In species with separate sexes, females and males often differ in their morphology,
physiology and behaviour. Such sex‐specific traits are functionally linked to variation in …

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 …

Behavioral interference between species, such as territorial aggression, courtship, and
mating, is widespread in animals. While aggressive and reproductive forms of interspecific …

Animals often need to signal to attract mates and behavioural signalling may impose
substantial energetic and fitness costs to signallers. Consequently, individuals often …

The important role that mate choice plays in the lives of animals is matched by the large and
active research field dedicated to studying it. Researchers work on a wide range of species …

Under the superorganism concept, insect societies are so tightly integrated that they
possess features analogous to those of single organisms, including collective cognition. If …

The year 2021 marks the 150th anniversary of the publication of Charles Darwin's
extraordinary book The Descent of Man and Selection in Relation to Sex. Here, we review …

Humans often mate with those resembling themselves, a phenomenon described as positive
assortative mating (PAM). The causes of this attract broad interest, but there is little …

Animals often need to invest significantly in mating behaviour in order to successfully mate.
However, the expression of mating behaviour can be costly, especially in unfavourable …

Humans have disproportionately affected the habitat and survival of species through
environmental contamination. Important among these anthropogenic influences is the …