Sexual selection has been studied as a major evolutionary driver of animal diversity for roughly 50 years. Much evidence indicates that competition for mates favors elaborate signaling traits. However ...

In many animal species, cognitive abilities are under strong natural selection because decisions about foraging, habitat choice and predator avoidance affect fecundity and survival. But how has sexual ...

When males are forced to compete for females, new species form more rapidly. This has been shown in a new study where the researchers compared beetles allowed to mate freely with groups of the same ...