Novel insights on demographic history of tribal and caste groups from West Maharashtra (India) using genome-wide data

Debortoli, GuilhermeDepartment of Anthropology, University of Toronto at Mississauga, Mississauga, ON, Canada (författare)

The South Asian subcontinent is characterized by a complex history of human migrations and population interactions. In this study, we used genome-wide data to provide novel insights on the demographic history and population relationships of six Indo-European populations from the Indian State of West Maharashtra. The samples correspond to two castes (Deshastha Brahmins and Kunbi Marathas) and four tribal groups (Kokana, Warli, Bhil and Pawara). We show that tribal groups have had much smaller effective population sizes than castes, and that genetic drift has had a higher impact in tribal populations. We also show clear affinities between the Bhil and Pawara tribes, and to a lesser extent, between the Warli and Kokana tribes. Our comparisons with available modern and ancient DNA datasets from South Asia indicate that the Brahmin caste has higher Ancient Iranian and Steppe pastoralist contributions than the Kunbi Marathas caste. Additionally, in contrast to the two castes, tribal groups have very high Ancient Ancestral South Indian (AASI) contributions. Indo-European tribal groups tend to have higher Steppe contributions than Dravidian tribal groups, providing further support for the hypothesis that Steppe pastoralists were the source of Indo-European languages in South Asia, as well as Europe.

Abbatangelo, CristinaDepartment of Anthropology, University of Toronto at Mississauga, Mississauga, ON, Canada (författare)
Ceballos, FranciscoDepartment of Biological Sciences, Middle East Technical University, Çankaya, Turkey (författare)
Fortes-Lima, CesarUppsala universitet,Människans evolution,Human Evolution(Swepub:uu)cesfo882 (författare)
Norton, Heather L.Department of Anthropology, University of Cincinnati, Cincinnati, OH, USA (författare)
Ozarkar, ShantanuDepartment of Anthropology, Savitribai Phule Pune University, Pune, India (författare)
Parra, Esteban J.Department of Anthropology, University of Toronto at Mississauga, Mississauga, ON, Canada (författare)
Jonnalagadda, ManjariSymbiosis School for Liberal Arts, Symbiosis International (Deemed University), Pune, India (författare)
Department of Anthropology, University of Toronto at Mississauga, Mississauga, ON, CanadaDepartment of Biological Sciences, Middle East Technical University, Çankaya, Turkey (creator_code:org_t)

Ingår i:Scientific Reports: Springer Science and Business Media LLC10:12045-2322

Av författaren/redakt...: Debortoli, Guilh ...; Abbatangelo, Cri ...; Ceballos, Franci ...; Fortes-Lima, Ces ...; Norton, Heather ...; Ozarkar, Shantan ...; visa fler...; Parra, Esteban J ...; Jonnalagadda, Ma ...; visa färre...

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