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

Correlated responses to neonicotinoid insecticides in clones of the peach‐potato aphid, Myzus... 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—thiamethoxam, 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. Copyright © 2008 Society of Chemical Industry http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Pest Management Science Wiley

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

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References (18)

Publisher
Wiley
Copyright
Copyright © 2008 Society of Chemical Industry
ISSN
1526-498X
eISSN
1526-4998
DOI
10.1002/ps.1648
pmid
18803174
Publisher site
See Article on Publisher Site

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—thiamethoxam, 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. Copyright © 2008 Society of Chemical Industry

Journal

Pest Management ScienceWiley

Published: Nov 1, 2008

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