ArticleNature communications2026
Ancient DNA reveals a family ossuary and long-distance migration on the Pacific coast before the Inca Empire.
Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Ancient DNA reveals a family ossuary and long-distance migration on the Pacific coast before the Inca Empire.Nature communications · 2026Article
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12 authors.
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Abstract
This paper tracks long-distance migration on the Pacific coast that began no later than the thirteenth century AD. Genome-wide data for 21 sampled individuals from the lower and middle Chincha Valley of southern Peru show shared ancestry with groups 700 km to the north. A large-scale polity known as the Chincha Kingdom controlled the Chincha Valley from the thirteenth century until the fifteenth century, when it fell to the Inca Empire. The earliest migrants have unadmixed ancestry, whereas in subsequent generations, intermarriage resulted in admixtures from neighboring coastal areas. Relatives buried together in a family ossuary practiced consanguineous endogamy. We build a generation-scale Bayesian model informed by an aDNA-based family tree and individual calibration curves for estimated proportions of marine diet, addressing long-standing difficulties with temporal precision on the Pacific coast due to the marine reservoir effect and uncertainty inherent in estimating marine consumption based on δ
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