Which insectides are mostly toxic to the insects and why? Which are toxic to insects and humans and may also affect bees?

Question

Quizplus · Accepted Answer

The Answer is The malathion or parathion pesticides required enzymatic activation to an oxon that was the toxic species. Mammals have enzymes that avoid this step by hydrolysis and convert the toxic oxon to a less toxic metabolite. Insects mainly have to go through the activation step, but this is problematic for bees. A compound this is toxic to all is nicotine. This compound from tobacco is toxic to humans, insects and bees. The neonicotinoids have recently been investigated due to severe apriary population declines that may at least in part be explained by the effects of neonicotinoids on bee behavior.

Which Insectides Are Mostly Toxic to the Insects and Why