Lady flies can decide who will father their young
Thursday, April 11, 2013 - 12:30
in Biology & Nature
Female flies choose whose sperm they want based on male mating effort. Females in the animal kingdom have many methods available to them to help bias male paternity. One such process is displayed by Euxesta bilimeki, a species of Ulidiid fly, whose females expel and then consume male ejaculate after copulation.