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KMID : 0381120080300030181
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Genes and Genomics
2008 Volume.30 No. 3 p.181 ~ p.190
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Mitochondrial DNA Diversification and Phylogeny among Subspecies of Chukar Partridge (Alectoris chukar ), Phasianidae
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Huang Zuhao
Liu Naifa
Zhang Lixun
Xiao Yian
Jin Long
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Abstract
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The taxonomic status of the subspecies Alectoris chukar remains unclear since 1830. To obtain more information on phylogenetic relationships within the species, the entire mitochondrial DNA (mtDNA) control-region sequences of eleven subspecies were analyzed to construct the phylogenetic tree among the subspecies of chukar partridge. There was a significant genetic differentiation among the subspecies with little gene flow. The phylogenetic tree grouped all the eleven subspecies into a monophyletic cluster, which included two deeply divergent phylogroups. Haplotype network was observed within A. chukar, and gene flow estimates suggest isolation among the subspecies. Our data confirmed a locality of origin (central Asia) for chukar partridge, and have clarified the relationships among the subspecies. A conventional calibration of mtDNA sequence divergence indicated an early to middle Pleistocene evolution of the main clades in A. chukar, which could have diversified in allopatry in the lowland of continental Asia. Cyclic changes in Pleistocene climate and landscape might result in subspecific divergence of chukar partridge.
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KEYWORD
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Alectoris chukar, subspecies, phylogeny, mitochondrial DNA control-region
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