Reproduction of Pirapitinga do Sul (Brycon opalinus Cuvier, 1819) in the Parque Estadual da Serra do Mar-Núcleo Santa Virgínia, São Paulo, Brazil

Brazilian Journal of Biology

Lm. Gomiero¹  Fms. Braga¹ 

[1] ,Universidade Estadual Paulista Instituto de Biociências Departamento de ZoologiaRio Claro São Paulo ,Brazil

关键词: Brycon opalinus;    reproduction;    fecundity;    Brazil;    Brycon opalinus;    reprodução;    fecundidade;    Brasil;   

DOI  :  10.1590/S1519-69842007000300021

来源: SciELO

【 摘 要 】

The objective of the study was to characterize seasonally and locally the reproduction of Pirapitinga do Sul (Brycon opalinus). The study area included three rivers (Paraibuna, Ipiranga, and Grande) in the Santa Virgínia Unit of the Serra do Mar State Park, State of São Paulo, Brazil. Breeding occurred in spring, summer, and autumn. The L50 and the L100 of this species were 16 to 18 cm and 26 to 28 cm, respectively. Spawning was total, with synchronous development in two groups. The size of mature oocytes was 1,346.4 µm, reaching a maximum of 2,570.4 µm, with a mean fecundity of 9,190.5 oocytes. This species has external fertilization, is non-migratory, and lacks parental care of the young. Preservation of the Pirapitinga do Sul depends, in great part, on maintaining water quality, preservation of the riverine forests, and access to breeding areas.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License