New research funded by the Southern Sustainable Agriculture Research and Education program and conducted at the University of Georgia shows that imidacloprid residue harms wild bees.
In a first-of-its-kind study, Christine Fortuin, now a postdoctorate researcher at UGA, developed a more accurate understanding of the lethal and sublethal effects of neonicotinoid exposure on blue orchard mason bees by studying multiple pathways of imidacloprid exposure.
“Imidacloprid is a neonicotinoid, which is a group of pesticides that are highly toxic to bees. It has several common uses but my research was focused on the soil-drench application method. This is when it is applied directly to the soil and soaked up through the roots of the tree to prevent beetles and other pests,” explained Fortuin.
She worked with Kamal Gandhi, a UGA professor of forest entomology, to conduct the research through Southern SARE’s Graduate Student Grant program.
Blue orchard mason bees are one of the few bees native to North America that can be a managed pollinator for orchard crops like apples, cherries and blueberries. Mason bees are members of the Osmia bee family and are considered a wild and solitary species. They have no queens or worker bees and while this dark, metallic blue pollinator may be similar in size to a honey bee, both its lifecycle and interactions with the environment are very different.