Mitochondrial DNA and the Y chromosome suggest the settlement of Madagascar by Indonesian sea nomad populations.

BMC Genomics 2015 Mar 17;16:191. Epub 2015 Mar 17.

Laboratoire d'Anthropologie Moléculaire et Imagérie de Synthèse UMR-5288, Université de Toulouse, Toulouse, France.

Background: Linguistic, cultural and genetic characteristics of the Malagasy suggest that both Africans and Island Southeast Asians were involved in the colonization of Madagascar. Populations from the Indonesian archipelago played an especially important role because linguistic evidence suggests that the Malagasy language branches from the Southeast Barito language family of southern Borneo, Indonesia, with the closest language spoken today by the Ma'anyan. To test for a genetic link between Malagasy and these linguistically related Indonesian populations, we studied the Ma'anyan and other Indonesian ethnic groups (including the sea nomad Bajo) that, from their historical and linguistic contexts, may be modern descendants of the populations that helped enact the settlement of Madagascar.

Result: A combination of phylogeographic analysis of genetic distances, haplotype comparisons and inference of parental populations by linear optimization, using both maternal and paternal DNA lineages, suggests that Malagasy derive from multiple regional sources in Indonesia, with a focus on eastern Borneo, southern Sulawesi and the Lesser Sunda islands.

Conclusion: Settlement may have been mediated by ancient sea nomad movements because the linguistically closest population, Ma'anyan, has only subtle genetic connections to Malagasy, whereas genetic links with other sea nomads are more strongly supported. Our data hint at a more complex scenario for the Indonesian settlement of Madagascar than has previously been recognized.

Download full-text PDF

Source
http://dx.doi.org/10.1186/s12864-015-1394-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4373124PMC
March 2015
30 Reads

Publication Analysis

Top Keywords

sea nomad
12
settlement madagascar
8
suggests malagasy
8
populations
5
indonesian
5
genetic
5
malagasy
5
subtle genetic
4
borneo southern
4
genetic connections
4
indonesian ethnic
4
ethnic groups
4
ma'anyan subtle
4
population ma'anyan
4
linguistic contexts
4
closest population
4
historical linguistic
4
bajo historical
4
including sea
4
nomad bajo
4

Similar Publications