Phylogenomics and biogeography of the world's thrushes (Aves, Turdus): new evidence for a more parsimonious evolutionary history
Phylogenomics and biogeography of the world's thrushes (Aves, Turdus): new evidence for a more parsimonious evolutionary history
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DOI：
10.1098/rspb.2019.2400
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发表时间：
2020-01-29
影响因子：
4.7
通讯作者：
Antonelli, Alexandre
中科院分区：
文献类型：
--
作者：
Batista, Romina;Olsson, Urban;Antonelli, Alexandre
为了阐明鸟类属Turdus（Aves）在世界各地的关系和空间范围演化，我们制作了一个大型基因组数据集，该数据集包含代表53个物种的约100个样本的约200万个核苷酸，包括超过2000个位点。我们估计时间校准的最大似然和多物种coalescentprogenies，并进行了地理分析。我们的研究结果表明，有相当少的跨洋传播比以前建议的属Turdus，这样的古北分支不起源于美洲和非洲分支不参与美洲的殖民化。相反，我们的研究结果表明，从西部古北通过安的列斯群岛的新热带区的扩散可能发生在一个单一的事件，引起了丰富的新热带区的多样性的Turdus今天观察到，没有反向扩散到thePalaearctic或非洲。我们的大型多位点数据集，结合密集的物种水平采样和概率方法下的分析，带来了重要的见解历史地理学和系统学，即使在快速和空间复杂的多样化的情况下。
To elucidate the relationships and spatial range evolution across the world of the bird genus Turdus (Aves), we produced a large genomic dataset comprising ca 2 million nucleotides for ca 100 samples representing 53 species, including over 2000 loci. We estimated time-calibrated maximum-likelihood and multispecies coalescentphylogenies and carried out biogeographic analyses. Our results indicate that there have been considerably fewer trans-oceanic dispersals within the genus Turdus than previously suggested, such that the Palaearctic clade did not originate in America and the African clade was not involved in the colonization of the Americas. Instead, our findings suggest that dispersal from the Western Palaearctic via the Antilles to the Neotropics might have occurred in a single event, giving rise to the rich Neotropical diversity of Turdus observed today, with no reverse dispersals to thePalaearctic or Africa. Our large multilocus dataset, combined with dense species-level sampling and analysed under probabilistic methods, brings important insights into historical biogeography and systematics, even in a scenario of fast and spatially complex diversification.