A mitochondrial analysis reveals distinct founder effect signatures in Canarian and Balearic goats
A mitochondrial analysis reveals distinct founder effect signatures in Canarian and Balearic goats
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DOI：
10.1111/age.12302
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发表时间：
2015-08-01
期刊：
影响因子：
2.4
通讯作者：
Amills, M.
中科院分区：
文献类型：
--
作者：
Ferrando, A.;Manunza, A.;Amills, M.
在人类迁徙过程中，家畜往往被迁移到岛屿上，目的是确保食物供应。这些创始人事件预计将留下一个基因足迹，今天可能会被认可。因此，我们研究了生活在加那利群岛和巴利阿里群岛的山羊种群的线粒体多样性。中位数加入网络分析产生了非常不同的网络拓扑结构，这两个人口。事实上，大多数加那利山羊共享一个单一的祖先单倍型，隔离在所有采样的岛屿，这表明一个单一的创始人效应，其次是一个垫脚石模式的扩散。这种单倍型也存在于从大加那利岛和兰萨罗特岛的考古集会收集的样本中，证明了它在古代的广泛分布。与此形成鲜明对比的是，马略卡岛和伊维萨岛的山羊没有任何线粒体单倍型，表明发生了两个独立的创始人事件。此外，在马略卡山羊，我们检测到分离的线粒体G单倍型群，已被确定在山羊从埃及，伊朗和土耳其。这一发现表明亚洲和/或非洲山羊迁移到马略卡岛，可能是腓尼基人和迦太基人殖民该岛的结果。
In the course of human migrations, domestic animals often have been translocated to islands with the aim of assuring food availability. These founder events are expected to leave a genetic footprint that may be recognised nowadays. Herewith, we have examined the mitochondrial diversity of goat populations living in the Canarian and Balearic archipelagos. Median-joining network analysis produced very distinct network topologies for these two populations. Indeed, a majority of Canarian goats shared a single ancestral haplotype that segregated in all sampled islands, suggesting a single founder effect followed by a stepping-stone pattern of diffusion. This haplotype also was present in samples collected from archaeological assemblies at Gran Canaria and Lanzarote, making evident its widespread distribution in ancient times. In stark contrast, goats from Majorca and Ibiza did not share any mitochondrial haplotypes, indicating the occurrence of two independent founder events. Furthermore, in Majorcan goats, we detected the segregation of the mitochondrial G haplogroup that has only been identified in goats from Egypt, Iran and Turkey. This finding suggests the translocation of Asian and/or African goats to Majorca, possibly as a consequence of the Phoenician and Carthaginian colonisations of this island.