RT info:eu-repo/semantics/article T1 Residual tau-fluvalinate in honey bee colonies is coupled with evidence for selection for Varroa destructor resistance to pyrethroids A1 Benito Murcia, María A1 Bartolomé, Carolina A1 Maside, Xulio A1 Bernal del Nozal, José A1 Bernal Yagüe, José Luis A1 Nozal Nalda, María Jesús del A1 Meana, Aránzazu A1 Botías, Cristina A1 Martín Hernández, Raquel A1 Higes Pascual, Mariano K1 Entomology K1 Abejas - Parásitos K1 Abejas - Enfermedades K1 Acaros K1 Quimica Analítica K1 2413.01 Entomología General AB Varroa destructor is one of the most prevalent honey bee (Apis mellifera) pathogens worldwide. Nowadays, the main method to control this parasite involves the application of different acaricidal treatments, among which the pyrethroid tau-fluvalinate is one of the most widely used. However, the intensive and repetitive application of these chemicals generates a selective pressure that, when maintained over time, contributes to the emergence of resistant mites in the honey bee colonies. Here we analysed the presence of residual tau-fluvalinate and the patterns of genetic resistance to this acaricide in Varroa mites collected from tau-fluvalinate untreated honey bee colonies. Our results show the widespread and persistent pyrethroid contamination of beeswax and beebread in the hives, along with an excess of pyrethroid-resistant genotypes and an overall increase in the frequency of the pyrethroid-resistant allele in the mite population over time. Persistent contamination of the hives likely compromises the efficacy of tau-fluvalinate treatments and, therefore, may have serious long-term consequences for the control of varroosis. PB MDPI SN 2075-4450 YR 2021 FD 2021 LK https://uvadoc.uva.es/handle/10324/59583 UL https://uvadoc.uva.es/handle/10324/59583 LA eng NO Insects, 2021, Vol. 12, Nº. 8, 731 NO Producción Científica DS UVaDOC RD 22-nov-2024