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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/130685
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dc.contributor.authorVidotto-Magnoni, Ana Paula-
dc.contributor.authorCarvalho, Edmir Daniel-
dc.date.accessioned2014-05-27T11:23:54Z-
dc.date.accessioned2016-10-25T21:21:47Z-
dc.date.available2014-05-27T11:23:54Z-
dc.date.available2016-10-25T21:21:47Z-
dc.date.issued2009-05-11-
dc.identifierhttp://dx.doi.org/10.4025/actascibiolsci.v31i1.650-
dc.identifier.citationActa Scientiarum - Biological Sciences, v. 31, n. 1, p. 55-63, 2009.-
dc.identifier.issn1679-9283-
dc.identifier.issn1807-863X-
dc.identifier.urihttp://hdl.handle.net/11449/130685-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/130685-
dc.description.abstractThe aim of this study is to characterize some population biology parameters of P. squamosissimus, A. altiparanae and S. maculatus, the dominant fish species of the Santa Bárbara river, a tributary of the Nova Avanhandava reservoir, low Tietê river. Fish samplings were performed monthly between September/2002 and August/2003, using gill nets with different mesh sizes. Females of all species have larger standard lengths than males (Mann-Whitney, p < 0.0001), and are more frequent in superior size classes (Kolmogorov-Smirnov, p < 0.0001). All populations presented isometric growth, but differences between males and females were observed. Only P. squamosissimus presented a gender ratio different from 1:1, with a higher proportion of males (1:2, X2, p < 0.05). The onset of gonadal maturation occurs at 15 cm in P. squamosissimus, 9 cm in S. maculatus and at 8.9 cm in A. altiparanae. In all species populations, the adults predominate over juveniles. The allometric condition factor (K) of P. squamosissimus and S. maculatus presented higher values in the periods from March-May and June-August, and A. altiparanae in the period from March-May (Kruskal-Wallis, p < 0.05). These results indicate that the populations successfully exploit the lentic environment, and present life cycle tactics adapted to their particular means of environment occupation.en
dc.format.extent55-63-
dc.language.isoeng-
dc.sourceScopus-
dc.subjectAstyanax altiparanae-
dc.subjectPlagioscion squamosissimus-
dc.subjectPopulation biology-
dc.subjectReservoir-
dc.subjectSerrasalmus maculatus-
dc.subjectTietê river-
dc.subjectAge distribution-
dc.subjectBody height-
dc.subjectBrazil-
dc.subjectControlled study-
dc.subjectFemale-
dc.subjectFish-
dc.subjectGonad development-
dc.subjectGrowth rate-
dc.subjectLife cycle assessment-
dc.subjectMale-
dc.subjectNonhuman-
dc.subjectPopulation abundance-
dc.subjectPopulation biology-
dc.subjectReservoir-
dc.subjectRiver-
dc.subjectSeasonal variation-
dc.subjectSex difference-
dc.subjectSex ratio-
dc.subjectSpecies comparison-
dc.subjectSpecies dominance-
dc.subjectWater supply-
dc.subjectSerrasalmus-
dc.titlePopularion biology of abdominant fish species of the Santa Bárbara river, a tributary of the Nova Avanhandava reservoir (low Tietê river, São Paulo State, Brazil)en
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationLaboratório de Biologia e Ecologia de Peixes Departamento de Morfologia Universidade Estadual Paulista, 18618-000 Botucatu, São Paulo-
dc.description.affiliationUnespLaboratório de Biologia e Ecologia de Peixes Departamento de Morfologia Universidade Estadual Paulista, 18618-000 Botucatu, São Paulo-
dc.identifier.doi10.4025/actascibiolsci.v31i1.650-
dc.rights.accessRightsAcesso aberto-
dc.identifier.file2-s2.0-65449122306.pdf-
dc.relation.ispartofActa Scientiarum: Biological Sciences-
dc.identifier.scopus2-s2.0-65449122306-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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