Toxicity of insecticide-bait mixtures to insecticide resistant and susceptible western corn rootworms (Coleoptera: Chrysomelidae)

Abstract

Organophosphate resistant and susceptible populations of the western corn rootworm, Diabrotica virgifera virgifera LeConte. were subjected to adult feeding bioassays with different combinations of insecticide and a cucurbitacin bait. Five technical grade insecticides (methyl-parathion, carbaryl, fipronil, bifenthrin and indoxacarb) were used in combination with Invite ECt as the feeding stimulant. Differences in susceptibility to the insecticide/bait combinations were observed among the resistant and susceptible populations for methyl-parathion and carbaryl. Susceptibility to fipronil, bifenthrin and indoxacarb was similar among the resistant and susceptible populations. Assays in which response to the insecticide/bait combination was compared with the bait alone indicated that methyl-parathion and bifenthrin were deterrent when compared to other treatments. These results suggest that the efficacy of Invite as a feeding stimulant in combination with certain insecticides may be compromised by previously identified resistance and by insecticides that antagonize the feeding stimulation of the cucurbitacin bait. r 2003 Elsevier Science Ltd. All rights reserved.

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Cite this paper

@inproceedings{Parimi2017ToxicityOI, title={Toxicity of insecticide-bait mixtures to insecticide resistant and susceptible western corn rootworms (Coleoptera: Chrysomelidae)}, author={Srinivas Parimi and Lance J. Meinke and Timothy M. Nowatzki and Laurence D. Chandler and Bradley Wade and Blair D. Siegfried}, year={2017} }