The maternal aborigine colonization of La Palma (Canary Islands)
The maternal aborigine colonization of La Palma (Canary Islands)
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DOI：
10.1038/ejhg.2009.46
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发表时间：
2009-10-01
影响因子：
5.2
通讯作者：
Gonzalez, Ana M.
中科院分区：
文献类型：
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作者：
Fregel, Rosa;Pestano, Jose;Gonzalez, Ana M.
对拉帕尔马(加那利群岛)38个土著遗骸的牙齿进行了外部和内源线粒体DNA控制区序列以及诊断编码位置的分析。从30个个体获得信息序列(78.9%)。大多数血统(93%)来自西亚，其余(7%)来自撒哈拉以南非洲地区。大部分土著单倍型在北非有完全匹配(70%)。然而，在拉帕尔马发现的本土加那利亚型U6b1尚未在U6扩张的摇篮北非发现。拉帕尔马最丰富的H1分支，由过渡16260定义，在北非也是非常罕见的。这意味着，加那利亚原住民祖先来自的确切地区还没有被采样，或者他们已经被后来的人类迁徙所取代。在距离非洲大陆最远的岛屿之一拉帕尔马(95.2+/-2.3)发现的高度基因多样性，与之前在中部特内里费岛(92.4+/-2.8)发现的水平相同。这与认为这些岛屿是通过岛屿跳跃和后方孤立从大陆殖民的假设背道而驰。另一方面，拉帕尔马和特内里费岛的土著居民之间发现的极大相似之处与没有次级联系的逐岛独立的海洋殖民思想背道而驰。我们的数据更符合岛屿之间频繁迁徙的岛屿模型。《欧洲人类遗传学杂志》(2009年)第17期，1314年-1324年；doi：10.1038/ejhg.2009.46；在线出版
Teeth from 38 aboriginal remains of La Palma (Canary Islands) were analyzed for external and endogenous mitochondrial DNA control region sequences and for diagnostic coding positions. Informative sequences were obtained from 30 individuals (78.9%). The majority of lineages (93%) were from West Eurasian origin, being the rest (7%) from sub-Saharan African ascription. The bulk of the aboriginal haplotypes had exact matches in North Africa (70%). However, the indigenous Canarian sub-type U6b1, also detected in La Palma, has not yet been found in North Africa, the cradle of the U6 expansion. The most abundant H1 clade in La Palma, defined by transition 16260, is also very rare in North Africa. This means that the exact region from which the ancestors of the Canarian aborigines came has not yet been sampled or that they have been replaced by later human migrations. The high gene diversity found in La Palma (95.2 +/- 2.3), which is one of the farthest islands from the African continent, is of the same level than the previously found in the central island of Tenerife (92.4 +/- 2.8). This is against the supposition that the islands were colonized from the continent by island hopping and posterior isolation. On the other hand, the great similarity found between the aboriginal populations of La Palma and Tenerife is against the idea of an island-by-island independent maritime colonization without secondary contacts. Our data better fit to an island model with frequent migrations between islands. European Journal of Human Genetics (2009) 17, 1314-1324; doi: 10.1038/ejhg.2009.46; published online 1 April 2009