Two very basic ideas in sexual selection are heavily influenced by numbers of potential
mates: the evolution of anisogamy, leading to sex role differentiation, and the frequency …

The plethora of studies devoted to the topics of male competition and female mate choice
belie the fact that their interaction remains poorly understood. Indeed, on the question of …

Among vertebrates, fish show by far the greatest variability of alternative reproductive tactics
(ARTs). Usually, males attempting to monopolize access to females or fertilizations are …

The evolution and maintenance of secondary sexual characteristics and behavior are
heavily influenced by the variance in mating success among individuals in a population. The …

Reproductive males face a trade-off between expenditure on precopulatory male–male
competition—increasing the number of females that they secure as mates—and sperm …

Animal personality and behavioral syndromes can have profound effects on individual
fitness. Consequently, there is growing recognition that knowledge of these phenomena …

We propose a practical concept that distinguishes the particular kind of weaponry that has
evolved to be used in combat between individuals of the same species and sex, which we …

Ephemeral resource patches (ERPs)–short lived resources including dung, carrion,
temporary pools, rotting vegetation, decaying wood, and fungi–are found throughout every …

Theoretical models suggest that geographic overlap with different heterospecific
assemblages can promote divergence of mate recognition systems among conspecific …

Male reproductive success is influenced by competitive interactions during precopulatory
and postcopulatory selective episodes. Consequently, males can gain reproductive …