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  Evidence of Austronesian genetic lineages in East Africa and South Arabia: Complex dispersal from Madagascar and Southeast Asia

Brucato, N., Fernandes, V., Kusuma, P., Černý, V., Mulligan, C. J., Soares, P., et al. (2019). Evidence of Austronesian genetic lineages in East Africa and South Arabia: Complex dispersal from Madagascar and Southeast Asia. Genome Biology and Evolution, 11(3), 748-758. doi:10.1093/gbe/evz028.

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Brucato_Evidence_GenBiolEvo_2019.pdf (Publisher version), 579KB
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Brucato_Evidence_GenBiolEvo_2019.pdf
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2019
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© The Author(s) 2019. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please c ontact journals.permissions@oup.com

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 Creators:
Brucato, Nicolas, Author
Fernandes, Veronica, Author
Kusuma, Pradiptajati, Author
Černý, Viktor, Author
Mulligan, Connie J, Author
Soares, Pedro, Author
Rito, Teresa, Author
Besse, Céline, Author
Boland, Anne, Author
Deleuze, Jean-Francois, Author
Cox, Murray P, Author
Sudoyo, Herawati, Author
Stoneking, Mark1, Author                 
Pereira, Luisa, Author
Ricaut, François-Xavier, Author
Affiliations:
1Human Population History, Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Max Planck Society, ou_2074313              

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Free keywords: Madagascar; Austronesian; Polynesian motif; genome-wide data; mitochondrial DNA
 Abstract: The Austronesian dispersal across the Indonesian Ocean to Madagascar and the Comoros has been well documented, but in an unexplained anomaly, few to no traces have been found of the Austronesian expansion in East Africa or the Arabian Peninsula. To revisit this peculiarity, we surveyed the Western Indian Ocean rim populations to identify potential Austronesian genetic ancestry. We generated full mitochondrial DNA genomes and genome-wide genotyping data for these individuals and compared them with the Banjar, the Indonesian source population of the westward Austronesian dispersal. We find strong support for Asian genetic contributions to maternal lineages and autosomal variation in modern day Somalia and Yemen. Surprisingly, this input reveals two apparently different geographic origins and timings of admixture for the Austronesian contact; one at a very early phase (likely associated with the early Austronesian dispersals), and a later movement dating to the end of nineteenth century. These Austronesian gene flows come, respectively, from Madagascar and directly from an unidentified location in Island Southeast Asia. This result reveals a far more complex dynamic of Austronesian dispersals through the Western Indian Ocean than has previously been understood and suggests that Austronesian movements within the Indian Ocean may have been part of a lengthy process, probably continuing well into the modern era.

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Language(s): eng - English
 Dates: 2019-02-042019-03
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1093/gbe/evz028
 Degree: -

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Title: Genome Biology and Evolution
Source Genre: Journal
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Publ. Info: Oxford : Oxford Academic
Pages: - Volume / Issue: 11 (3) Sequence Number: - Start / End Page: 748 - 758 Identifier: ISSN: 1759-6653