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首页> 外文期刊>Journal of Insect Physiology >Thermoregulation in endothermic dung beetles (Coleoptera: Scarabaeidae): effect of body size and ecophysiological constraints in flight
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Thermoregulation in endothermic dung beetles (Coleoptera: Scarabaeidae): effect of body size and ecophysiological constraints in flight

机译:吸热虫的体温调节(鞘翅目:Scarabaeidae):机体大小和飞行中的生态生理限制的影响

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摘要

We explore the physiological constraints of body temperature as related to body mass and ambient temperature during flight in endothermic dung beetles showing a mass-related breakpoint where species show strong vs. weak endothermy. We found two different strategies in the dung beetles prior to flight; larger beetles (1.9 g) elevate and maintain their body temperature (T(b)) at levels well above ambient temperature (T(a)) whereas smaller beetles' (1.9 g) T(b) tends to conform with T(a). Physiological constraints analysis revealed a constant maximum tolerated temperature (in flight) of 42 degrees C and a minimum temperature for flight of around 25 degrees C. These, with body mass, may play a role in thermal niche partitioning and geographical distribution patterns.
机译:我们探索吸热虫在飞行过程中与体重和环境温度相关的体温生理限制,这些甲虫显示出与质量有关的断点,其中物种表现出强吸热与弱吸热。在飞行之前,我们在粪甲虫中发现了两种不同的策略。较大的甲虫(> 1.9 g)升高并保持其体温(T(b))处于远高于环境温度(T(a))的水平,而较小的甲虫(<1.9 g)T(b)倾向于与T(一种)。生理限制分析表明,恒定的最高耐受温度(飞行中)为42摄氏度,飞行的最低温度约为25摄氏度。这些物质具有体重,可能在热生态位分配和地理分布格局中起作用。

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