Although it is widely stated that both mating behavior and sperm traits are energetically
costly for males, we currently lack empirical estimates of the relative costs to males of pre …

Older males often perform poorly under post-copulatory sexual selection. It is unclear,
however, whether reproductive senescence is because of male age itself or the …

Many studies ask whether young or older males are better at acquiring mates. Even so, how
age affects reproductive success is still poorly understood because male age and mating …

Temperature experienced during early development can affect a range of adult life-history
traits. Animals often show seemingly adaptive developmental plasticity—with animals reared …

Fight outcomes often affect male fitness by determining their access to mates. Thus,“winner-
loser” effects, where winners often win their next contest while losers tend to lose, can …

Mate choice is one of the main components of sexual selection, with females usually
considered to be the selective sex. Male status is an important factor that affects female …

Risso's dolphins (Grampus griseus) in the Azores maintain a sexually stratified community
with males forming stable clusters, whereas females tend to associate in temporally stable …

Past reproductive effort allows males to assess their ability to acquire mates, but it also
consumes resources that can reduce their future competitive ability. Few studies have …

The study of mate choice and sex roles has come a long way from the assumption that only
males are promiscuous and females are coy. However, fragments of this mindset might still …

The study of mate choice and sex roles has come a long way from the assumption that only
males are promiscuous and females are coy. However, fragments of this mindset might still …