Abstract
A flea larval bioassay was developed to monitor the susceptibility of fleas (Ctenocephalides fe/is) to imidacloprid (Advantage® Bayer HealthCare). The assay was validated using both laboratory and field isolates of C. felis. Flea eggs representing different field isolates of C. felis were collected by veterinarians in 21 states in the United States (US) and in the United Kingdom (UK) and Germany. A total of 972 flea isolates were obtained from during the 5-year study period. Of the 972 isolates received, 768 contained sufficient numbers of eggs to conduct the larval bioassay. Greater than 5% survival occurred for only 6 of the 768 field isolates that were evaluated. Further evaluation and analysis of these
isolates demonstrated that they were not significantly different in their susceptibility to imidacloprid from the reference strains field isolates used to develop the assay. Also, at this point there do not appear to be any differences in susceptibility to imidacloprid of cat flea field isolates from the US, the UK and
Germany. Collections of field flea isolates will continue in attempt to detect and document any change in the susceptibility of field flea populations to imidacloprid.
isolates demonstrated that they were not significantly different in their susceptibility to imidacloprid from the reference strains field isolates used to develop the assay. Also, at this point there do not appear to be any differences in susceptibility to imidacloprid of cat flea field isolates from the US, the UK and
Germany. Collections of field flea isolates will continue in attempt to detect and document any change in the susceptibility of field flea populations to imidacloprid.
Original language | English |
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Title of host publication | Proceedings of the 2006 Meeting of the American Association of Veterinary Parasitologists |
Publication status | Published - 2006 |
Event | 51st Annual Meeting of the American Association of Veterinary Parasitologistss - Sheraton Waikiki Hotel, Honolulu, United States Duration: 15 Jul 2006 → 18 Jul 2006 |
Conference
Conference | 51st Annual Meeting of the American Association of Veterinary Parasitologistss |
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Country/Territory | United States |
City | Honolulu |
Period | 15/07/06 → 18/07/06 |