Genotyping-by-Sequencing Reveals the Impact of Restocking on Wild Common Carp Populations of the Southern Caspian Basin

Understanding the population structure and level of genetic diversity wild populations is fundamental for appropriate stock management species conservation. The common carp ( Cyprinus carpio ) one most important bony fish throughout Southern coastline Caspian Sea, but captures this have seen a dramatic reduction during last decade. As consequence, restocking program has been put in place to maintain C. populations, its impact not clear. In present study, basin was determined using 17,828 single-nucleotide polymorphism (SNP) markers. A total 117 individuals collected from four different locations southern farm were genotyped by genotyping-by-sequencing. overall Fst obtained 0.04, indicating low differentiation between attributed within variation (97%). values suggest that frequent migration events occur, three inferred study. However, each still showed distinct profile, which allowed distinguishing origin fish. This indicates ongoing maintaining differences some extent. Nonetheless, high inbreeding heterozygosity detected all suggesting additional conservation efforts are required protect coast Sea.