Cryptic female choice (CFC) represents postmating intersexual selection arising from female-
driven mechanisms at or after mating that bias sperm use and impact male paternity share …

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

Sperm experience intense and varied selection that dramatically impacts the evolution of
sperm quality. Selection acts to ensure that sperm are fertilization-competent and able to …

Interactions between sperm and the female reproductive tract (FRT) are critical to
reproductive success and yet are poorly understood. Because sperm complete their …

Post-copulatory sexual selection (PSS), fuelled by female promiscuity, is credited with the
rapid evolution of sperm quality traits across diverse taxa. Yet, our understanding of the …

Sperm morphological variation has attracted considerable interest and generated a wealth
of predominantly descriptive studies over the past three centuries. Yet, apart from …

In contrast to early predictions, it is now widely accepted that males incur substantive costs
from ejaculate production. Hence, males are predicted to allocate their reproductive …

Physiological changes in females during and after mating are triggered by seminal fluid
components in conjunction with female-derived molecules. In insects, these changes …

Sperm competition favors large, costly ejaculates, and theory predicts the evolution of
allocation strategies that enable males to plastically tailor ejaculate expenditure to sperm …

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 …