Speciation in the Sorex araneus (Mammalia, Insectivora)

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Version: author
Serval ID
serval:BIB_8F269E811231
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Speciation in the Sorex araneus (Mammalia, Insectivora)
Journal
Acta Zoologica Fennica
Author(s)
Hausser J., Catzeflis F., Meylan A., Vogel P.
ISSN
0001-7299
Publication state
Published
Issued date
1985
Volume
170
Pages
125-130
Language
english
Abstract
The seven cytologically known species of the Sorex araneus complex each show a different karyotype. The three European species are genetically and morphologically very close, and mostly allopatric, thus having similar ecological requirements. It is suggested that chromosomic changes occasion a stasipatric speciation, the formation of chromosomic races in S. araneus being an illustration of this process. Neither small demes nor high inbreeding are likely in Sorex; thus the Robertsonian changes should spread out by meiotic drive alone, and the hybrids for a change should be almost fully fertile. Chromosomic speciation occurs when two incompatible metacentrics meet together. This model explains the separation between S. araneus and S. coronatus, but geographical isolation must have occured in the case of S. granarius, which keeps a primitive karyotype.
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24/01/2008 18:33
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20/08/2019 15:52
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