TY  - JOUR
AU  - Gray, Alison
AU  - Adjlane, Noureddine
AU  - Arab, Alireza
AU  - Ballis, Alexis
AU  - Brusbardis, Valters
AU  - Bugeja Douglas, Adrian
AU  - Cadahía, Luis
AU  - Charrière, Jean-Daniel
AU  - Chlebo, Robert
AU  - Coffey, Mary F.
AU  - Cornelissen, Bram
AU  - Costa, Cristina Amaro da
AU  - Danneels, Ellen
AU  - Danihlík, Jiří
AU  - Dobrescu, Constantin
AU  - Evans, Garth
AU  - Fedoriak, Mariia
AU  - Forsythe, Ivan
AU  - Gregorc, Aleš
AU  - Ilieva Arakelyan, Iliyana
AU  - Johannesen, Jes
AU  - Kauko, Lassi
AU  - Kristiansen, Preben
AU  - Martikkala, Maritta
AU  - Martín-Hernández, Raquel
AU  - Mazur, Ewa
AU  - Medina-Flores, Carlos Aurelio
AU  - Mutinelli, Franco
AU  - Omar, Eslam M.
AU  - Patalano, Solenn
AU  - Raudmets, Aivar
AU  - San Martin, Gilles
AU  - Soroker, Victoria
AU  - Stahlmann-Brown, Philip
AU  - Stevanović, Jevrosima
AU  - Uzunov, Aleksandar
AU  - Vejsnaes, Flemming
AU  - Williams, Anthony
AU  - Brodschneider, Robert
PY  - 2023
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2504
AB  - This article presents managed honey bee colony loss rates over winter 2019/20 resulting from using the standardised COLOSS questionnaire in 37 countries. Six countries were from outside Europe, including, for the first time in this series of articles, New Zealand. The 30,491 beekeepers outside New Zealand reported 4.5% of colonies with unsolvable queen problems, 11.1% of colonies dead after winter and 2.6% lost through natural disaster. This gave an overall colony winter loss rate of 18.1%, higher than in the previous year. The winter loss rates varied greatly between countries, from 7.4% to 36.5%. 3216 beekeepers from New Zealand managing 297,345 colonies reported 10.5% losses for their 2019 winter (six months earlier than for other, Northern Hemisphere, countries). We modelled the risk of loss as a dead/empty colony or from unresolvable queen problems, for all countries except New Zealand. Overall, larger beekeeping operations with more than 50 colonies experienced significantly lower losses (p < 0.001). Migration was also highly significant (p < 0.001), with lower loss rates for operations migrating their colonies in the previous season. A higher proportion of new queens reduced the risk of colony winter loss (p < 0.001), suggesting that more queen replacement is better. All three factors, operation size, migration and proportion of young queens, were also included in a multivariable main effects quasi-binomial GLM and all three remained highly significant (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 the regional level.
T2  - Journal of Apicultural Research
T1  - Honey bee colony loss rates in 37 countries using the COLOSS survey for winter 2019–2020: the combined effects of operation size, migration and queen replacement
VL  - 62
IS  - 2
SP  - 204
EP  - 210
DO  - 10.1080/00218839.2022.2113329
ER  - 

@article{
author = "Gray, Alison and Adjlane, Noureddine and Arab, Alireza and Ballis, Alexis and Brusbardis, Valters and Bugeja Douglas, Adrian and Cadahía, Luis and Charrière, Jean-Daniel and Chlebo, Robert and Coffey, Mary F. and Cornelissen, Bram and Costa, Cristina Amaro da and Danneels, Ellen and Danihlík, Jiří and Dobrescu, Constantin and Evans, Garth and Fedoriak, Mariia and Forsythe, Ivan and Gregorc, Aleš and Ilieva Arakelyan, Iliyana and Johannesen, Jes and Kauko, Lassi and Kristiansen, Preben and Martikkala, Maritta and Martín-Hernández, Raquel and Mazur, Ewa and Medina-Flores, Carlos Aurelio and Mutinelli, Franco and Omar, Eslam M. and Patalano, Solenn and Raudmets, Aivar and San Martin, Gilles and Soroker, Victoria and Stahlmann-Brown, Philip and Stevanović, Jevrosima and Uzunov, Aleksandar and Vejsnaes, Flemming and Williams, Anthony and Brodschneider, Robert",
year = "2023",
abstract = "This article presents managed honey bee colony loss rates over winter 2019/20 resulting from using the standardised COLOSS questionnaire in 37 countries. Six countries were from outside Europe, including, for the first time in this series of articles, New Zealand. The 30,491 beekeepers outside New Zealand reported 4.5% of colonies with unsolvable queen problems, 11.1% of colonies dead after winter and 2.6% lost through natural disaster. This gave an overall colony winter loss rate of 18.1%, higher than in the previous year. The winter loss rates varied greatly between countries, from 7.4% to 36.5%. 3216 beekeepers from New Zealand managing 297,345 colonies reported 10.5% losses for their 2019 winter (six months earlier than for other, Northern Hemisphere, countries). We modelled the risk of loss as a dead/empty colony or from unresolvable queen problems, for all countries except New Zealand. Overall, larger beekeeping operations with more than 50 colonies experienced significantly lower losses (p < 0.001). Migration was also highly significant (p < 0.001), with lower loss rates for operations migrating their colonies in the previous season. A higher proportion of new queens reduced the risk of colony winter loss (p < 0.001), suggesting that more queen replacement is better. All three factors, operation size, migration and proportion of young queens, were also included in a multivariable main effects quasi-binomial GLM and all three remained highly significant (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 the regional level.",
journal = "Journal of Apicultural Research",
title = "Honey bee colony loss rates in 37 countries using the COLOSS survey for winter 2019–2020: the combined effects of operation size, migration and queen replacement",
volume = "62",
number = "2",
pages = "204-210",
doi = "10.1080/00218839.2022.2113329"
}

