[Restriction analysis of the mitochondrial genome of Salmonid fishes of the family Salmonidae].

Based on comparative restriction analysis of mitochondrial DNA, genetic divergence between 11 species belonging to four genera of the family Salmonidae was estimated. About 2% of the mitochondrial genome (304 np) was examined using 16 restrictases that recognize 6-nucleotide sites. Nucleotide difference estimates ranged from 0-5.17 +/- 1.07% in chars of the genus Salvelinus to 2.05 +/- 0.71%-8.64 +/- 1.14% in the Pacific salmon species of the genus Oncorhynchus. The greatest divergence was found between the genera Oncorhynchus and Parahucho (9.42 +/- 1.31%-13.08 +/- 1.24%), and between Oncorhynchus and Salvelinus (12.50 +/- 1.00%). The divergence between the Pacific salmon and trout species was equal to 8.17 +/- 1.17. The generic status of Parahucho and Parasalmo is confirmed.