Mehiläisten talvitappiot ja varroantorjunta Ruotsissa. Preben Kristiansen.
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Ruotsin mehiläishoidon neuvojan esitys Ruotsin varroatilanteesta ja talvitappioista Mehiläishoitajain Liiton Talvipäivillä 2015.
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Mehiläisten talvitappiot ja varroantorjunta Ruotsissa. Preben Kristiansen.
- 1. Jyväskylä, 2015 Preben Kristiansen Colony losses in Sweden Varroa control and weather conditions Finnish Beekeepers Winter Days Jyväskylä 2015 Preben Kristiansen
- 2. Jyväskylä, 2015 Preben Kristiansen Beekeepers Colonies 11% 6% 28% 33% 61% 61% 12 000 -14 000 beekeepers 120 000 -150 000 colonies 3 000 tons of honey Beekeeping in Sweden
- 3. Jyväskylä, 2015 Preben Kristiansen VarroazonerVarroa in Sweden Now Varroa in approx. 85 % of the colonies 1987 on Gotland 1991 in Malmö Zone 1 - Varroa Zone 2 Zone 3 It is not allowed to move bees from areas with varroa to areas where varroa has still not been detected
- 4. Jyväskylä, 2015 Preben Kristiansen Veterinary medicinal products Apistan Apiguard
- 5. Jyväskylä, 2015 Preben Kristiansen • Removal of drone brood • Trapping comb • Formic acid • Lactic acid • Oxalic acid • Nucs Organic acids and biotechnical methods
- 6. Jyväskylä, 2015 Preben Kristiansen May | June | July | August | September | October | Evaluation of infestation level Dronebrood removal FA short-term OA Control concept dronebrood removal + oxalic acid (and formic acid if needed)
- 7. Jyväskylä, 2015 Preben Kristiansen Varroa control methods P. Kristiansen, 2013 Source: SBR statistics Proportionofbeekeepers,%
- 8. Jyväskylä, 2015 Preben Kristiansen Varroa control concepts 2014 P. Kristiansen, 2015 Source: SBR statistics Proportionofbeekeepers,% N=4080
- 9. Jyväskylä, 2015 Preben Kristiansen Summerhoney Late summerhoney Bell heather honey Heather honey Forest honey Chestnut honey Natural content of formic acid in honeyFormicacidinhoney,mg/kg
- 10. Jyväskylä, 2015 Preben Kristiansen May | June | July | August | September | October | Dronebrood removal FA short-term OA Control concept dronebrood removal + oxalic acid (and formic acid if needed) But how about honey harvest here?
- 11. Jyväskylä, 2015 Preben Kristiansen Kristiansen, 2001 Formicacidinhoney mg/kg FA, short-term (n=10) Formic acid before heather-honey flow Formic acid in honey Control (n=10)
- 12. Jyväskylä, 2015 Preben Kristiansen Test with VARROX-vaporizer
- 13. Jyväskylä, 2015 Preben Kristiansen Apiary I (N=12) Apiary II (N=7) Apiary III (N=7) Kristiansen, 2002 Test with VARROX-vaporizer 2002
- 14. Jyväskylä, 2015 Preben Kristiansen Oxalic acid trickling Test 2014 Mites/100bees Before treatment After treatment
- 15. Jyväskylä, 2015 Preben Kristiansen 1992-2008 Registered as a chemical pesticide 2009-2011 Could be prescribed by a veterinarian with permission from the Medical Products Agency 2012 Registered as a veterinary medicinal product, no prescription needed Apistan in Sweden Analyses of wax samples from 1998 Test for fluvalinate resistance from 2000
- 16. Jyväskylä, 2015 Preben Kristiansen Fluvalinate in Swedish wax Kristiansen, 2011 Proportionofsampleswithtau-fluvalinate
- 17. Jyväskylä, 2015 Preben Kristiansen Apiary/ Colony Bees # Mite fall Remaining mites # ”Efficacy” % Mites/ 100 bees J24 ≈ 350 5 34 13 ≈11 J21 ≈ 400 8 42 16 ≈12 P34 ≈ 400 7 26 22 ≈ 8 V02 237 8 4 67 5,1 Tests for fluvalinate resistance
- 18. Jyväskylä, 2015 Preben Kristiansen Mite fall for estimation of infestation rate Reliable?
