Evolutionary rates of zooxanthellate and azooxanthellate corals and their controlling factors

我们的目标是确定硬核珊瑚进化速率的潜在原因。硬核动物有两种根本不同的生态系统：一种是从其组织中的共生藻类（虫黄酸珊瑚）中获取大量营养，另一种完全依赖浮游动物来喂养建议Kiessling 2（偶黄酸珊瑚）。我们将分析这些不同的生态模式和相关特征的进化后果，如殖民性和环境亲和力。虽然光共生在生物层面上显然是有益的，但就进化利益而言，这是一个权衡，因为虫黄藻礁珊瑚似乎对环境变化更敏感，而且往往比其他珊瑚更容易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。珊瑚的多样化、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的进化变化进行比较，以了解更多有利于这些不同珊瑚扩散和消亡的环境。因此，我们期望提高对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.