Predator presence and recent climatic warming raise body temperatures of island lizards
Predator presence and recent climatic warming raise body temperatures of island lizards
复制标题
捕食者的存在和最近的气候变暖导致岛屿蜥蜴的体温升高
DOI：
10.1111/ele.13671
复制
发表时间：
2021
期刊：
影响因子：
8.8
通讯作者：
Hasegawa Masami
中科院分区：
文献类型：
--
作者：
Landry Yuan Felix;Ito Shun;Tsang Toby P. N.;Kuriyama Takeo;Yamasaki Kaede;Bonebrake Timothy C.;Hasegawa Masami
在外温捕食者-猎物关系中，被捕食者逃避捕食依赖于与捕食者和被捕食者的热生物学有关的生理和行为反应。在日本的伊豆群岛，除了最近的气候变暖外，我们还研究了一种捕食蜥蜴在地质时期对蛇类捕食者存在的生理和温度反应。从1981年到2019年，觅食蜥蜴的体温总体上上升了1.3摄氏度，但蛇岛上的温度比无蛇岛屿高2.9摄氏度。我们还检测到了蛇捕食者对后腿长度的选择，这反过来又是只有在暴露于蛇捕食的蜥蜴种群中才是决定冲刺速度的主要因素。因此，我们发现，猎物的体温越高，猎物的冲刺速度就越快，而温度对蛇类捕食者来说不是最理想的，因此有助于逃避捕食。考虑到最近的气候变化，进一步变暖可能会无可挽回地改变这种关系以及其他温热的捕食者-猎物关系。
In ectothermic predator‐prey relationships, evasion of predation by prey depends on physiological and behavioural responses relating to the thermal biology of both predator and prey. On Japan's Izu Islands, we investigated a prey lizard's physiological and thermal responses to the presence of a snake predator over geologic time in addition to recent climatic warming. Foraging lizard body temperatures increased by 1.3 °C from 1981 to 2019 overall, yet were 2.9 °C warmer on snake islands relative to snake‐free islands. We also detected snake predator‐induced selection on hind leg length, which in turn is a major determinant for sprint speed only in lizard populations exposed to predation by snakes. Accordingly, we found that warmer prey body temperatures result in faster sprint speeds by the prey at temperatures suboptimal for the snake predator, and therefore contribute to escaping predation. Given recent climatic change, further warming could irrevocably alter this and other ectothermic predator‐prey relationships.