Many places have started the census of invasive alien aquatic animals, what invasive alien species h

Many places have started the census of invasive alien aquatic animals, and invasive alien species have appeared in China; Crayfish, water hyacinth, Brazilian, Mississippi red-eared turtle.

There are more than 660 species in total, including African giant snail, Nile tilapia, red brown weevil, fuso mealybug, spiny bee and so on.

The exotic species we are familiar with are, crayfish, microchamomile, phoenix blue, purple-stemmed zeatorium, potato beetle, crayfish.

In recent years, in fact, the area of invasive alien species in China has become larger and larger, and the scope of involvement is becoming more and more extensive, for example, in domestic farmland, waters, grasslands, islands, and urban residential areas can see these invasive alien species. Many invasive alien species reproduce very quickly, and there are almost no natural predators, so the number in the wild will increase exponentially, which will seriously damage the local biodiversity and various ecological security.

These species cause ecological damage and biological pollution, reproduce rapidly, increase in numbers exponentially, and lack the restraint of natural enemies, resulting in rapid flooding, which can affect agricultural harvests at least and have no food to harvest.

It is likely to lead to serious extinction of some native organisms in our country, and the number will become smaller and smaller in the future, and at the same time, it will also destroy the biological chain and destroy the ecological environment.

The impact is very large, these species are particularly aggressive, and the intensity of infection is also very large, which will have a very bad impact on native organisms, and will also affect the native ecological environment.

After these alien species invade the territory of China, they may lack natural enemies, and they can reproduce in a large number of environments without natural enemies, thereby compressing the living space of native species. Destroying the ecological balance of native species.

It has been found that the alien species with ecological damage should be artificially eliminated, otherwise once they enter our country for breeding, the loss of natural enemies will definitely cause serious damage to the ecological balance of our lives.

How to prevent alien species from entering our country?

If a visitor returning from abroad wants to bring back a species that is not available in China, the materials must be checked and it is clear that the species is not prone to invasion. Do not allow the invasive species to escape, do not let them come into contact with the outside world, and must be completely isolated from the outside world. Increase the scope of inspection of tourists entering the country, and resolutely prevent invasive species from being inadvertently brought or smuggled by alien species.

Many rare animals come from China's neighboring countries, especially Southeast Asia and China. There are also rare animals from nature, from Europe, Africa and the United States to China. Because many of the rare animals in the smuggled goods are exotic species, or often suffer from exotic rare animal diseases.

Random conversion of exotic rare animals collected or purchased by the ** department is likely to lead to the death of some races, while others may lead to biological invasions, seriously endangering local rare animals or ecosystems in China.

As people purposefully or subconsciously bring certain organisms to areas suitable for habitation and reproduction, resulting in the continuous development of their species, the main production areas are gradually and steadily expanding, coordinating the survival of indigenous biological species, and adversely affecting biodiversity, forest fruits, agriculture and animal husbandry, and of course ecological environmental protection and even health.

What are the hazards of alien species?

The key aspects of alien species invasion are: first, reducing agricultural and forestry commodities, annual output value and quality, increasing costs, endangering biodiversity, especially encroaching on the living environment of local species, resulting in the death and endangerment of local species; The third is to endanger the physical and mental health of people and animals.

At least 188 invasive green plants, 81 invasive animals and 19 invasive microorganisms have been found in China, and 50 of the 100 highly threatening external invasive species released by the Global Alliance for Conservation have posed a serious threat to agriculture and animal husbandry, forestry and fruit industry, water conservancy projects and aquaculture.

If an invasive alien species is found, it should be eradicated in time, because this invasive species will seriously endanger the survival of native species and bring serious ecological disasters.

First of all, these alien species should be prohibited from entering China, and if they are found to have entered China, they should be handed over to the police or sent to the Chinese Academy of Sciences.

When encountering this alien species, it should be completely eradicated, otherwise it will affect the development of the surrounding ecological environment and is very dangerous.

