Resistance to Pyrethroid, Carbamate, and Organophosphate Insecticides in Field Populations of Tobacco Budworm (Lepidoptera: Noctuidae) in 1990

1 December 1992

journal article
Published by Oxford University Press (OUP) in Journal of Economic Entomology

Vol. 85 (6) , 2064-2072
https://doi.org/10.1093/jee/85.6.2064

Abstract

Responses of tobacco budworm, Heliothis virescens (F.), to several classes of insecticides were determined using four types of laboratory bioassays. Topical application bioassays on third instars showed 13- to IS-fold resistance to cypermethrin, 7- to 12-fold resistance to profenofos, and 7- to 10-fold resistance to sulprofos in strains collected from Louisiana in 1990. A bioassay with neonate larvae showed 139- to 173-fold resistance levels to cypermethrin in the Louisiana strains. An adult vial test showed 9- to 12-fold resistance to cypermethrin. Resistance to pyrethroid, carbamate, and organophosphate insecticides was found in strains from Louisiana and Mississippi using a spray chamber bioassay. Multiple resistance to insecticides has not been reported in H. virescens since the late 1970s. Implications for control of tobacco budworm with currently available insecticides are discussed.

Keywords

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