Loss rates of honey bee colonies during winter 2017/18 in 36 countries participating in the COLOSS survey, including effects of forage sources

Alison Gray, Robert Brodschneider, Noureddine Adjlane, Alexis Ballis, Valters Brusbardis, Jean-Daniel Charrière, Robert Chlebo, Mary F. Coffey, Bram Cornelissen, Cristina Amaro da Costa, Tamás Csáki, Bjørn Dahle, Jiří Danihlík, Marica Maja Dražić, Garth Evans, Mariia Fedoriak, Ivan Forsythe, Dirk de Graaf, Aleš Gregorc, Jes Johannesen & 18 others Lassi Kauko, Preben Kristiansen, Maritta Martikkala, Raquel Martín-Hernández, Carlos A. Medina-Flores, Franco Mutinelli, Solenn Patalano, Plamen Petrov, Aivar Raudmets, Vladimir A. Ryzhikov, Noa Simon-Delso, Jevrosima Stevanovic, Grazyna Topolska, Aleksandar Uzunov, Flemming Vejsnaes, Anthony Williams, Marion Zammit-Mangion, Victoria Soroker

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This short article presents loss rates of honey bee colonies over winter 2017/18 from 36 countries, including 33 in Europe, from data collected using the standardized COLOSS questionnaire. The 25,363 beekeepers supplying data passing consistency checks in total wintered 544,879 colonies, and reported 26,379 (4.8%, 95% CI 4.7–5.0%) colonies with unsolvable queen problems, 54,525 (10.0%, 95% CI 9.8–10.2%) dead colonies after winter and another 8,220 colonies (1.5%, 95% CI 1.4–1.6%) lost through natural disaster. This gave an overall loss rate of 16.4% (95% CI 16.1–16.6%) of honey bee colonies during winter 2017/18, but this varied greatly from 2.0 to 32.8% between countries. The included map shows relative risks of winter loss at regional level. The analysis using the total data-set confirmed findings from earlier surveys that smaller beekeeping operations with at most 50 colonies suffer significantly higher losses than larger operations (p <.001). Beekeepers migrating their colonies had significantly lower losses than those not migrating (p <.001), a different finding from previous research. Evaluation of six different forage sources as potential risk factors for colony loss indicated that intensive foraging on any of five of these plant sources (Orchards, Oilseed Rape, Maize, Heather and Autumn Forage Crops) was associated with significantly higher winter losses. This finding requires further study and explanation. A table is included giving detailed results of loss rates and the impact of the tested forage sources for each country and overall.

LanguageEnglish
Pages479-485
Number of pages7
JournalJournal of Apicultural Research
Volume58
Issue number4
Early online date30 May 2019
DOIs
Publication statusPublished - 8 Aug 2019

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honey bee colonies
forage
winter
beekeepers
apiculture
forage crops
disasters
relative risk
queen insects
Brassica napus
orchards
risk factors
questionnaires
Relative Risk
foraging
Maize
Foraging
autumn
Risk Factors
Disaster

Keywords

  • apis mellifera
  • citizen science
  • survey
  • beekeeping
  • monitoring
  • colony winter losses
  • forage sources
  • mortality

