Assessment of digestive enzymes activity during the fry development of the endangered Caspian brown trout Salmo caspius.

abstract：:The effect of digestion by a predatory fish (largemouth bass Micropterus salmoides) on stable isotopic (delta(13)C and delta(18)O) and trace elemental (Sr:Ca and Ba:Ca) compositions of prey fish (bluegill Lepomis macrochirus) otoliths was investigated in a laboratory experiment. Trace element and stable-isotopic signa...

journal_title：Journal of fish biology

authors： Phelps QE,Noatch MR,Lewis HA,Myers DJ,Zeigler JM,Eichelberger JS,Saltzgiver MJ,Whitledge GW

更新日期：2009-12-01 00:00:00

abstract：:This study was conducted to evaluate the potential pathogenicity of the bacterium Flavobacterium columnare on rainbow trout Oncorhynchus mykiss eyed eggs. Survival to hatching was unaffected by the inclusion in the incubation water of either 300 colony-forming units (CFU) ml(-1) or 3000 CFU ml(-1) of F. columnare at e...

journal_title：Journal of fish biology

authors： Barnes ME,Bergmann D,Jacobs J,Gabel M

更新日期：2009-02-01 00:00:00

abstract：:We investigated the density and size structure of the endangered Knysna seahorse Hippocampus capensis in the macroalga Codium tenue at three sites in a residential marina estate in the Knysna Estuary, South Africa, over an 18 month period from March 2017 to August 2018. Seahorses were present in C. tenue throughout th...

journal_title：Journal of fish biology

authors： de Villiers NM,Barker C,Claassens L,Hodgson AN

更新日期：2019-12-01 00:00:00

abstract：:An experiment quantified the effect of food ration and spawning number on the breeding season reproductive performance of batch-spawning, female three-spined sticklebacks Gasterosteus aculeatus. Individually housed females were maintained on fixed rations of 2, 4, 8 or 16% of their initial postspawning mass of live en...

journal_title：Journal of fish biology

authors： Wootton RJ,Fletcher DA

更新日期：2009-08-01 00:00:00

abstract：:Assemblages of roving herbivores were consistently different between eastern, warmer, sheltered sites and western, colder, more wave-exposed sites. At eastern sites, detritivorous-herbivorous species dominated while omnivores had the highest biomass and were dominant at western sites. Macroalgivores did not show any t...

journal_title：Journal of fish biology

authors： Cordeiro CA,Mendes TC,Harborne AR,Ferreira CE

更新日期：2016-07-01 00:00:00

abstract：:Flatfishes are a group of teleosts of high commercial and environmental interest, whose biology is still poorly understood. The recent rapid development of different 'omic' technologies is, however, enhancing the knowledge of the complex genetic control underlying different physiological processes of flatfishes. This ...

journal_title：Journal of fish biology

authors： Cerdà J,Douglas S,Reith M

更新日期：2010-10-01 00:00:00

abstract：:Laser photogrammetry was found to be a promising new cost-effective technique for measuring free-swimming whale sharks Rhincodon typus. Photogrammetric measurements were more precise than visual size estimates by experienced researchers, with results from the two methods differing by 9· 8 ± 1· 1% (mean ±s.e.). A new m...

journal_title：Journal of fish biology

authors： Rohner CA,Richardson AJ,Marshall AD,Weeks SJ,Pierce SJ

更新日期：2011-01-01 00:00:00

abstract：:Hybrid advantage, described as the superiority of hybrids in some traits over their parents and termed the "heterosis effect," is widely documented in the case of reciprocal crosses of parental species (i.e., hybrids representing the F1 generation). In fish, high survival, fast growth and better health status have bee...

journal_title：Journal of fish biology

authors： Šimková A,Janáč M,Hyršl P,Krasnovyd V,Vetešník L

更新日期：2020-12-19 00:00:00

abstract：:Otolith shape variation of seven Atlantic herring Clupea harengus populations from Canada, the Faroe Islands, Iceland, Ireland, Norway and Scotland, U.K., covering a large area of the species' distribution, was studied in order to see if otolith shape can be used to discriminate between populations. The otolith shape ...

journal_title：Journal of fish biology

authors： Libungan LA,Óskarsson GJ,Slotte A,Jacobsen JA,Pálsson S

更新日期：2015-04-01 00:00:00

abstract：:As far as is known, in this paper the first case of lacking of skin-related structures (epidermis, stratum laxum, dermal denticles and teeth) in a free-swimming elasmobranch, the blackmouth catshark, Galeus melastomus, is reported. The individual was caught by trawl in Sardinian waters (central-western Mediterranean) ...

journal_title：Journal of fish biology

authors： Mulas A,Bellodi A,Porcu C,Cau A,Coluccia E,Demurtas R,Marongiu MF,Pesci P,Follesa MC

