likely to see and fight them off, which could potentially kill the wasp. Furthermore, eggs served as a source of energy due to the costs of parental care, such as reduced efficiency in feeding and energy used to fend off attackers. R. tristis males also guard adopted broods without a higher rate of cannibalization, suggesting that they cannot discriminate between their own eggs and unrelated ones. See also Child cannibalism Child sacrifice Human placentophagy References Animal cannibalism