Nucleotide sequences of two (405- and 1050-bp) regions of mitochondrial DNA (mtDNA) cytochrome c gene were established in chars of the genus Salvelinus from Russian Far East and Siberia. Based on the divergence and phylogenetic analysis of nucleotide sequences of the mtDNA cytochrome b gene, S. laecomaenis was shown to carry the most ancient mitochondrial lineage, which is close to the ancestral one. The archaic mtDNA of S. levanidovi occupied an isolated position on the phylogenetic trees. The mtDNA lineage of the southern S. malma was close to the S. alpinus–S. malma malmacomplex group. Within the S. alpinus–S. m. malma complex, three groups of mtDNA types having particular geographic distributions were distinguished. The Kolyma–Chukotka group includes lake S. taranetzi, S. boganidae, andS. elgyticus from Chukotka, lake chars from Kolyma. The Okhotsk group is represented by northernS. malma, lake chars from northern Sea of Okhotsk, and anadromous S. taranetzi. The Siberian group is close to the Okhotsk one and consists of Taimyr and Baikal region chars as well as Arctic char from Finland. The divergence of char mitochondrial lineages was dated to the Pliocene–Pleistocene.
Russian Journal of Genetics – Springer Journals
Published: Oct 18, 2004
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