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 …

It is becoming increasingly clear that the evolutionary interests of the sexes are often in
conflict when it comes to mating. Sexual encounters involving nuptial gifts, however, have …

Biases in the operational sex ratio (OSR) are seen as the fundamental reason behind
differential competition for mates in the two sexes, and as a strong determinant behind …

Theory predicts that males will benefit when they bias their mating effort towards females of
higher reproductive potential, and that this discrimination will increase as males become …

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 …

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 …

Male reproductive success is typically mate limited, which implies that males should rarely
be choosy. On the other hand, females often vary greatly in their fecundity or other …

We assessed the extent to which traits related to ejaculate investment have evolved in lines
of Drosophila melanogaster that had an evolutionary history of maintenance at biased sex …

We examined evolutionary stable sperm allocation and included stochastic variation in male
mating frequency, not included in previous models examining sperm allocation strategies …

When females mate with multiple partners, the risk of sperm competition depends on female
mating history. To maximize fitness, males should adjust their copulatory investments …