Population genetic of Petroleuciscus esfahani (Teleostei: Cyprinidae) in Zayandeh Rood River, Iran

Population genetics of petroleuciscus esfahani in zayandeh rood river, iran were analysed using 120 samples of adult fish from four stations of the river cheshmeh dimeh (chd), khersoonak (kh), chamgordan (ch) and safaeye bridge (sb) and 5 pairs of microsatellite primers. all loci showed polymorphism. a total number of 54 alleles were recorded across loci ranging from 6 at cnab-030 to 17 at ca3. the mean number of alleles per populations ranged from 9.6 in chd to 8.6 in others. mean observed heterozygosity at the five loci detected ranged from 0.92 to 1.00 which showed high level of genetic diversity in each population. deviation from hardy-weinberg equilibrium was obvious in most combinations (locus × population), mainly due to heterozygosity excess. the lowest and highest genetic distances were calculated between chd-kh and chd-ch populations, respectively. the results showed low but significant fst values between each pair of the populations. this investigation represented at least four separate populations of p. esfahani in the river which showed the effects of river landscape fragmentation on population genetic structure of p. esfahani.