Journal of Human Genetics

, Volume 51, Issue 3, pp 217–226

Molecular insights into the origins of the Shompen, a declining population of the Nicobar archipelago

Authors

  • Rajni Trivedi
    • National DNA Analysis CentreCentral Forensic Science Laboratory
  • T. Sitalaximi
    • National DNA Analysis CentreCentral Forensic Science Laboratory
  • Jheelam Banerjee
    • National DNA Analysis CentreCentral Forensic Science Laboratory
  • Anamika Singh
    • National DNA Analysis CentreCentral Forensic Science Laboratory
  • P. K. Sircar
    • Andaman Adim Janjati Vikas Samiti, Government of India
    • National DNA Analysis CentreCentral Forensic Science Laboratory
Original Article

DOI: 10.1007/s10038-005-0349-2

Cite this article as:
Trivedi, R., Sitalaximi, T., Banerjee, J. et al. J Hum Genet (2006) 51: 217. doi:10.1007/s10038-005-0349-2

Abstract

The Shompen, one of the most isolated and poorly understood contemporary hunter–gatherer populations, inhabit Great Nicobar Island, the southernmost island of the Nicobar archipelago. Morphological imprints in the Shompen were interpreted to favour a mixed Indo-Chinese, Malay, Negrito and Dravidian origin. Analyses of the mitochondrial, Y-chromosomal and autosomal gene pool of contemporary Shompen have revealed low diversity, illustrating a founder effect in the island population. Mitochondrial sequence analyses revealed the presence of two haplogroups of R lineage: B5a, and a newly defined clade, R12. Y-chromosomal analyses demonstrated the occurrence of a single lineage found predominantly in Austro-Asiatic speakers across Asia. With the different types of genetic markers analysed, the Shompen exhibit varying levels of genetic relatedness with the Nicobarese, and Austro-Asiatic speakers of mainland India and Southeast Asia. These genetic analyses provide evidence that the Shompen, an offshoot of the Nicobarese, are descendants of Mesolithic hunter–gatherers of Southeast Asian origin, deriving from at least two source populations.

Keywords

NicobarShompenAustro-AsiaticMitochondrialY-chromosomalAutosomal

Copyright information

© The Japan Society of Human Genetics and Springer-Verlag 2006