PMID: 22567857May 10, 2012Paper

Narrow hybrid zone between Moscow and Western Dvina chromosomal races and specific features of population isolation in common shrew Sorex araneus (mammalia)

Genetika
V N OrlovV B Sycheva

Abstract

The contact zone between Moscow and Western Dvina chromosomal races of common shrew Sorex araneus L. at the south of the Valdai Hights was traced over a distance of 20 km. Within this, close to parapatric, contact zone of chromosomal races the width of sympatry zone was about 500 m (the narrowest among currently known hybrid zones), and the proportion of hybrids was 24.3%. It was shown that in bimodal hybrid zones between chromosomal races of common shrew the width of sympatry zones varied from 0.5 to 13 km. This width does not correlate with the cytogenetic features of the hybrids, and seems to be determined by competitive relations between the races. The hybrid proportion is determined by the type of hybrid heterozygosity, and decreased in the race sympatry zone from 33-40 to 21.5-25.2%. The decrease of the hybrid proportion can be associated with the abnormal fertility of either the first generation, or the backcross hybrids.

References

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Citations

Mar 1, 1990·Meditsinskaia tekhnika·M I GaĭdukI V Chernousova
Nov 26, 2008·Bulletin of Experimental Biology and Medicine·A A ChurinO V Pershina
Apr 17, 2010·Bulletin of Experimental Biology and Medicine·O L Voronova
Feb 13, 2007·Meditsinskaia tekhnika·O N Bodin, A V Kuz'min
Aug 27, 2013·Doklady Biological Sciences : Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections·V N OrlovA N Milishnikov
Aug 24, 2018·Molecular Ecology·Per Erik JordeLinda Laikre

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