Best answer: What insects are resistant to insecticides?

Species that have developed resistance to most insecticides used against them include the cotton leafworm, Spodoptera littoralis, in Egypt; the cattle tick, Boophilus microplus, in Australia; the housefly Musca domestica; and many species of Anopheles mosquitoes worldwide (Forgash 1984, Georghiou 1986).

What does it mean if an insect is resistant to a pesticide?

Resistance is defined as a change in the sensitivity of a pest population to a pesticide, resulting in the failure of a correct application of the pesticide to control the pest. Resistance can develop when the same pesticide or similar ones with the same mode of action are used over and over again.

Can insects become resistant to pesticides?

Insects are known for their ability to develop resistance to insecticides. … Upon exposure to insecticides, insects that do not carry the resistance genes die, thus allowing the individuals with the resistance genes to survive and reproduce, creating more resistant insects.

Which group of insects are more difficult to control by insecticides?

4. Insect egg management. Eggs are undoubtedly the hardest insect life stage to kill with insecticides.

Which is the best reason why some insects are resistant to pesticides group of answer choices?

1) There is variation in a population of insects. Genetic mutations make some insects naturally resistant to a pesticide. 3)The alleles which caused the pesticide resistance will be passed on the next generation, and so the population will evolve to become more resistant to the chemical.

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How do you fix pesticide resistance?

Managing Pesticide Resistance

  1. Minimize Pesticide Use. Minimizing pesticide use is fundamental to pesticide resistance management. …
  2. Avoid Tank Mixes. Avoid combinations (mixes) of two insecticides or miticides in a single application. …
  3. Avoid Persistent Chemicals. …
  4. Use Long-term Rotations.

Why is insecticide resistance a problem?

Over time many pesticides have gradually lost their effectiveness because pests have developed resistance – a significant decrease in sensitivity to a pesticide, which reduces the field performance of these pesticides. EPA is concerned about resistance issues.

What causes insecticide resistance?

Mechanisms of Resistance to Insecticides. There are two very important and widespread mechanisms of resistance that have been uncovered by insect toxicology researchers: (1) enhanced rates or pathways of detoxification by the insect, and (2) altered target site.

How do you control insect pests?

The best way to control both pests and diseases is to keep plants healthy.

  1. Build healthy soil. Healthy soil provides a home to friendly insects and helps prevent many plant diseases.
  2. Plant resistant varieties. …
  3. Space plants correctly. …
  4. Plant at the right times.

What are the 3 methods of pest control?

Now, let’s see how these pest control methods are used.

  • Physical methods of pest control. This is one of the natural methods of pest control; it is a non-chemical pest control method. …
  • Chemical methods of pest control. …
  • Cultural methods of pest control. …
  • Biological methods of pest control.
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