The long-term effects of sexual competition

Love rivals risk having offspring with more harmful mutations.

beetles_beetles mating
A female (lower left) and male (top right) Callosobruchus maculatus mating. The mating typically lasts for 2-5 minutes during which the male transfers 40,000-60,000 sperm in an ejaculate weighing about 3-5% of his own body weight. Credit: Mareike Koppik