Snail 'negotiate' with semen

With snail species, the result after " the incident together " is that both parties can be " pregnant ". As a " bisexual " type, when " close together ", snails often exchange semen with each other. If not willing to exchange semen, then stop immediately with each other.

According to a report published in Current Biology by expert Nils Anthens of the University of Tübingen, snails negotiating (underground) like that are for very practical reasons.

Because it is a " bisexual " species, so the snail is both a She and a Man. But perhaps because the production of semen is quite complicated and arduous, the snail's semen is very precious (?), And based on the theory found over 20 years ago, snails often exchange semen with each other, according to researchers, in the " propagation ", snails often tend to lean toward her task. Therefore, if one of the snails (then) does not release the semen, the other snail stops immediately (expressing the sentence "the money is not handed out is not ladle ").

The experiment was carried out with more than 200 snails of a tropical sea snail. In 50 snails, experts prevented the production of semen, which means that the 50 snails can still carry out " sex ", but are unable to " ejaculate " anymore, at the stage. end. When these 50 snails " combine " with normal snails (not being made by semen-producing organs), these healthy snails are often disregarded, refusing to continue to " go all the way ".

From this behavior, experts reinforce the hypothesis (for 20 years) that bisexual snails require a semen exchange with each other, and the propagation of these types of bisexuals is only according to the natural principle and of course: no agreement will be impossible (ie the stone rolls off, the lead must roll again )