Are extreme high temperatures at low or high latitudes more likely to inhibit the population growth of a globally distributed aphid

摘要: Abstract Although climate warming can increase both mean temperature and its variability, it is often the effects of on short periods extreme temperatures that are expected to have particularly large physiological ecological consequences. Understanding vulnerability organisms at various latitudes extremes thus critical for understanding regional biodiversity conservation ecosystem management. While previous studies shown thermal responses depend regimes previously experienced, this issue has not been considered much when comparing different latitudes. To fill gap, here we manipulated combinations amplitude duration daily high simulate conditions We tested those life-history traits fitness a globally-distributed aphid species, Rhopalosiphum padi. compared our results with better understand extent which these affect conclusions based comparisons under temperatures. As consequence asymmetrical performance curves, hypothesized higher maximum would cause strong negative effects. Our showed caused substantial decreases in relative predictions from Specifically, regime reflecting mid-latitude location had larger impacts development, reproduction population than representing lower location. These findings implications across increasingly frequent heat events ongoing warming.