How is the process of spraying pestices to kill mosquitoes help produce mosquitoes that are resistant to pesticides

Answer 1

the spraying of pesticides may kill the mosquitoes but the remaining mosquito that survive the chemical grow an immunity to the pesticide causing them to grow a gene that prevents the insect to die to the pesticides

Also when the pesticides reproduce they create new mosquitoes that are immune to the pesticides making the pesticides usless

Answer 2

If the mosquito gets a little of the spray, enough to make it sick but not enough to kill it, the mosquito's body, over time, builds up a resistance to the pesticide. It works the same way in humans. If I get measles when I'm a child, I build up an immunity to that disease and I don't get measles anymore during my lifetime. If I take an antibiotic to get rid of some disease BUT I don't completely kill all the bacteria causing the disease (because I took enough antibiotic to make me feel better but a few of the bacteria survived) so those bacteria build up an immunity to the antibiotic. The next time I get that disease, that antibiotic is less effective in fighting it off.

Answer 3

Pesticides reproduce??

Answer 4

I don't think mosquitoes live long enough that acquired resistance to insecticide exposure would be a factor. But the bacteria analogy is correct. What happens is that natural resistance to insecticides varies in a given population of mosquitoes. When they are sprayed, some of the individuals with the genetically determined resistance survive, so that, in effect, the spraying is selecting for a population of resistant bugs. (The resistant critters go on to reproduce and so the population itself becomes resistant.) Unfortunately, it's becoming evident that the genes that confer resistance don't necessarily disappear when spraying is discontinued.