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科学家绘制出加勒比海早期人类的基因组图谱
作者:小柯机器人 发布时间:2020/6/7 0:29:58

丹麦根本哈根大学Hannes Schroeder、德国马克斯普朗克研究所Johannes Krause、Kathrin Nägele等研究人员,合作绘制出加勒比海早期人类的基因组图谱。这一研究成果于2020年6月4日在线发表在《科学》上。

研究人员获得了距今3200-400年之间的93个古代加勒比岛民的全基因组数据,并找到了至少三个单独扩散到该区域的证据,包括两次早期扩散到西加勒比海,其中一个似乎与北美的辐射事件有关,随后是南美的扩张。
 
研究人员还检测到早期定居者与南美新移民之间的遗传差异,几乎没有混合迹象。这些研究结果加深了人们对加勒比最初人口扩张以及美洲古时代民族迁移的理解。
 
据了解,加勒比海是美洲最后一个被人类定居的地区之一,但目前尚不清楚他们是如何、何时以及从何地到达这些岛屿的。
 
附:英文原文

Title: Genomic insights into the early peopling of the Caribbean

Author: Kathrin Ngele, Cosimo Posth, Miren Iraeta Orbegozo, Yadira Chinique de Armas, Silvia Teresita Hernández Godoy, Ulises M. González Herrera, Maria A. Nieves-Colón, Marcela Sandoval-Velasco, Dorothea Mylopotamitaki, Rita Radzeviciute, Jason Laffoon, William J. Pestle, Jazmin Ramos-Madrigal, Thiseas C. Lamnidis, William C. Schaffer, Robert S. Carr, Jane S. Day, Carlos Arredondo Antúnez, Armando Rangel Rivero, Antonio J. Martínez-Fuentes, Edwin Crespo-Torres, Ivan Roksandic, Anne C. Stone, Carles Lalueza-Fox, Menno Hoogland, Mirjana Roksandic, Corinne L. Hofman, Johannes Krause, Hannes Schroeder

Issue&Volume: 2020/06/04

Abstract: Abstract The Caribbean was one of the last regions of the Americas to be settled by humans, but how, when, and from where they reached the islands remains unclear. We generated genome-wide data for 93 ancient Caribbean islanders dating between 3200-400 cal. BP and find evidence of at least three separate dispersals into the region, including two early dispersals into the Western Caribbean, one of which seems connected to radiation events in North America. This was followed by a later expansion from South America. We also detect genetic differences between the early settlers and the newcomers from South America with almost no evidence of admixture. Our results add to our understanding of the initial peopling of the Caribbean and the movements of Archaic Age peoples in the Americas.

DOI: 10.1126/science.aba8697

Source: https://science.sciencemag.org/content/early/2020/06/03/science.aba8697

期刊信息
Science:《科学》,创刊于1880年。隶属于美国科学促进会,最新IF:41.037