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| Status |
Public on Dec 19, 2013 |
| Title |
Genome wide evidence of Austronesian-Bantu admixture and cultural reversion in a hunter-gatherer group of Madagascar |
| Organism |
Homo sapiens |
| Experiment type |
SNP genotyping by SNP array
Genome variation profiling by SNP array
|
| Summary |
Linguistic and cultural evidence suggests that Madagascar was the final point of two major dispersals of Austronesian and Bantu speaking populations. Today, Mikea are described as the last known Malagasy population reported to be still practising a hunter-gatherer life-style. It is unclear, however, whether Mikea descend from a remnant population that existed before the arrival of Austronesian and Bantu agriculturalists or whether it is only their life-style that separates them from the other contemporary populations of South Madagascar. In order to address these questions we have performed a genome wide analysis of >700,000 SNP markers on 21 Mikea, 24 Vezo and 24 Temoro individuals together with 50 individuals from Bajo and Lebbo populations from Indonesia. Our analyses of these data in the context of data available from other Southeast Asian and African populations reveal that all three Malagasy populations are derived from the same admixture event involving Austronesian and Bantu sources. In contrast to the fact that most of the vocabulary of the Malagasy speakers is derived from the Barito group of the Austronesian language family we observe that only one third of their genetic ancestry is related to the populations of Java-Kalimantan-Sulawesi area. Because no additional ancestry components distinctive to for the Mikea were found, it is likely that they have adopted their hunter-gatherer way of life by through cultural reversion.
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| Overall design |
69 samples were analysed with the Illumina platform OmniExpress BeadChips and are described herein.
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| Contributor(s) |
Pierron D, Razafindrazaka H, Pagani L, Ricaut F, Antao T, Capredon M, Sambo C, Radimilahy C, Rakotoarisoa J, Blench RM, Letellier T, Kivisild T |
| Citation(s) |
24395773 |
| |
| Submission date |
Dec 18, 2013 |
| Last update date |
Jun 10, 2020 |
| Contact name |
Luca Pagani |
| E-mail(s) |
lp.lucapagani@gmail.com
|
| Organization name |
University of Cambridge
|
| Department |
Biological Anthropology
|
| Lab |
Mega
|
| Street address |
Henry Wellcome Building, Fitzwilliam Street
|
| City |
Cambridge |
| State/province |
UK |
| ZIP/Postal code |
CB2 1QH |
| Country |
United Kingdom |
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| Platforms (1) |
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| Samples (69)
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| This SubSeries is part of SuperSeries: |
| GSE152200 |
Aborigines of Taiwan and their genetic relationship to East Asian and Pacific populations |
|
| Relations |
| BioProject |
PRJNA232031 |
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