Correlates of population genetic differentiation in marine and terrestrial environments

作者：Lauren M. Schiebelhut, Michael N Dawson · 发表于：Journal of Biogeography · 年份：2018 · DOI：10.1111/jbi.13437 · 被引用次数：19 · 研究领域：Genetic diversity and population structure、Environmental DNA in Biodiversity Studies、Evolution and Genetic Dynamics

Abstract Aim Theory predicts that differences in phylogeographic structure between species should be related to differences in life history, environment, and evolutionary time. Reviews of empirical studies suggest sometimes complex interactions and possibly a preponderance of exceptions to the predicted relationship that greater population genetic differentiation results from lower dispersal potential, as a function of life history. We apply an analytical framework, which controls for effects of environment and time, to test the hypothesis that contrasts in population genetic differentiation are proportional to contrasts in life history traits. Location Global. Methods We conducted a meta‐analysis using contrasts of life history traits and population genetic differentiation between synchronously diverging codistributed ( SDC ) taxa. Because SDC taxa experienced the same environment at the same time, the effects of time and environment are effectively controlled when analysing other causes of genetic differentiation within SDC taxa. This offers the opportunity to rigorously test whether traits favouring greater dispersal potential—such as fecundity, census population size, and duration of the dispersive stage—do lead to lower population genetic differentiation. Results We find a strong inverse relationship between dispersal potential and population genetic differentiation, consistent with predictions. SDC species pairs with similar dispersal potential show similar population g...