Relative efficacy of organophosphorus insecticides against susceptible and resistant strains of the strike blowfly Lucilia cuprina (Calliphoridae) in New Zealand sheep

Authors: Wilson JA, Stringfellow L, Haack NA, Heath ACG, Clark AG
Publication: New Zealand Veterinary Journal, Volume 44, Issue 5, pp 185-187, Oct 1996
Publisher: Taylor and Francis

Animal type: Livestock, Production animal, Ruminant, Sheep
Subject Terms: Animal remedies/veterinary medicines, Inflammation, Integument/skin/wool/hair/fur/feather, Disease/defect, Treatment/therapy, Parasites - external, Pest/pesticides, Agricultural compounds, Nervous system/neurology, Toxicology, Poisoning - chemical
Article class: Scientific Article

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Abstract: Four groups of five Romney lambs were treated by plunge dipping with one of four registered organophosphorus flystrike preventatives. Untreated lambs acted as controls. The sheep were challenged at weekly intervals with larval implants of organophosphate-susceptible and -resistant strains of Lucilia cuprina. All four treatments provided 19-21 weeks protection against susceptible larvae but chlorfenvinphos provided the longest protection (16-17 weeks), followed by propetamphos (15-16 weeks), dichlofenthion (10-13 weeks) and diazinon (9-13 weeks), against the resistant strain.

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