Latest Sexual conflict Stories
Sex can trigger remarkable female responses including altered fertility, immunity, libido, eating and sleep patterns - by the activation of diverse sets of genes.
A new mechanism of animal mating plug production has been discovered by scientists at the Smithsonian and their colleagues.
Battles of sexes shown to spur adaptive sex differences
Male praying mantises are more likely to engage in risky mating behavior if they have not had recent access to females, as reported Apr. 25 in the open access journal PLoS ONE.
Mate competition by males over females is common in many animal species. During mating season male testosterone levels rise, resulting in an increase in aggressive behavior and masculine features.
Aggressive male mating behavior might well be a successful reproductive strategy for the individual but it can drive the species to extinction.
A new study published this week shows a genetic 'battle of the sexes' could be much harder to resolve and even more important to evolution than previously thought.
Sexual conflict is not only a human phenomenon.
Mothers win the genetic tug of war by producing more sons with larger fathers and more daughters with smaller fathers.
Female ducks have evolved an intriguing way to avoid becoming impregnated by undesirable but aggressive males endowed with large corkscrew-shaped penises: vaginas with clockwise spirals that thwart oppositely spiraled males.
Stegodyphus lineatus is the only European species belonging to the spider genus Stegodyphus. The males of this species are up to 12 millimeters long, while the females are up to 15 millimeters long. The coloration can range from whitish to almost black. In the majority of individuals, the opisthosoma is whitish with two broad black longitudinal stripes. The males and females look similar, but the male is usually richer in contrast and has a bulbous forehead. The species name is in...
- A transitional zone between two communities containing the characteristic species of each.