Data/hora: 11/06/2024 02:14:10

Provedor de dados: | 52
País: | Brazil
Título: | Ovary maturation stages and oocyte features in three species of the neotropical fish Hemiodus (Müller, 1842)
Autores: | Brandão,Claudia Angelica da Silva; Valentim,Maria de Fátima Moraes; Caramaschi,Érica Pellegrini.
Data: | 2003-06-01
Ano: | 2003
Palavras-chave: | Hemiodontid; Oocyte development; Zona radiata; Fish reproduction; Tocantins River.
Resumo: | Macro- and microscopic ovarian features of Hemiodus microlepis, H. ternetzi and H. unimaculatus were analyzed. Based on these features we proposed an ovarian maturation scale. The nine stages of the preliminary macroscopic fieldwork scale were reduced to five after microscopic analysis of ovaries. The microscopic analysis indicated a group-synchronous oocyte development common to the three species that were characterized as iteroparous synchronous spawners with a total spawning type. The remarkable thickness of the zona radiata layer and the large size of vitellogenic oocytes of Hemiodus ternetzi distinguished this species from the others.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000300015
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132003000300015
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.46 n.3 2003
Fonte: | info:eu-repo/semantics/openAccess