The thermal response of the amphipod Sunamphitoe parmerong was contrasted between unacclimated ‘wild’ and acclimated populations. Brooding females were allocated to 17 °C or 23 °C treatments and their progeny developed to adulthood at the same temperature. Tolerance to acute thermal challenge (26–36 °C) was determined. The 17 °C and 23 °C acclimated S. parmerong had a 0.45 and 0.64 risk of death compared to the unacclimated individuals. The upper lethal temperature (LT₅₀) was 27.4 °C for the unacclimated group and 29.6 °C and 30.4 °C for the 17 °C and 23 °C acclimated groups, respectively. Acclimation shifted their LT₅₀ by 2.2 °C and 3 °C, respectively. The wild population exhibited high variability in thermal tolerance, potentially due to their environmental history and greater diversity of genotypes. After acclimation S. parmerong had decreased variability in thermal tolerance and that of the 23 °C group shifted by 1 °C compared with the 17 °C group. These results indicate developmental phenotypic plasticity or differential survival of resilient progeny as potential mechanisms to facilitate persistence in a warming ocean.

在未适应的“野生”种群和适应的种群之间，两栖类双翅目Sunamphitoe parmerong的热响应形成了对比。育雏雌性被分配到17°C或23°C处理，并且其子代在相同温度下发育成年。确定了对急性热挑战（26–36°C）的耐受性。与未驯化的个体相比，在17°C和23°C的驯化条件下，帕玛隆链球菌有0.45和0.64的死亡风险。未适应组的最高致死温度（LT ₅₀）为27.4°C，适应17°C和23°C的组的最高致死温度分别为29.6°C和30.4°C。适应转变了他们的LT ₅₀分别降低2.2°C和3°C。野生种群表现出较高的热耐受性变异性，这可能是由于其环境史和基因型的更大多样性。适应后，帕尔默沙门氏菌的耐热性变异性降低，与17°C组相比，23°C组的耐热性变异性降低了1°C。这些结果表明发育表型可塑性或弹性后代的差异存活是促进持续变暖海洋的潜在机制。