. Brevé; R. Verspui, G. A. J. Laak, B. Bendall, A. W. Breukelaar, I. L. Y. Spierts
      First page: 472
      Abstract: After a century of near absence, records of European catfish (Silurus glanis, L., 1758) in the Netherlands have increased markedly since 1994. The majority of records (about 60% of the total) originate from a 12 km dammed section of the River Meuse in the province of Limburg. This paper reports on a study conducted to obtain information on the behaviour and habitat preferences of catfish at this location, whereby 20 adult Silurus glanis were implanted with both acoustic and transponder tags and their behavior monitored using a combination of passive and active methodologies. All fish remained within the study area and did not enter either the contiguous riverine sections or connected lakes. The catfish expressed schooling, nocturnal activity and strong site fidelity to a specific river section containing artificial habitat (in the form of moored boats) and were influenced by the presence and operation of nearby energy generation plants. The results are discussed in relation to the potential growth and dispersal of catfish populations and the extent to which anthropogenic activities (particularly energy generation schemes) at the site have inadvertently created favourable habitat that has assisted the colonization of catfish and impacted negatively on the wider fish community.
      PubDate: 2014-02-19T02:58:01.899149-05:
      DOI: 10.1111/jai.12410
  • Growth and mortality of two small fishes, Toxabramis swinhonis
           Günther, 1873 and Hyporhamphus intermedius (Cantor, 1842), in a
           Yangtze shallow lake (China) assessed by length frequency analysis
    • Authors: S. Ye; J. Moreau, W. Zeng, T. Zhang, J. Liu, Z. Li
      First page: 479
      Abstract: This study examined the growth and mortality of two widespread small fish species, Toxabramis swinhonis (Cyprinidae) and Hyporhamphus intermedius (Hemiramphidae), from a shallow lake (Niushan Lake, China) along the Yangtze River, by analyzing monthly length frequency data (July 2005 to June 2006) with the FAO‐ICLARM stock assessment tool (FiSAT). Estimated von Bertalanffy growth equation parameters were: L∞ (asymptotic length) = 145 mm TL, and K (growth coefficient) = 0.66 year−1 for T. swinhonis; L∞ = 189 mm TL, and K = 0.68 year−1 for H. intermedius. The instantaneous rates of natural mortality (M) calculated for T. swinhonis and H. intermedius were 1.35 and 1.28 year−1, respectively. The length‐converted catch curve method gave the total annual instantaneous mortality rate (Z) of 2.92 year−1 for T. swinhonis and 1.53 year−1 for H. intermedius. Recruitment patterns of both species were continuous, displaying a single major peak event per year. Despite not being of direct fishing interest, T. swinhonis, with high abundance and productivity as indicated by a high Z‐value, can be an important species in fisheries management as an excellent food source for aquatic organisms, especially for larger fishes of economic value. These results represent the first information on population characteristics of T. swinhonis and H. intermedius, and constitute a comparison base for future growth studies in other lake environments.
