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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/76643
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dc.contributor.authorBrandão, Heleno-
dc.contributor.authorNobile, André Batista-
dc.contributor.authorSouto, Ana Carolina-
dc.contributor.authorRamos, Igor Paiva-
dc.contributor.authorde Sousa, Jamile Queiroz-
dc.contributor.authorCarvalho, Edmir Daniel-
dc.date.accessioned2014-05-27T11:30:45Z-
dc.date.accessioned2016-10-25T18:54:28Z-
dc.date.available2014-05-27T11:30:45Z-
dc.date.available2016-10-25T18:54:28Z-
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.identifier.urihttp://acervodigital.unesp.br/handle/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.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.typeoutro-
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.file2-s2.0-84884483664.pdf-
dc.relation.ispartofBoletim do Instituto de Pesca-
dc.identifier.scopus2-s2.0-84884483664-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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