We have a zero-tolerance policy against illegal pornography.We do not own, produce or host the videos displayed on this website.It is thought to help individuals increase reproductive success by either inhibiting fertilization by others or increasing fertilization by their own sperm, but this remains unclear.Researchers have also noted that different species, and even members within the same species, stab mates in different regions of the body, raising the question of how these individuals decide where to aim their shots.For its male organ, the slug has a two-pronged penis consisting of a penile bulb that transfers sperm, and a separate, needlelike appendage called a penile stylet that stabs and injects partners with prostate fluid-containing sex hormones called allohormones.This stabbing behavior, known as traumatic secretion transfer, is fairly common amongst hermaphroditic sea slugs, and does not actually traumatize the slug — the term trauma refers to the Greek translation as "wound." The behavior is well documented, but still not very well understood.hermaphrodites having explicit hardcore sex, in ways you could only imagine.
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This is the first known instance of such reproductive head-butting in the animal world, the team reports today (Nov. "No one has ever described that before," study co-author Rolanda Lange, who now works as a postdoctoral researcher at Monash University in Melbourne, Australia, told Live Science.
[See Images of Hermaphroditic Sea Slugs Having ' Head Sex'] To investigate this question, researchers based at the University of Tuebingen in Germany studied the mating rituals of five hermaphroditic slug species, including sp. The scientists found that three of the five species placed their stylets fairly randomly on their mates' bodies, seemingly "choosing" a location based on logistical convenience rather than for any intended outcome.
Members of a fourth species consistently placed their stylets close to their partners' female genitalia, presumably to remain close to the reproductive action. 1 was the only of its relatives that consistently stabbed its partner between the eyes.
Cats may bite, and geese may have barbed penises, but one newly described hermaphroditic sea slug has taken violent animal sex to a new level by stabbing its mates in the head. 1, is a small sea slug found off the northeast coast of Australia.