Effect of isolation on the genetic characteristics of populations in charrs of the genus Salvelinus

To study the effect of isolation on the genetic variation of mDNA, Salvelinus malma krascheninnikovi and S. malma malma nonanadromous populations from different model ecosystems were examined by RFLI-PCR. The haplotype and nucleotide diversities of mtDNA were significantly decreased in three isolated populations as a result of random gene drift. The genealogy of mtDNA haplotypes was reconstructed. The formation of the modern structure of the isolated populations is discussed in terms of phylogeography.