Of mice and the 'Age of Discovery': the complex history of colonization of the Azorean archipelago by the house mouse (Mus musculus) as revealed by mitochondrial DNA variation
Of mice and the 'Age of Discovery': the complex history of colonization of the Azorean archipelago by the house mouse (Mus musculus) as revealed by mitochondrial DNA variation
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DOI：
10.1111/jeb.12550
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发表时间：
2015-01-01
影响因子：
2.1
通讯作者：
Searle, J. B.
中科院分区：
文献类型：
--
作者：
Gabriel, S. I.;Mathias, M. L.;Searle, J. B.
人类已经将许多物种引入到遥远的海洋岛屿上。家鼠（Mus musculus）是人类的一种寄生虫，因此作为一种偶然的偷渡者被运送到地球仪周围的海洋岛屿。这些介绍的历史不仅可以告诉我们关于老鼠本身，还可以告诉我们关于运送它们的人。根据地理学的方法，我们使用线粒体D环序列变异（849- 864-bp片段内）来研究家鼠在亚速尔群岛的定居。从所有9个岛屿共获得了239个序列，并通过先前公布的伊比利亚序列和66个新生成的西班牙序列进行了解释。贝叶斯分析显示，在亚速尔群岛的大部分的D-环分支先前描述的家鼠亚种的存在，这表明一个复杂的殖民历史的群岛作为一个整体，从多个地理起源，但少得多的异质性（往往是单一的殖民？）在岛上。与葡萄牙大陆的预期历史联系反映在一些岛屿的D环变化模式中，但不是全部。在三个岛屿上还发现了与遥远的北欧源区更意想不到的联系，可能反映了葡萄牙水手在15世纪世纪发现亚速尔群岛之前人类与亚速尔群岛的接触。通过共享这些地区之间的小鼠序列，亚速尔群岛、马德拉群岛、加那利群岛、葡萄牙和西班牙之间的人类联系被揭示出来，从而扩大了整个马卡罗尼西亚群岛的殖民范围。从这些和其他数据中，我们建议小鼠研究可能有助于解决与发现时代有关的历史不确定性。
Humans have introduced many species onto remote oceanic islands. The house mouse (Mus musculus) is a human commensal and has consequently been transported to oceanic islands around the globe as an accidental stowaway. The history of these introductions can tell us not only about the mice themselves but also about the people that transported them. Following a phylogeographic approach, we used mitochondrial D-loop sequence variation (within an 849- to 864-bp fragment) to study house mouse colonization of the Azores. A total of 239 sequences were obtained from all nine islands, and interpretation was helped by previously published Iberian sequences and 66 newly generated Spanish sequences. A Bayesian analysis revealed presence in the Azores of most of the D-loop clades previously described in the domesticus subspecies of the house mouse, suggesting a complex colonization history of the archipelago as a whole from multiple geographical origins, but much less heterogeneity (often single colonization?) within islands. The expected historical link with mainland Portugal was reflected in the pattern of D-loop variation of some of the islands but not all. A more unexpected association with a distant North European source area was also detected in three islands, possibly reflecting human contact with the Azores prior to the 15th century discovery by Portuguese mariners. Widening the scope to colonization of the Macaronesian islands as a whole, human linkages between the Azores, Madeira, the Canaries, Portugal and Spain were revealed through the sharing of mouse sequences between these areas. From these and other data, we suggest mouse studies may help resolve historical uncertainties relating to the Age of Discovery'.