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High prevalence of the F290L amitraz-resistance allele in varroa destructor populations from Portugal

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datacite.subject.fosCiências Naturais::Ciências da Terra e do Ambiente
datacite.subject.fosCiências Naturais::Ciências Biológicas
datacite.subject.sdg15:Proteger a Vida Terrestre
datacite.subject.sdg02:Erradicar a Fome
dc.contributor.authorCosta, Maíra
dc.contributor.authorSánchez, Sara
dc.contributor.authorLopes, Ana Rita
dc.contributor.authorYadró Garcia, Carlos A.
dc.contributor.authorPérez-Pérez, Antonio
dc.contributor.authorMartín-Hernández, Raquel
dc.contributor.authorHiges, Mariano
dc.contributor.authorPinto, M. Alice
dc.contributor.authorHenriques, Dora
dc.date.accessioned2026-02-12T11:40:41Z
dc.date.available2026-02-12T11:40:41Z
dc.date.issued2025
dc.description.abstractThe Western honey bee (Apis mellifera) has a crucial role in pollination and apicultural production but faces a major threat from the ectoparasitic mite Varroa destructor. This parasite causes varroosis and acts as a vector for multiple viruses, undermining colony health and survival. Chemical control relies mainly on two classes of synthetic acaricides: pyrethroids (fluvalinate and flumethrin) and formamidines (amitraz). However, the repeated and prolonged use of these compounds has promoted the development of resistance in V. destructor populations. Amitraz resistance has been associated with mutations in the Octopamine-like β-adrenergic receptor (Octβ2R), including N87S (France), Y215H (USA), F290L (Spain), and Y337F (Turkey). Until now, the distribution of these resistance alleles had not been investigated in Portugal. To address this gap, mites collected from different regions of the country were analysed through DNA extraction, PCR with specific primers, and Sanger sequencing. The results revealed an unexpectedly high frequency (98.3%) of the F290L allele, which has also been reported in Spanish populations, suggesting a strong potential selective pressure resulting from the prolonged use of amitraz. This atypically high frequency raises important questions regarding the origin and evolutionary trajectory of this resistance allele in Portugal. Therefore, a retrospective analysis of mite samples collected before the widespread adoption of amitraz is proposed. This approach will clarify whether the F290L allele was already present in ancestral V. destructor populations or whether its current prevalence arose from recent selective pressure. Integrating this data will be essential for understanding the evolutionary dynamics of resistance and for supporting the development of more effective monitoring and management strategies against this parasite.eng
dc.identifier.citationCosta, Maíra; Sánchez, Sara; Lopes, Ana Rita; Lopes, Ana; Yadró Garcia, Carlos A.; Pérez-Pérez, Antonio; Martín-Hernández, Raquel; Higes, Mariano; Pinto, M. Alice; Henriques, Dora (2025). High prevalence of the F290L amitraz-resistance allele in varroa destructor populations from Portugal, In XXI International Meeting of the Portuguese Association for Evolutionary Biology. Bragança: Instituto Politécnico de Bragança, p. 86. ISBN 978-972-745-368-9
dc.identifier.isbn978-972-745-368-9
dc.identifier.urihttp://hdl.handle.net/10198/35726
dc.language.isoeng
dc.peerreviewedyes
dc.relationAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.titleHigh prevalence of the F290L amitraz-resistance allele in varroa destructor populations from Portugaleng
dc.typeconference object
dspace.entity.typePublication
oaire.awardNumberLA/P/0007/2020
oaire.awardTitleAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0007%2F2020/PT
oaire.citation.conferencePlaceBragança, Portugal
oaire.citation.titleXXI International Meeting of the Portuguese Association for Evolutionary Biology
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameCosta
person.familyNameLopes
person.familyNameYadró Garcia
person.familyNamePinto
person.familyNameHenriques
person.givenNameMaíra
person.givenNameAna Rita
person.givenNameCarlos A.
person.givenNameM. Alice
person.givenNameDora
person.identifier.ciencia-idFB10-3DFA-D593
person.identifier.ciencia-idF014-6835-054D
person.identifier.ciencia-idF71F-B08E-EC39
person.identifier.ciencia-idF814-A1D0-8318
person.identifier.ciencia-id291F-986F-07DA
person.identifier.orcid0000-0001-6697-6581
person.identifier.orcid0000-0002-1888-2262
person.identifier.orcid0000-0002-6916-3647
person.identifier.orcid0000-0001-9663-8399
person.identifier.orcid0000-0001-7530-682X
person.identifier.scopus-author-id8085507800
person.identifier.scopus-author-id55761737300
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
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