SEASONAL CHANGES IN THE HISTOLOGICAL PROFILE OF THE OVARY OF MYTILUS GALLOPROVINCIALIS (BIVALVIA, MYTILIDAE) LAMARCK, 1819

Seasonal changes in the histological profile of the ovary of Mytilus galloprovincialis (Bivalvia, Mytilidae) Lamarck, 1819

Burak Kunduz, Melike Erkan

Istanbul University, Faculty of Science, Department of Biology, Vezneciler, 34134 Istanbul,TURKEY

Abstract

The seasonal changes in the histological profile of the ovary of Mytilus galloprovincialis Lamarck, 1819 were examined at light microscopic level and the alterations in the amount of total protein in the ovary were revealed by biochemical analyses. Samples were monthly collected from designated areas in Yenikapi shores of Sea of Marmara between June 2004 – May 2005. Although reproductive activities of Mytilus galloprovincialis populations in these areas decreased in some months, it has been observed that the reproduction activity has continued all the year round. The annual temperature alterations that have been measured were not much effective on the reproductive cycle.

Keywords: Mollusca, bivalvia, oogenesis, seasonal changes

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