The weather is getting colder and colder, but why are mosquitoes getting more and more fierce?

The recent weather in the north is commendable since the continuous high temperature warning was lifted some time ago. In addition to the sun at noon, there is a breeze in the morning and evening, and autumn is getting stronger. Very comfortable ~

However! After the crisp autumn, there are still troubles. . . For example, mosquitoes seem to be more effective recently. Compared with summer, they are more tenacious and never give up without harvest! After being bitten, the bag on the body is bigger and redder, and the skin is more prone to redness, inexplicably and painfully.

Don't mosquitoes like heat? Why do mosquitoes become more fierce when the weather gets cold?

In fact, mosquitoes are also afraid of heat.

Contrary to your impression, mosquitoes don't like living in high temperature, and they also "don't like heat". Studies show that they will not move too much at the temperature below 15℃ because they are afraid of cold. The temperature in early autumn is neither too hot nor too cold. Not only humans like it, but also mosquitoes like it. So mosquitoes reach their peak two or three days after the rain.

Mosquito reproduction is related to meteorological conditions.

The reproduction of mosquitoes is related to meteorological conditions. For example, under appropriate temperature and humidity conditions, the life span of Anopheles (a mosquito) is about one month, and the optimal humidity range in the air is 60-80%. At a suitable temperature, the life span of Anopheles mosquitoes is short at low humidity and long at high humidity. If the temperature is too high and the humidity is too low, it is difficult for Anopheles to survive.

In autumn, due to the hot and humid weather in the early stage, many low-lying places have water and become a pool of stagnant water. Mosquitoes are inseparable from stagnant water in the three stages of eggs, larvae and pupae before adults. Such a place is very conducive to the breeding of mosquitoes.

Mosquitoes breed in the pool. In two or three days, the larvae will grow feathers, start sucking blood for nutrition, and then grow wildly. A new generation of young people and strong people are looking for signals everywhere. Once they find the target, they will rush to take a bite. This is why mosquitoes are particularly fast in autumn.

Are mosquitoes in autumn fierce to the next generation?

Mosquitoes will become sharper in autumn. Another reason is that they will start laying eggs for the winter in autumn. September and October are the last breeding peaks of mosquitoes in a year. Laying eggs requires more nutrition in order to provide more nutrition and a better winter for future generations. So mosquitoes will bite extra hard.

Some blood types are more likely to cause mosquitoes?

Song Zhiqiang, a professor of dermatology at Southwest Hospital of the Third Military Medical University, said that mosquitoes have no special function to distinguish human blood types without scientific basis. It is not blood type that deserves attention, but living habits: First, take a bath frequently and keep your skin clean. Lactic acid in sweat is very attractive to mosquitoes; Second, wear less dark clothes. Mosquitoes like wet, dark and dark clothes, which is easy to create such an environment; Third, wear less makeup. Most cosmetics are easy to attract mosquitoes because they contain many chemicals.

When a mosquito buzzes in your ear, it will use its proximity sensor to measure the temperature of your skin and the humidity of your sweat to determine whether you are a suitable target. Generally speaking, people with dark skin color, high temperature, excessive sweating, large vital capacity and frequent activities are the objects that mosquitoes like to choose. For example, children are more active, and they are more attracted to mosquitoes. In order to prevent mosquito bites, the family environment should be ventilated and ventilated, and the accumulated water should be cleaned up in time after the rain, because mosquitoes are easy to breed in wet places. Screen windows, screen doors and mosquito-killing drugs can be installed in the room, and it is best to apply mosquito-killing liquid when playing in the wild.

Song Zhiqiang suggested: "Itching after being bitten, try not to scratch, because bacterial infection is easy to occur when the skin is scratched." If you have mild itching and rubella, gently pat it, wet it with cold water, smear it with dew or essence cream, or mash Artemisia annua, aloe, tea and other plants into juice for external application.

"Skin diseases caused by mosquito bites can't be ignored", Song Zhiqiang stressed, only itching and rash are mild, and severe cases may be infected with infectious diseases such as malaria, Japanese encephalitis and dengue fever. If there are serious reactions such as diarrhea, fever and systemic allergy after mosquito bites, you should go to the hospital in time.