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Top Comments: Migration Patterns Among Pacific Islanders Revealed by DNA Studies [1]

['Chloris Creator', 'Sabrina Haake']

Date: 2026-08-16  

Uploaded to DailyKos by Ed Tracey

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Before about 5,000 years ago, the more remote island in the Pacific Ocean had never been inhabited by humans. At present, this region is populated by a diverse collection of cultures, with more than 200 spoken languages. New DNA research is helping to determine where their ancestors came from, and when and how they got to the islands.

Remote Oceania encompasses the major island groups of Vanuatu, New Caledonia, Fiji and Polynesia. The island region forms an almost triangular shape on the map, stretching between New Zealand in the south, Hawaii in the north and Easter Island in the east—Remote Oceania altogether spans more than 30 million square kilometers (12 million square miles) of the Pacific Ocean.

While it was already known that the principal heritage of these islanders showed origins in both Southeast Asia and Papua-New Guinea, details on when and where these two separate groups arrived in the islands were not clear. Researchers analyzed the DNA from the skeletal remains of 72 individuals who lived in various periods during the past three millennia.

The researchers found differences in the pace of the two migration waves: “Based on genetic admixture dating, we were able to determine that the Southeast Asian-related early dispersal spread faster than the Papuan-related wave,” says Posth. “While we date the presence of Papuan-related ancestry in Vanuatu to as early as 2,700 years ago, another 500 years or so passed before this ancestry is detected farther east in Fiji.” In contrast, archaeological evidence shows that the early Southeast Asian wave traveled along this route much more rapidly. “Later, a second wave of Papuan ancestry reached Fiji,” Posth adds. This second wave likely came from neighboring archipelagos, such as Vanuatu, showing previously unknown genetic connections between islands in western Remote Oceania.

Interestingly, there is a third source of genetic heritage in Vanuatu, from Polynesia, which arrived about 1,000 years ago. Interestingly, the Polynesians formed distinct communities and have managed to preserve their culture.

This is another example of how DNA analysis technology is revealing historical data that we would never have discovered otherwise.

On to the Comments:

From Alex:

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[1] Url: https://www.dailykos.com/stories/2026/8/16/800085243/community/top-comments-migration-patterns-among-pacific-islanders-revealed-b/

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