Why would the babysitter eat some of the babies? In beaugregory damselfish, the answer may be that by snacking on some embryos, males tending their offspring make more oxygen available for the rest, according to a new study of cannibalism.
Giving males some extra food in the wild didn’t change their cannibalistic tendencies, says Adam Payne of the University of London.
Log in
Subscribers, enter your e-mail address for full access to the Science News archives and digital editions.