Fernando Olga, Mota Paulo, Lima Manuela, Silva Catarina, Montiel Rafael, Amorim António, Prata Maria João
Institute of Molecular Pathology and Immunology of the University of Porto IPATIMUP), R. Dr. Roberto Frias s/n, 4200-465 Porto, Portugal.
Hum Biol. 2005 Apr;77(2):189-99. doi: 10.1353/hub.2005.0039.
Nine Atlantic islands with approximately five and a half centuries of demographic history constitute the Portuguese archipelago of the Azores. Despite the recent peopling history of these islands, written records regarding the specific origin and relative proportions of the first settlers are scarce and incomplete. To gain insights into the history of the peopling of the Azores and to evaluate to what extent population imports described in historical sources left their marks on the genetic constitution of the present-day populations, we analyzed 11 Y-chromosome biallelic markers in a sample of 145 unrelated individuals of Azorean ancestry. The main results of this study indicate that the genetic profile of the Azorean male population shows high affinities with that of mainland Portugal, in accordance with the general knowledge, derived from historical sources, that the Portuguese were the major contributors to the Azorean founding population. Nevertheless, genetic traces of settlers from other origins also mentioned in historical records can still be found in the present-day population. Thus typically sub-Saharan male lineages were detected in the archipelago, in contrast to what has been described for mainland Portugal. Furthermore, compared to what has been described for the mainland Portugal population, our data support a stronger influence of people of Jewish origin, as detected by an increased frequency of lineages belonging to haplogroup J.
拥有约五个半世纪人口历史的九个大西洋岛屿构成了葡萄牙的亚速尔群岛。尽管这些岛屿近期才有人类居住的历史，但关于首批定居者的具体来源和相对比例的书面记录却稀少且不完整。为深入了解亚速尔群岛的人口历史，并评估历史资料中所描述的人口迁入在多大程度上在当今人口的基因构成上留下了印记，我们对145名具有亚速尔群岛血统的无关个体样本中的11个Y染色体双等位基因标记进行了分析。这项研究的主要结果表明，亚速尔群岛男性人口的基因特征与葡萄牙大陆男性的基因特征高度相似，这与历史资料中的普遍认知相符，即葡萄牙人是亚速尔群岛创始人口的主要贡献者。然而，在当今人口中仍然可以发现历史记录中提到的其他来源定居者的基因痕迹。因此，与葡萄牙大陆所描述的情况不同，在该群岛中检测到了典型的撒哈拉以南男性谱系。此外，与葡萄牙大陆人口的情况相比，我们的数据支持犹太裔人群具有更强影响力的观点，这是通过属于单倍群J的谱系频率增加检测到的。