更新日期：2020-10-01 00:00:00

abstract：:Introduced Gambusia holbrooki in a natural lagoon of southern Spain consisted of two age groups: 1992 cohort, 7-11 months old and 1993 cohort, <4 months old. In the 1992 cohort, females grew even during the gestation period at about 0.30 mm day-1. In the 1993 cohort, females displayed a high growth rate (0.55 mm day-1...

journal_title：Journal of fish biology

authors： Fernandez-Delgado C,Rossomanno S

更新日期：1997-07-01 00:00:00

abstract：:The diets of 21 terapontid species from freshwater environments in northern Australia were investigated to determine the similarity and dissimilarity among species and the extent of any ontogenetic shifts. Distinct ontogenetic dietary shifts occurred in all species for which sufficient data were available, with many s...

journal_title：Journal of fish biology

authors： Davis AM,Pearson RG,Pusey BJ,Perna C,Morgan DL,Burrows D

更新日期：2011-01-01 00:00:00

abstract：:This study found that introgressive hybridization of the pallid sturgeon Scaphirhynchus albus with the common shovelnose sturgeon Scaphirhynchus platorynchus has probably occurred across the range of S. albus. Bayesian clustering found evidence of hybridization in all management units of S. albus. Some individuals wer...

journal_title：Journal of fish biology

authors： Schrey AW,Boley R,Heist EJ

更新日期：2011-12-01 00:00:00

abstract：:The present study is the first to provide data on the reproductive biology of cuckoo ray Leucoraja naevus in Portuguese continental waters. No difference in size at maturity was detected between sexes, which was estimated as 56 cm total length. Spawning occurs all year round, but maximum activity was during winter mon...

journal_title：Journal of fish biology

authors： Maia C,Erzini K,Serra-Pereira B,Figueiredo I

更新日期：2012-09-01 00:00:00

abstract：:Energy densities of 670 fishes belonging to nine species were measured to evaluate intraspecific variability. Functional groups based on energy density appeared to be sufficiently robust to individual variability to provide a classification of forage fish quality applicable in a variety of ecological fields including ...

journal_title：Journal of fish biology

authors： Spitz J,Jouma'a J

更新日期：2013-06-01 00:00:00

abstract：:The reproductive cycle of seven common species (Gobius paganellus, Gobius bucchichi, Gobius cobitis, Parablennius sanguinolentus, Salaria pavo, Tripterygion tartessicum and Symphodus roissali) on rocky shores in the Gulf of Cadiz and their relationship with the sea surface temperature (SST) is analysed. Partial data o...

journal_title：Journal of fish biology

authors： Compaire JC,Casademont P,Gómez-Cama C,Soriguer MC

更新日期：2018-02-01 00:00:00

abstract：:Two new records of Hydrolagus melanophasma, one juvenile female from off the central Mexican coast and one adult male from off the coast of Ecuador, confirm the presence of this species throughout its known range in the eastern Pacific Ocean, from southern California, U.S.A., to Valdivia, Chile. This report gives a de...

journal_title：Journal of fish biology

authors： Aguirre-Villaseñor H,Salas-Singh C,Madrid-Vera J,Martínez-Ortiz J,Didier DA,Ebert DA

更新日期：2013-02-01 00:00:00

abstract：:An integrated socioecological model was developed to evaluate the potential for stock enhancement with hatchery fishes to achieve socioeconomic and conservation objectives in recreational fisheries. As a case study, this model was applied to the red drum Sciaenops ocellatus recreational fishery in the Tampa Bay estuar...

journal_title：Journal of fish biology

authors： Camp EV,Lorenzen K,Ahrens RN,Allen MS

更新日期：2014-12-01 00:00:00

abstract：:Recent average annual catches of sharks by tuna longline vessels fishing in the Republic of the Marshall Islands (RMI) are estimated to be between 1583 and 2274 t. Although 22 shark species have been recorded by the observer programme for this fishery, 80% of the annual catch comprises only five species: blue shark Pr...

journal_title：Journal of fish biology

authors： Bromhead D,Clarke S,Hoyle S,Muller B,Sharples P,Harley S

更新日期：2012-04-01 00:00:00

abstract：:A new loach Oreonectes guilinensis sp. nov. is described from Guangxi Zhuang Autonomous Region, China. It is the second surface-dwelling fish identified in the genus Oreonectes after the type species Oreonectes platycephalus. This new species can be distinguished from other species within the genus by the combination ...

journal_title：Journal of fish biology

authors： Huang JQ,Yang J,Wu ZQ,Zhao YH

更新日期：2020-01-01 00:00:00

abstract：:The effect of trophic exposure to pyrolitic polycyclic aromatic hydrocarbons (PAH) on aerobic metabolism of zebrafish Danio rerio was investigated. There were no significant differences in standard metabolic rate (SMR), active metabolic rate (AMR) or aerobic metabolic scope (AS) at any sublethal concentration of PAH i...