Cite this

Gray, Alison ; Brodschneider, Robert ; Adjlane, Noureddine ; Ballis, Alexis ; Brusbardis, Valters ; Charrière, Jean-Daniel ; Chlebo, Robert ; Coffey, Mary F. ; Cornelissen, Bram ; da Costa, Cristina Amaro ; Csáki, Tamás ; Dahle, Bjørn ; Danihlík, Jiří ; Dražić, Marica Maja ; Evans, Garth ; Fedoriak, Mariia ; Forsythe, Ivan ; de Graaf, Dirk ; Gregorc, Aleš ; Johannesen, Jes ; Kauko, Lassi ; Kristiansen, Preben ; Martikkala, Maritta ; Martín-Hernández, Raquel ; Medina-Flores, Carlos A. ; Mutinelli, Franco ; Patalano, Solenn ; Petrov, Plamen ; Raudmets, Aivar ; Ryzhikov, Vladimir A. ; Simon-Delso, Noa ; Stevanovic, Jevrosima ; Topolska, Grazyna ; Uzunov, Aleksandar ; Vejsnaes, Flemming ; Williams, Anthony ; Zammit-Mangion, Marion ; Soroker, Victoria. / Loss rates of honey bee colonies during winter 2017/18 in 36 countries participating in the COLOSS survey, including effects of forage sources. In: Journal of Apicultural Research. 2019 ; Vol. 58, No. 4. pp. 479-485.
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abstract = "This short article presents loss rates of honey bee colonies over winter 2017/18 from 36 countries, including 33 in Europe, from data collected using the standardized COLOSS questionnaire. The 25,363 beekeepers supplying data passing consistency checks in total wintered 544,879 colonies, and reported 26,379 (4.8{\%}, 95{\%} CI 4.7–5.0{\%}) colonies with unsolvable queen problems, 54,525 (10.0{\%}, 95{\%} CI 9.8–10.2{\%}) dead colonies after winter and another 8,220 colonies (1.5{\%}, 95{\%} CI 1.4–1.6{\%}) lost through natural disaster. This gave an overall loss rate of 16.4{\%} (95{\%} CI 16.1–16.6{\%}) of honey bee colonies during winter 2017/18, but this varied greatly from 2.0 to 32.8{\%} between countries. The included map shows relative risks of winter loss at regional level. The analysis using the total data-set confirmed findings from earlier surveys that smaller beekeeping operations with at most 50 colonies suffer significantly higher losses than larger operations (p <.001). Beekeepers migrating their colonies had significantly lower losses than those not migrating (p <.001), a different finding from previous research. Evaluation of six different forage sources as potential risk factors for colony loss indicated that intensive foraging on any of five of these plant sources (Orchards, Oilseed Rape, Maize, Heather and Autumn Forage Crops) was associated with significantly higher winter losses. This finding requires further study and explanation. A table is included giving detailed results of loss rates and the impact of the tested forage sources for each country and overall.",
keywords = "apis mellifera, citizen science, survey, beekeeping, monitoring, colony winter losses, forage sources, mortality",
author = "Alison Gray and Robert Brodschneider and Noureddine Adjlane and Alexis Ballis and Valters Brusbardis and Jean-Daniel Charri{\`e}re and Robert Chlebo and Coffey, {Mary F.} and Bram Cornelissen and {da Costa}, {Cristina Amaro} and Tam{\'a}s Cs{\'a}ki and Bj{\o}rn Dahle and Jiř{\'i} Danihl{\'i}k and Dražić, {Marica Maja} and Garth Evans and Mariia Fedoriak and Ivan Forsythe and {de Graaf}, Dirk and Aleš Gregorc and Jes Johannesen and Lassi Kauko and Preben Kristiansen and Maritta Martikkala and Raquel Mart{\'i}n-Hern{\'a}ndez and Medina-Flores, {Carlos A.} and Franco Mutinelli and Solenn Patalano and Plamen Petrov and Aivar Raudmets and Ryzhikov, {Vladimir A.} and Noa Simon-Delso and Jevrosima Stevanovic and Grazyna Topolska and Aleksandar Uzunov and Flemming Vejsnaes and Anthony Williams and Marion Zammit-Mangion and Victoria Soroker",
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Gray, A, Brodschneider, R, Adjlane, N, Ballis, A, Brusbardis, V, Charrière, J-D, Chlebo, R, Coffey, MF, Cornelissen, B, da Costa, CA, Csáki, T, Dahle, B, Danihlík, J, Dražić, MM, Evans, G, Fedoriak, M, Forsythe, I, de Graaf, D, Gregorc, A, Johannesen, J, Kauko, L, Kristiansen, P, Martikkala, M, Martín-Hernández, R, Medina-Flores, CA, Mutinelli, F, Patalano, S, Petrov, P, Raudmets, A, Ryzhikov, VA, Simon-Delso, N, Stevanovic, J, Topolska, G, Uzunov, A, Vejsnaes, F, Williams, A, Zammit-Mangion, M & Soroker, V 2019, 'Loss rates of honey bee colonies during winter 2017/18 in 36 countries participating in the COLOSS survey, including effects of forage sources' Journal of Apicultural Research, vol. 58, no. 4, pp. 479-485. https://doi.org/10.1080/00218839.2019.1615661

Loss rates of honey bee colonies during winter 2017/18 in 36 countries participating in the COLOSS survey, including effects of forage sources. / Gray, Alison; Brodschneider, Robert; Adjlane, Noureddine; Ballis, Alexis ; Brusbardis, Valters; Charrière, Jean-Daniel; Chlebo, Robert; Coffey, Mary F.; Cornelissen, Bram; da Costa, Cristina Amaro; Csáki, Tamás; Dahle, Bjørn; Danihlík, Jiří; Dražić, Marica Maja; Evans, Garth; Fedoriak, Mariia; Forsythe, Ivan; de Graaf, Dirk; Gregorc, Aleš; Johannesen, Jes; Kauko, Lassi; Kristiansen, Preben; Martikkala, Maritta; Martín-Hernández, Raquel; Medina-Flores, Carlos A.; Mutinelli, Franco; Patalano, Solenn; Petrov, Plamen; Raudmets, Aivar; Ryzhikov, Vladimir A.; Simon-Delso, Noa; Stevanovic, Jevrosima; Topolska, Grazyna; Uzunov, Aleksandar; Vejsnaes, Flemming; Williams, Anthony; Zammit-Mangion, Marion; Soroker, Victoria.

