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​Photo by Alex Wild @alexanderwild.com












The glory of a summer feeder experiment

8/21/2018

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Things have been pretty quiet here in the bee blog for a good reason - July/August is the time of year when we try to squeeze out a feeder experiment.

This involves training bees from a hive to forage at feeders in known locations. The feeders are usually on brightly colored tripods, either yellow or blue, and placed under a matching umbrella to provide shade because Virginia in July is hot.

​Here Brad, who worked this summer as a lab tech and began a Ph.D. this August, records bee visits under the yellow umbrella next to the yellow tripod, upon which is a feeder. Just a few feet away is the blue umbrella / tripod / feeder combo.

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During the training process, the bees become marked with individual number tags, like little football player jerseys.

The marking is part of the fun and requires a steady hand and an appreciation for the whimsy of seeing honey bees with little number tags.

Molly, undergraduate researcher, applies clear nail polish to the thorax of a bee and then places the number tag. The key is to do this without unduly upsetting the bee so that she still associates the feeder with a positive foraging experience.

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Once the bees are marked and trained to forage at a designated feeder, we Do Things to them.

​In particular, for this experiment, after we had trained two cohorts of bees to forage reliably at 2 different feeders, set equidistant from the lab, we exposed one of the cohorts to a treatment (foraging on a chemical within a 1M sucrose solution) while keeping the other cohort as the control group (1M sucrose solution forage).

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We tracked a number of metrics during the experiment, and most of them required someone to spend many hours standing by a feeder with a clipboard. Here Molly and Jack, another undergraduate researcher, record foraging visits from marked bees. Science is nothing if not total glamour.
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