The entry of alien organisms into new ecosystems, even with good intentions, can sometimes cause serious damage to the local ecology and even lead to ecological disasters.
<h1 class="pgc-h-arrow-right" > myna</h1>
In 1890, an avid Shakespeare fan released 60 European starlings into New York's Central Park, hoping to introduce all the birds mentioned in Shakespeare's works in the future. If anyone knew how much noise the mynah would make, how much damage it would cause to agriculture, and even how much damage it would cause to the civil aviation industry, people would be annoyed by this stupid way of doing things.
<h1 class="pgc-h-arrow-right" > hare</h1>
In 1859, an Australian farmer released 24 grey rabbits on his farm to enjoy hunting. By the end of the 19th century, however, the australian grey rabbit population had reached levels that local flora and fauna could not bear, and even the land was on the verge of collapse. At the end of 1937, scientists began experimenting with a variety of "myxomaviruses" against rabbits, which proved that the virus could safely kill rabbits without affecting other species.
<h1 class="pgc-h-arrow-right" > wild kudzu</h1>
Kudzu is an ornamental vine native to Japan that has wreaked havoc on ecosystems in vast areas. It was one of the first invasive species to attract attention and begin to be controlled, but its spread is now difficult to control. In 1876, Kudzu was first exhibited at the Centennial Exposition in the East Coast city of Philadelphia, Usa. People praised it as a ground cover plant, with strong vitality and fast growth, which helps to curb soil erosion. Within 50 years, it earned new nicknames: "Swallow the Vines of the South" and "Green Crisis." Now on the west coast of the United States, traces of wild kudzu have been found.
<h1 class="pgc-h-arrow-right" > snakehead fish</h1>
After entering a pond or lake, snakeheads will eat everything they can find, then inhale enough air for four days in order to land in search of new bodies of water (their bodies move slowly forward like snake-like fins when they move). Sometimes in order to kill hidden snakehead fish, people do not hesitate to poison the creatures in the whole lake. Giant snakeheads can grow up to 0.9 meters long and have few predators.
<h1 class= "pgc-h-arrow-right" > sugarcane toad</h1>
To control pests, Australia introduced sugarcane toads into sugar cane fields. However, they did not catch pests according to people's wishes. Because sugar cane fields can't provide them with good protection so that other predators can find them. The venom secreted by the skin of sugarcane toads usually kills any animal that tries to eat them. Sugarcane toads can grow up to 38 centimeters, whether dead or alive, and they eat almost anything they encounter. They are also as prolific as rabbits and can hardly be completely removed.
< h1 class="pgc-h-arrow-right" > mouse</h1>
Rats are found on 90% of the world's islands, and 60% of the extinction of birds and reptiles on the islands in general is related to rats. The most typical example is Mouse Island in alaska's Aleutian Islands. In 1780, when a Japanese shipwrecked, Norwegian rats fled from the ship to the island, quickly eating up all the seabirds on the treeless, uninhabited island. Currently, the offspring of these rats rely mainly on birds that accidentally land on the island and marine life trapped in the intertidal zone. In 2018, humans sprinkled a large amount of rat poison on Rat Island. In June 2019, biologists announced that all rats on the island had been wiped out.
<h1 class= "pgc-h-arrow-right" > killer bee</h1>
The bee, known as the "killer bee," is the result of an experiment aimed at improving the reproductive capacity of European bees and is native to southeastern Brazil. In 1957, a beekeeper accidentally released 26 Tanzanian queen bees. After mating with local queens, these queens produce more adaptable offspring than European honey bees. The bees spread so quickly in North America that their presence is found from time to time on the North American continent.
<h1 class= "pgc-h-arrow-right" > Asian carp</h1>
The Asian carp, also known as the silver carp, can grow to more than 45 kg. Asian carp was first introduced to the southern United States to remove algae from catfish ponds. The flood caused some carp to flee to the Mississippi River and its tributaries. They quickly adapted to the environment there and began to multiply in large numbers, wreaking havoc on the local ecosystem.
<h1 class="pgc-h-arrow-right" > Burmese python</h1>
The Burmese python is a greedy and daring carnivore. It can be more than 6 meters long and can swallow almost anything that comes near it. It is estimated that there are more than 30,000 Burmese pythons living in North America's Everglades National Park, where they have few natural predators, and whose populations are increasing. A 1.5-meter-long alligator was found in the abdomen of a captured Burmese python. A large number of endangered animals are unable to withstand the attack of pythons. Global warming is particularly beneficial for this reptile.
< h1 class= "pgc-h-arrow-right" > scavenger</h1>
Lower catfish also known as "scavenger" It is a multi-spoke winged catfish of the subfamily Lower catfish in the family Catfish. Scavengers are highly viable and reproductive, and are also highly tolerant of the environment. In the wild rivers of southern China, their numbers can be said to be flooded. Whenever they appear, the other fish in the river are devastated, which makes many fishing enthusiasts hate it to the bone.
The invasion of the "scavengers" was caused by the illegal release of ignorance. The strong survival and reproduction ability of scavengers, as well as the evil egg-eating characteristics, as long as there is the presence of "scavengers", it is difficult for fish eggs in local rivers to survive, and the local fish species will be drastically reduced. The point is that the scavenger's whole body is very hard and there are hardly any predators.
<h1 class="pgc-h-arrow-right" > alligator tortoise</h1>
The alligator turtle is one of the largest freshwater turtles in the world and the largest in North America. It inhabits mainly the waters of southern North America. They can lurk in the water for up to three hours or so. Female alligator tortoises only come ashore when nesting. Crocodile turtles are "carnivores," but they also sometimes eat carrion. In northern states such as Michigan, baby alligator turtles even eat plants. They usually do this when there is no food or in the summer. When they grow up, they become omnivorous and, if few in number, pose no threat to fish stocks. However, when alligator turtles colonize to a certain extent, they pose a threat to the local river ecosystem, and they eat almost everything when food is scarce. Alligator turtles mainly eat fish and dead fish, invertebrates, carrion and amphibians. They also eat snakes and other sea turtles. Raised crocodile turtles eat any meat, including beef, chicken and pork. Adult alligator turtles also prey on small crocodiles. The crocodile turtle is a ferocious turtle species. Although they do not bite people normally, they will also attack when threatened, and their bite force can directly bite off people's fingers, so be very careful. When they are captured, they emit a musky smell. The alligator turtle is an exotic species that is large and aggressive, with few natural predators in China.