Arunachal macaque evolves into two phylogenetic species after geographical isolation by Sela mountain pass
Authors/Creators
- 1. Zoological Survey of India
Description
Arunachal macaque (M. munzala) is an endangered and recently discovered cercopithecine primate from the Western Arunachal Pradesh, India. On genetic analyses with nuclear markers from a range-wide collected samples of Arunachal macaque, we observed two major clusters following the spatially explicit and non-explicit Bayesian and non-Bayesian clustering algorithms. The study captured 13 noble haplotypes at mitochondrial d loop region, which were found distributed following a strong geo-spatial structure with agreement to the nuclear STR markers. The study establishes Sela mountain pass is a zoo-geographic barrier, which splits Arunachal macaques about 1.96 mya into two phylogenetic species i.e. M. munzala and M. selaii, in the west and east side of Sela pass. We also propose the newly reported species, M. selaii is a species complex where a few conservation units are lumped. Further, the coalescent based Bayesian skyline plot analysis suggested a steady reduction in the effective population size of Arunachal macaques in Tawang and West Kameng during last 2000 years. The present range-wide phylogeographic study on Arunachal macaque warrants an immediate attention of biologists and conservation authorities to accord necessary taxonomic recognition of the proposed species of Arunachal macaque. This study set the stage for further elaborated genomic studies and taxonomic revision of Arunachal macaques, that will influence the ongoing conservation efforts, funding allocation for the conservation and management of Arunachal macaque at regional and global scale.
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