The Yangtze white sturgeon has been officially declared extinct, how many species will become extinc

The Yangtze white sturgeon is the largest creature of freshwater fish, and the species was declared officially extinct, and the wild Yangtze white sturgeon was found in the wildBut after that, I basically didn't see each other, and then recently I saw a corpse of a Yangtze white sturgeon. <>

When a species is declared extinct, it does not mean that there is really no survivor of the species, but that it has fallen below a certain number and there is no way to meet the needs of natural reproduction. Just like humans, animals that have problems with inbreeding between humans are like this, if the number of species of an animal is less than 150, then it basically has no way to reproduce naturally. And the Yangtze River Baixun this special species, it can not be through artificial breeding and artificial breeding methods, can only rely on it to reproduce naturally, the number is low to a certain extent there is no way to reproduce, slowly the existing disappears, this species disappears.

A large part of the reason for the disappearance of this species is that humans are building more and more hydropower stations, so that the Yangtze white sturgeon has no way to trace it seasonally. Because it has to spawn and go upstream, but the construction of the hydropower station it has no way to cross the dam of this hydropower station, which can be said to be a clear impact of human beings on natural species, and there will be more such effects in the future. From a human point of view, we build hydropower stations to make better use of water resources, and there is no problem, but from the perspective of animals, the construction of hydropower stations does affect the normal response of many organisms.

There's no way around it. Nature is inherently survival of the fittest, human beings have more powerful power and a stronger ability to transform the natural environment, and nature is transformed in the direction of their own benefit. That is to say, in this transformation process, it may affect the survival of some animals, so it can only be said that in the future, more and more consideration will be given to the impact of his engineering on natural speciesHowever, consideration is consideration after all, and it is still based on the interests of human beings themselves, and there will inevitably be more and more such situations in the future.

In fact, many species are now extinct under the destructive environment of human beings, and I feel very sad to hear such news, because everyone lives on the same earth, and sometimes some human behaviors are indeed very excessive.

Personally, I think that if human beings have not been aware of their wrong behavior, then the number of extinct species in the future may be innumerable, and if we want to truly protect rare species, then everyone must actively participate in the protection of animals.

There is no specific data on this, and the environment may be even worse in the future, and there may be dozens or hundreds of species that will become extinct under the influence of humans.

Because there are many people who do not pay attention to protecting the environment, and the current environment has changed a lot from before, it will become extinct.

The current environment is very badly damaged, and the current environment is no longer suitable for the growth of this animal, so it will become extinct.

Because there are many people who don't care for the environment, and there are many people who harm these animals, so they will become extinct.

Poyang Lake Water Highway Car Wash Machine does not erect bridges to prevent water pollution and extinction of aquatic organisms.

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The first is illegal fishing, in the past, human beings would catch a large number of Yangtze white sturgeon for economic interests, and at this time the state did not issue a clear prohibition order.

Residents around the Yangtze River basin have fished for profit, and this phenomenon is one of the direct causes of the extinction of wild white sturgeon.

The second is habitat loss, with dams built in the Yangtze River basin blocking their migration routes, unsustainable sand and gravel mining destroying their spawning grounds, and habitat loss.

There is less hope for the resurrection of the Yangtze sturgeon. The reason for the extinction of the white sturgeon is that it is no longer adapted to today's environment.

The white sturgeon, an ancient species that has survived for more than 100 million years, prefers a cooler environment, and has become extinct due to environmental changes caused by human activities and other factors.

"Unfortunate and expected".。There have long been traces of why the Yangtze sturgeon became extinct. In the final analysis, it is the destruction of the environment in which human beings grow!

