Fig 1. Wasp exposure causes ethanol seeking and long-term memory formation in fruit flies.

Flies are cohabitated with wasps for either 3 days (acute assay) or 4 days (memory assay) (A). At the end of the exposure period flies are given two food options, ethanol and control food, either in the presence of wasps (B) or in the absence of wasps (C). CS flies as well as memory mutants have an acute wasp response where the ethanol food is preferred as an oviposition substrate (D). However, only CS flies maintain ethanol preference during the wasp memory assay (E). Error bars indicate bootstrap 95% confidence intervals.