Austronesian Issues
Follow
Find
31 views | +0 today
Austronesian Issues
Recent findings on Austronesian issues from Taiwan to ISEA, MSEA, and the Pacific
Curated by Frank Muyard
Your new post is loading...
Your new post is loading...
Scooped by Frank Muyard
Scoop.it!

Lapita colonised Tonga within two generations

Lapita colonised Tonga within two generations | Austronesian Issues | Scoop.it
It only took a generation or two for the first settlers of Polynesia to spread from their original colonisation site in Tonga, a new study has found.
more...
No comment yet.
Scooped by Frank Muyard
Scoop.it!

A twist in Austronesian origins

A twist in Austronesian origins | Austronesian Issues | Scoop.it

bioRxiv, doi: http://dx.doi.org/10.1101/005603

Reconstructing Austronesian population history in Island Southeast Asia

Mark Lipson et al.

Austronesian languages are spread across half the globe, from Easter Island to Madagascar. Evidence from linguistics and archaeology indicates that the "Austronesian expansion," which began 4-5 thousand years ago, likely had roots in Taiwan, but the ancestry of present-day Austronesian-speaking populations remains controversial. Here, focusing primarily on Island Southeast Asia, we analyze genome-wide data from 56 populations using new methods for tracing ancestral gene flow. We show that all sampled Austronesian groups harbor ancestry that is more closely related to aboriginal Taiwanese than to any present-day mainland population. Surprisingly, western Island Southeast Asian populations have also inherited ancestry from a source nested within the variation of present-day populations speaking Austro-Asiatic languages, which have historically been nearly exclusive to the mainland. Thus, either there was once a substantial Austro-Asiatic presence in Island Southeast Asia, or Austronesian speakers migrated to and through the mainland, admixing there before continuing to western Indonesia.

Frank Muyard's insight:

This new research could support views of R Blench (and others) of an AA peopling of western ISEA before AN expansion in the region from Taiwan/Eastern ISEA.

more...
No comment yet.
Scooped by Frank Muyard
Scoop.it!

600-year-old canoe found in New Zealand

600-year-old canoe found in New Zealand | Austronesian Issues | Scoop.it
Centuries before Captain Cook explored the South Pacific, Polynesian seafarers in canoes crossed vast swaths of water to colonize lonely islands from Samoa and New Zealand all the way to Hawaii.
Frank Muyard's insight:

More news about Polynesian sailing craft and ancient wind patterns in Austronesian voyaging in the Pacific Ocean.

PNAS articles here: http://www.pnas.org/content/early/2014/09/26/1408491111.abstract?sid=81e3a36d-69e2-4b51-905d-73bc42b8ff42

and here: http://www.pnas.org/content/early/2014/09/24/1408918111.abstract

more...
No comment yet.
Scooped by Frank Muyard
Scoop.it!

mtDNA history of Oceania (Duggan et al. 2014)

mtDNA history of Oceania (Duggan et al. 2014) | Austronesian Issues | Scoop.it
AJHG doi:10.1016/j.ajhg.2014.03.014
Maternal History of Oceania from Complete mtDNA Genomes: Contrasting Ancient Diversity with Recent Homogenization Due to the Austronesian Expansion
Ana T. Duggan et al.
Frank Muyard's insight:

Abstract:

mtDNA history of Oceania (Duggan et al. 2014) 

AJHG doi:10.1016/j.ajhg.2014.03.014

Maternal History of Oceania from Complete mtDNA Genomes: Contrasting Ancient Diversity with Recent Homogenization Due to the Austronesian Expansion

Ana T. Duggan et al.

Archaeology, linguistics, and existing genetic studies indicate that Oceania was settled by two major waves of migration. The first migration took place approximately 40 thousand years ago and these migrants, Papuans, colonized much of Near Oceania. Approximately 3.5 thousand years ago, a second expansion of Austronesian-speakers arrived in Near Oceania and the descendants of these people spread to the far corners of the Pacific, colonizing Remote Oceania. To assess the female contribution of these two human expansions to modern populations and to investigate the potential impact of other migrations, we obtained 1,331 whole mitochondrial genome sequences from 34 populations spanning both Near and Remote Oceania. Our results quantify the magnitude of the Austronesian expansion and demonstrate the homogenizing effect of this expansion on almost all studied populations. With regards to Papuan influence, autochthonous haplogroups support the hypothesis of a long history in Near Oceania, with some lineages suggesting a time depth of 60 thousand years, and offer insight into historical interpopulation dynamics. Santa Cruz, a population located in Remote Oceania, is an anomaly with extreme frequencies of autochthonous haplogroups of Near Oceanian origin; simulations to investigate whether this might reflect a pre-Austronesian versus Austronesian settlement of the island failed to provide unequivocal support for either scenario.

Link

more...
No comment yet.