The Yangtze River is well known to be China's main transportation river and rich in fishery resources; Intensive passenger and cargo transportation, is an indispensable road for inland and coastal ports and major cities; At present, the Yangtze River Economic Belt has been formed in the Yangtze River Basin, which plays a major role in the economic development of cities along the Yangtze River. According to the data released by the Yangtze River Pilotage Center in December 2020 (28), a total of 10,000 piloted ships were piloted in 2020, exceeding 60,000 for four consecutive years; The cargo capacity of pilot ships was 100 million tons, an increase over the same period last year; Among them, the cargo capacity of ships on international routes was 100 million tons, an increase over last year. That is to sayEvery year, the number of ships on the Yangtze River is increasing.

According to statistics at the beginning of 1980, there were more than 40,000 pollution sources in the whole basin, of which 490 industrial and mining enterprises were major pollution sources, and according to statistics, "in 1998, the sewage discharge in the whole basin was 18.9 billion tons, and in 2003 it had risen to more than 27 billion tons; The water quality exceeding the standard rate of the provincial boundary section of the basin also showed an upward trend. Water pollution in the basin, especially in the middle and lower reaches, has not been effectively controlled and controlled."。Although we have started to protect it, it is not the best time for interference. The pollution of the Yangtze River has led to the failure to effectively curb the pollution of the coastal waters of the main stream. The tributaries are seriously polluted, and the water quality of the main stream deteriorates; Lakes are becoming increasingly eutrophicated and aquatic ecosystems are being destroyed; "White pollution" directly affects water resources.

For white sturgeon, the large size of the body makes the number scarce. White sturgeon, which is a large fish like the white sturgeon, is more susceptible to human activities than smaller fish. The construction of power stations and dams in the Yangtze River, where we live, hindered the sturgeon's life, reproduction and exchange.

On July 21, the Yangtze white sturgeon, which had lived for 100 million years, was officially declared extinct, and many netizens felt very sad and difficult to accept after hearing the news. The Yangtze sturgeon has survived for hundreds of millions of years, but now, humans can only watch them go extinct. Speaking of the Yangtze River white sturgeon, many people may not be particularly familiar with it, it also has a name is "water giant panda", it can be seen that it is as precious as the giant panda, is a first-class protected animal in China.

The first reason for the extinction of the Yangtze sturgeon is thought to be due to overfishing. Normally, most of the Yangtze sturgeon are relatively large, weighing around 200 300 kilograms, and not only that, but they are also impressively long, reaching a length of about 2 to 3 meters. Many people may not know much about the existence value of the Yangtze white sturgeon, only that they are very large, so they are paid special attention to by many diners who like to eat seafood, so it will lead to a decrease in the number of Yangtze white sturgeon.

In addition to the cause of human overfishing, there is also a problem of the ecological environment. Generally speaking, the Yangtze sturgeon lives in the main tributaries of the Yangtze River from Yibin to the mouth of the Yangtze River, and in addition to this place, the Yangtze River white sturgeon has also been found in the lower reaches of the Qiantang River and the Yellow River. The Yangtze sturgeon is a very large fish, and every year around the Qingming Festival in spring, it will go to Yibin and Jiang'an counties in Sichuan Province to spawn, and when the young Yangtze white sturgeon are successfully hatched, they will migrate downstream.

Since dams are now being built in many areas, blocking the migration routes of the Yangtze sturgeon, once their migration fails, the number will of course become less and less. In addition, the Yangtze River white sturgeon cannot be artificially cultivated, and Chinese experts have also tried to artificially breed the Yangtze white sturgeon, but they have all failed. The Yangtze sturgeon can only survive in the wild, and once it becomes extinct, it means that the Yangtze white sturgeon is completely extinct.

The main reason is that the Yangtze River is particularly polluted, and the production of the Yangtze white sturgeon itself is very low, and the Yangtze River is no longer suitable for the Yangtze white sturgeon to live, so it will become extinct.

It is because of the destruction of the living environment, because there are people who catch them, they are hunted. Coupled with the fact that the quality of their living waters is getting worse and worse, it will lead to extinction.

The destruction of their living environment, coupled with the hunting and hunting of some illegal people, led to the extinction of the Yangtze sturgeon.

