[Low level of variability of mitochondrial DNA in sea otter populations from Kamchatka and Komandor Islands].

Variation in populations of sea otter Enhydra lutris lutris from Komandor islands and Kamchatka was studied in segment b1-b2 of cytochrome b gene and in the control region (main noncoding region) of mitochondrial DNA (mtDNA) by means of restriction analysis. The total sample size was 59 animals. Polymorphism was recorded only in the control mtDNA region for one restriction endonuclease (MboI).