Journal article

Learnings from over a decade of increasing pesticide resistance in the redlegged earth mite, Halotydeus destructor (Tucker)

Aston L Arthur, James Maino, Ary A Hoffmann, Moshe Jasper, Alan Lord, Svetlana Micic, Owain Edwards, Anthony van Rooyen, Paul A Umina



BACKGROUND: The redlegged earth mite, Halotydeus destructor (Tucker), is a destructive and economically important pest of winter grain crops and pastures in Australia. It is largely controlled by pesticides, but this mite has evolved resistance to pyrethroid and organophosphate chemicals. A national Resistance Management Strategy has been developed for pro-active management to delay further resistance evolution, though its success is reliant on a detailed understanding of the incidence, patterns of spread, current distribution and the nature of resistance in the field. Here, we report on a long-term resistance surveillance programme undertaken between 2006 and 2019 informed by resistance ris..

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Funding Acknowledgements

The authors thank the many agronomists and farmers who aided in mite collections, provided assistance with field sites and provided field history information. The authors thank Lisa Kirkland, Josh Douglas, Olivia Reynolds, Jenny Reidy-Crofts, Xuan Cheng, Matt Binns, Peter Mangano, Nick Bell, Clay Sutton, Thomas Heddle, Isobel Roberts and Tiana Rey for technical input and assisting with field collections. Thanks also to Amol Ghodke and Andrew Weeks for assisting with the molecular analysis of pyrethroid resistance. This work was supported through funding from the Grains Research and Development Corporation.