Gene Geographic Variation and Genetic Differentiation in the Root Vole Microtus oeconomus Pallas 1776 (Cricetidae, Rodentia) from the Kuril Islands

Author： Frisman L.V. Kartavtseva I.V. Kostenko V.A. Sheremetyeva I.N. Chernyavskii F.B.

Publisher： MAIK Nauka/Interperiodica

ISSN： 1022-7954

Source： Russian Journal of Genetics, Vol.39, Iss.10, 2003-10, pp. : 1152-1160

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Abstract

Electrophoretic analysis of 12 enzyme systems and 3 nonenzyme proteins (in all, 24 interpretable loci) was carried out for Microtus oeconomus from ten Kuril Islands, Kamchatka Peninsula, and the vicinity of the city of Magadan. Gene geographic variation was examined and the coefficients of genetic variation and differentiation were estimated. The interpopulation allozyme differentiation was low (D_{Nei, 1972} not higher than 0.053) and caused by variation in the allele frequencies of polymorphic loci. The greatest genetic distances were found between the populations belonging to different subspecies. Allozyme differentiation of Far Eastern M. oeconomus and M. fortis are discussed in relation to the data on the age of the island isolation and paleontological records. Karyological analysis (G-, C-, and NOR-banding) demonstrated the absence of differences between M. oeconomus from Kamchatka and the vicinity of Magadan.