Abstract
The intraspecific polymorphism of Sakhalin taimen Parahucho perryi (Brevoort, 1856), Salmonidae, was assessed via the RFLP analysis of mitochondrial DNA fragments that contain Cytb, the control region (D-loop), and the genes for the NADH dehydrogenase subunits 1-4, as well as the sequencing of the mitochondrial DNA COI gene. The statistically significant differentiation of the populations from the mainland coast of the Sea of Japan and the eastern and western coasts of Sakhalin Island was demonstrated. The higher level of haplotype diversity in Sakhalin populations compared to Primorye populations and the structure of haplotype genealogies suggested that all populations of Parahucho perryi originated from a common ancestor, which probably lived on the western coast of the Sakhalin Island.
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