Since the birth of the earth, with the long process of biological evolution, there are so many species on the earth today. Regardless of the same species, survival and reproduction can be said to be the two most important things in life. For different species, in the long process of evolution and selection, they have also evolved their own unique ways of mating or reproduction, some of which make people feel very incredible, but this is also A habit retained by the population. For example, there is such an animal, it can be said that it has the longest mating time in nature, so why are humans not like them?
In nature, which animal has the longest mating time? Why can’t people be like them?
The mode of reproduction in nature is nothing more than asexual reproduction and sexual reproduction. Many species reproduced asexually when they were just born. Nowadays, most vertebrates reproduce sexually, while a large part of invertebrates still reproduce asexually. In the process of sexual reproduction, the length of time that the creatures mate is also different. The animal mentioned for everyone today is the dark shrew living in Australia. Such an animal looks like a mouse, very cute and cute, but no one thought that they are very hard at reproduction and mating!
The bag shrews are mainly distributed in Australia, and they also have their own baby bags. They are very small in size. The reason why they can be famous in the animal kingdom is due to their unique mating style. It is necessary to know that male dark-bag shrews enter estrus at about 11 months, and they are also known for their crazy mating. This is because after the male enters the estrus period, because the testosterone in the body rises rapidly, they will continue to find females for mating, even without eating or drinking, generally it will last for 2 to 3 weeks. For males, it is very desperate. They always choose females for mating. This is also to better reproduce offspring and increase the probability of reproduction, but in the end they often die because of exhaustion and the collapse of the immune system. Therefore, after mating, some males will die in large numbers, and their numbers will also drop greatly at this time.
And because of such a unique mating method, the dark-pocket shrew is also known as the “pit man”, using its behavior to maximize this reproduction mechanism, and their death is also to make room for the offspring. In fact, the reason why they are so desperate is that they only produce sperm once in their lives, so in order to increase the chance of conception, they can only use this method, even at the expense of their own lives. On the other hand, why don’t people or other animals in nature reproduce in this way?
First of all, for the dark-pocketed shrew, its size is relatively small and relatively easy to avoid, so long mating time does not have a big impact, but other animals are different. In nature, tigers, lions and other animals have a very short mating time, because if the time is too long, it will cause distraction, reduce alertness, and encounter natural enemies will be very dangerous. The reason why the same people did not evolve into this way is because they also have independent civilization and thinking ability in the process of evolution. With the development of society, their thinking is also more developed.
For human beings, many times they may think that one child is enough, and if they have to raise multiple children, the quality of education may be reduced, and the burden will be heavier. Coupled with the changes in the body structure of women in the process of human evolution, it has become very difficult to breed offspring. And scientific research shows that the normal human pregnancy period was originally 84 months. Now humans have to give birth in October. Therefore, the offspring cannot be walked for food after being born like animals, and the protection of their parents is also required. There is no need to evolve into such a way. At the same time, mankind also shoulders a greater mission. If you show up for this, wouldn’t it be a shame.
For different species, the way of reproduction is also different, but overall, this is also the inevitable result of the long evolutionary process.