Use of common pesticide, imidacloprid, linked to bee colony collapse

We know that, Imidacloprid is a systemic insecticide which acts as an insect neurotoxin and belongs to a class of chemicals called the neonicotinoids which act on the central nervous system of insects with much lower toxicity to mammals. The chemical works by interfering with the transmission of stimuli in the insect nervous system. Specifically, it causes a blockage in a type of neuronal pathway (nicotinergic) that is abundant in insects and not in warm-blooded animals (making the chemical selectively toxic to insects and not warm-blooded animals). This blockage leads to the accumulation of acetylcholine, an important insect neurotransmitter, resulting in the insect's paralysis, and eventually death. It is effective on contact and via stomach action

Use of common pesticide, imidacloprid, linked to bee colony collapse: The likely culprit in sharp worldwide declines in honeybee colonies since 2006 is imidacloprid, one of the most widely used pesticides, according to a new study.