Genetic Variation and Differentiation in Mexican Populations of Common Bush-Tanagers and Chestnut-Capped Brush-Finches

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Issue Date
1992-02-01Author
Peterson, A. Townsend
Escalante P., Patricia
Navarro-Sigüenza, Adolfo G.
Publisher
University of California Press
Type
Article
Article Version
Scholarly/refereed, publisher version
Metadata
Show full item recordAbstract
Genetic differentiation among four Mexican populations each of Common Bush-tanagers (Chlorospingus ophthalmicus) and Chestnut-capped Brush-finches (Atlapetes brunneinucha) was evaluated using allozyme electrophoresis. In both species, although levels of within-population variation are moderate, among-population variation is extreme, including fixed differences among populations. Genetic variation is significantly reduced in some populations on the smallest habitat islands. Differentiation is apparently unrelated to geographic distance among populations, and effects of habitat island size and isolation on genetic differentiation are not clear. Populations of the Sierra de los Tuxtlas in Veracruz, however, are strongly differentiated in both species.
ISSN
0010-5422Collections
Citation
Peterson, A. Townsend; Escalante P., Patricia; Navarro S., Adolfo. (1992). "Genetic Variation and Differentiation in Mexican Populations of Common Bush-Tanagers and Chestnut-Capped Brush-Finches." Condor, 94(1):242-251. http://www.dx.doi.org/10.2307/1368813.
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