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dc.contributor.authorBrandão, Heleno [UNESP]
dc.contributor.authorNobile, André Batista [UNESP]
dc.contributor.authorSouto, Ana Carolina [UNESP]
dc.contributor.authorRamos, Igor Paiva
dc.contributor.authorde Sousa, Jamile Queiroz [UNESP]
dc.contributor.authorCarvalho, Edmir Daniel [UNESP]
dc.date.accessioned2014-05-27T11:30:45Z
dc.date.available2014-05-27T11:30:45Z
dc.date.issued2013-09-26
dc.identifierftp://ftp.sp.gov.br/ftppesca/39_2_157-167.pdf
dc.identifier.citationBoletim do Instituto de Pesca, v. 39, n. 2, p. 157-167, 2013.
dc.identifier.issn1678-2305
dc.identifier.issn0046-9939
dc.identifier.urihttp://hdl.handle.net/11449/76643
dc.description.abstractThe aim of the present study was to evaluate the diet and biological attributes of the population of Galeocharax knerii residing near net cage fish farming activities in the Chavantes reservoir (Paranapanema River, Brazil) to check their possible impacts. Samples were collected from two populations: one near the net cages (NC) and one from an area not influenced by these cages denominated the reference site (RS). Monthly sampling was carried out from March 2008 to February 2009. Fish were caught with a standardized effort using gill nets deployed for 14 hours. The alimentary index (AI) and degree of repletion (RD) were calculated to determine diet composition. Analyses of the sex ratio and the gonadosomatic index (GSI) were also performed. The calculations of AI revealed that fish wastes constituted the most frequent food item in the diet in both study areas (NC = 70.43; RS = 87.55), followed by the consumption of Apareiodon affinis (AI = 29.56), which was abundant near the NC, and prawn at the reference site (AI = 12.28). The sex ratio differed from 1:1 and mature individuals were only found in the population near the NC. The findings demonstrate that G. knerii indirectly benefits from the input of organic matter, using small fish as its main food resource. We conclude that the activities of fish farming influence diet and biological attributes of the species G. knerii, evidenced mainly by higher feeding activity, numerical abundance and biomass in the area of the cages.en
dc.format.extent157-167
dc.language.isoeng
dc.language.isopor
dc.relation.ispartofBoletim do Instituto de Pesca
dc.sourceScopus
dc.subjectCharacidae
dc.subjectFish
dc.subjectImpact of fish farming
dc.subjectTeleost
dc.titleInfluência de uma piscicultura em tanquesrede na dieta e atributos biológicos de Galeocharax knerii na represa de Chavantes, Brasilpt
dc.title.alternativeInfluence of cage fish farming on the diet and biological attributes of Galeocharax knerii in the Chavantes reservoir, Brazilen
dc.typeArtigo
dcterms.licensehttp://www.pesca.sp.gov.br/pagDreitosAut_Mod_oficio.php
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade Tecnológica Federal do Paraná - UTFPR
dc.description.affiliationLaboratório de Parasitologia de Animais Silvestres (LAPAS) Departamento de Parasitologia Instituto de Biociências de Botucatu - UNESP, Distrito de Rubião Júnior, s/n, CEP: 18.618-970, Botucatu SP
dc.description.affiliationLaboratório de Biologia e Ecologia de Peixes Departamento de Morfologia Instituto de Biociências de Botucatu - UNESP
dc.description.affiliationUniversidade Tecnológica Federal do Paraná - UTFPR, Estrada para Boa Esperança, km 04, CEP: 85.660-000, Dois Vizinhos, PR
dc.description.affiliationUnespLaboratório de Parasitologia de Animais Silvestres (LAPAS) Departamento de Parasitologia Instituto de Biociências de Botucatu - UNESP, Distrito de Rubião Júnior, s/n, CEP: 18.618-970, Botucatu SP
dc.description.affiliationUnespLaboratório de Biologia e Ecologia de Peixes Departamento de Morfologia Instituto de Biociências de Botucatu - UNESP
dc.identifier.wosWOS:000322795200006
dc.rights.accessRightsAcesso aberto
dc.identifier.scopus2-s2.0-84884483664
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Biociências, Botucatupt
dc.identifier.file2-s2.0-84884483664.pdf
unesp.author.orcid0000-0002-8502-6415[2]
unesp.author.orcid0000-0003-4525-6491[4]
dc.relation.ispartofjcr0.348
dc.relation.ispartofsjr0,220
dc.relation.ispartofsjr0,220
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