Although many places have entered winter mode and the temperature has dropped. Normally, mosquitoes should have stopped. But the fact is that some people's homes have been fighting mosquitoes from summer to now without being affected at all. I always feel that they have adapted to temperature changes faster than humans. People can't help but wonder, have they evolved or mutated?
Do you know? Regarding the fact that their tolerance to temperature has increased, if you want to know about the changes in mosquitoes in some places, you will say that they are "defying the heavens"!
According to People's Daily Online 25 report: Scientists in Cambodia and Vietnam have discovered a highly resistant "super mosquito". Female individuals can consciously avoid places where pesticides have been sprayed. In Cambodia and Vietnam, up to 78% of the mosquitoes that spread dengue, jaundice and Zika have mutated.
Research shows that two types of mosquitoes have developed resistance. After being exposed to non-lethal doses of pesticides, their female individuals consciously avoid places where pesticides have been sprayed. This means that mosquitoes seem to be gradually acquiring the ability to resist human pesticides, both physically and intuitively.
A study of the genomes of two populations of mosquitoes in Vietnam that are highly resistant to this insecticide found that a specific variant called L982W is associated with pyrethroid resistance. Mosquitoes carrying this mutation are 50-100 times more tolerant to insecticides, and in extreme cases can survive 500 to 1,000 times higher doses of pyrethroids.
The announcement of this result may pose a serious threat to the prevention and control of infectious diseases.
Good guy, it feels like scenes from some science fiction movies are coming true.
Mosquitoes are all The deadliest existence among pests
According to World Health Organization (WHO) statistics, among all pests, mosquitoes are the most deadly killer. Its published data shows that about 725,000 people die every year due to mosquito bites. The American "Gates notes" website listed the animals that kill the most people every year in 2016, among which mosquitoes are the number one killer of humans.
Why do mosquitoes prefer humans?
Scientific research shows that mosquitoes that originally came from very densely populated areas with humans - more than 5,000 people per square mile - preferred humans. A bigger factor, though, is climate. Specifically, mosquitoes from places that experience long, hot and dry seasons after the rainy season prefer humans.
How did mosquitoes find "us"?
The direction of evolution of mosquitoes seems to be a bit aimed at humans. One of my biology friends joked that if humans have a natural enemy, mosquitoes might be it. At least mosquitoes want to become human beings' natural enemies. Late at night in summer, when we hide under the quilt and then quietly expose our heads to breathe, mosquitoes can always find you as quickly as possible.
How do mosquitoes do it? In fact, finding humans is very simple. Mosquitoes locate humans through the density of carbon dioxide . There are some very special short hairs on the mosquito's antennae, which function like radar and can quickly detect chemical substances in the air, especially the concentration of carbon dioxide and the humidity of the air.
When you quietly poke your head out of the quilt, in the eyes of mosquitoes, the carbon dioxide you exhale is as obvious as the sun. In the same way, mosquitoes can quickly find humans in jungles and wild places and bring their whole families to have dinner.
