The French scientists have recorded for the first time, a sexual behavior between a macaque and a female sika.
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The essence of man is going to still take a hit. A French team has highlighted, for the first time in a non-human primate, a sexual practice done with a partner of another species. In this case, primatologues for strasbourg on a mission to the japanese island of Yakushima have observed a japanese macaque that is engaged with a doe sika to ” the whole sequence of behavioral mating “. The set has been released to the public, Tuesday, January 10, in the scientific journal Primates. The video showing these antics fast is also broadcast.
The team of the Institute pluridisciplinaire Hubert Curien (CNRS) and the university of Strasbourg observed over the past several years these amazing primates. These are the first non-human that have been highlighted behaviors are ” cultural “, i.e. specific to some groups of the species. Has Koshima, some wash the sweet potatoes before eating them. Elsewhere, others bathe in the hot springs.
Yakushima, the macaques are distinguishable by their life in common with the sika deer. The two species have found an interest in food in the first place. The deer feed on the fruits and leaves fallen on the ground when the monkeys take their meals in the trees. Conversely, the monkeys épouillent deer, found in ticks a diet rich in protein. Even better : the two species to play together. It is not uncommon to see the primates up on the deer sessions for ” rodeo “. When the mounts are too passive, the monkeys of their type in the rump, in the manner of humans.
Movements unequivocal
This is the show that the photographer Alexandre Bonnefoy was about to shoot, in November 2015, within the framework of a project called ” Saru Monkeys of Japan “, when he saw the two animals engage in a different kind of game. On the images, we see the macaques up on the doe and to engage in movements without any ambiguity. The latter does not manifest any opposition.
The primate has not introduced his penis in one of the doe – ” their anatomies respective do not allow it “, says Cédric Sueur, an associate professor at the Institute Hubert Curien, who coordinated the study with her colleague Marie Pele. However, the male cums on ass of his partner. Immediately after, this last licks semen, ” a behavior very common among animals, as the semen is particularly rich in nutritious “, adds the biologist.
” When Alexander told us what he had seen, we did not believe, tells Cedric Sweat. He showed us the pictures… Ah yes ! We have told our japanese colleagues, who have not raw either. Until they see their images. “
The scientists of the locals explain this behavior by the condition of the young male : ” A pet device, which does not have access to females monopolized by the dominant, but on the other hand has pushed hormonal intense. “ behaviors masturbation had already been observed, as well as relationships between females left on the table.
unusual behavior
But to relieve his frustration with another species seemed to be restricted to a few human… In 2014, the lions had however been spotted, in the Antarctic, inflicting the worst outrages of king penguins. the ” But the birds were not consenting, stresses Cédric Sweat. They were wounded, often eaten then. It was harassment. “
Nothing of all this here. When the monkey tries to repeat the operation with a second doe, and that it is opposed, it shall comply with the requirement quickly enough. The primate manifesto on the other hand a high aggression towards other male macaques that roam in the surrounding area. ” He keeps watch “, concludes Cédric Sweat.
To the biologist, no ” error “ is not possible : ” The two species know each other very well. “ could not also incriminate a “rodeo” that has “gone wrong” : ” You can see that he mounts the female, knowing very well what he’s doing. “ behavior is not ” social “ the way of the bonobos who mate sometimes to reconcile after a fight.
The interrogation of the scientist to focus on the future : ” This is an unusual behavior, since nobody had yet observed, then, that these monkeys are very studied. The other males who were seen at work, are they going to copy so that they too can relieve their sexual frustration ? This behavior will he spread ? “ Response in five years, ensures the ethologist.
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