Popular insecticides called neonicotinoids are disrupting bumblebee life, causing big decline in bee populations. Though the harm caused by this type of insecticide has never been studied, it has not been how
The study, which has recently been published in Science found that this insecticides can decrease a bee colony's viability even if the exposure is non-lethal. This effect is due to behavioral changes that decrease the bumblebees' abilities to survive, in colony thermoregulation and nest activities.
During the research, bumblebees were continuously examined using automated equipment. Researchers noted that the exposure to insecticides typically used in fields decreased. As well, the insecticide was found to change the "social and spatial dynamics" of these nests.
The problems were not limited to just behavioral changes and therefore involved colony thermoregulation. Bees exposed to the insecticides were not capable of creating the wax canopy.
A growing body of evidence pointing to neonicotinoid bee disruption has fueled a number of bans and restrictions. Earlier this year, European Union member states voted in favor of this insecticide that covers almost all usage scenarios. That followed a partial ban by the EU in 201