Are mosquitoes really resistant nowadays?

Due to the long-term mosquito control of people, mosquitoes are becoming more and more resistant to mosquito repellent and mosquito control products, and the resistance of mosquitoes in Jiangsu to organophosphorus insecticides such as dichlorvos is certainly not all mosquitoes.

Darwin called the process of survival of the fittest and the elimination of the unfit in the struggle for survival as natural selection Genetic variation is the basis of biological evolution, first of all, there are variations in the resistance of mosquitoes Some are strong in drug resistance, and some are weak in drug resistance When using insecticides, the mosquitoes with weak drug resistance are killed, which is called the elimination of the unfit; Mosquitoes with strong drug resistance survive, which is called survival of the fittest Surviving mosquitoes with strong drug resistance, some of the breeding offspring have strong drug resistance, some have weak drug resistance, and when using insecticides, the mosquitoes with weak drug resistance are killed, and the mosquitoes with strong drug resistance survive In this way, after several generations of repeated selection, most of the mosquitoes that survive in the end are highly resistant, and the selection effect increases the proportion of mosquitoes that resist insecticides, and when using the same dose of insecticides, it can not play a good insecticidal role. As a result, insecticides are less and less effective in killing mosquitoes

a. The quality of pesticides is the same as in the past, a is wrong; 、

b. Genetic variation is the basis of biological evolution, first of all, there is a variation in mosquito resistance, not insecticides cause mosquito genetic mutation, so that it produces drug resistance, b is wrong;

c. The selection effect increases the proportion of mosquitoes with anti-insecticide in mosquitoes, and when the same dose of insecticide is used, it cannot play a good insecticidal role, C is correct;

d. Insecticides only kill mosquitoes that are not resistant to pesticides, and cannot make mosquitoes form a protective film against insecticides on the surface of their bodies

Therefore, c

Mosquitoes are very ferocious in summer, and even if you light mosquito coils and use mosquito repellent, it is difficult to resist these crazy mosquitoes, that is, these mosquitoes are resistant, how does mosquito resistance come about? BecauseMosquitoes reproduce very quickly, and the number base is large, so mosquitoes evolve very quickly, so there will be a lot of resistant mosquitoesLet's learn more about mosquitoes.

1. Evolutionary methods

At the beginning, most of the mosquitoes were not resistant, so the use of mosquito coils, mosquito repellent liquids and other methods to repel mosquitoes is very effective. However, the number of mosquitoes is very large, coupled with environmental pollution, there will always be a small number of mosquitoes with drug resistance, and these mosquitoes have a great possibility of sucking blood to reproduce, and mosquitoes without drug resistance can not suck blood, so they can not reproduce, so that the envy of the wisdom to breed are resistant mosquitoes, the next generation of these mosquitoes will inevitably have drug resistance, and almost all of the mosquitoes will have drug resistance after a long time of elimination and screening.

2. Correct mosquito repellent

From the above analysis, it can be seen that the use of chemical methods to repel mosquitoes is only effective in a short period of time, so in the long run, the effective way to prevent mosquitoes is still through physical methods, that is, the use of screen windows, screen doors, mosquito nets, etc. These methods can effectively isolate an independent area, as long as the mosquitoes in the room and mosquito net are eliminated, there will be no mosquitoes to disturb, and it is very convenient to use an electric mosquito swatter to eliminate mosquitoes.

3. Reduce swelling and relieve itching

After the mosquito bite, Dushan will leave a very itchy bag, and it is very to avoid being bitten by mosquitoes, these bags generally last for a long time, but don't worry, there are good ways to reduce swelling and itching in life. The most convenient way is to apply your own saliva to the bite site, preferably diluted with undrunk water, which works best. You can also use soapy water, aloe vera juice and other methods to reduce swelling and relieve itching, and the effect is also very good.

There's no harm, as long as you don't eat it, it's fine. If you eat it, it will definitely be harmful.

Hello, if the mosquito is poisonous, the dose is not too much, the impact on the body is not too great, do not follow when you use it.

There are now many unscrupulous brands on the market that have launched the so-called baby insecticides, here I must solemnly remind you that as long as it is an insecticide, there is no special for babies, because no matter what type or brand of insecticide, a large number of chemical ingredients must be added to it, and the harm of these things to babies is actually very large, so you must not believe these advertising terms.

The use of mosquito killers can cause harm to the human body, and the active ingredients of insecticides are pyrethrin and cypermethrin, which can damage the respiratory tract if used for a long time. Mosquito coils can not be commonly used, and allergies** should also be used sparingly. Pay attention to hygiene and keep the room clean so that there will be no mosquitoes.

At present, the insecticides on the market contain more or less toxic ingredients and are harmful to the human body, so when spraying insecticides in the house, people should leave the house and open the windows for ventilation after a period of time to reduce the harm to the human body.

Yes. Because mosquito killers contain chemical ingredients, improper use can harm the body.

It can cause harm to the human body. Mosquito repellent contains many chemical components that can have a negative impact on the human body.