MOE Key Laboratory for Biodiversity Science and Ecological Engineering, College of Life Sciences, Beijing Normal University, Beijing 100875, China.
State Key Laboratory of Biocontrol, School of Ecology/School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China.
Mol Phylogenet Evol. 2020 Oct;151:106895. doi: 10.1016/j.ympev.2020.106895. Epub 2020 Jun 18.
The advent of the phylogenomic era has significantly improved our understanding of the evolutionary history and biogeography of Southeast Asia's diverse avian fauna. However, the taxonomy and phylogenetic relationships of many Southeast Asian birds remain poorly resolved, especially for those with large geographic ranges, which might have experienced both ancient and recent geological and environmental changes. In this study, we examined the evolutionary history and biogeography of the hill partridges (Galliformes: Phasianidae: Arborophila spp.), currently the second most speciose galliform genus, and thought to have colonized Southeast Asia from Africa. We present a well-resolved phylogeny of 14 Arborophila species inferred from ultra-conserved elements, exons, and mitochondrial genomes from both fresh and museum samples, which representing almost complete coverage of the genus. Our fossil-calibrated divergence time estimates and biogeographic modeling showed the ancestor of Arborophila arrived in Indochina during the early Miocene, but the initial divergence within Arborophila did not occur until ~10 Ma when global cooling intensified. Subsequent dispersal and diversification within Arborophila were driven by several tectonic and climatic events. In particular, we found evidence of rapid radiation in Indochinese Arborophila during the Pliocene global cooling and extensive dispersal and speciation of Sundaic Arborophila during the Pleistocene sea-level fluctuations. Taken together, these results suggest that the evolutionary history and biogeography of Arborophila were influenced by complex interactions among historical, geological and climatic events in Southeast Asia.
系统发育基因组学时代的到来极大地提高了我们对东南亚多样鸟类区系的进化历史和生物地理学的理解。然而，许多东南亚鸟类的分类学和系统发育关系仍未得到很好的解决，特别是那些地理分布范围广泛的鸟类，它们可能经历了古代和近代的地质和环境变化。在这项研究中，我们研究了山鹧鸪（鸡形目：雉科：Arborophila 属）的进化历史和生物地理学，山鹧鸪属是目前第二大的雉科属，被认为是从非洲迁徙到东南亚的。我们从超保守元件、外显子和来自新鲜和博物馆样本的线粒体基因组推断出了 14 种 Arborophila 物种的高度解析的系统发育关系，几乎涵盖了该属的所有物种。我们的化石校准的分歧时间估计和生物地理学模型表明，Arborophila 的祖先在中新世早期到达了印度支那，但 Arborophila 内部的最初分歧直到约 1000 万年前全球变冷加剧时才发生。随后，Arborophila 的扩散和多样化是由几次构造和气候事件驱动的。特别是，我们发现了证据表明，在更新世全球变冷期间，印度支那的 Arborophila 发生了快速辐射，而在更新世海平面波动期间，巽他群岛的 Arborophila 发生了广泛的扩散和物种形成。总之，这些结果表明，Arborophila 的进化历史和生物地理学受到东南亚历史、地质和气候事件之间复杂相互作用的影响。
