Short communication: Population genetic structure studies of Liza aurata based on mtDNA control region sequences analyses in the southern coasts of the Caspian Sea

摘要

Introduction Nowadays many species are endangered as a result of habitat loss. Decreases in population lead to reduced genetic diversity, which can cause survival crisis in a population (Cecconi et al., 1995). Nowadays optimal management of fish stocks needs information on population structure of species that is provided to researchers through genetic science. Bereavement of science about stock composition will lead to the fracture of fisheries management and unsuitable harvest of stocks (Papasotiropoulos et al., 2007). One of the beneficial methods to demonstrate genetic diversity is haplotype analysis of the D-loop region, an index which is very important and determinant for the preservation of species. Significant genetic variation is found in the D-loop region, even among individuals within a given species. Grey mullets are not endemic species of the Caspian Sea. Juveniles of L. aurata, L. saliens and Mugil cephallus were introduced from the Black Sea into the Caspian Sea during the years 1930-1934. But only the introduction of L. aurata and L. saliens was successful and they adapted well to the ecological conditions of the Caspian Sea (Fazli et al., 2008). Papasotiropoulos et al. (2007) used mt DNA sequences analysis to explore phylogenetic relationship among five species of the Mugilidae family. Furthermore Erguden et al., 2010 examined eight Mugilid species from the Mediterranean Sea and the Black Sea on the basis of the 16S r DNA.