Landscape Ecology, Institute of Terrestrial Ecosystems, ETH Zürich, CH8092 Zürich, Switzerland.
Swiss Federal Institute for Forest, Snow and Landscape Research WSL, CH8903 Birmensdorf, Switzerland.
Proc Biol Sci. 2021 Sep 29;288(1959):20211574. doi: 10.1098/rspb.2021.1574.
Generating genomic data for 19 tropical reef fish species of the Western Indian Ocean, we investigate how species ecology influences genetic diversity patterns from local to regional scales. We distinguish between the , and components of genetic diversity, which we subsequently link to six ecological traits. We find that the and components of genetic diversity are strongly correlated so that species with a high total regional genetic diversity display systematically high local diversity. The and diversity components are negatively associated with species abundance recorded using underwater visual surveys and positively associated with body size. Pelagic larval duration is found to be negatively related to genetic diversity supporting its role as a dispersal trait in marine fishes. Deviation from the neutral theory of molecular evolution motivates further effort to understand the processes shaping genetic diversity and ultimately the diversification of the exceptional diversity of tropical reef fishes.
我们生成了西印度洋 19 种热带珊瑚鱼的基因组数据，以研究物种生态如何影响从局部到区域尺度的遗传多样性模式。我们区分了遗传多样性的 、 和 三个组成部分，随后将其与六个生态特征联系起来。我们发现，遗传多样性的 和 组成部分密切相关，因此具有高总区域遗传多样性的物种通常具有较高的局部多样性。多样性的 和 组成部分与使用水下视觉调查记录的物种丰度呈负相关，而与体型呈正相关。发现浮游幼体持续时间与遗传多样性呈负相关，支持其在海洋鱼类中作为扩散特征的作用。对分子进化中性理论的偏离促使人们进一步努力理解塑造遗传多样性的过程，并最终理解热带珊瑚鱼异常多样性的多样化。
