Surveillance of synthetic acaricide efficacy against Varroa destructor in Ontario, Canada
| Autor: | Nuria Morfin, Devan Rawn, Tatiana Petukhova, Paul Kozak, Les Eccles, Jim Chaput, Tim Pasma, Ernesto Guzman-Novoa |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | The Canadian Entomologist. 154 |
| ISSN: | 1918-3240 0008-347X |
| DOI: | 10.4039/tce.2022.4 |
| Popis: | The parasitic mite Varroa destructor (Mesostigmata: Varroidae) is the main culprit of honey bee (Hymenoptera: Apidae) colony mortality in Ontario, Canada. Most beekeepers use synthetic acaricides to control V. destructor infestations in their colonies, but the use of these products increases the risk of V. destructor developing resistance to the active ingredients, which is a growing concern. This study sought to determine the efficacy of three synthetic acaricides approved for use in Canada for control of V. destructor infestations, amitraz (Apivar™), tau-fluvalinate (Apistan®), and flumethrin (Bayvarol®), using the Pettis test. The mite mortality rate in populations of V. destructor differed for the acaricides tested. Amitraz caused a significantly higher mite mortality rate (92%) than flumethrin (78%) and tau-fluvalinate (72%) did. Amitraz was classified as “mostly effective” (90–97%), whereas flumethrin and tau-fluvalinate were classified as “minimally effective” (< 80%) for V. destructor control in the mite populations studied. Variation in mite mortality due to acaricide exposure was observed between apiaries and regions. The results highlight the importance of periodically assessing the varroacidal activity of acaricides to inform decisions to control the parasite when implementing integrated pest management strategies. |
| Databáze: | OpenAIRE |
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