Available Data For: Simulated Heat Waves Decrease the Upper Thermal Tolerance of Bumblebees

This research study estimates the upper critical thermal limits (Critical Thermal Maximum (CTmax) and Heat Coma Temperature (HCT)), of Bombus terrestris audax and investigates whether the critical thermal maxima of experimental individuals is modified following exposure to simulated heat waves of different magnitude. CTmax was recorded between 48.9-52.7 ºC, while the HCT ranged between 50.7-53.4 ºC. The upper thermal limits of bumblebee workers decreased significantly after being exposed to a single heat wave of 34-36 ºC, while individuals exposed to a heat wave of 30-32 ºC showed no significant changes in their thermal tolerance. This indicates that B. terrestris lacks a capacity to acclimate in the face of extreme weather events. This file includes the protocols used for the measurement of thermal tolerance and acclimation capacity of bumblebee workers. Furthermore, it includes the available data regarding thermal tolerance (CTmax) values and codes that were used for the analyses.

本研究测定了欧洲熊蜂澳达克斯亚种（Bombus terrestris audax）的临界高温上限（Critical Thermal Maximum, CTmax）与热昏迷温度（Heat Coma Temperature, HCT），并探究了实验个体在经历不同强度模拟热浪后，其临界高温上限是否会发生改变。本研究测得的CTmax介于48.9~52.7℃之间，HCT则处于50.7~53.4℃区间。当熊蜂工蜂暴露于34~36℃的单次热浪环境后，其耐热上限显著降低；而暴露于30~32℃热浪环境的个体，其耐热性未出现显著变化。上述结果表明，地熊蜂（Bombus terrestris）不具备应对极端高温事件的热驯化能力。本数据集包含了用于测定熊蜂工蜂耐热性与热驯化能力的实验方案，同时收录了相关耐热性（CTmax）实测数据与分析所用的代码。