Different climate resilience between China and Japan groups
Natural selection analysis demonstrated that different populations have differential temperature adaptive capacity at the genetic level. We also obtained evidence of differences in temperature adaptation between the China and Japan populations at the macro level through species distribution model. The different change in the potential distributions for two groups under climate change may reflect the different thermal ability between the China and Japan groups. The China group contains different thermal adaptation populations and may have strong adaptive capacity adaptation to future climate change. However, the Japan group with stenothermal character shows a weak adaptive capacity to climate change. Our finding is different from the predicted distribution of this species previously reported by Zhang et al. (2019), who did not consider genetic differences within this species. Cryptic diversity clearly affects global climate change projections. In a previous study, Bálint et al. (2011) showed that without discerning intraspecific genetic variation and cryptic diversity, the effects of global climate change were likely to be drastically underestimated. From our findings, the combination of phylogeographic data and species distribution model provide new understanding of the evolutionary trajectories of species under changing environmental conditions.