Temperature Regulation in the Bumblebee Bombus vagans: A Field Study

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Science  14 Jan 1972:
Vol. 175, Issue 4018, pp. 185-187
DOI: 10.1126/science.175.4018.185


Bombus vagans forages for nectar at 5°C in shade and at 31°C in sunshine. The production of heat while the bumblebee is on flowers, at ambient temperatures below 24°C, helps to maintain a thoracic temperature that is near the minimum for flight between flowers. However, at ambient temperatures above 24°C the thoracic temperature is no longer regulated at 32° to 33°C and rises.

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