Investigation of common carp (Cyprinus carpio) genetic diversity in Iranian waters of the Caspian Sea by microsatellite markers

Population genetic structure of common carp (Cyprinus carpio) were examined by 120 samples from Gilan، Mazandaran and Golestan coastal using 10 loci microsatellite. Eight of ten microsatellite loci were polymorphism. The mean of observed and effective allele number was 7. 08 and 4. 29 respectively and also the maximum of observed and expected heterozygosity was 0. 95 and 0. 92 respectively. It was seen that specimens from all regions and loci (exception locus Syp8) were not in Hardy-Weinberg Equibrium in all of the loci (P<0. 05). Based on Analysis of Molecular Variance (AMOVA)، the maximum FST (0. 028) and minimum Nm (3. 7) was between Golestan and Mazandaran. Also، the minimum FST and maximum Nm was between Gilan and Mazandaran. Highest genetic distance was between Golestan and Mazandaran (0. 084) and lowest genetic distance was 0. 33. As result، there is a significant genetic divergence between some of samples (P<0. 01). Therefore، there are at least three genetic group of Cyprinus carpio in Southern part of the Caspian Sea.