Revealing the maternal demographic history of Panthera leo using ancient DNA and a spatially explicit genealogical analysis.
Revealing the maternal demographic history of Panthera leo using ancient DNA and a spatially explicit genealogical analysis.
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DOI：
10.1186/1471-2148-14-70
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发表时间：
2014-04-02
影响因子：
3.4
通讯作者：
Larson G
中科院分区：
文献类型：
--
作者：
Barnett R;Yamaguchi N;Shapiro B;Ho SY;Barnes I;Sabin R;Werdelin L;Cuisin J;Larson G
了解一个种群的人口历史对于保护和我们更广泛地理解进化过程至关重要。然而，对于许多热带大型哺乳动物来说，由于缺乏化石材料以及从最近分散和孤立的种群的遗传数据中获得的误导性信号，这一目标受到了混淆。对于狮子来说尤其如此，由于数千年的人类迫害，其自然分布和最近灭绝的几个种群之间存在很大的差距。我们对博物馆保存的个体的线粒体DNA进行了测序，包括灭绝的巴巴利狮（Panthera leo leo）和伊朗狮（P. l。还有来自西非和中非的狮子。我们将这些添加到更广泛的狮子序列样本中，产生了一个涵盖狮子历史范围的数据集。我们的贝叶斯地理分析提供了证据，高度支持，单系狮子分支。使用分子钟，我们估计，最近的狮子谱系开始在晚更新世分化。赤道雨林的扩张可能将非洲南部和东部的狮子与其他种群分开。在雨林收缩期间，西非狮子随后扩展到中非。最后，我们发现了两次从北非入侵亚洲的证据，首先是印度，后来是中东。我们已经确定了深刻的，支持分裂的线粒体内的非洲狮子，主张承认一些地区的人口值得独立的保护。现在需要更多的形态学和核DNA数据来测试这些细分。
Understanding the demographic history of a population is critical to conservation and to our broader understanding of evolutionary processes. For many tropical large mammals, however, this aim is confounded by the absence of fossil material and by the misleading signal obtained from genetic data of recently fragmented and isolated populations. This is particularly true for the lion which as a consequence of millennia of human persecution, has large gaps in its natural distribution and several recently extinct populations. We sequenced mitochondrial DNA from museum-preserved individuals, including the extinct Barbary lion (Panthera leo leo) and Iranian lion (P. l. persica), as well as lions from West and Central Africa. We added these to a broader sample of lion sequences, resulting in a data set spanning the historical range of lions. Our Bayesian phylogeographical analyses provide evidence for highly supported, reciprocally monophyletic lion clades. Using a molecular clock, we estimated that recent lion lineages began to diverge in the Late Pleistocene. Expanding equatorial rainforest probably separated lions in South and East Africa from other populations. West African lions then expanded into Central Africa during periods of rainforest contraction. Lastly, we found evidence of two separate incursions into Asia from North Africa, first into India and later into the Middle East. We have identified deep, well-supported splits within the mitochondrial phylogeny of African lions, arguing for recognition of some regional populations as worthy of independent conservation. More morphological and nuclear DNA data are now needed to test these subdivisions.
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影响因子：
2
作者：
Bauer, H;De Iongh, HH;Ngantou, D
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de Iongh, H. H.
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通讯作者：
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作者：
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通讯作者：
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