Evolutionary rates of zooxanthellate and azooxanthellate corals and their controlling factors

我们的目标是确定的根本原因的进化率内石珊瑚。硬珊瑚有两种根本不同的生态：一种是从共生藻类（虫黄藻珊瑚）中获取相当大比例的营养，另一种是完全依赖浮游动物喂养基斯林2号提案（偶氮虫黄藻珊瑚）。我们将分析这些不同的生态模式和相关特征，如殖民性和环境亲和力的进化后果。虽然光共生在有机体层面上显然是有益的，但在进化利益方面存在权衡，因为虫黄藻珊瑚礁珊瑚似乎对环境变化更敏感，并且往往比其他珊瑚更强烈地受到灭绝事件的影响。进化速率是通过采样标准化生物多样性动态和分子方法的新组合来测量的。多样化，物种形成和灭绝模式的变化将与海洋环境的全球变化和生态学的进化变化进行比较，以更多地了解有利于这些不同珊瑚的传播和消亡的情况。因此，我们希望提高现代珊瑚灭绝风险的估计。

Our goal is to identify the underlying causes of evolutionary rates within scleractinian corals. Scleractinians have two fundamentally different ecologies: Those that retrieve a substantial proportion of their nutrition from symbiotic algae in their tissue (zooxanthellate corals) and those that entirely depend on zooplankton for feeding Proposal Kiessling 2 (azooxanthellate corals). We will be analyzing the evolutionary consequences of these different ecological modes and correlated traits such as coloniality and environmental affinity. While photosymbiosis is clearly beneficial at the organismic level, there is a trade-off in terms of evolutionary benefit because zooxanthellate reef corals seem to be more sensitive to environmental change and tended to be affected more strongly by extinction events than other corals. Evolutionary rates are measured by a novel combination of samplingstandardized biodiversity dynamics and molecular methods. The changes in diversification, speciation, and extinction patterns will be compared with global changes in the marine environment and evolutionary changes in ecology to learn more about the circumstances favoring the spread and demise of these different corals. Thereby, we expect to improve estimates of extinction risk of modern corals.