Naturhistorisches Museum der Burgergemeinde Bern, Bernastrasse 15, CH-3005 Bern, Switzerland.
Evolutionary Biology, Department of Biology II, Ludwig Maximilians University Munich, Biozentrum Martinsried, D-82152 Martinsried, Germany.
Mol Phylogenet Evol. 2019 Oct;139:106568. doi: 10.1016/j.ympev.2019.106568. Epub 2019 Jul 23.
In wheatears and related species ('open-habitat chats'), molecular phylogenetics has led to a comprehensively revised understanding of species relationships and species diversity. Phylogenetic analyses have suggested that, in many cases, phenotypic similarities do not reflect species' relationships, revealing traditionally defined genera as non-monophyletic. This led to the suggestion of pervasive parallel evolution of open-habitat chats' plumage coloration and ecological phenotypes. However, to date, the molecular evidence for the phylogenetic relationships among open-habitat chats is mainly limited to mitochondrial DNA. Here, we assessed whether the mitochondrial relationships are supported by genome-wide data. To this end, we reconstructed the species tree among 14 open-habitat chat taxa using multi-species coalescent analyses based on ~1'300 SNPs. Our results confirm previous ones based chiefly on mitochondrial DNA; notably the paraphyly of the Oenanthe lugens complex and the clustering of individual species formerly placed in the genera Cercomela and Myrmecocichla within Oenanthe. Since several variable morphological and ecological characteristics occur in multiple places across the open-habitat chat phylogeny, our study consolidates the evidence for pervasive parallel evolution in the plumage coloration and ecology of open-habitat chats.
在麦鸡和相关物种（“开阔栖息地雀形目鸟”）中，分子系统发生学彻底改变了对物种关系和物种多样性的认识。系统发育分析表明，在许多情况下，表型相似性并不反映物种之间的关系，传统定义的属并非单系发生。这导致人们提出开阔栖息地雀形目鸟的羽毛颜色和生态表型普遍存在平行进化。然而，迄今为止，有关开阔栖息地雀形目鸟之间系统发育关系的分子证据主要限于线粒体 DNA。在这里，我们评估了线粒体关系是否得到全基因组数据的支持。为此，我们使用基于约 1300 个 SNP 的多物种合并分析，重建了 14 种开阔栖息地雀形目鸟种之间的种系发生树。我们的结果证实了主要基于线粒体 DNA 的先前研究结果；特别是 Oenanthe lugens 复合体的并系发生和以前归入 Cercomela 和 Myrmecocichla 属的个别物种在 Oenanthe 内聚类。由于在开阔栖息地雀形目鸟的系统发育中出现了多个形态和生态特征的多变性，我们的研究巩固了在开阔栖息地雀形目鸟的羽毛颜色和生态方面普遍存在平行进化的证据。
