The 2005 ESA Annual Meeting and Exhibition
December 15-18, 2005
Ft. Lauderdale, FL

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Thursday, December 15, 2005 - 10:30 AM

Wireworms, neonicotinoids and the Lazarus syndrome

Robert, S. Vernon, vernonbs@agr.gc.ca1, Wim van Herk, vanherkw@agr.gc.ca1, and Jeff H. Tolman, tolmanj@agr.gc.ca2. (1) Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, 6947 #7 Highway, P.O. Box 1000, Agassiz, British Columbia, Canada, (2) Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford St, London, Ontario, Canada

Efficacy of insecticides against many species of wireworms is often measured by indirect observations of associated wireworm damage (i.e. stand, yield and/or cosmetic damage) to various crops. This paper examines the effects of various classes of insecticides on a major wireworm pest, Agriotes obscurus, using direct toxicological criteria in laboratory bioassays, and direct and indirect criteria in field trials involving wheat and potatoes. The long term intoxication and subsequent recovery of wireworms exposed to various neonicotinoid insecticides is the focal point of this paper.

Species 1: Coleoptera Elateridae Agriotes obscurus (Dusky Wireworm)
Species 2: Coleoptera Elateridae Agriotes lineatus (Lined Click Beetle)
Keywords: Insecticidal Control, Contact Toxicity

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