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Spermatozoa and phylogenesis of the pectinid bivalve Flexopecten glaber

Published online by Cambridge University Press:  13 March 2006

Gaël Le Pennec ,
Nejla Aloui-Bejaoui  and
Marcel Le Pennec
Gaël Le Pennec
Affiliation:
UMR CNRS 6539, Institut Universitaire Européen de la Mer, 29280-Plouzané, France
Nejla Aloui-Bejaoui
Affiliation:
Institut National d'Agronomie, 43, Avenue Charles Nicolle, Tunis, Tunisia
Marcel Le Pennec
Affiliation:
UMR CNRS 6539, Institut Universitaire Européen de la Mer, 29280-Plouzané, France
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Abstract

Gonad of the Mediterranean pectinid Flexopecten glaber was studied in order to describe the morphology and the ultrastructural characteristics of the mature spermatozoa. The spermatozoon has a 2.5 μm pyriform head and a 40–45 μm flagellum. The four mitochondria of the mid-piece are 0.6 μm in diameter. The nucleus contains dense chromatin fibres and possesses two depressions: a wide (0.19 μm) and deep (0.58 μm) sub-acrosomal one, and the other at the base of the head, less deep (0.36 μm) and less wide (0.12 μm). The objective was to situate this scallop in the phylogenetic diagrams found in the literature concerning the commercial pectinid species.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 86 , Issue 2 , April 2006 , pp. 425 - 428
Copyright
2006 Marine Biological Association of the United Kingdom

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