Honey bee colony winter loss rates for 35 countries participating in the COLOSS survey for winter 2018–2019, and the effects of a new queen on the risk of colony winter loss.

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dc.contributor.authorGray, Alison
dc.contributor.authorAdjlane, Noureddine
dc.contributor.authorArab, Alireza
dc.contributor.authorBallis, Alexis
dc.contributor.authorBrusbardis, Valters
dc.contributor.authorCharriere, Jean-Daniel
dc.contributor.authorChlebo, Robert
dc.contributor.authorCoffey, Mary F.
dc.contributor.authorCornelissen, Bram
dc.contributor.authorCosta, Cristina Amaro da
dc.contributor.authorDahle, Bjorn
dc.contributor.authorDanihlik, Jiri
dc.contributor.authorDrazic, Marica Maja
dc.contributor.authorEvans, Garth
dc.contributor.authorFedoriak, Mariia
dc.contributor.authorForsythe, Ivan W.N.
dc.contributor.authorGajda, Anna
dc.contributor.authorGraaf, Dirk C. de
dc.contributor.authorGregorc, Ales
dc.contributor.authorIlieva, Iliyana
dc.contributor.authorJohannesen, Jes
dc.contributor.authorKauko, Lassi
dc.contributor.authorKristiansen, Preben
dc.contributor.authorMartikkala, Maritta
dc.contributor.authorMartin-Hernandez, Raquel
dc.contributor.authorMedina-Flores, Aurelio
dc.contributor.authorMutinelli, Franco
dc.contributor.authorPatalano, Solenn
dc.contributor.authorRaudmets, Aivar
dc.contributor.authorSan Martin, Gilles
dc.contributor.authorSoroker, Victoria
dc.contributor.authorStevanovic, Jevrosima
dc.contributor.authorUzunov, Aleksander
dc.contributor.authorVejsnaes, Flemming
dc.contributor.authorWilliams, Anthony
dc.contributor.authorZammit-Mangion, Marion
dc.contributor.authorBrodschneider, Robert
dc.date.accessioned2020-08-26T13:52:16Z
dc.date.available2020-08-26T13:52:16Z
dc.date.issued2020-08-11
dc.descriptionPublication history: Accepted - 14 July 2020; Published Online - 11 August 2020en_US
dc.description.abstractThis article presents managed honey bee colony loss rates over winter 2018/19 resulting from using the standardised COLOSS questionnaire in 35 countries (31 in Europe). In total, 28,629 beekeepers supplying valid loss data wintered 738,233 colonies, and reported 29,912 (4.1%, 95% confidence interval (CI) 4.0–4.1%) colonies with unsolvable queen problems, 79,146 (10.7%, 95% CI 10.5–10.9%) dead colonies after winter and 13,895 colonies (1.9%, 95% CI 1.8–2.0%) lost through natural disaster. This gave an overall colony winter loss rate of 16.7% (95% CI 16.4–16.9%), varying greatly between countries, from 5.8% to 32.0%. We modelled the risk of loss as a dead/empty colony or from unresolvable queen problems, and found that, overall, larger beekeeping operations with more than 150 colonies experienced significantly lower losses (p < 0.001), consistent with earlier studies. Additionally, beekeepers included in this survey who did not migrate their colonies at least once in 2018 had significantly lower losses than those migrating (p < 0.001). The percentage of new queens from 2018 in wintered colonies was also examined as a potential risk factor. The percentage of colonies going into winter with a new queen was estimated as 55.0% over all countries. Higher percentages of young queens corresponded to lower overall losses (excluding losses from natural disaster), but also lower losses from unresolvable queen problems, and lower losses from winter mortality (p < 0.001). Detailed results for each country and overall are given in a table, and a map shows relative risks of winter loss at regional level.en_US
dc.identifierhttp://hdl.handle.net/20.500.12518/170
dc.identifier.citationGray, A., Adjlane, N., Arab, A., Ballis, A., Brusbardis, V., Charrière, J.-D., Chlebo, R., Coffey, M. F., Cornelissen, B., Amaro da Costa, C., Dahle, B., Danihlík, J., Dražić, M. M., Evans, G., Fedoriak, M., Forsythe, I., Gajda, A., de Graaf, D. C., Gregorc, A., Ilieva, I., Johannesen, J., Kauko, L., Kristiansen, P., Martikkala, M., Martín-Hernández, R., Medina-Flores, C. A., Mutinelli, F., Patalano, S., Raudmets, A., Martin, G. S., Soroker, V., Stevanovic, J., Uzunov, A., Vejsnaes, F., Williams, A., Zammit-Mangion, M. and Brodschneider, R. (2020) ‘Honey bee colony winter loss rates for 35 countries participating in the COLOSS survey for winter 2018–2019, and the effects of a new queen on the risk of colony winter loss’, Journal of Apicultural Research. Informa UK Limited, pp. 1–8. doi: 10.1080/00218839.2020.1797272.en_US
dc.identifier.issn2078-6913
dc.identifier.urihttps://doi.org/10.1080/00218839.2020.1797272
dc.language.isoenen_US
dc.publisherTaylor & Francis, International Bee Research Associationen_US
dc.rights© 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.en_US
dc.subjectApis mellifera, mortality, colony winter losses, queens, queen replacement, monitoring surveys, beekeeping, citizen scienceen_US
dc.titleHoney bee colony winter loss rates for 35 countries participating in the COLOSS survey for winter 2018–2019, and the effects of a new queen on the risk of colony winter loss.en_US
dc.typeArticleen_US
dcterms.dateAccepted14 July 2020
dcterms.dateSubmitted2 June 2020

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