resistance spectrum shown by a fenvalerate-resistant strain of blue tick (Boophilus decoloratus) to a range of ixodicides

A strain of Boophilus decoloratus, resistant to fenvalerate, was subjected to larval immersion, adult immersion and stall tests using the following classes of ixodicides: organochlorines, organophosphates, a diamidide and pyrethroids. A susceptible reference strain of B. decoloratus was used for com...

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Bibliographic Details
Published inOnderstepoort journal of veterinary research Vol. 54; no. 1; pp. 79 - 82
Main Authors Coetzee, B.B, Stanford, G.D, Davis, D.A.T
Format Journal Article
LanguageEnglish
Published South Africa 01.03.1987
Subjects
Animals
Boophilus decoloratus
calves
diamidide
Immersion
Insecticide Resistance
Insecticides - pharmacology
Larva
Nitriles
organochlorine compounds
Organophosphorus Compounds
pyrethrins
Pyrethrins - pharmacology
Ticks - physiology
Toluidines - pharmacology
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Summary:A strain of Boophilus decoloratus, resistant to fenvalerate, was subjected to larval immersion, adult immersion and stall tests using the following classes of ixodicides: organochlorines, organophosphates, a diamidide and pyrethroids. A susceptible reference strain of B. decoloratus was used for comparative purposes. The results indicated a high level of resistance to DDT and camphechlor, slight tolerance to dioxathion, chlorfenvinphos and pirimiphos ethyl, full susceptibility to bromophos ethyl and amitraz, but marked resistance to cyhalothrin, cypemethrin, deltamethrin and flumethrin. This marked resistance in the strain therefore appears to be widespread within the pyrethroid group of chemicals and may have developed as a result of organochlorine cross-resistance.
ISSN:0030-2465
2219-0635