The evolving story of sulfoxaflor resistance in the green peach aphid, Myzus persicae (Sulzer)

Author:

Ward Samantha1ORCID,Jalali Tara12,van Rooyen Anthony1,Reidy‐Crofts Jenny3,Moore Karyn1,Edwards Owain3,Umina Paul A12ORCID

Affiliation:

1. Cesar Australia Brunswick VIC Australia

2. School of BioSciences, Bio21 Institute The University of Melbourne Parkville VIC Australia

3. CSIRO Environment Floreat WA Australia

Abstract

AbstractBACKGROUNDThe green peach aphid, Myzus persicae (Sulzer), is one of the most economically important crop pests worldwide. Insecticide resistance in this pest was first detected over 60 years ago, with resistance in M. persicae now spanning over 80 active ingredients. Sulfoxaflor is a relatively new insecticide that is primarily used to control sap‐feeding insects. In 2018 resistance to sulfoxaflor was discovered in field populations of M. persicae in Australia. This study aimed to determine the current distribution and phenotypic levels of sulfoxaflor resistance in Australian clones of M. persicae and to investigate how these patterns relate to clonal type.RESULTSFor the first time, we show there is low‐level resistance (8–26‐fold) distributed across Australia, with resistance being detected in aphids collected from approximately 20% of all M. persicae collected and screened. Furthermore, this study shows sulfoxaflor resistance is found in two M. persicae haplotypes, providing evidence that there have been multiple independent evolutionary events which have given rise to sulfoxaflor resistance in this species.CONCLUSIONThese findings have important implications for the chemical control of M. persicae in Australia, especially when considering the broader genetic background of these aphids which are known to harbour a number of other insecticide resistance mechanisms. We recommend continuous monitoring of sulfoxaflor resistance in field populations of M. persicae (in Australia and elsewhere) and further research into the underlying genetic mechanisms conferring resistance to sulfoxaflor in both clonal haplotypes. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

Funder

Corteva Agriscience

Grains Research and Development Corporation

Publisher

Wiley

Subject

Insect Science,Agronomy and Crop Science,General Medicine

Reference57 articles.

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