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Resistance of varroa destructor to pyrethroids: a preliminary analysis in Portugal

2024Conference object Open access
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dc.contributor.authorCosta, Maíra
dc.contributor.authorLopes, Ana
dc.contributor.authorYadró Garcia, Carlos A.
dc.contributor.authorCoelho, Marta
dc.contributor.authorMartín-Hernández, Raquel
dc.contributor.authorHiges, Mariano
dc.contributor.authorPires, Sancia
dc.contributor.authorPinto, M. Alice
dc.contributor.authorHenriques, Dora
dc.date.accessioned2024-10-04T09:00:06Z
dc.date.available2024-10-04T09:00:06Z
dc.date.issued2024
dc.description.abstractInfestations of Varroa destructor are closely associated with colony collapse in the honey bee (Apis mellifera). Currently, three classes of acaricidal compounds are utilized to combat these infestations: pyrethroids (fluvalinate and flumethrin), organophosphates (coumaphos) and formamidines (amitraz). The first cases of V. destructor resistance to pyrethroids were reported in Italy, followed by numerous instances of resistant populations worldwide. The molecular mechanism of V. destructor resistance to pyrethroids is well understood and primarily linked to an amino acid change at position 925, where a leucine (L) is typically found. At this position, three alleles have been described that confer resistance to pyrethroids, where leucine is substituted by valine (L925V), isoleucine (L925I), or methionine (L925M). A novel mutation at position 918 was described in a population from Spain, where the amino acid methionine, normally found at position 918, was replaced by leucine (M918L). In Portugal, gene variation associated with pyrethroid resistance remains unknown. To investigate this mechanism in V. destructor populations from Portuguese apiaries, DNA was extracted from individual mites. This DNA was PCR-amplified using the primers 273-IF_VD (5′-AAGCCGCCATTGTTACCAGA-3′) and 1973-IR_VD (5’- CTGTTGTTACCGTGGAGCA-3′) and subjected to Sanger sequencing. The expected outcome is that mutations are found in Portugal at both positions 925 and 918, due to its geographical proximity to Spain. These results will contribute to the Portuguese beekeeping sector by facilitating the development of strategies for handling V. destructor resistance.pt_PT
dc.description.sponsorshipProject “MITE- Varroa e vírus transmitidos: MonItorização de mutações e desenvolvimento de ferramentas moleculares inovadoras” is funded by National Beekeeping Programme 2023-2027.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCosta, Maíra; Lopes, Ana; Yadró Garcia, Carlos A.; Coelho, Marta; Martín-Hernández, Raquel; Higes, Mariano; Pires, Sancia; Pinto, M. Alice; Henriques, Dora (2024). Resistance of varroa destructor to pyrethroids: a preliminary analysis in Portugal. In 10th congress of Apidology. Tallinpt_PT
dc.identifier.urihttp://hdl.handle.net/10198/30319
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherEstonian University of Life Sciencespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectVarroa destructorpt_PT
dc.subjectPyrethroidspt_PT
dc.subjectVGSCpt_PT
dc.subjectVSGpt_PT
dc.subjectResearch Subject Categories::TECHNOLOGY::Chemical engineering::Food technologypt_PT
dc.titleResistance of varroa destructor to pyrethroids: a preliminary analysis in Portugalpt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceTallinpt_PT
oaire.citation.endPage86pt_PT
oaire.citation.startPage86pt_PT
oaire.citation.title10th Congress of Apidologypt_PT
person.familyNameCosta
person.familyNameLopes
person.familyNameYadró García
person.familyNamePires
person.familyNamePinto
person.familyNameHenriques
person.givenNameMaíra
person.givenNameAna
person.givenNameCarlos A.
person.givenNameSancia
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-idCC12-1B38-26C8
person.identifier.ciencia-idF814-A1D0-8318
person.identifier.ciencia-id291F-986F-07DA
person.identifier.orcid0000-0002-1888-2262
person.identifier.orcid0000-0002-6916-3647
person.identifier.orcid0000-0001-8427-0179
person.identifier.orcid0000-0001-9663-8399
person.identifier.orcid0000-0001-7530-682X
person.identifier.scopus-author-id53878422600
person.identifier.scopus-author-id8085507800
person.identifier.scopus-author-id55761737300
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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