Bioassay and field-simulator studies of the efficacy of pymetrozine against peach-potato aphids,Myzus persicae (Hemiptera: Aphididae), possessing different mechanisms of insecticide resistance |
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Authors: | Foster Stephen P Denholm Ian Thompson Robin |
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Institution: | Division of Plant and Invertebrate Ecology, IACR-Rothamsted, Harpenden, Herts AL5 2JQ, UK. stephen.foster@bbsrc.ac.uk |
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Abstract: | Twenty-one clones of the peach-potato aphid, Myzus persicae (Sulzer), carrying various combinations of known mechanisms of insecticide resistance were assessed for their response to the new pyridine azomethine compound, pymetrozine, in leaf-dip bioassays. Pymetrozine was also applied as a foliar spray to populations of four different UK M persicae clones on potato plants in field-simulator chambers. Neither study showed any evidence of cross-resistance to this compound. Pymetrozine, used in conjunction with other effective aphicides, such as pirimicarb and imidacloprid, can therefore play an important role in insecticide resistance-management strategies for M persicae. |
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Keywords: | Myzus persicae pymetrozine esterase MACE knock‐down resistance insecticide resistance |
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