ABSTRACT A central question in ecology and evolution is to understand why sexual
selection varies so much in strength across taxa; it has long been known that ecological …

Polyandry, by elevating sexual conflict and selecting for reduced male care relative to
monandry, may exacerbate the cost of sex and thereby seriously impact population fitness …

Insects display a staggering diversity of mating and social behaviours. Studying these
systems provides insights into a wide range of evolutionary and behavioural questions, such …

The rapidly evolving and often extraordinarily complex appearance of male genital
morphology of internally fertilizing animals has been recognized for centuries [1] …

Despite the key functions of the genitalia in sexual interactions and fertilization, the role of
sexual selection and conflict in shaping genital traits remains poorly understood. Seed …

Speciation has been a major focus of evolutionary biology research in recent years, with
many important advances. However, some of the traditional organising principles of the …

Traits that increase a male's fertilization success during sperm competition can be harmful to
females and therefore represent a source of sexual conflict. In this review, we consider the …

In the seed beetle Callosobruchus maculatus, the male intromittent organ is covered in
sharp spines that pierce the female copulatory tract wall during mating. Although the fitness …

Whether sexual selection facilitates or hampers the ability to plastically respond to novel
environments might depend on population structure, via its effects on sexual interactions …

Sexual selection and sexual conflict play central roles in driving the evolution of male and
female traits. Experimental evolution provides a powerful approach to study the operation of …