A note on current pyrethroid susceptibility in the bird cherry-oat aphid Rhopalosiphum padi in Ireland

George, A., Meally, H., Foster, Stephen, Williamson, Martin, Walsh, L., Carroll, J., Gaffney, M. T. and McNamara, L. (2022) A note on current pyrethroid susceptibility in the bird cherry-oat aphid Rhopalosiphum padi in Ireland. Irish Journal of Agricultural and Food Research, 61 (12). pp. 407-411. 10.15212/ijafr-2022-0106

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The objective of this study was to observe the response of the bird cherry oat aphid, Rhopalosiphum padi (Linnaeus, 1758) to field rate equivalents of insecticides, by using bioassays of vials coated with the pyrethroid, λ-cyhalothrin. The results from the geographically separated Irish R. padi colonies indicated a susceptible response, which was a similar finding to the UK which showed sensitivity in this species of cereal aphids. Monitoring the susceptibility status of aphids using bioassays gives information regarding developments of any tolerance, which could be a precursor, or resistance against the target chemical insecticide, which is an important integrated pest management tool.

Item Type	Article
Open Access	Gold
Additional information	This research was funded under the South East Technological University, President’s Fellowship scheme under Envirocore and Teagasc Internal Funding. Rothamsted Research receives grant support from BBSRC.
Keywords	Bird cherry-oat aphid, Pyrethroid, Tolerance, Rhopalosiphum padi
Date Deposited	05 Dec 2025 10:38
Last Modified	19 Dec 2025 14:56