Evolutionary Novelty Is Concentrated at the Edge of Coral Species Distributions
Evolutionary Novelty Is Concentrated at the Edge of Coral Species Distributions
复制标题
DOI：
10.1126/science.1188947
复制
发表时间：
2010-06-18
期刊：
影响因子：
56.9
通讯作者：
Pandolfi, John M.
中科院分区：
文献类型：
--
作者：
Budd, Ann F.;Pandolfi, John M.
保护优先级是根据物种丰富度、特有性和威胁来计算的。然而，这些因素排名靠前的区域可能并不代表具有最大进化潜力的区域。在加勒比珊瑚礁的主要复合体中分析了地理和进化创新之间的关系，其中形态和遗传数据与物种差异一致。基于更新世珊瑚的几何形态测量和现代珊瑚群的遗传特征，我们发现从加勒比海中心到边缘形态差异各不相同，并且我们表明谱系在连接良好的中心位置是静态的，但在基因流动有限的边缘区域则分裂或融合。因此，珊瑚的保护工作不仅应关注多样性中心，还应关注物种范围和种群连通性的外围区域。
Conservation priorities are calculated on the basis of species richness, endemism, and threats. However, areas ranked highly for these factors may not represent regions of maximal evolutionary potential. The relationship between geography and evolutionary innovation was analyzed in a dominant complex of Caribbean reef corals, in which morphological and genetic data concur on species differences. Based on geometric morphometrics of Pleistocene corals and genetically characterized modern colonies, we found that morphological disparity varies from the center to the edge of the Caribbean, and we show that lineages are static at well-connected central locations but split or fuse in edge zones where gene flow is limited. Thus, conservation efforts in corals should focus not only on the centers of diversity but also on peripheral areas of species ranges and population connectivity.