Mitochondrial DNA Variation in Southern Tunisian Populations

4区 生物学 Q2 Medicine
M. Capocasa, C. Battaggia, E. Cancellieri, A. Lisi, Nouri Boukhchim, G. Bisol, S. di Lernia, P. Anagnostou
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引用次数: 0

Abstract

Due to its complex history of migrations and colonization of African, European, and Asian people, the Tunisian territory is an ideal area to study the effects of cultural change on the genetic structure of human populations. This study investigated genetic variation in the mitochondrial DNA of Tunisian populations to detect the possible impact of recent historical events on their gene pool. Two Arab and three Berber communities were analyzed using a comparison data set of 45 other populations comprising African, Arabian, Asian, European, and Near Eastern groups. Results were compared with those produced using a large panel of autosomal single-nucleotide polymorphisms. We observed a slight but important difference between the populations that inhabit the southern and central-northern areas of Tunisia. Furthermore, robust signatures of genetic isolation were detected in two Berber populations (Nouvelle Zraoua and Tamezret) and in the R’Baya people, a seminomadic Arab group. This investigation suggests that the genetic structure of investigated southern Tunisian populations retains signatures of historical events that occurred between the 7th and 17th centuries, particularly the trans-Saharan slave trade and the emigration of Berbers in remote areas of the south during the Arab conquest.
突尼斯南部人口的线粒体 DNA 变异
由于非洲人、欧洲人和亚洲人迁徙和殖民的复杂历史,突尼斯领土是研究文化变迁对人类种群遗传结构影响的理想地区。本研究调查了突尼斯人口线粒体 DNA 的遗传变异,以检测近代历史事件对其基因库可能产生的影响。研究人员利用由非洲、阿拉伯、亚洲、欧洲和近东地区的 45 个其他种群组成的对比数据集,对两个阿拉伯族群和三个柏柏尔族群进行了分析。分析结果与使用大型常染色体单核苷酸多态性面板得出的结果进行了比较。此外,我们还在两个柏柏尔人种群(NouvelleZraoua 和 Tamezret)以及半游牧阿拉伯人种群 R'Baya 人中发现了强大的遗传隔离特征。这项调查表明,被调查的突尼斯南部人口的遗传结构保留了 7 至 17 世纪历史事件的特征,特别是跨撒哈拉奴隶贸易和阿拉伯征服期间南部偏远地区柏柏尔人的移民。
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来源期刊
Human Biology
Human Biology 生物-生物学
CiteScore
1.90
自引率
0.00%
发文量
88
审稿时长
>12 weeks
期刊介绍: Human Biology publishes original scientific articles, brief communications, letters to the editor, and review articles on the general topic of biological anthropology. Our main focus is understanding human biological variation and human evolution through a broad range of approaches. We encourage investigators to submit any study on human biological diversity presented from an evolutionary or adaptive perspective. Priority will be given to interdisciplinary studies that seek to better explain the interaction between cultural processes and biological processes in our evolution. Methodological papers are also encouraged. Any computational approach intended to summarize cultural variation is encouraged. Studies that are essentially descriptive or concern only a limited geographic area are acceptable only when they have a wider relevance to understanding human biological variation. Manuscripts may cover any of the following disciplines, once the anthropological focus is apparent: human population genetics, evolutionary and genetic demography, quantitative genetics, evolutionary biology, ancient DNA studies, biological diversity interpreted in terms of adaptation (biometry, physical anthropology), and interdisciplinary research linking biological and cultural diversity (inferred from linguistic variability, ethnological diversity, archaeological evidence, etc.).
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