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Article: Ultrastructure of spermatogenesis in the white clam Chione californiensis (Broderip, 1835) (Mollusca: Pelecypoda).
- Article from:
- Journal of Shellfish Research
- Article date:
- August 1, 2006
- Author:
CopyrightCOPYRIGHT 2006 National Shellfisheries Association, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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ABSTRACT Although studies of this species have focused on its reproductive cycle, there is no literature available on the ultrastructure of its germ cells. This study consequently aims to describe the latter cells as well as the shape of the acrosome, a character that may be of help in the taxonomic allocation of species of this family or other bivalve families. Results indicate spermatogonia have a central, spherical nucleus as well as scattered heterochromatin granules throughout the nucleoplasm. Rough endoplasmic reticulum is scarce, but the cytoplasm is rich in mitochondria and disperse glycogen granules. In primary spermatocytes, heterochromatin is more highly ...