Sexual conflict occurs when the genetic interests of males and females diverge. Recent
evidence supporting the view that male and female genomes are in conflict has now …

Publisher Summary This chapter reviews the current knowledge of variation in sperm
morphology over several levels of biological organization: variation within males (both within …

How barriers to gene flow arise and are maintained are key questions in evolutionary
biology. Speciation research has mainly focused on barriers that occur either before mating …

Mechanisms of speciation are not well understood, despite decades of study. Recent work
has focused on how natural and sexual selection cause sexual isolation. Here, we …

One of the most enigmatic observations in evolutionary biology is the evolution of
morphological or physiological traits in one sex that physically injure members of the other …

Publisher Summary The mechanisms of sexual reproduction are expected to be complex
and evolutionarily dynamic in internally fertilizing species, where numerous biochemical …

The mechanism of speciation is a central problem in evolutionary biology. In free-spawning
animals with no complex mating behavior, prezygotic reproductive isolation (speciation) …

Postcopulatory sexual selection is credited with driving rapid evolutionary diversification of
reproductive traits and the formation of reproductive isolating barriers between species. This …

While sexual selection is generally assumed to quickly cause or strengthen prezygotic
barriers between sister species, its role in causing postzygotic isolation, through the …

Although females are expected to maximize their reproductive success with only one or a
few matings [1], the females of many species mate with multiple partners [2]. Experimental …