The Yangtze white sturgeon is a large fish that lives in the Yangtze River basin, and this fish is relatively large, reaching a maximum of seven or eight meters. On July 22, 2012, the Yangtze White Bear was declared extinct, as the fish was last seen on the first day of the Lunar New Year in 2003 and has not been seen since. At that time, two people rescued a Yangtze sturgeon in Yibin, Sichuan, and then released and tracked the white sturgeon, but as the radio signal disappeared, there was no news of the white sturgeon.

And the reason why the extinction of this species has only been announced now is because the relevant departments have been looking for it for years, but have not found it. <>

Since the release of the last Yangtze sturgeon, the relevant personnel have also searched along the Yangtze River many times, and in six years, they have searched for it eight times, but there has been no result. No one thought that after the last fish was lost, the entire species would be lost. Since 2003, researchers have not seen any trace of the Yangtze white sturgeon, nor have they been cultivated in captivity.

Wei Qiwei, who specializes in the Yangtze white sturgeon, first saw this fish in 1984, when it was a dead white sturgeon, and between 1984 and 1993, Wei Qiwei and his colleagues also rescued four besieged white sturgeons, but only one was successfully rescued, and then released back into the Yangtze River. The longest time they spend in the process of raising white sturgeon is 29 days. In September 2019, foreign experts also felt that the news of the extinction of the white sturgeon should be announced, but Wei Qiwei always disagreed.

However, after so many years of monitoring, Wei Qiwei and his team determined that the white sturgeon should have become extinct between 2005 and 2010, and in 1993, it was actually functionally extinct, and the population could not reproduce and live normally. The definition of extinction of a species is that the species has no natural reproduction, and when the lifespan of the species is reached, and no individual of the species is found, it should be considered extinct, so it has not been released until today.

I think the main reason is that the last time this fish appeared on the first day of the Lunar New Year in 2003, and at that time, two people rescued a Yangtze River white bear, and released and tracked the white bear, and then with the disappearance of the radio signal there was no news of the white bear, because the relevant departments have been looking for the existence of this creature for many years.

During this period, China has been searching for the Yangtze sturgeon, and after so many years, it has not been found, so the extinction can be declared.

The extinction of species is subject to scientific assessment. Although the Yangtze sturgeon was last seen in 2003, it is only after a reasonable assessment that it is possible to determine whether it is extinct.

<>So far, many species in China are on the verge of extinction, and even some organisms have been declared extinct, which is undoubtedly the most significant loss of human precious wealth. There is a news report that the white sturgeon, an endemic species of the Yangtze River, has been officially declared extinct, and this news has received widespread attention and eager discussion from netizens as soon as it was reported, and at the same time, it has also made many people feel sad and indignant, so many netizens have asked: Why did this tragedy occur?

In fact, I believe that many people will have their own views and opinions on this issue, but they can only be explained from the following reasons.

Human behavior is overly intrusive

In fact, sometimes the extinction of natural species is more related to the excessive interference of human behavior, and the main reason for the extinction of the endemic species of the Yangtze River in China is because the construction of dams has cut off the migration route of the white sturgeon, which will have a very great impact on the habits and life of the white sturgeon to a certain extent, and they cannot quickly adapt to the changes in the environment, so they will slowly go extinct. Although this problem is also taken into account in the process of dam construction, fishing channels are built next to them, but unlike humans, they do not have too much will to clearly design the trajectory of their movements, so it is still very related to our excessive renovation.

Destruction of the ecological environment

Sometimes, in order to satisfy their own selfish interests, human beings often not only fish for white sturgeon, resulting in a decrease in the number of white sturgeon, but also choose to mine sand and gravel in the Yangtze River in order to harvest more wealth, which will have a certain impact on their living environment, and illegal mining may actually harm them, and will also destroy their own habitat, resulting in a certain amount of pollution in the Yangtze River.

So to a certain extent, this also brings us a certain warning, as the most important responsibility of human beings is to protect our ecological environment, and this is often to protect our own home and future, isn't it?