For decades, scientists have collected a lot of information about the diversity of animal penis, including straight, bifurcated, spiral, long a thorn. However, from the point of view of anatomy, physiological features females equally important to reflect information. Integration and comparative biology meeting held last week, scientists produced a male organ in a lively discussion. Among female sex organs and anatomical structures its importance in shaping the penis has also joined the discussion thread. "A lot of people think that is a kind of female sex after the meeting," evolutionary ecologist at the University of Utah reproductive Teri Orr said.
Scientists have studied the sharks, snakes, and physiological characteristics of other animals in this area. They found that female sexual organs in a complex structure something like the males. So they began to female deemed this "evolution contest" active participants. For example, females will evolve a more complex genitalia, thereby helping to control the mating behavior, while preventing the "strong on" behavior, but these features has led to further evolution of the male sex organs.
Thirty years ago, the field of comparative evolution "plug-in" by the evolutionary biologist biology of sexual organs William? Eberhard created, he was working on the diversity of male genitalia, including the character, size, surface decoration and so on. Eberhard wanted to know the reasons for these diversity. However, when he believed the female genitals, "about the same", which led other scientists to ignore its importance.
Professor Eberhard continue to study the flies, wasps, spiders and other species, are beginning to realize the female sexual organs may not be as easy as you think. Especially males of some species during mating with each other often make friction, tearing, or even chewing behavior, so as to prevent the female from the process. He therefore believed that females might have some preventive mechanism accordingly.
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