تاکسونومی و بیوسیستماتیک (Jun 2011)
Genetic diversity of Liza aurata (Risso, 1810) in the coastal regions of Golstan province, using microsatellite marker
Abstract
Golden grey mullet (Liza aurata) is a commercially valuable fish with great demand due to its delicious taste in southern coastal parts of the Caspian Sea. Genetic diversity of marine resources is of vital importance in their management and protection, as this is the first prerequisite for maintaining the consistency of populations in an inconsistent environmental conditions. In this study, we have used six microsatellite locations to investigate the level of genetic variation of Liza aurata in Gomishan and Miyankale regions in Golestan province. The results showed no conspicuous genetic variations in these two regions using Fst, Rst and AMOVA and accordingly a relatively high level of gene flow was found among the populations. Genetic variations in Gomishan (mean number of alleles per locus, Na=14.667, mean effective number of alleles, Ne=10.355, observed heterozygosity, Ho=0.905 and expected heterozygosity, He=0.894) and Miyankale (Na=15, Ne=10.223, Ho=0.863 and He=0.892) were not statistically different. There were evidences for genetic bottleneck in the populations. Protection and restoration of habitats can help to increase the population size and decrease risk of vulnerability of the species in the future.
