In vitro insecticide resistance patterns in field strains of the sheep blowfly, Lucilia cuprina.

The control of the sheep blowfly relies on the use of insecticides. There have been several reports of in vitro and in vivo resistance to the most widely-used flystrike control chemical, dicyclanil. A recent report also described in vitro resistance to imidacloprid in a strain collected from a single property over three consecutive seasons that also showed resistance to dicyclanil. The present study aimed to use in vitro assays to examine five field-collected blowfly strains to determine if this co-occurrence of resistance to dicyclanil and imidacloprid was present more widely in field strains and to also measure resistance patterns to the other currently-used flystrike control chemicals. Each of the strains showed significant levels of resistance to both dicyclanil and imidacloprid: resistance factors at the IC

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Déclaration de conflit d'intérêts

Declaration of Competing Interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Andrew Kotze reports financial support was provided by Elanco Australasia. Andrew Kotze reports financial support was provided by Commonwealth Scientific and Industrial Research Organisation. Nicholas Rolls and Sarah George are paid employees of Elanco Australasia. All other authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.