Open Access

ARTICLE

Morphological study of the spermatogenesis in the teleost Piaractus mesopotamicus

by CARMINDA DA CRUZ-LANDIM*, FÁBIO CAMARGO ABDALLA*, MARIA ALICE DA CRUZ-HÖFLING**

* Departamento de Biologia, Instituto de Biociências, Universidade Estadual Paulista (UNESP), Rio Claro, SP, Brazil.
** Departamento de Histologia e Embriologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil.
Address correspondence to: Dra. Carmida Da Cruz Landim. Departamento de Biologia, Instituto de Biociências, Universidade Estadual Paulista (UNESP). Avenida 24A, no. 1515, CEP 13506900, Bela Vista, Rio Claro, SP, BRAZIL. Fax: (55-19) 534-0009; E-mail: cclandim@rc.unesp.br

BIOCELL 2003, 27(3), 319-328. https://doi.org/10.32604/biocell.2003.27.319

Abstract

The spermatogenesis of Piaractus mesopotamicus was investigated under light and transmission electron microscopy. The specimens were captured from their natural environment (Rio Miranda and Rio Aquidauana, Pantanal Matogrossense, Brazil) during April and September. The results were compared with the spermatogenic data of specimens under captivity condition. In both conditions, P. mesopotamicus presented the typical spermatogenesis pattern of the teleost fishes, showing no significative differences. The spermatozoon was classified as type I, which has a globular head without acrosome, a short middle piece and a long tail constituted only by the flagellum. This type of spermatozoon is considered the basic type in fishes.

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