Document Detail

Genetic diversity of four filipino negrito populations from luzon: comparison of male and female effective population sizes and differential integration of immigrants into aeta and agta communities.
MedLine Citation:
PMID:  24297226     Owner:  NLM     Status:  In-Data-Review    
Genetic data corresponding to four negrito populations (two Aeta and two Agta; n = 120) from the Luzon region of the Philippines have been analyzed. These data comprise mitochondrial DNA (mtDNA) hypervariable segment 1 haplotypes and haplogroups, Y-chromosome haplogroups and short tandem repeats (STRs), autosomal STRs, and X-chromosome STRs. The genetic diversity and structure of the populations were investigated at a local, regional, and interregional level. We found a high level of autosomal differentiation, combined with no significant reduction in diversity, consistent with long-term settlement of the Luzon region by the ancestors of the Agta and Aeta followed by reduced gene flow between these two ethnolinguistic groups. Collectively, the Aeta have a much higher ratio of female:male effective population size than do the Agta, a finding that supports phylogenetic analysis of their mtDNA and Y-chromosome haplogroups, which suggests different genetic sex-biased contributions from putative Austronesian source populations. We propose that factors of social organization that led to the reduction in Agta female effective population size may also be linked to the limited incorporation of female lineages associated with the settlement of the Philippines by Austronesian speakers; conversely, the reduction in Aeta male effective population size, relative to females, could be indicative of a limited incorporation of male lineages associated with this demographic process.
E Heyer; M Georges; M Pachner; P Endicott
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Human biology     Volume:  85     ISSN:  1534-6617     ISO Abbreviation:  Hum. Biol.     Publication Date:  2013 Dec 
Date Detail:
Created Date:  2013-12-03     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0116717     Medline TA:  Hum Biol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  189-208     Citation Subset:  IM    
Copyright Information:
Copyright © 2013 Wayne State University Press, Detroit, Michigan 48201-1309.
UMR7206, EcoAnthropologie et Ethnobiologie, MNHN, CNRS, Université Paris Diderot, Paris, France.
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