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  • Title: The in vitro response of sheep scab mites to pyrethroid insecticides.
    Author: Coles GC, Stafford KA.
    Journal: Vet Parasitol; 1999 Jun 30; 83(3-4):327-30. PubMed ID: 10423014.
    Abstract:
    The response of sheep scab mites to pyrethroid insecticides and organophosphate compounds was studied in vitro with the objective of finding a simple test for detecting insecticide resistance in scab mites. Psoroptes cuniculi from rabbits or P. ovis from sheep were enclosed in small 'tea bags' made from heat sealable paper prior to dipping in insecticide. Mites failed to die 24 h after a 1 min dip in working concentrations of insecticidal sheep dips. With flumethrin a variety of different conditions were tested but most failed to improve the efficacy of flumethrin. It is suggested with freshly collected mites pyrethroids may be taken up by ingestion.
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