      PubDate: 2014-03-07T01:08:45.540182-05:
      DOI: 10.1111/jai.12405
  • Feeding habits of the king soldier bream, Argyrops spinifer
           (Forsskål, 1775) (Perciformes: Sparidae), in the northern Persian
    • Authors: M. Ghanbarzadeh; N. M. Soofiani, Y. Keivany, S. A. T. Motlagh
      First page: 485
      Abstract: The feeding habits of the king soldier bream Argyrops spinifer (Forsskål, 1775), were examined in the northern part of the Persian Gulf (coastal waters of Bushehr, Iran). The stomach contents of 622 specimens, 13.5–64.2 cm in total length, collected by a trawl boat from June 2010 to May 2011, were analysed to assess the influence of size, season and sex on their diet composition. Amongst the examined stomachs, 57 were empty (vacuity index = 9.2%), which varied significantly (P 
      PubDate: 2014-01-10T12:00:13.794252-05:
      DOI: 10.1111/jai.12397
  • Identifying the biodiversity of marine jacks (Carangidae) in the
           freshwater Taal Lake, Philippines using phenotypic features and
           mitochondrial DNA
    • Authors: D. A. Willette; J. I. M. Padin
      First page: 490
      Abstract: Jacks, members of the genus Caranx (Perciformes: Carangidae), comprise economically‐important marine fisheries across the world. In the Philippines, this valued fishery extends from the marine environment into a freshwater volcanic lake, Taal Lake. Two jacks, Caranx ignobilis (Forsskål, 1775) and C. sexfasciatus (Quoy and Gaimard, 1825), have long been reported from the lake, with recent molecular evidence alluding to genetic divergence between marine and freshwater populations. Here, a combination of phenotypic features and the mitochondrial Cytochrome oxidase b gene region were used explicitly to profile the taxonomic relationship between marine and freshwater specimens of C. ignobilis and C. sexfasciatus. Using molecular data from all known Philippine Caranx species, a partial phylogeny of the genus was reconstructed and contrasted to observed colouration, morphological and meristic features. Findings include the first report of C. papuensis, in Taal Lake; however, previous reports of C. sexfasciatus are not validated. Caranx ignobilis was confirmed present, yet several morphological features were unique to lake specimens, including red instead of yellow colouration of the lower jaw, anal fins, and caudal peduncle, and four instead of two canine teeth. Further, C. ignobilis sequence distance was 6.3% between marine and lake specimens, whereas C. papuensis distance was 0.2%. The combined molecular and phenotypic data suggest that Taal Lake C. ignobilis may represent an evolutionarily unique lineage. These data are significant for developing management strategies that have typically overlooked the ecological and evolutionary attributes of the jack fishery.
      PubDate: 2014-02-23T02:46:08.165734-05:
      DOI: 10.1111/jai.12411
  • Effect of replacing different levels of dietary fishmeal with Jatropha
           curcas kernel meal on the development of Nile tilapia Oreochromis
           niloticus (Linnaeus, 1758)
    • Authors: C. Krome; K. Jauncey, S. Fedderke, U. Focken
      First page: 507
      Abstract: The present trial tested the applicability of Jatropha curcas kernel meal (JKM) as a protein source in diets for Nile tilapia (Oreochromis niloticus) in terms of growth and body composition. Four diets were produced replacing 0% (Control), 50% (J50), 75% (J75) and 100% (J100) of fishmeal with JKM. In a fifth diet, 70% of fishmeal was replaced by JKM, and another 20% replaced by blood meal to minimize crystalline lysine addition. Body mass gain of fish fed the control diet was significantly higher than in all other treatments. However, specific growth rate (SGR) and feed conversion ratio (FCR) were not significantly different between diets J50, J75 and the control. Fish fed the control diet had a lower body protein content, but higher body fat and energy content than fish fed the JKM‐based diets. An adaptation of fish fed diets J50, J75 and J100 could also be observed, as these diets showed worse FCR‐values over most of the first three quarters of the experiment and equal (or in the case of J75, even significantly better) FCR‐values over the final 2 weeks. Despite slightly slower growth, JKM should be further included in the search of alternative plant‐feedstuffs in diets for tilapia, as the growth observed here for up to 75% replacement of fishmeal was very promising.
