Comparative in vitro evaluation of contact activity of fluralaner, spinosad, phoxim, propoxur, permethrin and deltamethrin against the northern fowl mite, Ornithonyssus sylviarum
| Autor: | Amy C. Murillo, Hartmut Zoller, Faris Jirjis, Anja Regina Heckeroth, Bradley A. Mullens, Annie Flochlay-Sigognault |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Veterinary medicine Fluralaner Drug Resistance Spinosad Mycology & Parasitology 01 natural sciences Poultry Toxicology chemistry.chemical_compound 0302 clinical medicine Pyrethrins Acaricides Mites biology Ornithonyssus sylviarum Europe Drug Combinations Infectious Diseases Medical Microbiology Public Health and Health Services Macrolides medicine.drug Mite Infestations 030231 tropical medicine Propoxur lcsh:Infectious and parasitic diseases 03 medical and health sciences Phoxim Tropical Medicine Nitriles parasitic diseases Control Mite medicine Animals lcsh:RC109-216 Poultry Diseases Permethrin Acaricide Research Organothiophosphorus Compounds biology.organism_classification 010602 entomology Deltamethrin Good Health and Well Being chemistry Parasitology Chickens |
| Zdroj: | Parasites & Vectors, Vol 10, Iss 1, Pp 1-7 (2017) Parasites & vectors, vol 10, iss 1 Parasites & Vectors |
| ISSN: | 1756-3305 |
| DOI: | 10.1186/s13071-017-2289-z |
| Popis: | Background Northern fowl mites (Ornithonyssus sylviarum) are obligate hematophagous ectoparasites of both feral birds and poultry, particularly chicken layers and breeders. They complete their entire life-cycle on infested birds while feeding on blood. Infestations of O. sylviarum are difficult to control and resistance to some chemical classes of acaricides is a growing concern. The contact susceptibility of O. sylviarum to a new active ingredient, fluralaner, was evaluated, as well as other compounds representative of the main chemical classes commonly used to control poultry mite infestations in Europe and the USA. Methods Six acaricides (fluralaner, spinosad, phoxim, propoxur, permethrin, deltamethrin) were dissolved and serially diluted in butanol:olive oil (1:1) to obtain test solutions used for impregnation of filter paper packets. A carrier-only control was included. Thirty adult northern fowl mites, freshly collected from untreated host chickens, were inserted into each packet for continuous compound exposure. Mite mortality was assessed after incubation of the test packets for 48 h at 75% relative humidity and a temperature of 22 °C. Results Adult mite LC50 /LC99 values were 2.95/8.09 ppm for fluralaner, 1587/3123 ppm for spinosad, 420/750 ppm for phoxim and 86/181 ppm for propoxur. Permethrin and deltamethrin LC values could not be calculated due to lack of mortality observed even at 1000 ppm. Conclusions Northern fowl mites were highly sensitive to fluralaner after contact exposure. They were moderately sensitive to phoxim and propoxur, and less sensitive to spinosad. Furthermore, the tested mite population appeared to be resistant to the pyrethroids, permethrin and deltamethrin, despite not being exposed to acaricides for at least 10 years. Electronic supplementary material The online version of this article (doi:10.1186/s13071-017-2289-z) contains supplementary material, which is available to authorized users. |
| Databáze: | OpenAIRE |
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