The stability of tebufenpyrad resistance in two-spotted spider mite (Acari: Tetranychidae) under laboratory conditions.
The successful use of chemical rotations to manage insecticide resistance requires reversion between alternate chemical applications. We tested a tebufenpyrad resistant population of Tetranychus urticae Koch after some 55 months laboratory culture without pesticide selection and found LC50 level resistance had dropped from 63.29- to 2.41-fold. However, the population was still heterogeneous with LC99 level resistance at 38.03-fold. It is likely that a lack of reversion contributed directly to the initial tebufenpyrad control failure.
Herron
Grant
G
NSW Agriculture, EMAI, PMB 8, Camden NSW, 2570, Australia.
Rophail
Jeanette
J
D000818:Animals; D005260:Female; D007305:Insecticide Resistance; D007306:Insecticides; D008925:Mites; D011720:Pyrazoles
D007306:Insecticides; D011720:Pyrazoles; C429623:4-chloro-N-((4-(1,1-dimethylethyl)phenyl)methyl)-3-ethyl-1-methyl-1H-pyrazole-5-carboxamide