Abstract
Bluefish (Pomatomus saltatrix) is a commercially important, highly migratory predatory fish species distributed along the coasts of Türkiye. Conservation and sustainability of bluefish populations requires knowledge of the genetic structure of the population, but There are no genetic studies on bluefish in Türkiye. In this study, the population structure of Bluefish in the coastal regions of Türkiye was investigated by sequence analysis of mitochondrial DNA gene regions (Cytochrome b and Displacement-loop) and nuclear gene region (Rhodopsin). We tried to identify bluefish samples collected from 14 regions in the coastal region of Türkiye by analyzing two mtDNA gene sequences (Cyt b and D-loop) and nuclear gene region (Rhodopsin). While a total of 35 haplotypes were found in the Cytb gene region, a total of 132 haplotypes were found in the D-loop (control region) gene region. A single haplotype was detected in all stations for Rhodopsin. Also, the maximum likelihood trees based on Cyt b and D-loop sequences suggested relationship of Bluefish populations from Türkiye and the world. Results showed a low level of genetic differentiation between Bluefish populations in the study area, but Aegean and Mediterranean populations are more diverse than other populations due to migratory trait of this species.
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