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

Walsh, Lael E. and Gaffney, M.T and Malloch, G.L and Foster, S.P and Williamson, M.S and 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 Food and Agricultural Research, 58 (1). pp. 21-26. ISSN 2009-9029

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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 super-clone. 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.

Item Type:
Journal Article
Journal or Publication Title:
Irish Journal of Food and Agricultural Research
Subjects:
ID Code:
132422
Deposited By:
Deposited On:
24 Apr 2019 09:40
Refereed?:
Yes
Published?:
Published
Last Modified:
23 Sep 2020 05:09