Sexual Cannibalism - When Dates Become Dinner
But this leads to a certain temptation for the females. Why not summon males whenever she's hungry, rather than only when she's interested in mating?
Dr. Kate Barry from the Biological Sciences Department of Macquarie University in Sydney, Australia, tested this idea - known as the Femme Fatale hypothesis. She found that females are, in fact, quite restrained in using this advantage, and only summon males exclusively for dinner when they are on the edge of starvation.