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        Correlated responses to neonicotinoid insecticides in clones of the peach-potato aphid, Myzus persicae (Hemiptera: Aphididae)

        Author
        Foster, Stephen P.
        Cox, Diana
        Oliphant, Linda
        Mitchinson, Samantha
        Denholm, Ian
        Attention
        2299/11491
        Abstract
        BACKGROUND: Although there are still no confirmed reports of strong resistance to neonicotinoid. insecticides in aphids, the peach-potato aphid (Myzus persicae Sulzer) shows variation in response, with some clones exhibiting up to tenfold resistance to imidacloprid. Five clones varying in response to imidacloprid were tested with four other neonicotinoid molecules to investigate the extent of cross-resistance. RESULTS: All four compounds-thiarnethoxam, thiacloprid, clothianidin and dinotefuran-were cross-resisted, with ED50 values ranked in the same order as for imidacloprid. Resistance factors ranged up to 11 for imidacloprid, 18 for thiamethoxam, 13 for thiacloprid, 100 for clothianidin and 6 for dinotefuran. CONCLUSION: This variation in response does not appear to be sufficient to compromise the field performance of neonicotinoids aimed at controlling aphids. However, it highlights the need for careful vigilance and stewardship in all M. persicae populations, and a need to consider neonicotinoids as a single cross-resisted group for management purposes. (c) 2008 Society of Chemical Industry
        Publication date
        2008-11
        Published in
        Pest Management Science
        Published version
        https://doi.org/10.1002/ps.1648
        Other links
        http://hdl.handle.net/2299/11491
        Relations
        School of Life and Medical Sciences
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