While eating, these tiny worms release chemicals to lure their next meal

Swiss scientists found that rootworms were attracted to soil containing predatory nematodes

Nematode worm

MEAL PLAN  Nematode juveniles (arrows) infect and kill many soil insects, like this western corn rootworm. As the nematodes feed and reproduce in a rootworm, they release smells that attract new prey for hungry young.

Christelle Robert, University of Bern

These predatory worms have figured out meal delivery.