First evidence of retained sexual capacity and survival in the pyrethroid resistant Sitobion avenae (F.) (Hemiptera: Aphididae) SA3 super-clone following exposure to a pyrethroid at current field-rate.

A - Papers appearing in refereed journals

Walsh, L. E., Gaffney, M. T., Malloch, G. L., Foster, S. P., Williamson, M. S., Mangan, R. and Purvis, G. 2019. First evidence of retained sexual capacity and survival in the pyrethroid resistant Sitobion avenae (F.) (Hemiptera: Aphididae) SA3 super-clone following exposure to a pyrethroid at current field-rate. Irish Journal of Agricultural and Food Research. 58 (1), pp. 21-26.

AuthorsWalsh, L. E., Gaffney, M. T., Malloch, G. L., Foster, S. P., Williamson, M. S., Mangan, R. and Purvis, G.
Abstract

The grain aphid Sitobion avenae is a prolific pest of cereal crops worldwide, controlled effectively with pyrethroid insecticides. However, the classic knock down resistance (kdr) mutation, L1014F on the S. avenae sodium channel gene, has been identified as the cause of the recently observed heterozygous (kdr-SR) resistance in the SA3 grain aphid superclone. Results indicate that the kdr-SR SA3 clone can survive pyrethroid exposure above twice the normal field rate, continuing to reproduce thereafter. Additionally, the SA3 clone was found to be capable of producing sexual oviparous morphs, able to lay eggs following pyrethroid exposure. This demonstrates that possession of the L1014F mutation does not preclude the capacity to produce sexual morphs. This makes the adoption of an effective resistance management strategy imperative, within a wider integrated pest management (IPM) approach to control grain aphid.

KeywordsGrain aphid; Pyrethroid; Reproduction; Resistance; SA3 clone
Year of Publication2019
JournalIrish Journal of Agricultural and Food Research
Journal citation58 (1), pp. 21-26
Digital Object Identifier (DOI)doi:10.2478/ijafr-2019-0003
Open accessPublished as green open access
FunderBiotechnology and Biological Sciences Research Council
Department of Environment, Food and Rural Affairs
Publisher's versionwalsh19ijafr.pdf
Output statusPublished
Publication dates
Online17 Apr 2019
PublisherTeagasc
ISSN0791-6833

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