Invasion of nearly 50 years of flower mosquitoes, scientific experiments have proved that the eradication rate of 94%, can still rest assured that the cool?

Someone once concluded that the black and white color scheme of animals, generally very cute, look cute, such as naive pandas, as well as the intelligence of the orcs, is very likable. Of course, there are exceptions, now that summer has come, there is a very annoying animal around, that is, the unpleasant mosquitoes, and mosquitoes, the most hated than the flower mosquitoes, you may not know, flower mosquitoes is one of the most ferocious exotic species in recent decades in China.

Once upon a time, in the countryside at night, the moonlight sprinkled on the calm water, the light breeze blowing branches, surrounded by caddies to accompany.

At this time if lying in the courtyard, is how pleasant thing, however, now, everything is no longer so good, because the night has become the main battlefield of flower mosquitoes.

Mosquito belongs to the invasive species, it is exactly what is sacred. How did it come to our country, and how to sweep the world?

Mosquitoes also called Asian tiger mosquitoes or Andes subtropical, originally lived in the tropical rain forests of Southeast Asia, with the economic and trade exchanges between Southeast Asian countries and the world, the invasion of mosquitoes with two kinds of channels, one is to follow the transport to the world, the second is the flower mosquitoes eggs stuck in the goods into the world.

Mosquitoes of their adaptability to the environment are particularly strong, the eggs of the ability to resist the cold and vitality of the powerful so that the flower mosquitoes can easily survive around the world, and soon developed into a dominant mosquito species.

In the past 20 years, the flower mosquito in more than 70 countries around the world breeding, has become one of the world's most rapid invasions of 100 species of organisms.

Now flower mosquitoes have appeared in various parts of China, in fact, the flower mosquitoes in China first appeared in the 1980s, and the speed of their spread can be seen. And the flower mosquitoes in China spread the invasion the side of the evolutionary strategy, first from the southeast coast of China, where the climate is similar to Southeast Asia, once survived in the south, they began to breed all the way north, and in the process of invasion, through evolution, gradually adapt to the northern climate, this way and red fire ants as one.

Mosquito is very aggressive mosquitoes, even people living in the city, even if the mosquito prevention measures are good enough, once the family bedroom into a flower mosquito or two, then the whole night sleep poorly. This is because the mosquitoes are in the process of attacking humans, but also accompanied by the sound of loud whistling so that people can not be bothered.

The mosquito "calls", not the mouth, but the wing vibration generated, the mosquito's wings vibrate up to 500 to 600 times per second, the wing vibration frequency of 250 to 600Hz, and this frequency is the human ear hearing frequency range.

More excessively, common mosquitoes, generally rest during the day, to the night before they start to make trouble, but the flower mosquitoes feel always full of energy, they are not only fighting at night but during the day are also everywhere to attack humans and animals.

Many people have this idea, the night encounter mosquito harassment, the brain countless times flashing such thoughts, drink some blood even if, can not call it ah.

This idea is not desirable, because this flower mosquito can carry many bacteria and viruses, and it can spread 70 kinds of insect-borne infectious diseases, according to statistics, even now medical conditions are very good, there are still 700,000 to 800,000 people die each year from infectious diseases carried by mosquitoes.

And the flower mosquito is also the most important vector of dengue fever, in 2014, in Guangdong dengue fever had more than 40,000 patients, dengue fever virus is mainly through the flower mosquitoes spread.

Flower mosquitoes have caused a great impact on people's lives, and even affect people's lives, how to eliminate this invasive species?

Mosquitoes belong to the insect, its reproduction process goes through four stages: eggs - larvae - pupae - adult mosquitoes, eliminate mosquitoes as long as any of their four stages of destruction, can stop the mosquitoes from breeding. But it is certain that once it becomes an adult mosquito is very difficult to deal with, after all, the adult mosquito is very small, and the flight speed is also very fast.

However, mosquitoes in the adult mosquitoes before the three stages are living in water, if the reduction of unnecessary sewage around, to a large extent to reduce the production of mosquitoes, but rural areas everywhere ponds, rivers, etc., so to eradicate mosquitoes by this method, obviously impossible.

The top academic journal "Nature" once had a paper on an academic experiment in the fields of China, researchers through scientific means will be mosquito transformation, in just two years, so that the two islands of Guangzhou mosquitoes are almost extinct.

Researchers take two methods: one is through a low dose of radiation to make male mosquitoes sterile, and then release the sterile mosquitoes into nature, once the sterile male mosquitoes and female mating will not be able to produce offspring; the second is through the male mosquitoes infected with "Hibachi" (Hibachi) bacteria, infected with Male mosquitoes infected with Hibachi bacteria and female mating, will produce "cytoplasmic non-fusion" phenomenon will make the eggs can not survive, to achieve the effect of sterilization of mosquitoes.

The research team was approved by the Ministry of Agriculture and conducted experiments on two islands in Guangzhou.

According to the results of the experiment, the number of Anopheles mosquitoes on the two islands decreased by 94%, and within 90 days after the experiment, there was no sign of surviving larval eggs on the two islands.

Write at the end

With its strong environmental adaptability, the mosquito has deprived people of the right to cool off under the trees in summer, and is an uncompromising "public enemy". According to the current knowledge of mosquitoes, want to rely on a single method to control mosquito populations, or more difficult, and our scientists try experimental research, which is undoubtedly a very important step in the human fight against mosquito-borne diseases.