Since Darwin's conception of sexual selection theory, scientists have struggled to identify the
evolutionary forces underlying the pervasive differences between male and female …

For sexual selection to act on a given sex, there must exist variation in the reproductive
success of that sex as a result of differential access to mates or fertilisations. The …

In 1948, Angus J. Bateman reported a stronger relationship between mating and
reproductive success in male fruit flies compared with females, and concluded that selection …

Spiders and their mating systems are useful study subjects with which to investigate
questions of widespread interest about sexual selection, pre‐and post‐copulatory mate …

In 1948, Angus Bateman published a paper on fruit flies that tested Charles Darwin's ideas
of sexual selection. Based on this one fruit fly study, Bateman concluded that because males …

Mate searching is a risky behavior that decreases survival by increasing predation risk and
the risk of energy depletion. However, few studies have quantified actual mortality during …

Oxidative damage is predicted to be a mediator of trade-offs between current reproduction
and future reproduction or survival, but most studies fail to support such predictions. We …

Sexual selection is traditionally measured at the population level, assuming that populations
lack structure. However, increasing evidence undermines this approach, indicating that …

Sexual size dimorphism is one of the most striking animal traits, and among terrestrial
animals, it is most extreme in certain spider lineages. The most extreme sexual size …

Bateman's principles explain sex roles and sexual dimorphism through sex-specific variance
in mating success, reproductive success and their relationships within sexes (Bateman …