Swarming locusts can deploy a chemical to avoid being cannibalized

The “don’t-eat-me” compound signals that the insects have become a toxic treat

A close-up photo of a locust biting into another locust. It is frankly unsettling.

For some locusts, like these Locusta migratoria, their fellow insects are on the menu. Juvenile migratory locusts give off a pheromone that stops their companions from cannibalizing them, a new study suggests.

Benjamin Fabian/MPI for Chemical Ecology

For many locusts, life in a swarm is a picnic. Crowded conditions create a locust-eat-locust world.