Caffeine in floral nectar enhances a pollinator's memory of reward.

  title={Caffeine in floral nectar enhances a pollinator's memory of reward.},
  author={Geraldine A Wright and Daniel D. Baker and Mary J. Palmer and Daniel Stabler and Julie A. Mustard and Eileen F. Power and Anne M. Borland and Philip C Stevenson},
  volume={339 6124},
Plant defense compounds occur in floral nectar, but their ecological role is not well understood. We provide evidence that plant compounds pharmacologically alter pollinator behavior by enhancing their memory of reward. Honeybees rewarded with caffeine, which occurs naturally in nectar of Coffea and Citrus species, were three times as likely to remember a learned floral scent as were honeybees rewarded with sucrose alone. Caffeine potentiated responses of mushroom body neurons involved in… CONTINUE READING


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