No evidence for neonicotinoid preferences in the bumblebee .

Neonicotinoid pesticides can have a multitude of negative sublethal effects on bees. Understanding their impact on wild populations requires accurately estimating the dosages bees encounter under natural conditions. This is complicated by the possibility that bees might influence their own exposure: two recent studies found that bumblebees () preferentially consumed neonicotinoid-contaminated nectar, even though these chemicals are thought to be tasteless and odourless.