**Acknowledgements**

We like to thank all the technical staff for help in sampling from the Fisheries Research Institute, Eğirdir-Isparta, and Professor Dr. F. Güler Ekmekçi, Professor Dr. Ali Serhan Tarkan and Professor Dr. Andrzej Witkowski for their support to provide literature and Professor Dr. Nadezhda A. Berezina and Assist. Prof. Dr. Arda Özen for English polishing.
