Türkiye sularındaki Avrupa istiridyesi (Ostrea edulis L., 1758)’nin iki ayrı populasyonuna ait genetik varyasyon
Bu çalışmada, Çanakkale Boğazı ve İzmir Körfezinde bulunan istiridye populasyonlarında genetik varyasyonun belirlenmesi amaçlanmıştır. Bu amaçla nişasta jel elektroforezinden yararlanılmıştır. Her iki bölgeye ait istiridye populasyonları arasında Est, Mdh, Pgm ve Genel Protein (Prot) lokuslarındaki genetik benzerlik ve farklılıkların araştırılmıştır. İncelenen iki populasyonda da Mdh, Pgm ve Prot lokusları polimorfik, Est allozim lokusu ise monomorfik bulunmuştur. Ayrıca Pgm allozim sisteminde 2 lokus belirlenmiştir (Pgm-1 ve Pgm-2). İncelenen istiridye populasyonlarına ait heterozigotluk değerleri; Mdh, Pgm-1 Pgm-2 ve Prot için sırasıyla, 0.20, 0.58, 0.32 ve 0.55 bulunmuştur. Çalışmada İzmir ve Çanakkale istiridye populasyonları arasındaki genetik benzerlik değerleri Mdh, Pgm-1, Pgm-2 ve Prot lokusları için sırasıyla 1.000, 0.999, 0.996 ve 0.888 olarak bulunmuştur. Bu sonuçlara göre her iki populasyonun genetik olarak birbirine yakın olduğu gözlenmiştir.
Genetic variation of two European oyster (Ostrea edulis L., 1758) populations in Turkish Seas.
In this study, genetic variation of oyster populations in Çanakkale Strait and Gulf of Izmir was aimed to determine with starch gel electrophoresis. Genetic similarities between oyster populations from these two regions were examined by evaluating the expression of using Pgm, Mdh, Est and General Protein (Prot) loci. Separation of enzymes types in considered populations; Est was monomorphic; Mdh, Pgm and Prot were polymorphic. In addition, two loci were determined for Pgm enzyme system (Pgm-1 and Pgm-2). For both oyster populations; heterozygosity for Mdh, Pgm-1, Pgm-2 and Prot were found respectively 0.20, 0.58, 0.32 and 0.55. In the study, genetic similarity values between İzmir and Çanakkale populations by Mdh, Pgm-1, Pgm-2 and Prot loci were respectively 1.000, 0.999, 0.996 and 0.888. These results show that both populations are genetically close to each others.
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