      PubDate: 2014-03-07T01:08:49.979437-05:
      DOI: 10.1111/jai.12414
  • Identification of Mycobacterium species from apparently healthy freshwater
           aquarium fish using partial sequencing and PCR‐RFLP analysis of heat
           shock protein (hsp65) gene
    • Authors: S. Shukla; S. K. Shukla, R. Sharma, A. Kumar
      First page: 513
      Abstract: The present study analysed the incidence of mycobacteria in apparently healthy looking freshwater aquarium fish in Uttar Pradesh (State), India. Sixty fish belonging to eight different species were collected from six aquarium shops in different cities and processed for isolation of Mycobacterium species. Using the initial protocol of decontamination of tissue homogenates (with 1N HCl & 2N NaOH) and incubation at 30°C for 2 months, Mycobacterium sp. was isolated from 25% of the fish. The isolates were identified by standard biochemical tests. A 441 bp fragment of the hsp65 gene was amplified and digested by two fastdigest restriction enzymes, BstEII and HaeIII. Digested products were analysed using agarose gel electrophoresis. Sequencing of amplified fragments of the hsp65 gene was also performed. Isolates were identified as: five isolates of M. abscessus, three M. gordonae, two M. fortuitum, two M. conceptionense, two M. parascrofulaceum, and one isolate of M. senegalense. Mycobacterial incidence in apparently healthy looking freshwater aquarium fish is dreadful and the study is relevant because of the mycobacterial diversity related to aquarium fish and its zoonotic importance. All Mycobacterium species isolated in this study are well known pathogens in humans as well as fish.
      PubDate: 2014-03-07T01:10:40.244357-05:
      DOI: 10.1111/jai.12415
  • Common snook [Centropomus undecimalis (Bloch, 1792)] preys on the invasive
           Amazon sailfin catfish [Pterygoplichthys pardalis (Castelnau, 1855)] in
           the Palizada River, Campeche, southeastern Mexico
    • Authors: A. Toro-Ramírez; A. T. Wakida-Kusunoki, L. E. Amador-del Ángel, J. L. Cruz-Sánchez
      First page: 532
      PubDate: 2014-01-30T00:34:38.580285-05:
      DOI: 10.1111/jai.12391
  • On the record of pug‐headedness in cultured Atlantic salmon, Salmo
           salar Linnaeus, 1758 (Salmoniformes, Salmonidae) from Norway
    • Authors: L. A. Jawad; A. Kousha, F. Sambraus, P. G. Fjelldal
      First page: 537
      PubDate: 2014-01-08T09:59:45.285914-05:
      DOI: 10.1111/jai.12403
  • Full westward expansion of Rutilus rutilus (Linnaeus, 1758) in the Iberian
    • Authors: F. Ribeiro; A. Veríssimo
      First page: 540
      PubDate: 2014-02-28T13:45:06.101369-05:
      DOI: 10.1111/jai.12418
  • Histopathological alterations in rainbow trout, Oncorhynchus mykiss
           (Walbaum, 1792), induced by irradiated alginic acid
    • Authors: M. Heidarieh; F. Daryalal, A. R. Mirvaghefi, A. A. Shahbazfar, S. Moodi, H. Heidarieh
      First page: 543
      PubDate: 2014-02-28T13:45:04.049904-05:
      DOI: 10.1111/jai.12417
  • Length–weight relationships of six fish species from the upper
           reaches of the Yangtze River, southwest China
    • Authors: L. Pan; J. J. Xie, Z. Yang, H. Y. Tang, Y. Qiao
      First page: 552
      Abstract: Length–weight relationships (LWRs) were determined for six endemic fish species [Glyptothorax fokiensis (Rendahl, 1925), Lepturichthys fimbriata (Günther, 1888), Liobagrus marginatus (Günther, 1892), Percocypris pingi (Tchang, 1930), Pseudobagrus pratti (Günther, 1892) and Sinibotia superciliaris (Günther, 1892)] from the Pan Zhihua reach of the Jinsha River, which is located in the upper reaches of the Yangtze River, southwest China. Samples were obtained between May 2004 and April 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. Values of b were between 2.306 for P. pratti and 2.934 for P. pingi, and r2 values ranged from 0.952 for G. fokiensis to 0.995 for P. pingi. Prior to this study, the LWRs for three of these endemic species were unknown.
