Calls vs. balls: Monkeys with more impressive roars produce less sperm
Thursday, October 22, 2015 - 12:30
in Psychology & Sociology
Evolutionary 'trade-off' between size of throat and testes discovered in howler monkeys furthers Darwin's theory of sexual selection and corresponds to mating systems: males with larger throats often have exclusive access to females, while those with larger testes share mates.