Earth history and the passerine superradiation
Earth history and the passerine superradiation
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DOI：
10.1073/pnas.1813206116
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发表时间：
2019-04-16
影响因子：
11.1
通讯作者：
Faircloth, Brant C.
中科院分区：
文献类型：
--
作者：
Oliveros, Carl H.;Field, Daniel J.;Faircloth, Brant C.
鸟类多样性受到全球气候变化、板块构造运动和大灭绝事件的影响。然而，这些因素对高度多样化栖息鸟类（雀鸟）多样化的影响尚不清楚，因为家族层面的关系尚未解决，谱系之间分裂事件的时间也不确定。我们分析了来自4060个核位点和137个雀形目科的DNA数据，使用串联和聚结的方法来推断一个全面的系统发育假说，以澄清所有雀形目科之间的关系。然后，我们使用13个化石校准了这一系统发育，以检查地球历史上不同事件对雀形目动物多样化时间和速度的影响。我们的分析与化石和地质记录相一致；表明雀形目动物起源于类似于47ma的澳大利亚大陆；并表明随后雀形目的扩散和多样化受到一系列气候和地质事件的影响，如渐新世冰川作用和新西兰大陆的淹没。尽管雀形目动物多样化率在整个新生代波动，但我们发现雀形目动物多样化率与新生代全球温度之间没有联系，我们的分析表明，我们观察到的雀形目动物多样化率的增加与新大陆的殖民化无关。综上所述，这些结果表明，比温度变化或生态机会更复杂的机制控制着雀鱼物种形成的宏观模式。
Avian diversification has been influenced by global climate change, plate tectonic movements, and mass extinction events. However, the impact of these factors on the diversification of the hyper-diverse perching birds (passerines) is unclear because family level relationships are unresolved and the timing of splitting events among lineages is uncertain. We analyzed DNA data from 4,060 nuclear loci and 137 passerine families using concatenation and coalescent approaches to infer a comprehensive phylogenetic hypothesis that clarifies relationships among all passerine families. Then, we calibrated this phylogeny using 13 fossils to examine the effects of different events in Earth history on the timing and rate of passerine diversification. Our analyses reconcile passerine diversification with the fossil and geological records; suggest that passerines originated on the Australian landmass similar to 47 Ma; and show that subsequent dispersal and diversification of passerines was affected by a number of climatological and geological events, such as Oligocene glaciation and inundation of the New Zealand landmass. Although passerine diversification rates fluctuated throughout the Cenozoic, we find no link between the rate of passerine diversification and Cenozoic global temperature, and our analyses show that the increases in passerine diversification rate we observe are disconnected from the colonization of new continents. Taken together, these results suggest more complex mechanisms than temperature change or ecological opportunity have controlled macroscale patterns of passerine speciation.