      PubDate: 2014-02-28T13:45:02.420047-05:
      DOI: 10.1111/jai.12416
  • Length–weight, length–length relationships and length at first
           maturity of fish species from the Paraná and Uruguay rivers,
    • Authors: S. Llamazares Vegh; I. E. Lozano, A. A. Dománico
      First page: 555
      Abstract: Length–weight relationships (LWR) were estimated for 12 species, representing three orders and eight families of fishes from the Paraná and Uruguay rivers in Argentina: Acestrorhynchus pantaneiro, Cynopotamus argenteus, Pachyurus bonariensis, Pterodoras granulosus, Hypostomus commersoni, Pseudoplatystoma corruscans, Pimelodus maculatus, Parapimelodus valenciennis, Salminus brasiliensis, Prochilodus lineatus, Hoplias malabaricus and Leporinus obtusidens. For the last four species, the length at first spawning (Lm) was estimated using three different methods. The captures were made in shallow river areas during 2005–2013. Significant length–weight relationships were found for all species. None or few LWRs were previously available for these species.
      PubDate: 2014-03-07T00:41:10.638955-05:
      DOI: 10.1111/jai.12408
  • Length–weight and length–length relationships for common fish
           and crayfish species in the Everglades, Florida, USA
    • Authors: J. A. Klassen; D. E. Gawlik, B. A. Botson
      First page: 564
      Abstract: Length–weight and length–length relationships are reported for 18 species of fish and two species of crayfish within the Everglades, FL, USA. This study provides updated relationships for native species, as well as initial relationships for established exotic species in this region. Additionally, 14 length–weight and two length–length relationships are presented to FishBase for the first time.
      PubDate: 2014-02-19T02:33:26.359891-05:
      DOI: 10.1111/jai.12406
  • Inheritance of a darkened caudal peduncle and yellow body coloration in
           the gilthead sea bream (Sparus aurata L.)
    • Authors: S. Gorshkov
      First page: 441
      Abstract: This study presents data on inheritance of a darkened caudal peduncle (ebony) and yellow body coloration (yellow) in the gilthead sea bream (Sparus aurata). Fifteen progeny groups, obtained by crossing fish with three color phenotypes and of known origin, were analyzed. Analyzes of segregation in F1 progeny involving groups from parental crosses of wild‐type colored × wild‐type colored; ebony × ebony; yellow × yellow, showed that the parents produced the offspring only with the same phenotypes (true breeding). Crosses involving F1 wild‐type colored parents (that resulted from crosses of wild‐type parents with either ebony or yellow fish) showed in their F2 progeny groups of which their phenotypic segregations did not differ significantly from a 3 : 1 Mendelian ratio. The progeny of back‐cross of ebony × (F1 wild‐type colored × ebony) showed phenotypic segregations that did not differ significantly from the 1 : 1 Mendelian ratio. Overall, the results of the crossing experiments demonstrated that, similar to albinism described in a number of aquacultured species, ebony and yellow body coloration in S. aurata are both due to a single recessive allele. However, the yellow mutation of a gene controlling yellow pigment synthesis affects the yellow color of the whole fish body, whereas the ebony mutation causes production of melanin only in a specific area of the fish body, resulting in the development of a black coloration of the caudal peduncle. Experiments to assess culture performance showed that the color genes controlling ebony and yellow coloration had significant detrimental pleiotropic effects on growth, survival and body shape. Color mutations in the gilthead sea bream may be used as models for the study of: (i) genetic and physiological mechanisms of sterility, (ii) stress and disease resistance, (iii) effects of heterosis, (iv) genetic polymorphism in populations, and (v) methods of genetic protection in selected sea bream strains as well as in experiments on chromosome set manipulation.
