Distribution and Parameters of Genetic Polymorphism of the Northern Red-Backed Vole (Clethrionomys rutilus) and the Bank Vole (Clethrionomys glareolus) in West Siberia
O. N. ZHIGILEVA, E. V. GORBACHEVA
Tyumen State University, 625003, Tyumen, Semakova str., 10
Keywords: Clethrionomys, Myodes, красная полевка, рыжая полевка, симпатрия, гибриды, мтДНК, генетическая изменчивость, northern red-backed vole, bank vole, sympatry, hybrids, mtDNA, genetic variability
Abstract
The article presents data on the genetic variability of the northern red-backed vole and the bank vole when inhabiting sympatrically in West Siberia. Two species of voles had comparable, relatively high indices of genetic variability of intermicrosatellite sequences of DNA. The proportion of polymorphic DNA markers was 95-98 %, Nei’s genetic diversity index - 0.33-0.35. In voles 47-58 % of allozyme loci were polymorphic, the average heterozygosity per locus was 0.058 in the northern red-backed vole, and 0.054 in the bank vole. Interpopulation differentiation in the red-backed vole ( FST = 0.293) was less compared to that in the bank vole ( FST = 0.475). Individuals of the hybrid line of the bank vole with mitochondrial haplotype of red-backed vole were found by the method of PCR-typing of cytochrome b gene fragment of mtDNA. The proportion of hybrid specimens ranged from 2 to 34 % in different regions. Indices of genetic variability in the hybrid line of the bank vole were lower than those of the parental species.
|
