학술논문

Ancient DNA reveals five streams of migration into Micronesia and matrilocality in early Pacific seafarers
Document Type
Academic Journal
Source
Science. July 1, 2022, Vol. 377 Issue 6601, p72, 8 p.
Subject
Pacific Islands
New Guinea
Vanuatu
Guam
Palau
Micronesia (Nation)
Oceania
Mariana Islands
Northern Mariana Islands
United Kingdom
Language
English
ISSN
0036-8075
Abstract
Micronesia began to be peopled earlier than other parts of Remote Oceania, but the origins of its inhabitants remain unclear. We generated genome-wide data from 164 ancient and 112 modern individuals. Analysis reveals five migratory streams into Micronesia. Three are East Asian related, one is Polynesian, and a fifth is a Papuan source related to mainland New Guineans that is different from the New Britain-related Papuan source for southwest Pacific populations but is similarly derived from male migrants -2500 to 2000 years ago. People of the Mariana Archipelago may derive all of their precolonial ancestry from East Asian sources, making them the only Remote Oceanians without Papuan ancestry. Female-inherited mitochondrial DNA was highly differentiated across early Remote Oceanian communities but homogeneous within, implying matrilocal practices whereby women almost never raised their children in communities different from the ones in which they grew up.