The female orgasm was a kind of atavism from the point of view of evolution — in the past he was instrumental in ovulation and production of sex cells during mating, and now plays no role, say scientists in an article published in the JEZ-Molecular and Developmental Evolution.
In the past our colleagues have focused attention on the fact that today there are in human biology and the traits that it could change, and almost no attempt to understand how this trait – orgasm – could occur in the course of evolution, stated Gunther Wagner Gunther Wagner) from Yale University (USA).
Scientists and philosophers since the ancient time thinking about why women feel pleasure during sex. From the point of view of the evolution of such a trait of an organism has no meaning – she is not helping women to become pregnant and produce more children. Moreover, the females of our closest relatives, leading a monogamous lifestyle – Gibbons – not orgasm, in principle, that questions the social role of this feature of the female reproductive system.
Wagner and his colleague Pavlicheva Michaela (Michaela Pavlicev) tried to unravel the role of orgasm, drawing attention to what actually happens to a woman’s body at the onset of this condition and comparing it with the behavior of the females of apes and other mammals.
The main biological feature of orgasm, as the scientists explain, the release of blood and a surge in the concentration of a number of hormones, including oxytocin, the hormone of happiness, and prolactin, hormone of maternity, preparing the body of a woman to the development of the embryo and child. Something similar, as found Pavlicheva and Wagner, occurs in the body of females of other mammals – similar to the release of prolactin and oxytocin in their body comes at a time when they begin ovulating.
Ovulation in women, unlike animals, go on their own and not depend on the time of year or another important factor that causes ovulation in females of many other mammalian species – the smell or sight of a particular male.
The presence of such features in the sexual behavior of females in the most ancient mammalian species that exist today, is a positive indication that ovulation when the male emerged earlier than the cyclical ovulation modern women. For this reason, it is likely that a similar process was the grandfather of modern orgasm during sex, the meaning of which disappeared after the women moved to the hidden cyclic ovulation, not allow a potential suitor to guess whether it is ready to mate or not.
According to the authors, this is supported by the fact that the clitoris is moved as the evolution of man from the inner part of the female reproductive system in his current position, which reduced the likelihood of accidental triggering of this reflex during intercourse.
Today all these changes has lost its meaning, because the kind of men today does not affect the process of ovulation, and orgasm became useless for the evolution of the phenomenon, a kind of relic of the past.