Butox 7.5 pour on: a deltamethrin treatment of sheep and cattle: pilot study of killing effects on Culicoides species (Ceratopogonidae)

Parasitology Research
Heinz MehlhornBärbel Schumacher

Abstract

Topical treatment (at the neck and along the vertebral column) with deltamethrin (Butox 7.5 pour on) of cattle (30 ml/400-kg body weight) and sheep (10 ml/60-kg body weight) was done to find out, whether the insecticide may reach in a sufficient dosage the legs, which are known to be the main biting site of Culicoides specimens that are the vectors of the recently introduced Bluetongue virus in central Europe. At days 7, 14, 21, 28, and 35 after treatment, some hair was cut off from the legs--close to the claws. Freshly (the night before) caught Culicoides obsoletus specimens were then exposed for 15, 30, 60, or 120 s to such hair and afterwards transferred to a filter paper within plastic Petri dishes to observe their fate. It turned out that even a short contact of 15 s of the Culicoides specimens with deltamethrin-treated hair of cattle or sheep was sufficient to paralyze and kill Culicoides specimens within a reasonable short time even when the hair were cut off at day 28 after treatment. While the results obtained in cattle and sheep were rather similar for days 7 and 14 after treatment, the speed of the killing effect of treated hair of cattle on Culicoides considerably slowed down beginning from day 21 after treatment. H...Continue Reading

References

Feb 1, 1995·Annals of Tropical Medicine and Parasitology·P S Mellor, J Boorman
Oct 3, 2002·The Veterinary Journal·P S Mellor, E J Wittmann
Feb 3, 2005·Nature Reviews. Microbiology·Bethan V PurseMatthew Baylis

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Citations

Jul 24, 2008·Parasitology Research·Günter SchmahlHeinz Mehlhorn
Dec 17, 2008·Parasitology Research·Heinz MehlhornGünter Schmahl
Jan 24, 2014·Parasitology Research·Renke LühkenSonja Steinke
Apr 29, 2014·Parasitology Research·Wiebke WeiherPeter-Henning Clausen
Jan 23, 2015·Molecular Ecology·Warren BoothCoby Schal
May 9, 2015·Parasitology Research·Kamila WawrockaTomáš Bartonička
Jun 22, 2015·Parasitology Research·Giovanni Benelli
Sep 9, 2016·Journal of Parasitic Diseases : Official Organ of the Indian Society for Parasitology·Jafar Arjmand Yamchi, Mousa Tavassoli
Mar 27, 2009·Parasitology Research·Heinz MehlhornMartin Beer
Jun 16, 2011·Parasitology Research·Margit SemmlerHeinz Mehlhorn

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