Girl have sex with insect

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All rights reserved. This picture of two mating insects comes with an unexpected twist. The one on top is a female, and she has a penis. The one on the bottom is a male, and he has the equivalent of a vagina. During sexual bouts that can last for 40 to 70 hoursshe penetrates him and uses her genitals not to deliver sperm, but to collect it.

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50 Shades of WRONG: Disturbing Insect Sex

An animal's choice of mate can be influenced by its diet as it reaches sexual maturity, research has shown. The study in beetles is the first to link an animal's nutritional intake during sexual development with its adult breeding habits. It could aid understanding of the likely impact on animals' behaviour as food availability varies with changing climates in the future. Researchers from the University of Edinburgh carried out tests using burying beetles, which become sexually mature a few days after reaching adulthood. Scientists raised groups of males and female beetles from birth before placing them with potential mating partners.

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The benefits of sex?

When Neotrogla curvata insects mate, the female top penetrates the male. In desolate caves throughout Brazil live insects that copulate for days, the female's penetrating erectile organ sticking fast in a reluctant male's genital chamber until he offers a gift of nutritious semen. Neotrogla seems to be unique among species with reversed sex roles — with choosy males and aggressive, promiscuous females — in also having swapped anatomy, researchers report 1. Not all animal species have a male penis, but because the evolution of body parts usually works through slow modification of existing structures, there would need to be a good reason for a female to develop a penetrating organ, says entomologist Kazunori Yoshizawa of Hokkaido University in Japan, a co-author of the study. Yoshizawa and his colleagues think that they have found that reason in Neotroglawhich was first described in 2.

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