Meso and microhabitat analysis and feeding habits of small nektonic characins (Teleostei: Characiformes) in Neotropical streams

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dc.contributor.authorCeneviva-Bastos, Mônica [UNESP]
dc.contributor.authorCasatti, Lilian [UNESP]
dc.contributor.authorRossa-Feres, Denise Cerqueira [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:09:10Z
dc.date.available2014-05-20T15:09:10Z
dc.date.issued2010-04-01
dc.description.abstractThe habitat use and feeding habits of a set of nektonic fish species often found in small low-gradient streams in Brazil were investigated. The core species in the present study was Knodus moenkhausii (Eigenmann & Kennedy, 1903), the most abundant of five species in the nektonic guild. Records of the species in 22 streams indicate that K. moenkhausii is associated, on a mesohabitat scale, with runs, and on a microhabitat scale, with sandy bottoms, intermediate depth, and open sites without coverage or submerged vegetation. During snorkeling observations, two additional nektonic registered species showed spatial segregation from K. moenkhausii with respect to foraging microhabitats. Feeding habits of the observed nektonic species were significantly correlated with riparian vegetation. The six species studied appear to use different resources, as suggested by a non-metric ordination of diet, and sites with characteristic riparian vegetation. The studied species may be considered generalists with a tendency to insectivory, with K. moenkhausii feeding on the widest variety of resources. Such opportunism explains its ability to successfully occupy instream habitats with low complexity.en
dc.description.affiliationUniversidade Estadual Paulista Departamento de Zoologia e Botânica
dc.description.affiliationUnespUniversidade Estadual Paulista Departamento de Zoologia e Botânica
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent191-200
dc.identifierhttp://dx.doi.org/10.1590/S1984-46702010000200006
dc.identifier.citationZoologia (Curitiba). Sociedade Brasileira de Zoologia, v. 27, n. 2, p. 191-200, 2010.
dc.identifier.doi10.1590/S1984-46702010000200006
dc.identifier.fileS1984-46702010000200006.pdf
dc.identifier.issn1984-4670
dc.identifier.lattes8041011456158217
dc.identifier.scieloS1984-46702010000200006
dc.identifier.urihttp://hdl.handle.net/11449/27128
dc.language.isoeng
dc.publisherSociedade Brasileira de Zoologia
dc.relation.ispartofZoologia (Curitiba)
dc.relation.ispartofsjr0,405
dc.rights.accessRightsAcesso aberto
dc.sourceSciELO
dc.subjectCharacidaeen
dc.subjecthabitat useen
dc.subjectresourcesen
dc.subjectUpper Paranáen
dc.titleMeso and microhabitat analysis and feeding habits of small nektonic characins (Teleostei: Characiformes) in Neotropical streamsen
dc.typeArtigo
unesp.author.lattes8041011456158217
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências Letras e Ciências Exatas, São José do Rio Pretopt

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Artigos - Zoologia e Botânica - IBILCE