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Registros recuperados: 25
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Spatial, seasonal and ontogenetic changes in food resource use by a piscivore fish in two Pantanal lagoons, Brazil Neotropical Ichthyology
Gimenes,Michele de Faveri; Fugi,Rosemara; Isaac,Andréia; Silva,Marlene Rodrigues da.
We evaluated the factors that affect the food resource use by Plagioscion ternetzi using three approaches: spatial, seasonal, and ontogenetic changes. Fish were sampled between March 2000 and February 2001 and March 2003 and February 2004 in the Sinhá Mariana and Chacororé lagoons, wetlands of the Pantanal Matogrossense. Fish was the predominant food in the diet, but shrimps and insects have been also consumed. The diet of P. ternetzi was significantly different between lagoons, but no difference was detected between dry and flood periods. In Sinhá Mariana lagoon, the diet mainly consisted of Psectrogaster curviventris, in both periods. In the flood period in Chacororé lagoon, fish was the dominant food (especially Astyanax spp., Leporinus spp. and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chacororé lagoon; Diet; Plagioscion ternetzi; Sciaenidae; Sinhá Mariana lagoon.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000100163
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Species Diversity and Relative Abundance of Fisheries Resources Found in Beach Seine along the Central Coast of Ghana OceanDocs
Aggrey-Fynn, J.; Sackey-Mensah, R..
The diversity and relative species abundance of fisheries resources were studied from Winneba to Cape Coast on the central coast of Ghana during December 2007 to May 2009. Samples of organisms were collected at random from beach seine landings during the study period. The fishes were counted and identified to the family and species levels. Ecological indices such as Shannon-Wiener diversity index, equitability and Sørenson’s similarity index were used to analyse the data. Specimens from Winneba, Saltpond and Cape Coast comprise 56 species belonging to 30 families. Carangidae, Haemulidae, Clupeidae and Sciaenidae were some of the families, where key species occurred during the study. The relative abundance of key organisms in the beach seine landings...
Tipo: Report Palavras-chave: Fish; Biodiversity; Relative abundance; Coastal fisheries; Carangidae; Haemulidae; Sciaenidae; Marine resources.
Ano: 2012 URL: http://hdl.handle.net/1834/5323
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The complete mitochondrial genome of the small yellow croaker and partitioned Bayesian analysis of Sciaenidae fish phylogeny Genet. Mol. Biol.
Cheng,Yuanzhi; Wang,Rixin; Sun,Yuena; Xu,Tianjun.
To understand the phylogenetic position of Larimichthys polyactis within the family Sciaenidae and the phylogeny of this family, the organization of the mitochondrial genome of small yellow croaker was determined herein. The complete, 16,470 bp long, mitochondrial genome contains 37 mitochondrial genes (13 protein-coding, 2 ribosomal RNA and 22 transfer RNA genes), as well as a control region (CR), as in other bony fishes. Comparative analysis of initiation/termination codon usage in mitochondrial protein-coding genes of Percoidei species, indicated that COI in Sciaenidae entails an ATG/AGA codon usage different from other Percoidei fishes, where absence of a typical conserved domain or motif in the control regions is common. Partitioned Bayesian analysis...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Larimichthys polyactis; Mitochondrial genome; Control region; Partitioned Bayesian analysis; Sciaenidae.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000100027
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The differential effects of changing management regimes on yields from two fisheries exploiting the same resources OceanDocs
Djama, Theodore; Pitcher, T.J..
A yield per recruit model has been used to compare the effects of mesh size increment on the yields and revenues of the fisheries of Cameroon under two different cases. Case 1 assumes the commercial fishery to move from the exploitation of three age-groups to two age-groups with no interactions with the artisanal fishery, whereas Case 2 takes into account these interactions. The difference in the percentage increase of yield per recruit between case 1 and case 2 is 61% at current fishing (46% and 18% yield per recruit increment in cases 1 and 2 respectively). The usually accepted long-term yield per recruit increment with increase of age at first capture (with a single non-interacting fisheries) is, in this case, cancelled out. However, the revenues...
Tipo: Journal Contribution Palavras-chave: Yield/recruit; Commercial fisheries; Artisanal fishing; Biology; Fisheries; Biological interaction; Sciaenidae; Fisheries development; Fishery management.
Ano: 1997 URL: http://hdl.handle.net/1834/5132
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Trophic ecology of commercial-size meagre, Argyrosomus regius, in the Bay of Biscay (NE Atlantic) ArchiMer
Hubans, Barbara; Chouvelon, Tiphaine; Begout, Marie-laure; Biais, Gerard; Bustamante, Paco; Ducci, Lillian; Mornet, Francoise; Boiron, Anne; Coupeau, Yann; Spitz, Jerome.
In the north-eastern Atlantic, meagre (Argyrosomus regius) is one of the largest fish living on the shelf and this species has important commercial interest. Over the past two decades, large variations in meagre abundance have been observed with pluri-annual cycles but the factors involved in such variations are still unclear. Trophic interactions between meagre and other species (both prey and competitors) might be one explanatory variable of the observed variations in meagre recruitment and abundance. In the present study, we described the diet of commercial-size meagre in the Bay of Biscay from stomach content and stable isotope analyses, and explored its dietary ontogeny. We found that commercial-size meagres were mostly piscivorous with a diet...
Tipo: Text Palavras-chave: Diet; SIAR; Ontogeny; Marine top predators; Sciaenidae.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00384/49531/50028.pdf
Registros recuperados: 25
Primeira ... 12 ... Última
 

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