Hurricane effects on Neotropical lizards span geographic and phylogenetic scales
Hurricane effects on Neotropical lizards span geographic and phylogenetic scales
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DOI：
10.1073/pnas.2000801117
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发表时间：
2020-05-12
影响因子：
11.1
通讯作者：
Herrel, Anthony
中科院分区：
文献类型：
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作者：
Donihue, Colin M.;Kowaleski, Alex M.;Herrel, Anthony
干旱、寒流和飓风等极端气候事件可能是自然选择的强有力因素，产生的急性选择压力与作用于生物体的日常压力截然不同。然而，这些罕见但严重的破坏是否会被埃塞俄比亚的选择性力量迅速消除，或者它们是否有可能持久地塑造跨区域和分支的生物多样性模式，仍然是未知数。在这里，我们表明，飓风有持久的进化影响anoles的形态，一个不同的新热带蜥蜴分支。我们首先展示了极端选择对2017年遭受飓风袭击的两个种群的趾垫面积的跨代影响。考虑到飓风的这种短期影响，我们接着询问，更频繁经历飓风的种群和物种是否有更大的脚趾。使用70年的历史飓风数据，我们证明，事实上，脚趾面积正相关的12个岛屿人口的Anolis sagrei和188 Anolis物种在整个新热带区的飓风活动。由于气候变化，极端气候事件正在加剧，可能是地理和大规模生物多样性模式被忽视的驱动因素。
Extreme climate events such as droughts, cold snaps, and hurricanes can be powerful agents of natural selection, producing acute selective pressures very different from the everyday pressures acting on organisms. However, it remains unknown whether these infrequent but severe disruptions are quickly erased by quotidian selective forces, or whether they have the potential to durably shape biodiversity patterns across regions and clades. Here, we show that hurricanes have enduring evolutionary impacts on the morphology of anoles, a diverse Neotropical lizard clade. We first demonstrate a transgenerational effect of extreme selection on toepad area for two populations struck by hurricanes in 2017. Given this short-term effect of hurricanes, we then asked whether populations and species that more frequently experienced hurricanes have larger toepads. Using 70 y of historical hurricane data, we demonstrate that, indeed, toepad area positively correlates with hurricane activity for both 12 island populations of Anolis sagrei and 188 Anolis species throughout the Neotropics. Extreme climate events are intensifying due to climate change and may represent overlooked drivers of biogeographic and large-scale biodiversity patterns.