Antechinus is a genus of small marsupials. It was discovered in Australia. All species of rats belonging to this genus are unlucky. Especially male ones. They are built for one job. Impregnate the female. While doing this work, they lost their lives.
Thereafter, their carcasses are eaten by mating females. This way she will have the energy to have children in the future. These rats usually eat insects, spiders, centipedes, and sometimes small frogs or reptiles. There are several species of male rats in Antechinus. Their only characteristic is that they mate with females for long periods of time at a time. Afterwards, you will die from body organ failure.
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The situation was the same for 15 species of mice, who formed relationships continuously for 2-3 weeks.
There are 15 species of mice in the genus Antechinus, and all males suffer the same fate. If you want to live, have nothing to do with it. But that didn’t happen. Males and females mate continuously for two to three weeks at a time. During this period, the male leaves to sleep. He invests the most time and energy into building relationships. About 14 hours a day.
I just hope his genes can be passed on to children born to women. But this long relationship building ended in death. Males die from fatigue and stress. Testosterone and cortisol levels are very high. Testosterone prevents cortisol from doing its job. In this case, organs fail.
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The small window between impotence and death in which the connection must be made
Diana Fisher, a mammal ecologist at the University of Queensland, said some rats survived. But this situation is very rare. In this case, the male stops producing sperm. Their testicles were separated from the organ. Then they gave up on the idea of falling in love. This is why they are saved. But they can no longer reproduce after that.
In fact, there is something wrong with these mice. Their sperm is hidden in an organ called the epididymis. Continuously excreted in urine. Therefore, the male only has a short time to mate and impregnate the female before becoming impotent and dying. This way their species can progress.
