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A survey for resistance to acaricides in cattle ticks (Acari: Ixodidae) in three major traditional cattle areas in Zambia

Published online by Cambridge University Press:  10 July 2009

S. M. Luguru ,
H. G. B. Chizyuka  and
F. L. Musisi
S. M. Luguru
Affiliation:
Department of Veterinary and Tsetse Control Service, Central Veterinary Research Institute, Balmoral, P.O. Box 33890, Lusaka, Zambia
H. G. B. Chizyuka
Affiliation:
Department of Veterinary and Tsetse Control Service, Central Veterinary Research Institute, Balmoral, P.O. Box 33890, Lusaka, Zambia
F. L. Musisi
Affiliation:
Department of Veterinary and Tsetse Control Service, Central Veterinary Research Institute, Balmoral, P.O. Box 33890, Lusaka, Zambia
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Abstract

A survey for resistance to acaricides in Rhipicephalus appendiculatus Neumann, Amblyomma variegatum (F.), Boophilus decoloratus (Koch) and B. microplus (Canestrini) was carried out in three important cattle areas of Zambia during three consecutive rainy seasons (November-May) from 1981–82 to 1983–84 to determine the pattern and distribution of resistance to dieldrin, dimethoate, dioxathion and chlorfenvinphos. Resistance was assessed using the FAO resistance test kit. Resistance to dieldrin, dimethoate and dioxathion was found in a greater number of samples from Central and Southern Provinces than from Northern and Eastern Provinces. Relatively high resistance factors were recorded for R. appendiculatus against dimethoate (mean resistance factor (RF) 10·7 ± 3·8×) and dioxathion (mean RF 8·6 ± 1·9×). B. decoloratus from Central and Southern Provinces showed mixed responses to dieldrin and low resistance to dimethoate (mean RF 4·1 ± 2·3×) and dioxathion (6·4 ± 5·0×). Most samples of A. variegatum and B. microplus were susceptible to the four acaricides. Generally, most of the ticks tested showed high susceptibility to chlorfenvinphos.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 77 , Issue 4 , December 1987 , pp. 569 - 574
Copyright
Copyright © Cambridge University Press 1987

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References

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