Aspectos da reprodução no gênero Characidium Reinhardt, 1867 (Crenuchidae, Characidiinae), na microbacia do Ribeirão Grande, serra da Mantiqueira, sudeste do Brasil

Carregando...
Imagem de Miniatura

Data

2006-10-01

Autores

De Souza Braga, Francisco Manoel [UNESP]

Título da Revista

ISSN da Revista

Título de Volume

Editor

Resumo

Aspects of the reproductive biology of Charaddium lauroi and C. alipioi were described. Maturation of the gonads was divided into four stages, and the distribution of the stages in an annual cycle was reported. The Charaddium lauroi has a higher spawning period in the spring, and the C. alipioi, in the summer. The size at sexual maturity of the Charaddium lauroi was about 4.2 cm total length for males and 5.1 cm for females; as for the C. alipioi, males were about 6.2 cm total length and females were about 5.8 cm. The gonadosomatic index values indicated the stage of maturity and were determined for each species and sex. The high values observed in October for Characidium lauroi males and females mark the maturation peaks in both sexes, and the peaks coincided with the spawning period. As for C. alipioi, the peaks were in February and also coincided with the spawning period.

Descrição

Palavras-chave

Characidium lauroi, Charaddium alipioi, Gonadosomatic index, Reproduction, animal experiment, Brazil, controlled study, female, fish, genus, gonad, male, nonhuman, sexual maturation, spawning, spring, summer, Characidiinae, Characidium, Crenuchidae

Como citar

Acta Scientiarum - Biological Sciences, v. 28, n. 4, p. 365-371, 2006.