Data/hora: 07/06/2024 00:33:09

Provedor de dados: | 104
País: | Brazil
Título: | Reproductive biology of Steindachnerina insculpta (Fernandez-Yépez) (Teleostei, Curimatidae) in Furnas reservoir, Minas Gerais, Brazil
Autores: | Ribeiro,Vinicius M. A.; Santos,Gilmar B.; Bazzoli,Nilo.
Data: | 2007-03-01
Ano: | 2007
Palavras-chave: | Freshwater teleost fish; Reproduction; Spawning.
Resumo: | The 'saguiru' Steindachnerina insculpta, a small teleost detritivorous fish species in Furnas reservoir, upper rio Paraná basin, Minas Gerais, Brazil, has a prolonged period of reproductive activity that extends from September to March, with fractionated spawning. During gonadal maturation, the females showed a low hepatosomatic index, suggesting that hepatic substances are possibly transferred from liver to ovaries. During the reproductive period, this fish had lower stomach repletion and coelomic fat indexes, indicating that the species eat less and consume more fat reserves. The weight of the ovaries influenced positively the condition factor (K1), since the lowest K2 values (without the gonads weight), were obtained during maturation, confirming the influence of the weight of the ovaries upon the physiological condition of the females.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000100009
Editor: | Sociedade Brasileira de Zoologia
Relação: | 10.1590/S0101-81752007000100009
Formato: | text/html
Fonte: | Revista Brasileira de Zoologia  v.24 n.1 2007
Fonte: | info:eu-repo/semantics/openAccess