It should be dealt with through national policies, as well as related situations, and it is necessary to understand the corresponding measures to solve such situations.

The root cause is "intentional introduction" and import/export**. Taking China as an example, according to the data of China's first nationwide survey of invasive alien species, the reason for the intentional introduction of invasive alien species is the reason for import and export.

First of all, the reason for the intentional introduction, the most typical case is the Australian rabbit, when the Europeans first stepped into the Australian continent, there were no rabbits on the Australian continent, but the paradise of the native animal koala and kangaroos, but the Europeans in order to satisfy their selfishness of hunting on the Australian continent, they introduced the rabbit to the Australian continent, but this introduction does not matter, because there is no natural enemy, the hare will be on the Australian continent will be super strong reproductive ability to the fullest, and the Australians do not eat hares, and eventually the Australian land is flooded with rabbits.

Although Australia has used many methods to control hares, they have not been successful, and they are still in a state of flooding. There are many such cases, the most typical one in our country is the Taiwan Fushou snail, but the original purpose of the introduction of the Fushou snail is to eat, the starting point is good, but because of the poor taste after abandonment, it is self-defeating.

Speaking of import and export, all cases of invasion of alien species in the modern world are basically related to import and export, because modern marine transportation is becoming more and more developed, and the goods transported are becoming more and more diverse.

In the 70s of the 19th century, when the Soviet Union exported flaxseed to the United States, it accidentally brought tumbleweed seeds into the United States, because they also belonged to the ranks of grass seeds, so it was difficult to find artificially. The flat terrain and arid climate of the western United States are very suitable for tumbleweeds to breed and grow, and the native plants cannot compete with tumbleweeds, so tumbleweeds eventually grow wildly and flood, not only rolling on the highway to cause traffic accidents, but even blocking the doors and windows of houses.

Of course, the invasion of alien species is also reflected in the random release of animals, such as the Brazilian turtles and scavengers that invaded China, all of which are caused by unreasonable release.

Because China's environment has improved, China's ecological environment is now particularly good, so it will lead to the invasion of alien species.

Because the environment has been particularly damaged, the habitat has been seriously damaged, and it has also been affected by people's indiscriminate cutting and unreasonable reclamation.

Because many people do not understand the harm of alien species, they will bring in some alien species, so now the invasion of species is more serious.

Because invasive alien species often have no natural predators in the local ecological environment, this reason can lead to their continuous growth and reproduction, and they may also become natural enemies of other organisms, which can have a devastating impact on these organisms.

It has caused serious harm to the local ecological environment, and is likely to threaten people's lives and safety, and at the same time, the local ecological environment has been damaged, and crops and vegetation have been damaged to varying degrees, and it is also likely to damage some buildings.

Invasive species have no natural predators in the local area, so they reproduce very quickly, and will eat some local species, destroy the ecological environment, destroy the local species diversity, and pose some threats to human life.

It will destroy the biological chain of our country, because once these invasive species are put into the natural environment, they will seriously damage the natural environment, and it will also lead to the extinction of some species.

The invasion is very harmful to the local ecological environment, because we don't know its natural enemies for the time being, so there is no way to catch it, and it is easy to cause damage.

In the past, when I was studying biology, I often didn't understand what invasive alien species were. I don't understand how the invasion of alien species will affect the ecological environment of our country. But as you get older, you get more insightful.

Therefore, we also have a deep understanding of the extent of damage to China's ecological environment caused by alien species.

Alien species can cause rapid and large damage to the ecological environment. For example, the snail snail, which can be found everywhere in rice fields, is extremely fertile, adaptable, and environmentally destructive. They have a very wide variety of food, which can be rice in rice fields or aquatic plants in water.

Basically there is nothing they don't eat. But even more terrifying is their fecundity, as pink ball-shaped snail eggs can be seen on the stones in the field, and soon these eggs can hatch. A new wave of environmental destroyers will emerge.

