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

Deciphering the genetic and neurobiological underpinnings of social behavior is a difficult
task. Simple model organisms such as C. elegans, Drosophila, and social insects display a …

Postcopulatory sexual selection can select for sperm allocation strategies in males [1, 2], but
males should also strategically allocate nonsperm components of the ejaculate [3, 4], such …

Female promiscuity can generate postcopulatory competition among males, but it also
provides the opportunity for exploitation of rival male ejaculates. For example, in many insect …

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 …

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 …

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

How females store and use sperm after remating can generate postcopulatory sexual
selection on male ejaculate traits. Variation in ejaculate performance traits generally is …

The Drosophila seminal fluid protein (SFP) sex peptide (SP) elicits numerous post-mating
responses, including increased egg laying and decreased sexual receptivity, in the mated …

Theory suggests that occasional or conditional sex involving facultative switching between
sexual and asexual reproduction is the optimal reproductive strategy. Therefore, the true …