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Possible risk factors on Queensland dairy farms for acaricide resistance in cattle tick (Boophilus microplus)

Jonsson, N.N. and Mayer, D.G. and Green, P.E. (2000) Possible risk factors on Queensland dairy farms for acaricide resistance in cattle tick (Boophilus microplus). Veterinary Parasitology, 88 (1-2). pp. 79-92.

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Article Link(s): http://dx.doi.org/10.1016/S0304-4017(99)00189-2

Publisher URL: http://www.elsevier.com

Abstract

A case control study was carried out within a cross-sectional survey designed to investigate the management by Queensland dairy farmers of the cattle tick Boophilus microplus. Although 199 farmers were surveyed, data on acaricide resistance were only obtained from 66 farms. Multiple models were used to predict the probability of acaricide resistance associated with 30 putative risk factors. The region of the state in which the farm was located and the frequency of acaricide application were consistently associated with acaricide resistance. The risk of resistance to all synthetic pyrethroids (Parkhurst strain) was highest in Central Queensland and increased when more than five applications of acaricide were made in the previous year, when spray races were used and when buffalo fly treatments with a synthetic pyrethroid were applied frequently. The probability of resistance to amitraz (Ulam strain) was highest in Central Queensland, increased when more than five applications of acaricide were made in the previous year, and decreased on farms when a hand-spray apparatus was used to apply acaricides to cattle. The probability of resistance to flumethrin (Lamington strain) was highest in the Wide Bay-Burnett region.

Item Type:Article
Additional Information:© Elsevier Science B.V.
Keywords:Cattle tick; Boophilus microplus; Dairy cows; Acaricide resistance; Amitraz; Synthetic pyrethroid; Australia.
Subjects:Veterinary medicine > Veterinary parasitology
Animal culture > Cattle > Dairying
Deposited On:05 Dec 2003
Last Modified:16 Mar 2009 06:12

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