Resistance to dicyclanil and imidacloprid in the sheep blowfly, Lucilia cuprina, in Australia.

ABSTRACT:

Background

The sheep blowfly, Lucila cuprina, is a myiasis-causing parasite responsible for significant production losses and welfare issues for the Australian sheep industry. Control relies largely on the use of insecticides. The pyrimidine compound, dicyclanil, is the predominant control chemical, although other insecticides also are used, including imidacloprid, ivermectin, cyromazine and spinosad. We investigated in vitro resistance patterns and mechanisms in field-collected blowfly strains.

Results

The Walgett 2019 strain showed significant levels of resistance to both dicyclanil and imidacloprid, with resistance factors at the IC₅₀ of 26- and 17-fold, respectively, in in vitro bioassays. Co-treatment with the cytochrome P450 inhibitor, aminobenzotriazole, re

SUBMITTER: Kotze AC 

PROVIDER: S-EPMC9540573 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature