Non-warning odors trigger innate color aversions — as long as they are novel

  title={Non-warning odors trigger innate color aversions — as long as they are novel},
  author={Walter Jetz and Candy Rowe and Tim Guilford},
Warning signals made by unpalatable insects to potential predators commonly target more than one sense: such signals are ‘‘multimodal.’’ Pyrazines are odors produced by warningly colored insects when attacked, and have been shown to interact with food coloration, biasing avian predators against novel and typically aposematic food. However, at present it is not known whether this is an adaptation by prey to exploit a general feature of avian psychology, or an evolutionary response by birds to… CONTINUE READING
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