- 19. Jyväskylä, 2015 Preben Kristiansen Evaluation of infestation level with powdered sugar
- 20. Jyväskylä, 2015 Preben Kristiansen Mitefall versus powdered sugar Mite fall per day Mites/100beeswithpowderedsugar
- 21. Jyväskylä, 2015 Preben Kristiansen Colony losses in Sweden 1920–2014 P. Kristiansen, 2015 - Data from SBR Totalcolonylosses,% 13%
- 22. Jyväskylä, 2015 Preben Kristiansen Beekeepers Colonies Losses, % 2008-2009 565 7354 17,5 2009-2010 751 13598 24,7 2010-2011 572 11700 14,5 2011-2012 1445 22919 12,0 2012-2013 1737 26080 22,6 2013-2014 1604 20701 9,6 Colony losses in Sweden Survey on internet with the COLOSS-questionnaire
- 23. Jyväskylä, 2015 Preben Kristiansen Colony losses in Sweden 1925–2014 Totalcolonylosses,% P. Kristiansen, 2015 - Data from SBR
- 24. Jyväskylä, 2015 Preben Kristiansen • Varroa present or not • Control methods of varroa • Timing of treatment against varroa • Timing of wintering Colony losses important factors related to varroa
- 25. Jyväskylä, 2015 Preben Kristiansen Varroa - colony losses 2008-2009 2009-2010 Losses,% Losses,% Varroa n=6702 No varroa n=652 No varroa n=1714 Varroa n=11750
- 26. Jyväskylä, 2015 Preben Kristiansen Winter losses in Finland and Sweden Seppälä, Ruottinen &,Kristiansen. 2011
- 27. Jyväskylä, 2015 Preben Kristiansen Colony losses 1920-2012 Temperature winter Losses,% Cold winters n=32 Mild winters n=61
- 28. Jyväskylä, 2015 Preben Kristiansen Förluster,% Förluster,% Colony losses 1920-2012 Temperature summer and fall Cold summer n=35 Warm summer n=58 Cold fall n=44 Warm fall n=49 Losses,% Losses,%
- 29. Jyväskylä, 2015 Preben Kristiansen Neonicotinoids in oilseed rape colony losses ?
- 30. Jyväskylä, 2015 Preben Kristiansen Oilseed rape - colony lossesLosses,% Yes n=268 No n=705 Don’t know n=73
- 31. Jyväskylä, 2015 Preben Kristiansen Honey yield- colony losses Losses,% Lower n=657 Normal n=704 Higher n=187 Don’t know n=110 Honey yield 2012
- 32. Jyväskylä, 2015 Preben Kristiansen Queen problems - colony losses Losses,% More than normal n=274 Normal n=827 Less than normal n=128 Don’t know n=422 Queenproblems 2012
- 33. Jyväskylä, 2015 Preben Kristiansen Amount of winter feed and colony losses
- 34. Jyväskylä, 2015 Preben Kristiansen Survey 2012 Totallosses,% 15 kg or more (n=14049) Less than15 kg (n=2148) Survey 2003 Totallosses,% Less than 15 kg (n=5854) 15 kg or more (n=11843) Winter feed and colony losses
- 35. Jyväskylä, 2015 Preben Kristiansen Proportionofbeekeepers,% Average losses 2009-2010 and 2013-2014 583 beekeepers 21185 colonies Average losses, %
- 36. Jyväskylä, 2015 Preben Kristiansen Mites/100bees Mite infestation level 2012 och 2013
- 37. Jyväskylä, 2015 Preben Kristiansen Apiaries,% Virus prevalence 2012
- 38. Jyväskylä, 2015 Preben Kristiansen Pollen diversity
- 39. Jyväskylä, 2015 Preben Kristiansen CSI Pollen project
- 40. Jyväskylä, 2015 Preben Kristiansen Determination of colors
- 41. Jyväskylä, 2015 Preben Kristiansen CSI Pollen project Data from Sweden 2014 Numberofpollencolors
- 42. Jyväskylä, 2015 Preben Kristiansen Strong colonies Healthy winter bees Sufficient amount of food Prevention of colony losses
- 43. Jyväskylä, 2015 Preben Kristiansen Thanks for your attention! preben.kristiansen@biodlarna.se preben.kristiansen@apinordica.se