1. Ecology
  2. Evolutionary Biology
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Ecology: Keeping it fresh

  1. Jonathan L Klassen  Is a corresponding author
  1. University of Connecticut, United States
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Cite this article as: eLife 2019;8:e48268 doi: 10.7554/eLife.48268
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Beewolf eggs emit nitrogen oxides to protect against fungal contamination.

When a beewolf wasp lays an egg on a paralyzed honeybee, the egg produces volatile nitrogen oxides (blue gas) that prevent the honeybee from being contaminated by fungi, thus allowing the beewolf larva to feed on it (Left). Without such protection, the honeybee quickly becomes overgrown by fungi (Right). Image credit: Virge Kask (CC BY 4.0).

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