journal_title：Journal of fish biology

authors： Lucas J,Bonnieux A,Lyphout L,Cousin X,Miramand P,Lefrançois C

更新日期：2016-01-01 00:00:00

abstract：:From 2006 to 2009, 27 ultrasonic-tagged wild adult Chinese sturgeon Acipenser sinensis [eight males, 19 females; total length (L(T)) range = 245-368 cm] were captured on the spawning ground just downstream of Gezhouba Dam (GZD) in the Yangtze River. Twenty-six individuals were tracked for 7 to 707 days (mean number of...

journal_title：Journal of fish biology

authors： Wang CY,Wei QW,Kynard B,Du H,Zhang H

更新日期：2012-07-01 00:00:00

abstract：:Here we present records of sharks obtained using baited remote underwater stereo-video systems (stereo-BRUVS) at two Brazilian oceanic islands. Fourteen of the 60 deployments recorded 19 sharks in Trindade Island. In Saint Peter and Saint Paul Archipelago (SPSPA), two pelagic and two demersal deployments recorded two ...

journal_title：Journal of fish biology

authors： Pimentel CR,Andrades R,Ferreira CEL,Gadig OBF,Harvey ES,Joyeux JC,Giarrizzo T

更新日期：2020-02-01 00:00:00

abstract：:Chaetostoma chimu sp. nov. is described from 119 specimens collected in the Andean foothills of the Orinoco River in Colombia. The new species can be distinguished from congeners by a combination of characters, including shape of cheek odontodes, presence of a supraoccipital excrescence, sexual dimorphism characters a...

journal_title：Journal of fish biology

authors： Urbano-Bonilla A,Ballen GA

更新日期：2020-12-05 00:00:00

abstract：:To test the hypothesis that a switch in diet might cause changes in the abundance and composition of mucous-dwelling microorganisms, a short-term experiment was conducted with Atlantic salmon Salmo salar. Fish were fed on three different diets: pelleted S. salar feed, macroinvertebrates or pellets supplemented with an...

journal_title：Journal of fish biology

authors： Landeira-Dabarca A,Sieiro C,Álvarez M

更新日期：2013-03-01 00:00:00

abstract：:Association preferences and aggression intensity were investigated in relation to kin and familiarity in the self-fertilizing, clonal vertebrate, the mangrove killifish Kryptolebias marmoratus. Results indicated that fish preferentially associated with and exhibited less intense aggression towards members of their own...

journal_title：Journal of fish biology

authors： Edenbrow M,Croft DP

更新日期：2012-03-01 00:00:00

abstract：:This study examined the effects of four types of antinutritional factor (phytic acid, stachyose, soy saponins and soy isoflavones) on lipoprotein levels in plasma of Japanese flounder Paralichthys olivaceus. A basal diet was prepared with fish meal as primary protein source, the other diets were supplemented with 0·2,...

journal_title：Journal of fish biology

authors： Deng JM,Mai KS,Ai QH,Zhang WB,Wang XJ,Xu W,Liufu ZG,Cai YH,Chen W

更新日期：2012-02-01 00:00:00

abstract：:The community structure of the reef fish fauna of Trindade Island, a volcanic oceanic island located 1160 km off the coast of Brazil, is described based on intensive visual censuses. Seventy-six species were encountered in 252 censuses, with mean ± S.E. of 99 ± 3 individuals and 15.7 ± 0.3 species 40 m(-2) transect. T...

journal_title：Journal of fish biology

authors： Pinheiro HT,Ferreira CE,Joyeux JC,Santos RG,Horta PA

更新日期：2011-12-01 00:00:00

abstract：:Latitudinal variation in egg size and number in anadromous masu salmon Oncorhynchus masou was examined. Relatively greater variation in egg size occurred among rivers than among females within rivers or within females. Egg size was generally greater and egg number generally lower at more northerly latitudes. ...

journal_title：Journal of fish biology

authors： Morita K,Tamate T,Sugimoto Y,Tago Y,Watanabe T,Konaka H,Sato M,Miyauchi Y,Ohkuma K,Nagasawa T

更新日期：2009-02-01 00:00:00

abstract：:The critically endangered smalltooth sawfish Pristis pectinata reproduces biennially in central west Florida, U.S.A. Here we demonstrate that smalltooth sawfish are physiologically capable of reproducing annually in a captive environment. The smalltooth sawfish are held in an open system, with abiotic conditions that ...

journal_title：Journal of fish biology

authors： Flowers KI,Chapman DD,Kemp T,Wert D,Feldheim KA

更新日期：2020-11-01 00:00:00