Bumblebees carbo-load on the fly

When foraging, bumblebees often have a choice to make. Do they go for the nectar that is the easiest to get, or should they work harder to get nectar with a higher sugar content? A new study found that the priority for the bumblebees is getting the most calories in the shortest amount of time, even at the expense of using up more energy. This trade-off ensures an immediate energy boost for the bumblebee colony, according to a study published October 24 in the journal iScience.

Hamish Symington. “Bumblebees can make decisions ‘on the fly’ about which nectar sources are the most energetically economical,” study co-author and University of Oxford bee biologist Jonathan Pattrick said in a statement. “By training bumblebees to visit artificial slippery flowers and using different ‘nectars’ with high, medium or low amounts of sugar, we found that they could make a trade-off between the energy content of the nectar and how difficult it was to access.

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