Palaeoclimate ocean conditions shaped the evolution of corals and their skeletons through deep time
Palaeoclimate ocean conditions shaped the evolution of corals and their skeletons through deep time
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DOI：
10.1038/s41559-020-01291-1
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发表时间：
2020-08-31
影响因子：
16.8
通讯作者：
McFadden, Catherine S.
中科院分区：
文献类型：
--
作者：
Quattrini, Andrea M.;Rodriguez, Estefania;McFadden, Catherine S.
确定过去的环境条件如何塑造珊瑚及其骨骼特征的演变提供了一个框架，用于预测它们的持久性及其在即将到来的全球变暖和海洋酸化下的非钙化亲属。在这里，我们表明，海洋地球化学，特别是文石-方解石海，驱动模式的形态进化的珊瑚虫（珊瑚，海葵），通过检查骨骼特征的背景下，一个强大的，时间校准的发育。与石珊瑚文石骨架的同质性相比，石珊瑚骨骼组成的不稳定性表明它们适应海洋化学变化的能力更强。珊瑚虫多样化的脉冲发生在大规模灭绝和珊瑚礁危机之后，随着热带珊瑚礁建造者的灭绝，海葵和蛋白质珊瑚填补了空白的生态位。不断变化的环境条件可能会减少文石造礁石珊瑚，但珊瑚虫的进化历史表明，其他群体将继续存在并在其之后多样化。
Identifying how past environmental conditions shaped the evolution of corals and their skeletal traits provides a framework for predicting their persistence and that of their non-calcifying relatives under impending global warming and ocean acidification. Here we show that ocean geochemistry, particularly aragonite-calcite seas, drives patterns of morphological evolution in anthozoans (corals, sea anemones) by examining skeletal traits in the context of a robust, time-calibrated phylogeny. The lability of skeletal composition among octocorals suggests a greater ability to adapt to changes in ocean chemistry compared with the homogeneity of the aragonitic skeleton of scleractinian corals. Pulses of diversification in anthozoans follow mass extinctions and reef crises, with sea anemones and proteinaceous corals filling empty niches as tropical reef builders went extinct. Changing environmental conditions will likely diminish aragonitic reef-building scleractinians, but the evolutionary history of the Anthozoa suggests other groups will persist and diversify in their wake.