In: Journal of Apicultural Research, Vol. 58, No. 4, 08.08.2019, p. 479-485.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Loss rates of honey bee colonies during winter 2017/18 in 36 countries participating in the COLOSS survey, including effects of forage sources

AU - Gray, Alison

AU - Brodschneider, Robert

AU - Adjlane, Noureddine

AU - Ballis, Alexis

AU - Brusbardis, Valters

AU - Charrière, Jean-Daniel

AU - Chlebo, Robert

AU - Coffey, Mary F.

AU - Cornelissen, Bram

AU - da Costa, Cristina Amaro

AU - Csáki, Tamás

AU - Dahle, Bjørn

AU - Danihlík, Jiří

AU - Dražić, Marica Maja

AU - Evans, Garth

AU - Fedoriak, Mariia

AU - Forsythe, Ivan

AU - de Graaf, Dirk

AU - Gregorc, Aleš

AU - Johannesen, Jes

AU - Kauko, Lassi

AU - Kristiansen, Preben

AU - Martikkala, Maritta

AU - Martín-Hernández, Raquel

AU - Medina-Flores, Carlos A.

AU - Mutinelli, Franco

AU - Patalano, Solenn

AU - Petrov, Plamen

AU - Raudmets, Aivar

AU - Ryzhikov, Vladimir A.

AU - Simon-Delso, Noa

AU - Stevanovic, Jevrosima

AU - Topolska, Grazyna

AU - Uzunov, Aleksandar

AU - Vejsnaes, Flemming

AU - Williams, Anthony

AU - Zammit-Mangion, Marion

AU - Soroker, Victoria

PY - 2019/8/8

Y1 - 2019/8/8

N2 - This short article presents loss rates of honey bee colonies over winter 2017/18 from 36 countries, including 33 in Europe, from data collected using the standardized COLOSS questionnaire. The 25,363 beekeepers supplying data passing consistency checks in total wintered 544,879 colonies, and reported 26,379 (4.8%, 95% CI 4.7–5.0%) colonies with unsolvable queen problems, 54,525 (10.0%, 95% CI 9.8–10.2%) dead colonies after winter and another 8,220 colonies (1.5%, 95% CI 1.4–1.6%) lost through natural disaster. This gave an overall loss rate of 16.4% (95% CI 16.1–16.6%) of honey bee colonies during winter 2017/18, but this varied greatly from 2.0 to 32.8% between countries. The included map shows relative risks of winter loss at regional level. The analysis using the total data-set confirmed findings from earlier surveys that smaller beekeeping operations with at most 50 colonies suffer significantly higher losses than larger operations (p <.001). Beekeepers migrating their colonies had significantly lower losses than those not migrating (p <.001), a different finding from previous research. Evaluation of six different forage sources as potential risk factors for colony loss indicated that intensive foraging on any of five of these plant sources (Orchards, Oilseed Rape, Maize, Heather and Autumn Forage Crops) was associated with significantly higher winter losses. This finding requires further study and explanation. A table is included giving detailed results of loss rates and the impact of the tested forage sources for each country and overall.

AB - This short article presents loss rates of honey bee colonies over winter 2017/18 from 36 countries, including 33 in Europe, from data collected using the standardized COLOSS questionnaire. The 25,363 beekeepers supplying data passing consistency checks in total wintered 544,879 colonies, and reported 26,379 (4.8%, 95% CI 4.7–5.0%) colonies with unsolvable queen problems, 54,525 (10.0%, 95% CI 9.8–10.2%) dead colonies after winter and another 8,220 colonies (1.5%, 95% CI 1.4–1.6%) lost through natural disaster. This gave an overall loss rate of 16.4% (95% CI 16.1–16.6%) of honey bee colonies during winter 2017/18, but this varied greatly from 2.0 to 32.8% between countries. The included map shows relative risks of winter loss at regional level. The analysis using the total data-set confirmed findings from earlier surveys that smaller beekeeping operations with at most 50 colonies suffer significantly higher losses than larger operations (p <.001). Beekeepers migrating their colonies had significantly lower losses than those not migrating (p <.001), a different finding from previous research. Evaluation of six different forage sources as potential risk factors for colony loss indicated that intensive foraging on any of five of these plant sources (Orchards, Oilseed Rape, Maize, Heather and Autumn Forage Crops) was associated with significantly higher winter losses. This finding requires further study and explanation. A table is included giving detailed results of loss rates and the impact of the tested forage sources for each country and overall.

KW - apis mellifera

KW - citizen science

KW - survey

KW - beekeeping

KW - monitoring

KW - colony winter losses

KW - forage sources

KW - mortality

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