The distinct reproductive roles of males and females, which for many years were
characterised in terms of competitive males and choosy females, have remained a central …

Conventional sex roles imply caring females and competitive males. The evolution of sex
role divergence is widely attributed to anisogamy initiating a self‐reinforcing process. The …

The book aims to integrate our understanding of mammalian societies into a novel synthesis
that is relevant to behavioural ecologists, ecologists, and anthropologists. It adopts a …

Healthy males are likely to have higher mating success than unhealthy males because of
differential expression of condition-dependent traits such as mate searching intensity …

Many multicellular eukaryotes have reasonably high per-generation mutation rates.
Consequently, most populations harbor an abundance of segregating deleterious alleles …

The elaboration and diversification of sexually selected weapons remain poorly understood.
We argue that progress in this topic has been hindered by a strong bias in sexual selection …

Studies of mate choice in vertebrates have focused principally on birds, in which male
ornaments are often highly developed, and have shown that females commonly select …

Mate choice studies routinely assume female preferences for indicators of high quality in
males but rarely consider developmental causes of within-population variation in mating …

Sexual selection has the potential to decrease mean fitness in a population through an array
of costs to nonsexual fitness. These costs may be offset when sexual selection favors …

The handicap principle is a simple but powerful metaphor that has had a major impact on
how biologists study and understand sexual selection. Here, I show that its application to …