Reproductive cycle of male matrinxa, Brycon cephalus
Braz. j. morphol. sci
; 17(2): 101-105, jul.-dez. 2000. ilus
Artigo
em Inglês
| LILACS
| ID: lil-313965
Biblioteca responsável:
BR734.1
RESUMO
The matrinxa (Brycon cephalus) is an abundant and economically important fish found in the Amazon river basin in Brazil. The seasonal morphological changes in the testes of this fish were studied. Captive-bred specimens were obtained from a breeding center between March 1994 and February 1996. The testes were classified as being of the tubular, unrestricted spermatogonial type, in which four phases of germ cells (spermatogonia, spermatocytes (primary as secondary), spermatids and spermatozoa) were identified. Based on the macro, and microscopic analyses of testes, and on the gonadosomatic index, four stages of germ cell development (resting, maturation, mature and regression) were identified.
Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Base de dados:
LILACS
Assunto principal:
Maturação do Esperma
/
Espermatozoides
Limite:
Animais
Idioma:
Inglês
Revista:
Braz. j. morphol. sci
Assunto da revista:
Anatomia
Ano de publicação:
2000
Tipo de documento:
Artigo
País de afiliação:
Brasil