What is the longest mating creature?

2020-01-10 | Zhong Ming talks about science original |

Tibetan antelope special mating

On the Qinghai-Tibet Plateau, there is a group of animals with the longest mating time—Tibetan antelopes.

Actually, the actual mating time of Tibetan antelopes is very short, but it takes 21 days to prepare before mating. Under wild conditions, male and female species of Tibetan antelopes live separately and may live in different areas. MatingIn the early days, male Tibetan antelopes will obtain female mating rights through same-sex competition. Every year, a considerable number of male Tibetan antelopes are injured in competition. Generally this period will last about 7 days.

After 7 days, males will approach females, and they will live together at this time, but Tibetan antelopes are polygamous creatures. During the mating period, males will mate with females as much as possible. Generally, a male hidesAntelope will have relationships with 10-20 females. Unlike other creatures, male Tibetan antelopes will treat these females as their own property, and will not let any female slip away or let other males approach.

If the male does not want to lead the females, he will face the females with his buttocks, and keep hitting the land with his feet, making a low roar, indicating that I do not want to protect you anymore. At this time, these females will leave it and look for new males.

Tibetan antelopes really mate for a very short time, only a few minutes, but they do not mate only once, like other creatures, but they will mate with the same female multiple times during these days to increase the conception rate.

Every year during the mating season, male Tibetan antelopes are in a state of extreme excitement, causing loss of appetite and body loss.

In fact, many male animals will increase testosterone when they are in estrus. This is a hormone that can increase male charm. However, the side effects of testosterone are also very large. Once there is too much testosterone in males, it will cause mildness.If the body loses weight, it will always cause an individual to die. For example, the broad-footed pupae will mate continuously for 14 hours and die immediately after mating.

Although male Tibetan antelope's testosterone has increased during estrus, it will not cause death of biological species. Generally, males can survive in the wild for about 8 years, while female Tibetan antelopes can survive for about 12 years. Artificial breedingEnvironment, survival time will be extended.

Why do female Tibetan antelopes migrate?

Female Tibetan antelopes will migrate during pregnancy, but there are also non-migrating populations. Generally, the migrating populations account for the majority of female Tibetan antelopes.

In May and June each year, pregnant Tibetan antelopes and other female Tibetan antelopes will migrate to their place of birth to give birth to small Tibetan antelopes. As for why Tibetan antelopes migrate, scientists have not yet studied the specificThe answer is that some people think that their place of birth is rich in food and can provide enough food for the small Tibetan antelope.

Some believe that the purpose of Tibetan antelope migration is to avoid natural enemies, but there is increasing evidence that Tibetan antelopes are more likely to be hunted during their migration.

Also, most species migrate with females and males, but males of Tibetan antelopes do not migrate.

The female Tibetan antelope has a pregnancy period of 7-8 months, and there is only one per child. In order to better avoid natural enemies, the bones of the small Tibetan antelope will be calcified 3 days after birth, and they can avoid the attacks of wolves and bears. HumansBaby calcification needs to be around 1 year old.

At the end of July and early August each year, the female Tibetan antelope will return to the original place with the newborn offspring. The male cub Tibetan antelope will leave the ewe after a period of time, leaving only the female offspring and the ewe.Companion.

Conservation status of Tibetan antelope

In 2008, the World Conservation Union listed Tibetan antelopes as endangered species. Here is a science popularization. According to the number of organisms and genetic diversity, the Nature Conservation Union classifies organisms into: extinction, wild extinction, endangered, vulnerable, nearEndangered and non-endangered. That is, around 2008, Tibetan antelopes were endangered.

Fortunately, China attaches great importance to the ecological environment of plateaus and plateau organisms, and has vigorously started to protect the habitat of Tibetan antelopes and prohibit local wild hunting and indiscriminate killing. In recent years, it has achieved remarkable results. At present, the Tibetan antelopes are under the protection of China.Has improved, and the range of habitat has increased.

About 2016, the World Conservation Union re-examined the population of Tibetan antelope, and changed the Tibetan antelope to a near-endangered species. Although the protection level of the Tibetan antelope has changed, the living environment of the Tibetan antelope is still not optimistic.The opening of the Qinghai-Tibet railway and highway blocked the migration path of Tibetan antelopes and coupled with global warming, various factors indicate that the protection of Tibetan antelopes cannot be taken lightly.

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