Wallacean and Melanesian Islands Promote Higher Rates of Diversification within the Global Passerine Radiation Corvides
Wallacean and Melanesian Islands Promote Higher Rates of Diversification within the Global Passerine Radiation Corvides
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华莱士和美拉尼西亚群岛促进全球雀形目辐射Corvides内更高的多样化率
DOI：
10.1093/sysbio/syac044
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发表时间：
2022
影响因子：
6.5
通讯作者：
Ho, ed., Simon
中科院分区：
文献类型：
--
作者：
McCullough, Jenna M.;Oliveros, Carl H.;Benz, Brett W.;Zenil-Ferguson, Rosana;Cracraft, Joel;Moyle, Robert G.;Andersen, Michael J.;Ho, ed., Simon
Wallacea和Melanopolis这两个复杂的岛屿群岛为进化生物学的整体理论提供了经验数据，包括异域物种形成和岛屿地理学。然而，关于分层的地理屏障，如深水海沟和孤立的岛屿系统，对动物多样化的相对影响的问题仍然没有得到充分的探讨。其中一个障碍是华莱士线，这是一个重要的地理边界，在很大程度上将澳大利亚和亚洲的生物多样性分开。为了评估地理屏障的相对作用，特别是孤立的岛屿系统和华莱士的线，我们调查的克里思和模式的多样化，在一个不同的鸟类辐射，乌鸦（乌鸦和松鸦，天堂鸟，Vangas，和盟友）。我们结合了一个属级数据集的数千个ultraconserved元素（UCE）和一个物种级，12个基因的桑格序列矩阵，产生一个解析良好的超矩阵树，我们利用它来探索该组的历史地理和地理障碍对他们的宏观进化动力学的影响。该树是很好的解决，并与已被广泛用于本集团内过去的比较分析有很大的不同。我们证实，Corvides，其主要组成的分支，出现在澳大利亚和爆发的分散西跨越华莱士线后，Wallacea在中新世中期的隆起发生。我们发现，跨越这一地理屏障的扩散通常是罕见的，虽然向西扩散的频率是向东扩散的两倍。瓦拉西亚位于巽他兰和萨胡尔之间的中心位置，无疑是一座桥梁，让人们跨越华莱士线，从澳大利亚跳岛扩散到地球其他地方。此外，我们发现，华莱士线以东的复杂的岛屿群岛港口的净多样化率最高，是一个重要的来源，殖民者的大陆系统两侧的这一地理屏障。我们的研究结果支持新出现的证据，即岛屿系统，特别是地质复杂的印度洋-太平洋群岛，是物种多样化的驱动力。[历史地理学;岛屿地理学;黑猩猩;分子遗传学;国家依赖的多样化和灭绝。
The complex island archipelagoes of Wallacea and Melanesia have provided empirical data behind integral theories in evolutionary biology, including allopatric speciation and island biogeography. Yet, questions regarding the relative impact of the layered biogeographic barriers, such as deep-water trenches and isolated island systems, on faunal diversification remain underexplored. One such barrier is Wallace’s Line, a significant biogeographic boundary that largely separates Australian and Asian biodiversity. To assess the relative roles of biogeographic barriers—specifically isolated island systems and Wallace’s Line—we investigated the tempo and mode of diversification in a diverse avian radiation, Corvides (Crows and Jays, Birds-of-paradise, Vangas, and allies). We combined a genus-level data set of thousands of ultraconserved elements (UCEs) and a species-level, 12-gene Sanger sequence matrix to produce a well-resolved supermatrix tree that we leveraged to explore the group’s historical biogeography and the effects of the biogeographic barriers on their macroevolutionary dynamics. The tree is well resolved and differs substantially from what has been used extensively for past comparative analyses within this group. We confirmed that Corvides, and its major constituent clades, arose in Australia and that a burst of dispersals west across Wallace’s Line occurred after the uplift of Wallacea during the mid-Miocene. We found that dispersal across this biogeographic barrier was generally rare, though westward dispersals were two times more frequent than eastward dispersals. Wallacea’s central position between Sundaland and Sahul no doubt acted as a bridge for island-hopping dispersal out of Australia, across Wallace’s Line, to colonize the rest of Earth. In addition, we found that the complex island archipelagoes east of Wallace’s Line harbor the highest rates of net diversification and are a substantial source of colonists to continental systems on both sides of this biogeographic barrier. Our results support emerging evidence that island systems, particularly the geologically complex archipelagoes of the Indo-pacific, are drivers of species diversification. [Historical biogeography; island biogeography; Melanesia; molecular phylogenetics; state-dependent diversification and extinction.]