      PubDate: 2013-11-11T07:20:36.760256-05:
      DOI: 10.1111/jai.12340
  • Organochlorine pesticides in Muraena helena L. 1758 from the Eastern
           Adriatic Sea
    • Authors: D. Đikić; A. Mojsović Ćuić, G. Jurak, D. Lasić, D. Skaramuca, S. Matić-Skoko, P. Tutman, J. Bošnir, D. Franjević, Z. Franić, R. Fuchs, B. Skaramuca
      First page: 496
      Abstract: This work examines the bioaccumulated organochlorine compounds in Muraena helena to draw attention to this species as a potential bioindicator organism. The morays were caught in the East Adriatic Sea, Elaphite Islands, near Dubrovnik, Croatia (lat: 42°45′38.8″; long: 17°45′53.6″) at the same location in summer (August, 2009) and winter (January, 2010), at depths from 5 to 10 m. Nine fish were caught by longline hooks per each field trip (total in summer and winter, N = 18). No single fish was free of organochlorines (OC), but not all pesticides were present in every fish. The concentration level was: Endrin > ppDDE > Heptachlor epoxide > Heptachlor > Aldrine > Lindane > βHCH > δHCH > Endrin aldehyde). Endrin was the only pesticide approaching the maximum concentrations proposed by the European Union and Croatia (summer max. concentration = 14.75 μg kg−1; winter max. concentration = 8.35 μg kg−1). All other pesticides ranged from 0.1 to 0.7 μg kg−1. Heptachlor was absent in winter and δ‐HCH and Endrin aldehyde in summer, while Lindane and pp‐DDE had higher (P ≤ 0.05) concentrations in summer. Other residues had similar seasonal concentration levels. The p‐DDT was similar as in other biota from the Adriatic or Mediterranean. HCH concentrations corresponded to those found in organisms from the Italian area of the Adriatic. The endocrine and reproductive disrupting potential of the detected OCs are bases for future studies. Results show that morays are a good bioindicator model, with slight interspecies and seasonal variability in OC bioaccumulation as a consequence of diverse food consumption.
      PubDate: 2013-12-26T07:10:35.41616-05:0
      DOI: 10.1111/jai.12385
  • Comparative study of the molting cycle of wild and reared swimming crabs
           Callinectes danae (Crustacea: Portunidae)
    • Authors: R. A. Shinozaki-Mendes; R. F. Manghi, R. Lessa
      First page: 502
      Abstract: Specimens of Callinectes danae Smith 1869 were caught in northeastern Brazil (2178 males, 2031 females); of these, 24 males and 24 females were reared for 6 months. Water temperature (T) and salinity (S) showed a significant effect on the average ecdysis in wild crab (μ), with a model obtained that was: μ = exp(−0.12268T + 0.06148S)/(1 + exp(−0.12268T + 0.06148S)). Size at morphometric maturity was significantly larger for wild males and females (9.45 and 8.38 cm, respectively) than for reared individuals (8.95 and 7.93 cm). Females of sizes above CW50 (carapace width at maturation) showed an increased ecdysis activity, whereas males showed a decrease in ecdysis frequency in sizes over CW50. Five and six molts were observed for females and males, respectively, in both wild and reared crabs; the modal classes of the reared crabs were shifted to smaller sizes. In reared females the terminal‐pubertal molt occurred at 107 days of age and at 148 days, on average, in males. The intermolt period varied from 8 to 41 days and increased with age.
      PubDate: 2013-05-21T06:51:54.175653-05:
      DOI: 10.1111/jai.12236
  • Fatty acid composition and content of round goby (Neogobius melanostomus
           Pallas 1814) and monkey goby (Neogobius fluviatilis Pallas 1814), two
           invasive gobiid species in the lower Rhine River (Germany)
    • Authors: M. R. Ghomi; E. Elert, J. Borcherding, P. Fink
      First page: 527
      PubDate: 2013-08-26T07:50:47.356799-05:
      DOI: 10.1111/jai.12312
  • A lag of 25 years: evidence from an old capture of Fistularia commersonii
           Rüppell, 1838 from Lebanon (Mediterranean Sea)
    • Authors: M. Bariche; G. Kazanjian, E. Azzurro
      First page: 535
      PubDate: 2013-12-19T04:25:41.622023-05:
      DOI: 10.1111/jai.12394
  • Growth and condition factor of hybrid (Bighead Hypophthalmichthys nobilis
           Richardson, 1845 × silver carp H. molitrix Valenciennes,
           1844) Asian carps in the shallow, oligo‐mesotrophic Lake Balaton
    • Authors: G. Boros; A. Mozsár, Z. Vitál, A. S. Nagy, A. Specziár
      First page: 546
      PubDate: 2013-10-07T01:51:56.462481-05:
      DOI: 10.1111/jai.12325
  • Length–weight relationships of 38 fish species of the Magdalena
           River floodplain lakes
    • Authors: A. Hernández-Serna; V. Márquez-Velásquez, J. D. Carvajal-Quintero, A. Gulfo, C. Granado-Lorencio, L. F. Jiménez-Segura
      First page: 549
      Abstract: This study reports length–weight relationships for 38 fish species belonging to 18 families inhabiting the Magdalena River floodplain lakes of Colombia. Samples were taken during the high water season of 2008, 2010 and 2011. Two species are presented for the first time. Maximum total length records for 24 species exceed those in FishBase.
