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How does the use of antibiotics and pesticides cause resistance in insects and bacteria?
Wiki User
∙ 12y ago
The use of antibiotics and pesticides creates an artificial selection scenario that culls bacteria and insects that cannot survive the treatments. Those micro-organisms and insects that do not succumb to the effects of antibiotics and pesticides survive to reproduce, and their offspring share their resistance to the antibiotics and pesticides that did not kill them. Now the entire population is resistant.
Here is an example of how to make a population of insects pesticide resistant (micro-organisms respond similarly to antibiotics):
Assumption: Insect Population I has a 99% mortality when exposed to Pesticide P
Stage 1: 100,000 Population I insects are treated with Pesticide P
Stage 2: Pesticide P treatment kills 99% of Population P
Stage 3: 1,000 insects survive and reproduce
Stage 4: Population R is 100% resistant to Pesticide P
Wiki User
∙ 12y ago
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What pesticides are used to kill insect pests?
Pesticides are used to prevent, kill and repel pests. The pesticides used to kill insects are attractants, fumigants, insecticides, pheromones and repellents.
Why do we spray pesticides on crops?
So insects won't eat the crops.
How would spraying a yard with chemical pesticides to control insects be most likely to affect the diversity of insects found in it?
There would be fewer species of insects and fewer insects in general in the yard.
What is an example of micro-evolution?
Insects have evolved resistance to pesticides is one.
How systhemic pesticides kill insects?
Most of them are nerve poisons - they interfere with nerve transmission.
What is an example of direct evidence for evolution is... genetic changes in plants antibiotic resistance in bacteria pesticide resistance in insects or all of the above?
genetic changes in plants, antibiotic resistance in bacteria, and pesticide resistance in insects.
Why are pesticides useful to farmers?
Reduces the percentage lost to insects or other pests such as weeds, rodents, bacteria, fungi, and birds.
How does resistance to antibiotics in humans and pesticides in insects exemplify the process of evolution by natural selection?
So, you use antibiotic on bacteria and insecticides on insects while knowing all organisms are variants and some will survive your attacks and reproduce the next generations that will also have the survivability traits. Not quite natural selection, as it is not the environment doing the selecting, but quite effective in causing evolution by selecting the alleles that will survive and reproduce. Evolution is the change in allele frequency over time in a population of organisms.
Why are pesticides used?
Pesticides are used in order to kill insects. If insects get on some types of vegetation, it can kill it.
Example of movement of pesticides in a lake from aquatic insects to the bald eagle?
The movement of pesticides in a lake from aquatic insects to the bald eagle occurs in several steps. For example, first the insects are contaminated by pesticides in the lake. If a trout consumes these insects, the trout's flesh now has pesticides in it. When the bald eagle swoops down to catch and eat the trout, it ends up eating the pesticides as well.
Does all poison affect humans?
No. Organophosphate pesticides kill insects not humans because humans can break them down. But other organophosphate poisons called nerve gases kill both insects and humans. This same effect is true for many other poisons, some organisms can break them down while others can't. Bacteria and some plants are killed by antibiotics that damage cell walls. But animals and fungi are unaffected by antibiotics as their cells lack cell walls.
How do pesticides affect blue banded bees?
Pesticides are detrimental to any type of insects as they are, quite frankly, poison. Pesticides kill some insects, or interfere with the reproductive cycle, or prevent them from feeding safely.
What pesticides are used to kill insect pests?
Pesticides are used to prevent, kill and repel pests. The pesticides used to kill insects are attractants, fumigants, insecticides, pheromones and repellents.
What is an environmental concern for insects?
one concern is, that many pesticides are killing multiple insects
Is food better for your health with pesticides or without pesticides?
pesticides kill insects. Pesticides contain carcinogenic ingredients. Pesticides have warning lables that say not to inhale them or make contact with their skin. You do the math.
How does pesticides used on farms?
To kill bugs and insects
Why do they put pesticides on apples?
to stop insects eating them
