PMID: 9430120Jan 16, 1998Paper

Efficacy of acaricidal tags and pour-on as prophylaxis against ticks and louping-ill in red grouse

Medical and Veterinary Entomology
M K LaurensonH Reid

Abstract

This paper examines the efficacy of 10% lambdacyhalothrin-impregnated plastic tags and a deltamethrin pour-on preparation in protecting red grouse chicks from parasitism by ticks and subsequent infection with the louping-ill virus. In 1995, ten red grouse hens (Lagopus lagopus scoticus) in a free-living population in north-east Scotland were fitted with lambdacyhalothrin-impregnated plastic tags, glued to radio transmitters. Chicks of more than 10 days of age from a further ten untreated radio-collared hens were caught and fitted with individual tags to the ptagium. Both treatments significantly reduced tick burdens in the short term. The number of larvae and nymphs on chicks up to 45 days was less under both treatments than on control chicks and tagged chicks had fewer nymphs than chicks from treated hens. Nevertheless, treatments did not reduce viral infection rates nor increase survival to 10 weeks, possibly explained by incomplete treatment of tagged broods and/or direct or indirect mortality due to tags. In 1996 chicks in ten broods from hens with radio transmitters were individually treated at 14 days of age at a rate of 1 mg/kg of chick with a deltamethrin pour-on preparation. This preparation significantly reduced the n...Continue Reading

Citations

Oct 25, 2002·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Peter J HudsonBryan T Grenfell
Jun 1, 2011·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Christopher P QuineDavid Uzzell
May 12, 2016·Human & Experimental Toxicology·A Ben SlimaR Gdoura
Jun 27, 2019·Journal of Medical Entomology·Henry W LydeckerDieter F Hochuli

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