Beetle Moms Make Anti-Aphrodisiac to Keep Dads Focused on Parenting

“Not tonight, honey,” says the female burying beetle, chewing up a mouthful of mouse carcass before spitting it into the mouth of a begging larva.

For the first few days of their babies’ lives, burying beetles co-parent. They devote themselves to keeping their squirming larvae alive. That means mating and laying more eggs would be a waste of energy. And to make sure males get that message, females emit a pheromone that turns them off.

“It is quite surprising,” says University of Ulm be

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