The current status of resistance to organophosphorus ixodicides by the blue tick, Boophilus Decoloratus (Koch) in the Republic of South Africa and Transkei

In a four year survey 253 isolates of Boophilus decoloratus from the Republic of South Africa and Transkei were tested in the laboratory for their susceptibility to certain organophosphorus ixodicides. Fifty-seven of these isolates were susceptible to organophosphorus compounds, 88 isolates showed a...

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Published inJournal of the South African Veterinary Association Vol. 49; no. 4; p. 327
Main Authors Baker, J A, Miles, J O, Robertson, W D, Stanford, G D, Taylor, R J
Format Journal Article
LanguageEnglish
Published South Africa 01.12.1978
Subjects
Drug Resistance
Insecticides
Larva - drug effects
Organophosphorus Compounds
South Africa
Ticks
South Africa
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Summary:In a four year survey 253 isolates of Boophilus decoloratus from the Republic of South Africa and Transkei were tested in the laboratory for their susceptibility to certain organophosphorus ixodicides. Fifty-seven of these isolates were susceptible to organophosphorus compounds, 88 isolates showed a range of susceptibility between that of the susceptible laboratory strain and a strain having a resistance greater than that for the Berlin type strain. A field trial confirmed degrees of resistance shown in the laboratory to the organophosphorus ixodicides benoxophos, chlorfenvinphos, dioxathion, dicrotophos, quintiofos and chlorfenvinphos/dioxathion.
ISSN:1019-9128