Insecticide resistance and the Colorado potato beetle.

Citation

Scott, I.M. 2018. Insecticide resistance and the Colorado potato beetle. Invited presentation for the Biochemistry Department, Universite de Moncton, Moncton NB, April 27, 2018.

Résumé en langage clair

This presentation for graduate students was an introduction to AAFCs on-going monitoring of insecticide resistance in pest insect populations and related research that was initated to improve detection of resistance in Colorado potato beetles. Over the past 10 years surveys of Canadian CPB populations indicated decreased sensitive to neonicotinoid insecticide products was a growing concern. New tools are being developed to measure genetic changes related to metabolic enzymes and alterations in the regulation of metabolic protein production as novel tools to monitor for the development of resistance. This will be important for potato growers and industry to help sustain the insecticides over a longer lifetime.

Résumé

The Colorado potato beetle (CPB), Leptinotarsa decemlineata (Say) [Coleoptera: Chrysomelidae], is considered one of the most destructive foliage-feeding, insect pests of potatoes in Canada. A critical component of an effective, sustainable integrated management program for any important insect pest such as CPB is to monitor susceptibility to commercial control agents and to establish baseline tolerance data for recently introduced reduced risk insecticides. This knowledge: permits determination of optimum rates of application for effective control; facilitates development of effective resistance management strategies; and identifies populations where control challenges might first be expected. The presentation will summarize recent research at Agriculture and Agri-Food Canada (AAFC) monitoring CPB populations in different parts of the country for neonicotinoid resistance and cross-resistance with other insecticides and prospects for future CPB resistance work and new management options for controlling the beetles.

Date de publication

2018-04-27

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