Genetic Origins of the Kiritimati Population from Central-Eastern Micronesia.

IF 2.8 2区生物学 Q2 EVOLUTIONARY BIOLOGY Genome Biology and Evolution Pub Date : 2025-03-06 DOI:10.1093/gbe/evaf046

Maximilian Larena, Afifa Enam Chowdhury, Ma Junaliah Tuazon Kels, Kai Tätte, Mait Metspalu, Carina M Schlebusch, Ralph Garcia-Bertrand, Rene J Herrera

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Abstract

The migration of Austronesian-speaking populations through Oceania has intrigued researchers for decades. The Kiribati islands, situated along the boundaries of Micronesia and Polynesia, provide a crucial link in this migration. We analyzed the genome-wide data of the Kiritimati population of Kiribati to uncover their genetic origins and connections with other Oceanian groups. Our study reveals that the Kiritimati population primarily exhibits Remote Oceanian-related ancestry associated with ancient Lapita and present-day Polynesian populations. In addition, our identity-by-descent analysis identifies populations from the coastal southern Philippines as their closest relatives in Island Southeast Asia. The genetic links between Kiritimati, ancient Lapita, and modern Polynesians underscore the shared ancestry and continuous gene flow across these regions. This genetic continuity and ongoing links are supported by linguistic and cultural evidence, illustrating a complex history of migration and admixture in Oceania.

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密克罗尼西亚中东部 Kiritimati 人口的基因起源。

几十年来，说南岛语的人口在大洋洲的迁徙一直吸引着研究人员。位于密克罗尼西亚和波利尼西亚边界的基里巴斯群岛是这次迁徙的关键一环。我们分析了基里巴斯基里蒂玛蒂人的全基因组数据，以揭示他们的遗传起源以及与其他大洋洲群体的联系。我们的研究表明，基里蒂玛蒂人主要表现出与古代拉皮塔人和当今波利尼西亚人有关的遥远的大洋洲祖先。此外，我们的血统鉴定分析确定来自菲律宾的人群是他们在东南亚岛屿上的近亲。基里提玛提人、古代拉皮塔人和现代波利尼西亚人之间的基因联系强调了这些地区的共同祖先和持续的基因流动。这种遗传的连续性和持续的联系得到了语言和文化证据的支持，说明了大洋洲复杂的移民和混合历史。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Genome Biology and Evolution EVOLUTIONARY BIOLOGY-GENETICS & HEREDITY

CiteScore

5.80

自引率

6.10%

发文量

169

审稿时长

1 months

期刊介绍： About the journal Genome Biology and Evolution (GBE) publishes leading original research at the interface between evolutionary biology and genomics. Papers considered for publication report novel evolutionary findings that concern natural genome diversity, population genomics, the structure, function, organisation and expression of genomes, comparative genomics, proteomics, and environmental genomic interactions. Major evolutionary insights from the fields of computational biology, structural biology, developmental biology, and cell biology are also considered, as are theoretical advances in the field of genome evolution. GBE’s scope embraces genome-wide evolutionary investigations at all taxonomic levels and for all forms of life — within populations or across domains. Its aims are to further the understanding of genomes in their evolutionary context and further the understanding of evolution from a genome-wide perspective.