News Life 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 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 Share this:EmailFacebookTwitterPinterestPocketRedditPrint By Richard Kemeny May 4, 2023 at 2:00 pm For many locusts, life in a swarm is a picnic. Crowded conditions create a locust-eat-locust world.