Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/54500
Type: Artigo de periódico
Title: An ultrastructural study of spermiogenesis in three species of Physalaemus (Anura, Leptodactylidae)
Author: Amaral, MJLV
Fernandes, AP
Recco-Pimental, SM
Abstract: Ultrastructural aspects of spermiogenesis and testicular spermatozoa of three anuran amphibians, Physalaemus biligonigerus, P. fuscomaculatus and P. gracilis, were investigated by electron microscopy. The nuclei, middle pieces and tails of the three species were similar. In all cases, the nuclei were elongated and the acrosome consisted of a cone-shaped cap. The connecting pieces located in the flagellum implantation zone had transverse striations. The tails had a 9+2 axial filament pattern, a juxtaxonemal fiber and an undulating membrane. In contrast to other Leptodactylidae spermatozoa, no axial rod were observed in these Physalaemus species.
Subject: amphibia
Physalaemus biligonigerus
P-fuscomaculatus
P-gracilis
spermiogenesis
Country: Argentina
Editor: Inst Histol Embriol-conicet
Rights: aberto
Date Issue: 1999
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.