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 …

Postcopulatory sexual selection (PCSS), comprised of sperm competition and cryptic female
choice, has emerged as a widespread evolutionary force among polyandrous animals …

ABSTRACT A central paradigm in evolutionary biology is that the fundamental divergence in
the fitness interests of the sexes ('sexual conflict') can lead to both the evolution of sex …

Across internally fertilising species, males transfer ejaculate proteins that trigger wide-
ranging changes in female behaviour and physiology. Much theory has been developed to …

Sperm production and allocation strategies have been a central concern of sperm
competition research for the past 50 years. But during the 'sexual cascade'there may be …

Ageing and sexual selection are intimately linked. There is by now compelling evidence
from studies performed across diverse organisms that males allocating resources to mating …

Dietary restriction during development can affect adult body size and condition. In many
species, larger (high-condition) males gain higher mating success through male-male …

Declining ejaculate performance with male age is taxonomically widespread and has broad
fitness consequences. Ejaculate success requires fully functional germline (sperm) and …

Males have finite resources to spend on reproduction. Thus, males rely on a 'time investment
strategy'to maximize their reproductive success. For example, male Drosophila …

Ejaculate proteins are key mediators of post-mating sexual selection and sexual conflict, as
they can influence both male fertilization success and female reproductive physiology …