Abstract：
Changes in environmental temperature may induce variations in thermal tolerance and sensitivity in ectotherm organisms. These variations generate plastic responses that can be analyzed by examining their Thermal Performance Curves (TPCs). Additionally, some performance traits, like locomotion, could be affected by other factors such as biological interactions (e.g., predator-prey interaction). Here, we evaluate if the risk of predation modifies TPCs in Mendoza four-eyed frog (Pleurodema nebulosum, Burmeister, 1861) and Guayapa\'s four-eyed frog (Pleurodema guayapae, Barrio, 1964), two amphibian species that occur in ephemeral ponds in arid environments. We measured thermal tolerances and maximum swimming velocity at six different temperatures in tadpoles under three situations: control, exposure to predator chemical cues, and exposure to conspecific alarm cues. TPCs were fitted using General Additive Mixed Models. We found that curves of tadpoles at risk of predation differed from those of control mainly in thermal sensitivity parameters. Our work confirms the importance of biotic interactions have in thermal physiology.
摘要：
环境温度的变化可能会引起外生生物的耐热性和敏感性的变化。这些变化产生可通过检查其热性能曲线(TPC)来分析的塑性响应。此外,一些表现特征，比如运动，可能会受到其他因素的影响，如生物相互作用(例如，捕食者-猎物相互作用)。这里,我们评估捕食的风险是否会改变门多萨四眼青蛙(胸膜水肿，Burmeister,1861年)和瓜亚帕的四眼青蛙(Pleurodemaguayapae，巴里奥,1964),在干旱环境中的短暂池塘中出现的两种两栖动物。我们在三种情况下测量了t在六种不同温度下的耐热性和最大游泳速度：控制，暴露于捕食者的化学线索，以及暴露于特定的警报提示。使用一般添加剂混合模型拟合TPC。我们发现，有捕食风险的t的曲线与对照组的曲线不同，主要是在热敏感性参数上。我们的工作证实了生物相互作用在热生理学中的重要性。
