For sexual selection to act on a given sex, there must exist variation in the reproductive
success of that sex as a result of differential access to mates or fertilisations. The …

Density-dependent selection, which promotes contrasting patterns of trait means at different
population densities, has a long history in population genetics and ecology. The unifying …

Male genitalia exhibit patterns of divergent evolution driven by sexual selection. In contrast,
for many taxonomic groups, female genitalia are relatively uniform and their patterns of …

Exaggerated weapons of sexual selection often diverge more rapidly and dramatically than
other body parts, suggesting that relevant agents of selection may be discernible in …

Males must partition their limited reproductive investments between traits that promote
access to females (sexual ornaments and weapons) and traits that enhance fertilization …

Understanding the impact of demographic and ecological factors on the strength of sexual
selection is pivotal to predict eco‐evolutionary dynamics in populations facing …

Sexual traits may be selected during multiple consecutive episodes of selection, occurring
before, during, or after copulation. The overall strength and form of selection acting on traits …

Selection pressure is an important force in sha** the evolution of vertebrate brain size
among populations within species as well as between species. The evolution of brain size is …

Rapidly changing environments impose novel selection pressures on organisms, and
sometimes adaptive phenotypic plasticity allows organisms to survive and reproduce in the …

Competition over mates is a powerful force sha** trait evolution. For instance, better
cognitive abilities may be beneficial in male-male competition and thus be selected for by …