Researchers say dopamine levels in mosquitoes’ brains teaches them what to avoid and where to return.
The scientists taught Aedes aegypti mosquitoes to associate odors — including human ones — with unpleasant vibrations and shocks.
Twenty-four hours after the shock was applied, the same mosquitoes were assessed in a Y-maze olfactometer, in which they had to fly upwind and choose between the once-preferred human body odor and a control odor.
The mosquitoes avoided the human body odor, suggesting they had been successfully trained.
According to Vinauger, mosquitoes are the deadliest member of the animal kingdom, causing more deaths per year than any other creature.