Twenty years ago, a seminal paper summarized the role of sexual selection in speciation as
the coordinated evolution of (male) courtship signals and (female) preferences leading to …

Genitalia are conspicuously variable, even in closely related taxa that are otherwise
morphologically very similar. Explaining genital diversity is a longstanding problem that is …

This textbook helped to define the field of Behavioural Ecology. In this fourth edition the text
has been completely revised, with new chapters and many new illustrations and full colour …

Male genitalia show patterns of divergent evolution, and sexual selection is recognised as
being responsible for this taxonomically widespread phenomenon. Much of the empirical …

Rapid evolution of reproductive traits has been attributed to sexual selection arising from
interaction between the sexes. However, little is known about the nature of selection driving …

Edible and seminal gifts that male arthropods transfer to their mates range from important
material donations to items that provide little direct benefit. Recent reviews and research …

Many hypotheses have been proposed to explain why male intromittent genitalia
consistently tend to diverge more rapidly than other body traits of the same individuals in a …

Genital coevolution between the sexes is expected to be common because of the direct
interaction between male and female genitalia during copulation. Here we review the …

Morphological integration describes the degree to which sets of organismal traits covary with
one another. Morphological covariation may be evaluated at various levels of biological …

The interests of males and females over reproduction rarely coincide and conflicts between
the sexes over mate choice, mating frequency, reproductive investment, and parental care …