Population genetic structure of turbot (Scophthalmus maximus L., 1758) in the Black Sea
| Autor: | İlhan Aydin, Eyüp Çakmak, Rafet Cagri Ozturk, Şirin Firidin, Yahya Terzi, Ilyas Kutlu, Oğuzhan Eroğlu, Zehra Duygu Düzgüneş, Melike Alemdag |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Population Zoology Aquatic Science Biology 010603 evolutionary biology 01 natural sciences Genetic variation Animals Genetic variability education Ecology Evolution Behavior and Systematics Isolation by distance education.field_of_study 010604 marine biology & hydrobiology Genetic Variation biology.organism_classification Turbot Genes Mitochondrial Genetics Population Black Sea Genetic structure Flatfishes Microsatellite Mantel test Microsatellite Repeats |
| Zdroj: | Journal of fish biologyREFERENCES. 97(4) |
| ISSN: | 1095-8649 |
| Popis: | Turbot, Scophthalmus maximus, is a commercially important demersal flatfish species distributed throughout the Black Sea. Several studies performed locally with a limited number of specimens using both mitochondrial DNA (mtDNA) and microsatellite markers evidenced notable genetic variation among populations. However, comprehensive population genetic studies are required to help management of the species in the Black Sea. In the present study eight microsatellite loci were used to resolve the population structure of 414 turbot samples collected from 12 sites across the Black Sea. Moreover, two mtDNA genes, COI and Cyt-b, were used for taxonomic identification. Microsatellite markers of Smax-04 and B12-I GT14 were excluded from analysis due to scoring issues. Data analysis was performed with the remaining six loci. Loci were highly polymorphic (average of 17.8 alleles per locus), indicating high genetic variability. Locus 3/20CA17, with high null allele frequency (>30%), significantly deviated from HW equilibrium. Pairwise comparison of the FST index showed significant differences between most of the surveyed sampling sites (P < 0.01). Cluster analysis evidenced the presence of three genetic groups among sampling sites. Significant genetic differentiation between Northern (Sea of Azov and Crimea) and Southern (Turkish Black Sea Coast) Black Sea sampling sites were detected. The Mantel test supported an isolation by distance model of population structure. These findings are vital for long-term sustainable management of the species and development of conservation programs. Moreover, generated mtDNA sequences would be useful for the establishment of a database for S. maximus. |
| Databáze: | OpenAIRE |
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