Integrating morphology, phylogeography, and ecological niche modeling to explore population differentiation in North African Common Chaffinches

Diagnosing distinct evolutionary taxa requires careful assessment of genetic, morphological, ecological, and behavioral variation within and among populations. In this study, data on phenotype (mensural and plumage coloration), genotype (mitochondrial DNA control-region sequences), and distributiona...

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Bibliographic Details
Published in:Journal of ornithology 2017, Vol.158 (1), p.1-13
Main Authors: Perktaş, Utku, Peterson, A. Townsend, Dyer, Dale
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Ecology
Evolution
Fish & Wildlife Biology & Management
Genetic diversity
Life Sciences
Original Article
Zoology
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Summary:Diagnosing distinct evolutionary taxa requires careful assessment of genetic, morphological, ecological, and behavioral variation within and among populations. In this study, data on phenotype (mensural and plumage coloration), genotype (mitochondrial DNA control-region sequences), and distributional projections derived from ecological niche models, were used to investigate population differentiation of North African Common Chaffinches. Results showed substantial genetic variation among populations, mostly (~56 %) distributed between Libyan populations and other North African populations, rather than within populations. Isolation-by-distance analysis indicated severely restricted gene flow between populations. Historical demographic analyses indicate that population expansion began before the Last Glacial Maximum, which is consistent with ecological niche model paleoprojections; interestingly, differentiation of the Libyan population ( Fringilla coelebs harterti ) apparently did not take place under the last glacial conditions. Hence, although its taxonomic status must await robust testing using multilocus DNA data, this population is an important element in the conservation of bird diversity in North Africa.
ISSN:2193-7192
2193-7206
DOI:10.1007/s10336-016-1361-3