Mudanças ontogenéticas na dieta de Oreochromis niloticus and Tilapia rendalli da represa de Barra Bonita (rio Tietê, Estado de São Paulo, Brasil)

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dc.contributor.authorZaganini, Rosângela Lopes [UNESP]
dc.contributor.authorVidotto-Magnoni, Ana Paula [UNESP]
dc.contributor.authorCarvalho, Edmir Daniel [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:26:52Z
dc.date.available2014-05-27T11:26:52Z
dc.date.issued2012-07-11
dc.description.abstractThe Nile Tilapia, Oreochromis niloticus, and the Congo Tilapia, Tilapia rendalli, are important members of the African cichlids, and have been introduced to many Brazilian lakes and reservoirs. These species exhibit a large feeding flexibility and may modify their habits during their growth. In the Barra Bonita reservoir, these species are well adapted, representing more than 80% of fish. This study aimed to analyze ontogenetic variation with regard to the diet of these species in this important reservoir. Samples were taken monthly, from March 2007 to February 2008, in Anhembi, São Paulo State. Both species were analyzed by grouping individuals according to size classes. The coexistence of these species was observed in this environment, to which fish were introduced, as well as discreet differences in diet, being that Oreochromis niloticus was considered as an detritivorous, since the detritus was constant in the diet of almost all size classes, and presents some changes in its diet according to the different size classes. While T. rendalli may was defined as herbivorous, and the contribution of food resources to the diet of T. rendalli seems to be different from that of O. niloticus along the size classes.en
dc.description.affiliationDepartamento de Morfologia Laboratório de Biologia e Ecologia de Peixes Instituto de Biociências, Universidade Estadual Paulista 'Júlio de Mesquita Filho', Distrito de Rubião Junior, s/n, Cx. Postal 510, 18618-970, Botucatu, São Paulo
dc.description.affiliationUnespDepartamento de Morfologia Laboratório de Biologia e Ecologia de Peixes Instituto de Biociências, Universidade Estadual Paulista 'Júlio de Mesquita Filho', Distrito de Rubião Junior, s/n, Cx. Postal 510, 18618-970, Botucatu, São Paulo
dc.format.extent255-262
dc.identifierhttp://dx.doi.org/10.4025/actascibiolsci.v34i3.9971
dc.identifier.citationActa Scientiarum - Biological Sciences, v. 34, n. 3, p. 255-262, 2012.
dc.identifier.doi10.4025/actascibiolsci.v34i3.9971
dc.identifier.file2-s2.0-84863551684.pdf
dc.identifier.issn1679-9283
dc.identifier.issn1807-863X
dc.identifier.scopus2-s2.0-84863551684
dc.identifier.urihttp://hdl.handle.net/11449/73432
dc.language.isoeng
dc.language.isopor
dc.relation.ispartofActa Scientiarum: Biological Sciences
dc.relation.ispartofsjr0,208
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectCichlids
dc.subjectCoexistence
dc.subjectDam
dc.subjectFish feeding
dc.subjectParaná river basin
dc.subjectadult animal
dc.subjectanimal behavior
dc.subjectBrazil
dc.subjectcontrolled study
dc.subjectecological niche
dc.subjectfeeding behavior
dc.subjectfeeding ecology
dc.subjectgeographical variation (species)
dc.subjectinterspecific competition
dc.subjectjuvenile animal
dc.subjectnonhuman
dc.subjectOreochromis niloticus
dc.subjectreservoir
dc.subjectspecies coexistence
dc.subjectspecies comparison
dc.subjectspecies difference
dc.subjectTilapia
dc.subjectTilapia rendali
dc.subjectAfrican cichlids
dc.subjectCichlidae
dc.subjectTilapia rendalli
dc.titleMudanças ontogenéticas na dieta de Oreochromis niloticus and Tilapia rendalli da represa de Barra Bonita (rio Tietê, Estado de São Paulo, Brasil)pt
dc.title.alternativeOntogenetic diet shifts of Oreochromis niloticus and Tilapia rendalli of the Barra Bonita reservoir (Tietê river, São Paulo State, Brazil)en
dc.typeArtigo
dcterms.licensehttp://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/about
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt

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