[Chromosome numbers in native chars of Lake Kronozkoe]

Karyotypes of three endemic forms of charres from the Kronozkoe lake (longhead charr, nosed charr, and white charr) were studied (2n equals 78-82, NF equals 100; 2n equals 78-82, a species level while the other two forms are yet at the initial stages. All members of the genus Salvelinus from the Pacific Ocean constitute a single group. The ancestor of the group had been isolated from the ancestor of an artic charr before the beginning of the group divergence.