Genome-scale sequence data have invigorated the study of hybridization and introgression, particularly in animals. However, outside of a few notable cases, we lack systematic tests for introgression at a larger phylogenetic scale across entire clades. Here we leverage 155 genome assemblies, from 149 species, to generate a fossil-calibrated phylogeny and conduct multilocus tests for introgression across nine monophyletic radiations within the genus Drosophila. Using complementary phylogenomic approaches, we identify widespread introgression across the evolutionary history of Drosophila. Mapping gene-tree discordance onto the phylogeny revealed that both ancient and recent introgression has occurred across most of the nine clades that we examined. Our results provide the first evidence of introgression occurring across the evolutionary history of Drosophila and highlight the need to continue to study the evolutionary consequences of hybridization and introgression in this genus and across the Tree of Life.

中文翻译：

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跨越 155 个果蝇基因组系统发育的广泛基因渗入

基因组规模的序列数据激发了杂交和基因渗入的研究，特别是在动物中。然而，除了一些值得注意的案例之外，我们缺乏对整个进化枝在更大的系统发育规模上进行基因渗入的系统测试。在这里，我们利用来自 149 个物种的 155 个基因组组装来生成化石校准的系统发育，并对果蝇属内的九个单系辐射进行基因渗入的多位点测试。使用互补的系统基因组学方法，我们确定了果蝇进化史上广泛的基因渗入. 将基因树不一致映射到系统发育上显示，我们检查的九个进化枝中的大多数都发生了古代和最近的基因渗入。我们的结果提供了在果蝇进化史上发生基因渗入的第一个证据，并强调了继续研究该属和整个生命之树杂交和基因渗入的进化后果的必要性。