Females often choose their mates, instead of mating at random, even when a father contributes nothing but genes to his offspring. Costly female preferences for males with exaggerated traits that ...

AbstractThe evolution of reproductive isolation among populations is often the result of selective forces. Among those, parasites exert strong selection on host populations and can thus also ...

According to a new study, the first louse to take up residence on a mammalian host likely started out as a parasite of birds. That host-jumping event tens of millions of years ago began the long ...

Most of life’s diversity on Earth is found in the tropics and such as occurs on the African continent. Stable climatic conditions have allowed many species to coexist and fine-tune their behaviours ...

Predator and prey maintain a close relationship to each other: if one evolves, the other must keep pace. Such coevolution and its accompanying selection pressure leads to mutual adaptation of the two ...

UCSC researchers collected scent compounds from woodland star flowers at field sites across the western United States. (Photo by Magne Friberg) Greya politella Two closely related moth species ( above ...