Gray, A., Adjlane, N., Arab, A., Ballis, A., Brusbardis, V., Bugeja Douglas, A., Cadahía, L., Charrière, J., Chlebo, R., Coffey, M. F., Cornelissen, B., Costa, C. A. d., Danneels, E., Danihlík, J., Dobrescu, C., Evans, G., Fedoriak, M., Forsythe, I., Gregorc, A., Ilieva Arakelyan, I., Johannesen, J., Kauko, L., Kristiansen, P., Martikkala, M., Martín-Hernández, R., Mazur, E., Medina-Flores, C. A., Mutinelli, F., Omar, E. M., Patalano, S., Raudmets, A., San Martin, G., Soroker, V., Stahlmann-Brown, P., Stevanović, J., Uzunov, A., Vejsnaes, F., Williams, A.,& Brodschneider, R.. (2023). Honey bee colony loss rates in 37 countries using the COLOSS survey for winter 2019–2020: the combined effects of operation size, migration and queen replacement. in Journal of Apicultural Research, 62(2), 204-210.
https://doi.org/10.1080/00218839.2022.2113329

Gray A, Adjlane N, Arab A, Ballis A, Brusbardis V, Bugeja Douglas A, Cadahía L, Charrière J, Chlebo R, Coffey MF, Cornelissen B, Costa CAD, Danneels E, Danihlík J, Dobrescu C, Evans G, Fedoriak M, Forsythe I, Gregorc A, Ilieva Arakelyan I, Johannesen J, Kauko L, Kristiansen P, Martikkala M, Martín-Hernández R, Mazur E, Medina-Flores CA, Mutinelli F, Omar EM, Patalano S, Raudmets A, San Martin G, Soroker V, Stahlmann-Brown P, Stevanović J, Uzunov A, Vejsnaes F, Williams A, Brodschneider R. Honey bee colony loss rates in 37 countries using the COLOSS survey for winter 2019–2020: the combined effects of operation size, migration and queen replacement. in Journal of Apicultural Research. 2023;62(2):204-210.
doi:10.1080/00218839.2022.2113329 .

Gray, Alison, Adjlane, Noureddine, Arab, Alireza, Ballis, Alexis, Brusbardis, Valters, Bugeja Douglas, Adrian, Cadahía, Luis, Charrière, Jean-Daniel, Chlebo, Robert, Coffey, Mary F., Cornelissen, Bram, Costa, Cristina Amaro da, Danneels, Ellen, Danihlík, Jiří, Dobrescu, Constantin, Evans, Garth, Fedoriak, Mariia, Forsythe, Ivan, Gregorc, Aleš, Ilieva Arakelyan, Iliyana, Johannesen, Jes, Kauko, Lassi, Kristiansen, Preben, Martikkala, Maritta, Martín-Hernández, Raquel, Mazur, Ewa, Medina-Flores, Carlos Aurelio, Mutinelli, Franco, Omar, Eslam M., Patalano, Solenn, Raudmets, Aivar, San Martin, Gilles, Soroker, Victoria, Stahlmann-Brown, Philip, Stevanović, Jevrosima, Uzunov, Aleksandar, Vejsnaes, Flemming, Williams, Anthony, Brodschneider, Robert, "Honey bee colony loss rates in 37 countries using the COLOSS survey for winter 2019–2020: the combined effects of operation size, migration and queen replacement" in Journal of Apicultural Research, 62, no. 2 (2023):204-210,
https://doi.org/10.1080/00218839.2022.2113329 . .