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Ref ID: 26932
Ref Type: Journal Article
Authors: Corny, Julien
Galland, Manon
Arzarello, Marta
Bacon, Anne-Marie
Demeter, Fabrice
Grimaud-Hervé, Dominique
Higham, Charles
Matsumura, Hirofumi
Nguyen, Lan Cuong
Nguyen, Thi Kim Thuy
Nguyen, Viet
Oxenham, Mark
Sayavongkhamdy, Thongsa
Sémah
Title: Dental phenotypic shape variation supports a multiple dispersal model for anatomically modern humans in Southeast Asia
Date: 2017
Source: Journal of Human Evolution
DOI: https://doi.org/10.1016/j.jhevol.2017.08.017
Notes: Contributors also include François Sémah, Laura L. Shackelford, and Florent Détroit, cut off in Authors box
Abstract: The population history of anatomically modern humans (AMH) in Southeast Asia (SEA) is a highly debated topic. The impact of sea level variations related to the Last Glacial Maximum (LGM) and the Neolithic diffusion on past population dispersals are two key issues. We have investigated competing AMH dispersal hypotheses in SEA through the analysis of dental phenotype shape variation on the basis of very large archaeological samples employing two complementary approaches. We first explored the structure of between-and within-group shape variation of permanent human molar crowns. Second, we undertook a direct test of competing hypotheses through a modeling approach. Our results identify a significant LGM-mediated AMH expansion and a strong biological impact of the spread of Neolithic farmers into SEA during the Holocene. The present work thus favors a " multiple AMH dispersal " hypothesis for the population history of SEA, reconciling phenotypic and recent genomic data.
Date Created: 11/6/2017
Volume: 112
Page Start: 41
Page End: 56