关键词: 遗传变异, 线粒体DNA, 控制区, 分类, 松鼠, 韩国, 中国

Abstract: The full sequences(1 058 bp) of mitochondrial DNA（mtDNA）control region of the red squirrel from five localities in South Korea and two localities from northeast China（Sciurus vulgaris mantchuricus Thomas）were obtained and analyzed to determine the degree of sequence variation in the populations of two countries and to clarify the taxonomic status of the subspecies as well. The average Tamura-Nei nucleotide distance among 21 haplotypes from 39 Korean red squirrels and among another 21 haplotypes from 24 Chinese red squirrels were 1. 0% and 1. 4%，respectively. The sequences varied at 119 sites of 1 058 bp（11. 2%）. The average distance between the haplotypes of Korean red squirrel and Chinese red squirrel was 1. 3%. Moreover，all 42 haplotypes from 63 red squirrels from Korea and China formed a monophyletic clade，and the Fst value was 0. 04，indicating that genetic differentiation has not occurred between the two countries'red quirrels. It is concluded that this molecular result supports the present classification，i. e. ，the subspecies coreae from Korea is a synonym of the subspecies mantchuricus from northern China，although further molecular and morphological analyses with the specimens from North Korea and other areas of northeast China are necessary to confirm the taxonomic status of the subspecies mantchuricus.

Key words: Control region, Genetic variation, Korea and China, Mitochondrial DNA, Red squirrel(Sciurus vulgaris mantchuricus), Taxonomy