Cytogenetic study of the parapatric contact zone between two 46-chromosomal forms of the common vole in European Russia

Cytogenetic study of the parapatric contact zone between two 46-chromosomal forms of the common... Since the first description of sympatric sibling species and allopatric chromosomal forms of the common vole (Microtus arvalis group) in 1969, the search of their range boundaries has been continually going on up to the present time. Based on the cytogenetic material presented in the present study, the geographical distribution of two karyoforms (2n = 46: NF = 84 and NF = 72) was examined in 20 geographic localities of European Russia (within the interval between the longitude 34°–56° East and latitude 51°–61° North). The places of findings of two karyoforms, “arvalis” and “obscurus”, in Russia have been supplemented and were shown to be significantly closer; whereas the well-known distribution boundaries for the “obscurus” form were specified in the northern and southern parts of Russia. A direct evidence of parapatric distribution and hybrid zone formation between the “arvalis” and “obscurus” karyoforms was obtained, which suggests the possibility of studying the evolutionary relationships between two genomes in the Russian part of the group range under the natural experimental conditions—the hybrid zone at the boundary between the “arvalis” and “obscurus”. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Cytogenetic study of the parapatric contact zone between two 46-chromosomal forms of the common vole in European Russia

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2010 by Pleiades Publishing, Ltd.
Subject
Biomedicine; Microbial Genetics and Genomics; Animal Genetics and Genomics; Human Genetics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795410040095
Publisher site
See Article on Publisher Site

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