학술논문
Ultraestrutura da espermatogênese do tamoatá, Hoplosternum littorale (Hancock) (Teleostei, Callichthyidae) do rio Amazonas
Document Type
article
Author
Source
Revista Brasileira de Zoologia. January 1993 10(2)
Subject
Language
Portuguese
ISSN
0101-8175
Abstract
Sequential cytological modifications of Hoplosternum littorale (Hancock) spermatogenesis were studied with electron microscopy from the spermatocyte to the mature spermatozoon. Five stages of spermatical maturation were described. The spermatozoon is one of the primitive tupe, with head without acrosome and a tail with a type pattern.