      PubDate: 2013-12-07T03:42:27.715729-05:
      DOI: 10.1111/jai.12379
  • An update of the length–weight and length–age relationships of
           the European eel (Anguilla anguilla, Linnaeus 1758) in the Comacchio
           Lagoon, northeast Adriatic Sea, Italy
    • Authors: G. Castaldelli; V. Aschonitis, M. Lanzoni, F. Gelli, R. Rossi, E. A. Fano
      First page: 558
      Abstract: An update of length–weight and length–age relationships for yellow, silver and mixed population of European eels (Anguilla anguilla L.) of the Comacchio Lagoon, Italy, is provided in this study using data obtained in 2011. This historically important eel stock has undergone 99% feminization, probably due to the significant density reduction over the past three decades. The results show that these conditions did not affect the length–weight relationships, which approximate those of the late 1970s, but they do affect the length–age relationships, leading to faster maturation rates. These conditions lead to younger, longer and heavier silver eels before their migration to the Sargasso Sea.
      PubDate: 2013-12-26T07:09:36.417219-05:
      DOI: 10.1111/jai.12392
  • Length–weight relationships of eight cyprinid fishes from the Geum
           River in South Korea
    • Authors: J.-D. Yoon; J.-H. Kim, S.-H. Baek, M.-S. Byeon, M.-H. Jang
      First page: 560
      Abstract: The length‐weight relationships for eight native freshwater fish species collected in the Geum River, South Korea, were analysed. LWR data for six of the species were not available in FishBase.
      PubDate: 2013-12-30T04:12:29.121709-05:
      DOI: 10.1111/jai.12386
  • Length–weight relationships for five loach species collected from
           the Jinshajiang River, China
    • Authors: B. Waryani; R. Dai, S. K. Panhwar, Y. Zhao, J. Zhang, C. Zhang, W. Cao
      First page: 562
      Abstract: Length–weight relationships were estimated for the first time for five loaches of the Jinshajiang River, China. Four of the species are endemic to China. The scientific names are: Clea dabryi (Sauvage, 1874); Homatula variegata (Dabry de Thiersant, 1874); Sinibotia superciliaris (Gunther, 1892); Triplpphysa anterodorsalis (Zhu & Cao, 1989); and Triplophysa leptosoma (Herzenstein, 1888).
      PubDate: 2013-12-19T04:25:39.171335-05:
      DOI: 10.1111/jai.12387
  • Length‐weight relationships of 10 fish species found off Antalya
           Bay, eastern Mediterranean
    • Authors: M. C. Deval; O. Güven, İ. Saygu, T. Kabapçioğlu
      First page: 567
      Abstract: Length–weight relationships (LWRs) are presented for eight teleost and two elasmobranch fish species representing ten families that were captured in deep water (from 400 to 1000 m, except for the stingray Dipturus centrura) in Antalya Bay. This study represents the first LWR references for eight of these species.
