The Evolution of Life History Traits and Their Thermal Plasticity in Daphnia

Few studies have explored the relative strength of ecogeographic versus lineage-specific effects on a global scale, particularly for poikilotherms, those organisms whose internal temperature varies with their environment. Here, we compile dataset life history traits in Daphnia, at species-and population-level, and use data to parse influences climate. We also compare thermal response (plasticity) dependence climate, temperature, precipitation, latitude. found that mode evolution but most often follows random walk model evolution. conclude trait Daphnia is not strongly species-specific ecogeographically distinct, suggesting should be understood population level possibly other poikilotherms.