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Deciphering Past Human Population Movements in Oceania: Provably Optimal Trees of 127 mtDNA Genomes

Citation

Pierson, MJ and Martinez-Arias, R and Holland, BR and Gemmell, NJ and Hurles, ME and Penny, D, Deciphering Past Human Population Movements in Oceania: Provably Optimal Trees of 127 mtDNA Genomes, Molecular Biology and Evolution, 23, (10) pp. 1966-1975. ISSN 0737-4038 (2006) [Refereed Article]


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The definitive publisher-authenticated version is available online at: www.oxfordjournals.org

DOI: doi:10.1093/molbev/msl063

Abstract

The settlement of the many island groups of Remote Oceania occurred relatively late in prehistory, beginning approximately 3,000 years ago when people sailed eastwards into the Pacific from Near Oceania, where evidence of human settlement dates from as early as 40,000 years ago. Archeological and linguistic analyses have suggested the settlers of Remote Oceania had ancestry in Taiwan, as descendants of a proposed Neolithic expansion that began approximately 5,500 years ago. Other researchers have suggested that the settlers were descendants of peoples from Island Southeast Asia or the existing inhabitants of Near Oceania alone. To explore patterns of maternal descent in Oceania, we have assembled and analyzed a data set of 137 mitochondrial DNA (mtDNA) genomes from Oceania, Australia, Island Southeast Asia, and Taiwan that includes 19 sequences generated for this project. Using the MinMax Squeeze Approach (MMS), we report the consensus network of 165 most parsimonious trees for the Oceanic data set, increasing by many orders of magnitude the numbers of trees for which a provable minimal solution has been found. The new mtDNA sequences highlight the limitations of partial sequencing for assigning sequences to haplogroups and dating recent divergence events. The provably optimal trees found for the entire mtDNA sequences using the MMS method provide a reliable and robust framework for the interpretation of evolutionary relationships and confirm that the female settlers of Remote Oceania descended from both the existing inhabitants of Near Oceania and more recent migrants into the region.

Item Details

Item Type:Refereed Article
Keywords:human • mtDNA • Oceania • MMS • prehistory
Research Division:Mathematical Sciences
Research Group:Applied Mathematics
Research Field:Biological Mathematics
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Biological Sciences
Author:Holland, BR (Associate Professor Barbara Holland)
ID Code:62959
Year Published:2006
Web of Science® Times Cited:47
Deposited By:Mathematics
Deposited On:2010-03-31
Last Modified:2012-04-30
Downloads:0

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