Alien species are extremely fertile-producing and have no natural predators. Why is it that even in China's ecosystem, where there are already many kinds of organisms, the ecological balance has not been broken? Because there is a natural food chain, there are many kinds of natural predators in the middle and lower strata.

Although they are highly fertile, they are bound by natural predators, and their numbers are also restricted.

But these alien species are different, they have no natural enemies at all after they were introduced into our country, and coupled with their reproductive speed. It will soon become a large ethnic group.

The presence of alien species can affect the survival of native organisms. When these alien species are introduced, they quickly destroy the local ecological environment and compete with native organisms for food. As a result, the population of native organisms is suppressed. If it is more serious, it will even become extinct.

Everyone should be conscious of resisting the introduction of alien species. In the news, it can be seen that countless alien species are detected from the customs every year, and some of them are deliberately done. And some are carried unintentionally by those who have no intention.

Therefore, everyone should understand the hidden dangers. Maintain the local ecological environment of the country.

The invasion of alien species will destroy the balance of our ecological environment, and biological diversity will also be destroyed, thus affecting people's lives.

Invasive alien species also cause serious biological contamination. Dong Jingao said that after the successful invasion of most alien species, the growth is difficult to control, causing serious biological pollution and irreversible damage to the ecosystem. After invading southern Yunnan, Eupatorium purpurea, which is native to South America, spread rapidly to northern Yunnan, where not only trees and crops could not grow, but its toxins also caused asthma in cattle and horses, bringing disaster to animal husbandry production in the invaded areas.

Worryingly, to this day, people are still helpless about Eupatorium.

Ecological balance is disrupted. Serious environmental pollution. to the impact of even more severe weather. It would threaten the survival of humanity.

It can damage the environment. Some alien creatures have no natural predators, and they will reproduce and grow indiscriminately, causing damage to the environment.

Harmful species will cause harm to the local ecological environment, biodiversity, production of agriculture, forestry, animal husbandry and fishery, and even human health, cause economic losses and ecological disasters, and form biological invasions, so they are also called "invasive alien species".

Invasive organisms are exotic organisms that are not native to the country. To put it simply, it is the organisms that enter later that adapt to local life and reproduce in large numbers. Their invasion has upset the original ecological balance of the local area, damaged the local biodiversity, and brought fatal disasters to the ecosystem!

These alien species all have similar characteristics of "no natural predators, strong fecundity, and strong adaptability"!

According to the 2019 Communiqué on the State of China's Ecology and Environment released by the Ministry of Ecology and Environment, more than 660 invasive alien species have been discovered in China.

To be honest, the current case is "eating" is the most perfect solution, those foreign countries spend a lot of manpower and financial resources, but it is only not a cure, if there are fish that slip through the net, it is only a matter of time before alien species make a comeback!

Many countries have encountered the problem of biological invasion, and the following is an in-depth introduction to the harm caused by biological invasion through a few typical cases.

Crayfish Regarding the ** of the crayfish, some people say that it escaped from an American cargo ship, and some people say that it was deliberately put by Japan as a creature**. Before the invention of spicy crayfish in China, almost no one in the world dared to eat this creature due to its tenacious vitality and scavenging habits.

Thanks to the "iron teeth and copper teeth" of the Chinese, the end of this invasive species is that one eats one and two eats a pair. Spicy, thirteen spices, and minced garlic take turns.

Fushou snail Fushou snail is very harmful to agriculture, it will eat rice seedlings and affect the harvest of rice; Coupled with the lack of natural predators in the local area, the Fushou snail is rampant and has become a major species hated by farmers.

In short, the dangers of biological invasions should not be underestimated.

The transmission routes of alien species are also diverse, in addition to natural ways, human beings take the initiative to carry is also a very important reason, some people are hunting, in order to raise pets, and some people are for eating and selling, however, no matter what the purpose, it is best to understand the habits before income, and do not discard some unknown attributes of the creatures at will, such as the Brazilian turtle we are familiar with, once it is "released", it will bring great damage to the local environment, do not do something self-righteous "good deeds".