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

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• 作者：Utku Perktaş ; A. Townsend Peterson ; Dale Dyer
• 关键词：Population genetics ; Isolation by distance ; Mitochondrial DNA ; Maghreb ; Fringilla coelebs ; Fringilla coelebs harterti
• 刊名：Journal of Ornithology
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：158
• 期：1
• 页码：1-13
• 全文大小：
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Zoology; Ecology; Fish & Wildlife Biology & Management;
• 出版者：Springer Berlin Heidelberg
• ISSN：2193-7206
• 卷排序：158

文摘

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.