10. Nicotine-Mimics: Mode of Action

Many commonly used insecticides exert their toxic actions by over-stimulating the acetylcholine messenger system that transfers of information between neurons within the nervous system. There are two ways by which insecticides over-stimulate the acetylcholine messenger system. First, inhibition of acetylcholinesterase, as described for the organophosphate and carbamate insecticides, causes natural acetylcholine to accumulate in the […]

Continue Reading...

13. Insecticide Resistance-Population Level

Here we see a population of pest insects. If you look closely, several individuals look slightly different. These unique individuals represent the small number of mutant insecticide-resistant individuals that occur normally within any population. In this example, we see the population being treated with a cloud of insecticide such such as an organophosphate or carbamate […]

Continue Reading...