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Evolution of the constant genital axis

Image 1 Phylogenetic tree showing the evolution of matrix positions, in the order of Diptera. The illustrations show mosquitos (top, end-position position) and flies (below, men overboard). Credit: Inatomi M. et al. (2019) Scientific reports 9: 210

In digter order, more primitive species, such as mosquitoes, generally make their hands in the end-to-end position. Higher (more evolved) tissues, such as flies, put male men behind (above men).

Nature's infallibility is at work: these positions are effective and productive alignment of genital genitals to achieve successful breeding.

The genitals of high-grade healthy genes rotate 360 ​​degrees at the beginning of development, male rotation at lower 180 degrees. Touring both positions provide unbeatable accommodations. Here are broader implications for the evolution of morphology (form) and behavior of species.

Researchers at the University of Osaka suggest that spraying of several genitals in diptrometry shows how to testify about the success of testosterone and intercourse and thus link this rotation to evolution. Their findings have recently been reported Scientific reports.

The researchers investigated Myo31DF mutant flies, and the genitals were completed several times immediately. This option provided subjects with the same genetic background, although we used genitalia monitoring, the correlation of the angle of the genitalia with the ideal study and reproductive results. In controlled conditions, videos were used to monitor the "dorsoventral (back-to-belly)" of the male genitalia, as a result of gambling behavior and sexual success.

Evolution of the constant genital axis

Figure 2 Continuing evolution cooperative hypothesis, turning to male genitalia. Red female genitals and blue indicate the female genitals. Credit: Inatomi M. et al. (2019) Scientific reports 9: 210

"As males were bigger genomes, larger imbalances that had the most direct orientation guidance were to have smaller successes for children," said Kenji Matsun.

Thus, morphology (in this case, genital adaptation) and behavior (sexual position) in co-operativism was promoted by the genital rotation of the sexual position for sexual reproduction. However, there were exceptions. Males existing in 45-degree genitalia have still been successfully copied; The key was not the level of rotation, but in the direction of direction.

Interestingly, gambling behavior and domination were not significantly changing with different angles of the genitalia. Men, in general, were the same motions. The main indicator of recent success was the dorsoventral direction.

"The discovery has confirmed that over-male co-operatives have developed an extra 180-degree genitouristic degree from the old end-to-end position, and that the angle is not sufficiently negative in reproduction," said the first author, according to Momato Inatomi. "It's valuable from the point of view of evolution, and we can also use practical applications to apply this discovery, such as pest control."

Explore more:
Environmental Inspirational & # 39; Niche & # 39; The characteristics affect the evolution of species

More information:
Momoko Inatomi et al. Genital men's direction is good for saving Drosophila intercourse, turning the genitalia into a cooperative between rotation and mating. Scientific reports (2019). DOI: 10.1038 / s41598-018-36301-7

Magazine reference:
Scientific reports

Osaka University

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