Latest Sperm competition Stories
Males in many species compete to mate with an adult female, and when they finally gain access to her, will kill off the offspring of other males she has mated with in order to make her more receptive to his advances.
In a new study, researchers mated worms of different species and found that the females’ lifespans and number of offspring were drastically reduced compared with females mated with the same
Researchers at Bielefeld University and the Technische Universität Braunschweig are the first to confirm the benefit of multiple paternities for a vertebrate under completely natural conditions.
Syracuse University 'Current Biology' article marks culmination of 6 years of research Female promiscuity—something that occurs in a majority of species, including humans—results in the ejaculates from two or more males overlapping within her reproductive tract. When this happens, sperm compete for fertilization of the female's eggs. In addition, the female has the opportunity to bias fertilization of her eggs in favor of one male's sperm over others. These processes,...
Females play a larger role in determining paternity than previously thought.
Insect glands are responsible for producing a host of secretions that allow bees to sting and ants to lay down trails to and from their nests.
At one University of Cincinnati laboratory, the phrase “battle of the sexes” is taking on new meaning, with implications for our understanding of evolution.
A new study shows the production of sperm is more biologically taxing than previously thought, and expending energy on it has significant health implications.
Scientists at the University of Liverpool have found that male fruitflies experience a type of 'paranoia' in the presence of another male, which doubles the length of time they mate with a female, despite the female of the species only ever mating with one male.
When prowling for a hook up, it's not always the good-looker who gets the girl.