Study finds carrying pollen heats up bumble bees, raises new climatechange questions ncstate RSocPublishing
Spend a bit of time at a nearby flower patch and you will spot a fuzzy bumble bee with yellow bumps on her back legs. These yellow bumps are solid packets ofthat have been carefully collected during the bees' foraging trip for transport back to their nests.
Specifically, the researchers found that bee body temperatures rose 0.07°C for every milligram of pollen that they carried, with fully laden bees being 2°C warmer than unladen bees.and other ectotherms, the body temperature of a bumble bee is mostly determined by the environment. Among bees, bumble bees are exceptionally cold tolerant and will shiver to warm up during cold days. However, not much is known about how they can tolerate heat.
. As environmental temperatures increase, the bees' operational range of temperatures could shrink significantly."is on the decline across the world, particularly in areas that are warming up due to climate change. But the exact mechanics of how climate change is impacting bumble bees are not yet fully understood. This finding could be one piece of that puzzle.
"We need to know how bumble bees may change their behavior, to better understand how this could affect how much pollen they collect and how much pollination they perform during hot days," says Elsa Youngsteadt, a professor in applied ecology and supervisor of Malia's research.
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