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Revista Brasileira de Zoologia

Print version ISSN 0101-8175

Rev. Bras. Zool. vol.12 no.1 Curitiba  1995

http://dx.doi.org/10.1590/S0101-81751995000100021 

Estudo ultraestrutural da espermatogênese de Donax striatus Linnaeus (Mollusca, Bivalvia) do litoral norte do Brasil

 

Ultrastructural study of the spermatogenesis of Donax striatus Linnaeus (Mollusca, Bivalvia) from Brazil northern litoral

 

 

E. MatosI; P. MatosII; L. CorralII; C. AzevedoIII

IDepartamento de Biologia Animal - Histologia e Embriologia, Faculdade de Ciências Agrárias do Pará, Av. Tancredo Neves, 66077-530 Belém, Pará, Brasil
IIDepartamento de Histologia e Embriologia, Universidade Federal do Pará, 66059-900 Belém, Pará, Brasil
IIIDepartamento do Biologia Celular, IMAR - Instituto do Mar, Universidade do Porto-Portugal, 4000 Porto, Portugal

 

 


ABSTRACT

The fine structure of the sperm and spermatogenesis of the Donax striatus are described. The morphology of the spermatozoa is classified as of a primitive type with a head, mid-piece with four mitochondria and tail. The head shows a complex acrosome, typical of heterodont bivalves. During spermatogenesis the nuclear chromatin shows granular condensation. The present paper describes detailed observations of the espermatozoa.

Key words: Ultrastructure, Spermatozoa, Mollusca Bivalvia


 

 

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Full text available only in PDF format.

 

 

AGRADECIMENTOS. A Profa Dra Yoko Wakabara da Universidade de São Paulo, pela identificação da espécie. Ao Sr. João Carvalheiro pelo serviço iconográfico. Trabalho parcialmente subsidiado pelo JNICT (Portugal), CNPq, UFPA e FCAP.

 

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Recebido em 19.IX.1994; aceito em 18.VI.1995.

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