Molecular Evolution in Baiomys (Rodentia: Sigmodontinae): Evidence for a Genetic Subdivision in B. musculus
The genus Baiomys contains 2 extant species, the northern B. taylori and the southern B. musculus. Mitochondrial DNA sequences from the cytochrome-b gene were used to assess genetic variation within and between the 2 species. Samples of B. taylori and B. musculus each formed 2 separate clades and di...
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Published in: | Journal of mammalogy Vol. 85; no. 1; pp. 162 - 166 |
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Main Authors: | , |
Format: | Journal Article |
Language: | English |
Published: |
01-02-2004
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Subjects: | |
Online Access: | Get full text |
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Summary: | The genus Baiomys contains 2 extant species, the northern B. taylori and the southern B. musculus. Mitochondrial DNA sequences from the cytochrome-b gene were used to assess genetic variation within and between the 2 species. Samples of B. taylori and B. musculus each formed 2 separate clades and differed by an average sequence divergence of 11.62%. Average sequence divergence between the 2 clades of B. taylori was minimal (2.82%), whereas the value between the 2 clades of B. musculus was greater (6.46%). The level of genetic divergence between the clades of B. musculus is comparable to values seen between other sister species of sigmodontine rodents. The Trans-Mexican Volcanic Belt, Sierre Madre del Sur, and Rio Balsas may separate populations of B. musculus into northwestern and southern clades. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0022-2372 1545-1542 |
DOI: | 10.1644/1545-1542(2004)085<0162:MEIBRS>2.0.CO;2 |