Data/hora: 01/06/2024 06:09:24

Provedor de dados: 	104	
País: 	Brazil	
Título: 	Reproductive biology of Moenkhausia intermedia (Eigenmann) (Pisces, Characiformes) in Itumbiara Reservoir, Goiás, Brazil	
Autores: 	Hojo,Renê Eiji Souza; Santos,Gilmar Bastos; Bazzoli,Nilo.	
Data: 	2004-09-01	
Ano: 	2004	
Palavras-chave: 	Gonads; Reproduction; Sexual dimorphism; Sexual maturation; Spawning.	
Resumo: 	To study the reproductive biology of Moenkhausia intermedia (Eigenmann, 1908) in Itumbiara reservoir, Paranaíba river, Goiás, Brazil, a total of 301 specimens (237 females and 64 males) were captured quaterly from January to December 1993. The gonadosomatic index of females and males were related to morphologic variations of the gonads in different reproductive cycle stages (RCS). Analysis of RCS frequency and variations in the gonadosomatic index showed that M. intermedia reproduces during the whole year with fractional spawning. The smallest standard length at advanced maturity stage was estimated as 6.6 cm for females and 6.0 cm for males. The stomach repletion and coelomic fat indexes of both sexes reached peak values in the rest stage, suggesting that this species probably store energy in this phase and consume its fat reserve during reproduction. In the Itumbiara reservoir there was female predominance (4:1). Males were smaller than females, indicating sexual dimorphism in M. intermedia.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000300015	
Editor: 	Sociedade Brasileira de Zoologia	
Relação: 	10.1590/S0101-81752004000300015	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Zoologia  v.21 n.3 2004	
Fonte: 	info:eu-repo/semantics/openAccess