Distribution of two chromosome races of the common shrew (Sorex araneus L.) in the hybrid zone: Can a change of the dispersal mode maintain independent gene frequencies?

Combination of different dispersal modes may itself, without external obstacles, lead to the appearance of subdivided populations and maintain the existence of independent population systems. The common shrew, a mammal convenient for studying different levels of intraspecific differentiation, was th...

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Bibliographic Details
Published in:Russian journal of genetics 2008-06, Vol.44 (6), p.635-645
Main Authors: Shchipanov, N. A., Bulatova, N. Sh, Pavlova, S. V.
Format: Article
Language:English
Subjects:
Animal Genetics and Genomics
Biomedical and Life Sciences
Biomedicine
Human Genetics
Microbial Genetics and Genomics
Reviews and Theoretical Articles
Sorex araneus
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Summary:Combination of different dispersal modes may itself, without external obstacles, lead to the appearance of subdivided populations and maintain the existence of independent population systems. The common shrew, a mammal convenient for studying different levels of intraspecific differentiation, was the object of the study. Empirical data have been used for simulation taking into account the change of dispersal modes in the population area. The obtained results agree with empirical data on the distribution of races and hybrids in the hybrid zone of chromosome races Moscow and Seliger. Change of the dispersal mode may maintain independent population dynamics and, in the case of chromosome races, prevent the migration of parental individuals into the territory of the other race.
ISSN:1022-7954
1608-3369
DOI:10.1134/S1022795408060021