Insecticide resistance and the Colorado potato beetle: Current status and future directions.
Citation
Scott, I.M. 2017. Insecticide resistance and the Colorado potato beetle: Current status and future directions. Invited oral presentation for the 2017 Canadian Biopesticides & Minor Use Pesticides Priority Setting Workshops, Gatineau, QC, March 21, 2017.
Plain language summary
A Special Session on Resistance Management was held by the Minor Use Pesticides Priority Setting Workshop to address concern of pesticide resistance in Canadian agriculture. I gave a presentation on the current state of insecticide resistance in Colorado potato beetle populations based on recent surveys of insecticide susceptibility. The findings indicate that CPB populations have become less sensitive to neonicotinoids with cross-resistance observed between first and second generation neonicotinoids becoming a growing concern. this information is important to potato growers and agrichemical industry. A larger survey is planned for Canadian potato regions in 2017 and 2018.
Abstract
Over the past 10 years, surveys of insecticide susceptibility in Colorado potato beetle (CPB) populations in Canada have determined that CPB have become less sensitive to the neonicotinoid, imidacloprid, and cross-resistance with second generation neonicotinoids, thiamethoxam and clothianidin is a growing concern. The positive findings from these surveys is that the problem with reduced sensitivity to neonicotinoid insecticides has not reached the levels observed in the U.S. Minimal cross-resistance between modes of action of the neonicotinoid and a second class of registered products, anthranilic diamides, was also determined. In summary, the surveys emphasize the need for more growers to adopt effective integrated resistance management strategies for effective, sustainable CPB control.