Abstract
There are currently 25 recognized species of the chipmunk genus Tamias. In this study we sequenced the complete mitochondrial cytochrome b (cyt b) gene of 23 Tamias species. We analyzed the cyt b sequence and then analyzed a combined data set of cyt b along with a previous data set of cytochrome oxidase subunit II (COII) sequence. Maximum-likelihood was used to further test the fit of models of evolution to the cyt b data. Other sciurid cyt b sequence was added to examine the evolution of Tamias in the context of other sciurids. Relationships among Tamias species are discussed, particularly the possibility of a current sorting event among taxa of the southwestern United States and the extreme divergences among the three subgenera (Neotamias, Eutamias, and Tamias).
Copyright 2001 Academic Press.
Publication types
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Research Support, U.S. Gov't, Non-P.H.S.
MeSH terms
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Animals
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Cytochrome b Group / genetics*
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DNA / chemistry
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DNA / genetics
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DNA, Mitochondrial / genetics*
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Electron Transport Complex IV / genetics*
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Evolution, Molecular
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Molecular Sequence Data
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Phylogeny*
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Protein Subunits
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Sciuridae / classification
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Sciuridae / genetics*
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Sequence Analysis, DNA
Substances
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Cytochrome b Group
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DNA, Mitochondrial
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Protein Subunits
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DNA
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Electron Transport Complex IV
Associated data
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GENBANK/AF147629
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GENBANK/AF147630
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GENBANK/AF147631
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GENBANK/AF147632
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GENBANK/AF147633
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GENBANK/AF147634
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