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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Reproduction of Oligosarcus hepsetus (Cuvier, 1829) (Characiforms) in the Serra do Mar State Park, São Paulo, Brazil

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Author(s):
LM. Gomiero [1] ; L. Garuana [2] ; FMS. Braga [3]
Total Authors: 3
Affiliation:
[1] Universidade Estadual Paulista. Instituto de Biociências. Departamento de Zoologia - Brasil
[2] Universidade Estadual Paulista. Instituto de Biociências. Departamento de Zoologia - Brasil
[3] Universidade Estadual Paulista. Instituto de Biociências. Departamento de Zoologia - Brasil
Total Affiliations: 3
Document type: Journal article
Source: Brazilian Journal of Biology; v. 68, n. 1, p. 187-192, 2008-02-00.
Abstract

The purpose of this study was to characterize the reproduction of Oligosarcus hepsetus in the Grande river (Santa Virginia Unit - Serra do Mar State Park) based on the reproductive period, length of first gonadal maturation for both sexes, sexual proportion, oocyte development, type of spawn and fecundity. The Grande river was sampled monthly from January through December 2004. The numerical frequency of the stages of maturity and the volumetric method were utilized to determine the reproductive period and fecundity, respectively. The reproduction of Oligosarcus hepsetus was characterized by a long period, relatively low fecundity, precocious length of first gonadal maturation and parceled spawning. (AU)