      PubDate: 2013-12-19T04:25:36.963338-05:
      DOI: 10.1111/jai.12382
  • Effect of short‐term (0–72 h) fasting on serum
           biochemical characteristics in rainbow trout Oncorhynchus mykiss
    • Authors: S. M. Hoseini; M. Yousefi, H. Rajabiesterabadi, M. Paktinat
      First page: 569
      Abstract: An experiment was carried out to investigate the effects of short‐term fasting periods on the serum biochemical characteristics of rainbow trout, Oncorhynchus mykiss. For this purpose, fish were fasted 0, 6, 12, 24, 48 and 72 h before blood sampling. Thereafter the serum levels of thyroxine (T4), 3,5,3′‐triiodothyronine (T3), cortisol, glucose, lactate, triglyceride, cholesterol, total protein, albumin, globulin and albumin : globulin ration (A : G) were determined. Results show that serum levels of T4 (4.60–8.77 ng ml−1), T3 (7.50–13.3 ng ml−1), cortisol (7.91–24.5 ng ml−1), glucose (18.5–80.1 mg dl−1), lactate (12.7–29.6 mg dl−1), triglyceride (171–500 mg dl−1), and cholesterol (321–535 mg dl−1) were significantly affected by the fasting period. However, there were no significant changes in serum total protein (3.03–3.68 g dl−1), albumin (1.78–2.01 g dl−1), globulin (1.15–1.70 g dl−1) or A : G (1.13–1.93) among the fish fasted 0–72 h. Results clearly show the importance of a fasting period on the serum biochemical properties of rainbow trout. According to the results, 24 h fasting is suggested as a pre‐sampling fasting period in rainbow trout to measure serum levels of T4, T3, cortisol, glucose, lactate, triglyceride, and cholesterol. Potential mechanisms related to the changes in biochemical properties are discussed.
      PubDate: 2013-04-22T01:55:58.991667-05:
      DOI: 10.1111/jai.12221
  • A checklist of parasites in non‐native populations of rotan
           Perccottus glenii Dybowski, 1877 (Odontobutidae)
    • Authors: S. G. Sokolov; A. N. Reshetnikov, E. N. Protasova
      First page: 574
      Abstract: This review presents data on diversity, prevalence, and distribution of protistan and metazoan parasites in non‐native populations of the rotan Perccottus glenii. The information was collected using peer reviewed journals, difficult to access grey literature, and original data of the authors. As a whole, 70 literature sources from 1971 to 2012 were analyzed. The data originate from five of the 17 countries already colonized by P. glenii. A total of 97 parasite species/taxa are listed, each with the location in/on the host, geographical localities, countries, and literature sources. Where available, the number of fish examined as well as the prevalence and range of infection intensity are cited from the respective sources. Attention is given to host‐specific parasites because the rotan is a vector of their new geographical distribution. The current state and perspectives for further research are discussed.
      PubDate: 2013-09-13T00:26:30.42751-05:0
      DOI: 10.1111/jai.12281
  • New length–weight relationships and Lmax values for fishes from the
           Southeastern Mediterranean Sea
    • Authors: D. Edelist
      First page: 521
      Abstract: Length–weight relationships (LWR) of fish serve as building blocks in ichthyology and fishery science. In this study LWR knowledge is extended to some species, regions and sizes of fish either incomplete or missing from the literature or from the online databank (FishBase). For several species data are presented for the first time, while other entries are improved and expanded. Organisms were captured by trawl from the continental shelf of the Israeli coast, where fishes were hypothesized as being small due to low productivity and high water temperatures – a phenomenon called ‘Levantine Nanism’. Despite this, for nine of the 43 species presented here the maximum length values exceeded their Lmax in FishBase. The dominance of fishes of Indo‐Pacific origin among the species with exceptionally large specimens (7 of 9) is in agreement with Bergmann's rule; it is thus hypothesized here that these large specimens result from the low temperatures in the Mediterranean compared to their warm Indo‐Pacific sources. This is an example of the superb adaptation of tropical species to the Mediterranean and suggests that Levantine Nanism may be limited to indigenous species.
      PubDate: 2012-08-20T08:00:37.39382-05:0
      DOI: 10.1111/j.1439-0426.2012.02060.x
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