Whether at home or abroad, for any country, the invasion of alien species is a rather difficult problem, so what is the invasion of alien species? We must understand two points: first, this species must be alien, that is, a species that is not native; second, this species can settle, survive, reproduce and spread in the local natural environment, and even have no natural enemies, resulting in the impact of the local ecological environment, destroying the ecosystem, and damaging the local biodiversity.
In recent years, the United States has also suffered from the invasion of many alien species. Giant Asian tiger shrimp in the Gulf of Mexico can grow as long as an arm because there are no natural predators and are flooded. Florida's giant Gambia has kangaroos and African giant snails, which have a huge impact on local crop cultivation, in addition to the giant goldfish in Nedahua and the Asian carp that has spent tens of billions of dollars to manage, and recently a new alien species has invaded the United States, that is, the Burmese python.
The Burmese python is mostly inhabited by tropical rainforests and is known for its huge size, which can reach 7 meters in length and can weigh up to 91 kilograms. Burmese python local Southeast Asia, why did it cross the ocean to appear in the United States? In Florida, some people take the Burmese python as a pet to raise, they think that there are fewer people who keep pythons, and they will be better domesticated, and after a long time, these people do not want to raise them, they will release these Burmese pythons in the wetland park, because they are exotic species, and there are no natural enemies, the Burmese pythons for a time almost ate the local animals clean, and rapid reproduction, which led to the local animals such as wetland raccoons, possums and bobcats The number of local animals fell by 99.3%, 98.9% respectively. And 87.5%, in addition to swamp rabbits, cottontail rabbits and foxes have disappeared.
Many netizens see this situation, have left a message saying "this is a delicious high protein, must be very delicious!", in fact, the United States Burmese pythons live in the swamp, because for a long time to survive in the swamp, its body contains seriously exceeding the standard of toxic metal mercury, humans can not use it at all. Why is it that Burmese pythons can spread in Florida with little success? Because there are more than 60,000 square meters of swamps in Florida, this is undoubtedly the survival paradise of giant pythons. The mottled brown skin of the Burmese python blends well into the bushy environment, because it is not known how many snakes are in this area, full of great inaccessibility, so it is difficult to investigate.
American locals have thought of a lot of ways, such as putting short-tailed crocodiles in the wetland park to bite the Burmese python, although the short-tailed crocodile can bite the Burmese python, but a wetland park is full of short-tailed crocodiles and Burmese pythons, no one dares to go to this wetland park to play again. In addition, the United States has a policy of heavy rewards for catching snakes, some people have organized professional snake hunting teams, and some people have made a fortune because of snake hunting, but the results have been minimal, and the problem of Burmese python invasion is still not well solved.
With the ecological environment more and more globalized, a variety of local characteristics of animals and plants also as "pets" into the various places that do not belong to them to survive, a test tube or a container can destroy the ecological environment of a place, and once the problem is formed, there is almost no possibility of complete elimination, China's customs in recent years is also constantly checking out some exotic species, to avoid influx into the country, from causing ecological damage. Therefore, at this stage, the most effective measure for us to combat alien species is to "stay out of the country", the customs department to increase inspection efforts to ensure that there are no fish that have slipped through the net, we must also prohibit the purchase of alien species, dispel the idea of buying alien species as pets, and jointly protect the ecological environment.