Seasonal Changes In The Histological Profile Of The Ovary Of Mytilus Galloprovincialis
Lamarck, 1819.
The purpose of this study is to examine the seasonal changes of the histological profile of the Mytilus galloprovincialis Lamarck, 1819 at light microscopic level and to reveal the seasonal alterations of amount of total protein in the ovary by biochemical analyses. For this purpose the samples were monthly collected from designated areas in Yenikapi shores of Marmara Sea between June 2004-May 2005. The samples that have been collected were prepared for light microscopic examinations and stained by the histological stains. The photographs that have been taken from the prepared sections were interpreted by using histometric methods by image analyses software. For total protein analyze, Lowry method was used. Although reproductive activities of Mytilus galloprovincialis populations in these areas decreased in some months, it has been observed that reproduction activity has continued all the year.
The ovary grows symmetrically through the two sides of the dorsal region of visceral mass. In the ovary, there are growing oocytes and follicle cells at the inner wall of the acinus and vesicular connective tissue and adipogranüler tissue are present outside the acini.
Oogonia, previtellogenic, vitellogenic and postvitellogenic oocytes were observed during the oogenesis process. Previtellogenic oocytes, vitellogenic oocytes and post vitellogenic oocytes frequencies calculated to reveal reproductive cycle in the annual cycle. Monthly total protein amount and water temperature were measured at the area that specimens have been collected.
As a result, while reproductive cycle of Mytilus galloprovincialis was continuing in the annual cycle, total protein amount of the ovary was not changed significantly. The annual temperature alterations that have been measured, were not much effective on the reproductive cycle.
KILIÇ Önder ,
Danışman : Prof. Dr. Yavuz ÇOTUK
Anabilim Dalı : Biyoloji
Programı : Genel Biyoloji
Mezuniyet Yılı : 2006
Tez Savunma Jürisi : Prof. Dr. Yavuz ÇOTUK (Danışman)
Prof. Dr. Tulay ENGİZEK
Prof. Dr. Ali GİRGİN
Prof. Dr. Seyhan ALTUN
Prof. Dr. Tuncay ORTA
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