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Gonadotropic Mitogenic Activity of the Optic Gland of the Cuttlefish, Sepia Officinalis, During Sexual Maturation

Published online by Cambridge University Press:  11 May 2009

N. Koueta
Affiliation:
Laboratoire de Biologie et Biotechnologies Marines, Université de Caen, 14032 Caen Cedex, France
E. Camou-Boucaud
Affiliation:
Laboratoire de Biologie et Biotechnologies Marines, Université de Caen, 14032 Caen Cedex, France
A.M. Renou
Affiliation:
Laboratoire de Biologie et Biotechnologies Marines, Université de Caen, 14032 Caen Cedex, France

Extract

A cytological study was carried out on the main cells of the optic gland of male and female Sepia officinalis L. during sexual maturation (animals collected in the field). The results were correlated with experimental data on the mitogenic action of optic gland extracts collected during a period of secretory activity.

The main cells of the optic gland show some of the features of protein-secreting cells, although they are not very pronounced. The secretory activity of the cell was found to be correlated with a peak of mitogenic activity occurring in September/October in the case of the males and in November in that of the females. The secretion of gonadotropic mitogenic factor varies throughout the sexual cycle of Sepia officinalis. This activity is correlated with a rapid multiplication of spermatocytes and spermatogonia in the males, whereas in the females it corresponds to previtellogenesis.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1995

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