Stability of breeding and non-breeding groups of golden-headed lion tamarins (Leontopithecus chrysomelas)

In Callitrichid primates, offspring remain in their natal group beyond the age of sexual maturity, increasing the group’s inclusive fitness by cooperatively rearing their siblings. Contraception of the dominant female in these groups may alter the associated costs and benefits of this cooperative rearing in such a way that offspring themselves attempt to breed when […]