Mitochondrial DNA D-Loop diversity and evolutionary relationship of wild Punjab Urial sheep (Ovis vignei punjabiensis) with closely related taxa

The taxonomy and systematics of wild sheep is complex with several classifications and revisions proposed on the basis of morphology, geographic distribution and chromosome number. Punjab Urial (O. vignei punjabiensis), an important sub-species of O. vignei is distributed in Pakistan and is classifi...

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Bibliographic Details
Published in:Small ruminant research 2017-03, Vol.148, p.22-32
Main Authors: Hussain, Tanveer, Pichler, Rudolf, Babar, Masroor Ellahi, Khan, Waseem Ahmad, Ullah, Zia, Shehzad, Samuel, Periasamy, Kathiravan
Format: Article
Language:English
Subjects:
Bayesian phylogeny
Evolutionary relationship
Moufloniforms
Principal components
Selective neutrality
Wild Punjab Urial sheep
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Summary:The taxonomy and systematics of wild sheep is complex with several classifications and revisions proposed on the basis of morphology, geographic distribution and chromosome number. Punjab Urial (O. vignei punjabiensis), an important sub-species of O. vignei is distributed in Pakistan and is classified under vulnerable category. The taxonomic status of this sub-species remains uncertain and the present study is an attempt to assess its mitochondrial DNA diversity and evolutionary relationship with closely related taxa. Analysis of mitochondrial DNA D-Loop of O. vignei punjabiensis revealed wide variations in the number and pattern of tandem repeats as compared to other Moufloniform wild sheep. With the exception of tandem repeat regions, a total of 117 sequences coveringan overlapping region of 748bp from nine wild and domestic sheep populations were analyzed. The nucleotide and haplotype diversity was low to moderate within different sheep populations and Punjab Urial sheep exhibiting a mean of 0.0043 and 0.829 respectively. The average pairwise differences within population varied from 0.67 (O. musimon) to 23.69 (Kachi) while the average differences between Urial sheep and other Moufloniform wild sheep populations was high indicating the distinctness of O. vignei. Bayesian and maximum likelihood phylogeny clearly established the divide between the lineages of O. vignei and O. orientalis populations. Also, the average pairwise differences between O. vignei bochariensis and O. vignei punjabiensis were significantly higher (P
ISSN:0921-4488
1879-0941
DOI:10.1016/j.smallrumres.2016.12.027