Biology Bulletin

, 38:425

The microsatellite polymorphism and gene flow in the contact zone of four common shrew (Sorex araneus L., Mammalia) chromosome races

Authors

    • Severtsov Institute of Ecology and EvolutionRussian Academy of Sciences
  • A. G. Shestak
    • Severtsov Institute of Ecology and EvolutionRussian Academy of Sciences
  • S. G. Potapov
    • Severtsov Institute of Ecology and EvolutionRussian Academy of Sciences
  • Yu. M. Borisov
    • Severtsov Institute of Ecology and EvolutionRussian Academy of Sciences
  • S. Yu. Irkhin
    • Severtsov Institute of Ecology and EvolutionRussian Academy of Sciences
  • N. P. Korablev
    • Severtsov Institute of Ecology and EvolutionRussian Academy of Sciences
  • V. N. Orlov
    • Severtsov Institute of Ecology and EvolutionRussian Academy of Sciences
Theoretical and Evolutionary Biology

DOI: 10.1134/S1062359011050062

Cite this article as:
Grigoryeva, O.O., Shestak, A.G., Potapov, S.G. et al. Biol Bull Russ Acad Sci (2011) 38: 425. doi:10.1134/S1062359011050062
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Abstract

The variation of microsatellite loci in 130 individuals of four common shrew chromosome races (Moscow, Western Dvina, Seliger, and St. Petersburg) contacting on the Valdai Hills was studied. A low level of genetic differences between the chromosome races, which differ at three-five fixed diagnostic metacentric chromosomes, was found. The genetic differentiation within the races is more considerable as compared with that between the races. A high deficiency in heterozygotes was recorded; presumably, this is connected with regular variation in the population sizes. It is assumed that the fixation of centric chromosome fusions was supported by selection (drive) in the evolution of the common shrew against the background of a neutral evolution of the microsatellite loci.

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© Pleiades Publishing, Ltd. 2011