Simon F.S. Li Marine Science Laboratory, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China.
Sci Rep. 2022 Oct 15;12(1):17309. doi: 10.1038/s41598-022-21567-9.
Global climate change is leading to shifts in abiotic conditions. Short-term temperature stresses induced by marine heatwaves (MHWs) can affect organisms both during and after the events. However, the recovery capacity of organisms is likely dependent on the magnitude of the initial stress event. Here, we experimentally assessed the effect of MHW magnitude on behavioural and physiological responses of a common marine gastropod, Lunella granulata, both during and after the MHW. Self-righting behaviours tended to become faster under moderate MHWs, whereas there was a trend toward these behaviours slowing under extreme MHWs. After a recovery period at ambient temperatures, individuals that experienced extreme MHWs showed persistent small, but not significant, negative effects. Survival and oxygen consumption rates were unaffected by MHW magnitude both during and after the event. While extreme MHWs may have negative behavioural consequences for tropical marine gastropods, their physiological responses may allow continued survival.
全球气候变化正在导致非生物条件的变化。海洋热浪（MHW）引起的短期温度压力会在事件发生期间和之后影响生物。然而，生物的恢复能力可能取决于初始压力事件的大小。在这里，我们通过实验评估了 MHW 强度对常见海洋腹足动物 Lunella granulata 在 MHW 期间和之后的行为和生理反应的影响。适度的 MHW 会使身体自正能力倾向于加快，而在极端 MHW 下，这些行为则有减慢的趋势。在恢复到环境温度后，经历过极端 MHW 的个体表现出持续的、微小但不显著的负面影响。在事件发生期间和之后，MHW 的强度都不会影响生存率和耗氧量。虽然极端 MHW 可能对热带海洋腹足动物产生负面的行为后果，但它们的生理反应可能允许其继续生存。
