Is the Yangtze River white sturgeon extinct, the Yangtze River white sturgeon is extinct, and where

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.

The extinction of the Yangtze sturgeon was caused by overfishing and habitat destruction.

The functional extinction of the Yangtze sturgeon, and humans bear the greatest responsibility. First, human overfishing has led to a decline in their populations. Second, human activities on the Yangtze River, such as sand mining, dam construction, and ship navigation, will destroy the habitat of the Yangtze sturgeon, depriving them of the environment in which they depend.

The story of the Yangtze white sturgeon:

Standing at the top of the Yangtze food chain, the Yangtze white sturgeon can reach 7 to 8 meters in length and weigh hundreds of kilograms. The Yangtze white sturgeon was once very popular. As early as the 70s of the last century, the Yangtze white sturgeon was caught in large quantities as a food fish.

By 1983, the Yangtze white sturgeon, whose population had declined dramatically, was listed as a protected animal and their fishing was banned. Even though people no longer fish for the Yangtze sturgeon, due to the continuous destruction of the ecological environment, by the end of the last century, the number of Yangtze white sturgeon has plummeted, and only a few hundred remain.

In 2002, a Yangtze white sturgeon was caught. In early 2003, scientists released him. However, what they never expected was that this would be the last time people would see a live Yangtze white sturgeon.

Since then, the search for the Yangtze white sturgeon has yielded nothing, and fears have begun that this extremely rare species is on the verge of extinction.

Yangtze white sturgeon. The main living area is actually in the middle and lower reaches of the main stream of the Yangtze River, and sometimes it also enters the large lakes along the river. Some of the Yangtze sturgeon are relatively large, and this Yangtze sturgeon tends to live in the deep-water troughs of the main stream, and can generally be seen in various sections of the Yangtze River, and most of them are in the vast water layer.

The Yangtze sturgeon is a relatively good swimmer, so this animal is not afraid of the rushing rivers. If they are relatively small, they can usually be found in some tributaries of the Yangtze River, or in some harbors and the mouth of the Yangtze River.

The brackish water area sees the Yangtze white sturgeon feeding. <>

From March to April every year, it is actually the breeding season of the Yangtze white sturgeon, and at this stage, the Yangtze white sturgeon generally spawns in the upper reaches of the Yangtze River, in fact, mainly in the Chongqing area. The current in this area is usually rapid, the current can reach meters per second, and the water in this area is very deep, basically about 10 meters. The main reason why this area was chosen for spawning is that most of the bottom of the Yangtze River in this area is rocky or pebble.

Therefore, it is very suitable for the Yangtze white sturgeon to spawn and reproduce. <>

In general, in Jiang'an County, Sichuan.

In the nearby Yangtze River section, we can often see the Yangtze River white sturgeon spawning intensively, and in the other cypress tree in Yibin County, Sichuan.

The section of the Jinsha River near the west of the town can also be seen spawning the Yangtze sturgeon, and from March to April every year, there are more Yangtze white sturgeons in these two waters. <>

However, it is a pity that this animal has now been confirmed to be extinct, and even in the above waters in the future, I am afraid that the Yangtze River white sturgeon will not be able to be seen. The Yangtze sturgeon has lived on the earth for nearly 200 million years, and it is an animal in the period of dinosaurs, and the extinction of this animal is indeed very regrettable, and it is also a wake-up call for human beings.

The main production area is the middle and lower reaches of the main stream of the Yangtze River, and sometimes it will enter the large lakes along the Yangtze River, and the larger individuals generally live in the deep-water channels of the main stream, and the smaller ones are usually in the tributary ports or brackish water areas of the Yangtze River estuary.

I think that this organism mainly lives in this part of the Yangtze River, and the water area of the Yangtze River has a very serious impact on this creature, and the requirements of this organism for water quality and environment are also very strict, which has led to the Yangtze River after the environment has been polluted for many years, and the impact on this creature is also very serious.

According to the Yangtze River Fisheries Research Institute of the Chinese Academy of Fishery Sciences, since 2017, no signs of natural breeding of Chinese sturgeon have been found in the core reserve of Chinese sturgeon in the lower reaches of Gezhouba, the only natural spawning ground for Chinese sturgeon, ——— Chinese sturgeon for three consecutive years. The construction of hydropower stations in various sections of the Yangtze River has divided the Yangtze River into several sections, and the upstream and downstream white sturgeon cannot communicate with each other, dividing them into smaller populations.

Sturgeon is essentially a fairly old large fish, and the earliest fossil of sturgeon fish found in China is in the Permian strata of Subei County, Gansu Province, which is 100 million years old.

However, this Chinese primitive cartilage scleroscale fish also has the characteristics of other fish and belongs to the transitional group. The current situation of a large number of dams, because the construction of barrages will change the hydrological characteristics of the upstream and downstream.

In this case, many aquatic creatures that inhabit the area are unable to adapt to the new environment and will inevitably go extinct, such as the Yangtze white sturgeon. Due to its very large size, the white sturgeon still needs a relatively large space to move, and as a semi-anadymic migratory fish, it needs to go to the upper reaches of the Yangtze River to spawn and feed and grow in the middle and lower reaches.

Extinct.

The white sturgeon is one of the endemic flagship species of the Yangtze River, and is commonly known as the elephant fish because of its long snout. Sichuan fishermen have a saying that the white sturgeon is huge. In addition, the white sturgeon has a fierce temperament and is located at the top of the biological chain, and is known as the king of freshwater fish in China.

In ancient China, the white sturgeon was called tuna. In spring, they spawn in the river. It is mainly produced in the main tributaries of the Yangtze River from Yibin to the mouth of the Yangtze River in China, and is also found in the lower reaches of the Qiantang River and the Yellow River.

It is a rare and precious animal that is a special product of China, and is a national first-class wild protected animal. Now the resources are declining significantly year by year, facing endangerment, and it is known as the giant panda in the water. In mid-September 2019, the international organization IUCN organized an expert group assessment in Shanghai, and the results of the assessment were that the Yangtze white sturgeon, an endemic species in China and a national first-class key protected animal, was extinct.