Dewey M. Caron Univ Delaware Emeritus Affiliate Professor OSU Besides Location, Location, Location
Strong populous colonies (BUT can they be too strong?) Young vigorous queens (why survivor or selected (hygienic)stock?) Healthy brood (lack PMS) and virus-free adults Enough honey (how much is enough?) and bee bread stores (how much is needed?
Apis mellifera -- Not native to US Some regions (Oregon) with poor fall flow Environment has ups and downs (Indian summer – early/late fall slow spring) Bee mites, Bee Mites, BEE MITES Mite relationship not a good one
Honey bee colony health has declined since late 40’s Accelerated decline in 90’s w/ bee mite increases Mysterious syndromes Bee PMS–CCD since 2007 HB tracheal mite Varroa mite CCD
In the beginning
1869 – USA - IN, KY & TN 1891& May Disease (Stonebrood (Aspergillus) 1905 – 1919 Isle of Wight Disease Disappearing Disease Portland OR, 1917 – Autumn Collapse Disease NJ NY OH Canada 1963 – southern U.S. - Lou to Ca fall dwindling US states & Mexico Pesticide Deaths – Indemnification 11 yrs NE & PA Epidemic 2001 Bee PMS & 2007 CCD
2014 ~600,000 col ~7200 indiv Acceptable Colony Loss level
32.5% 31.7% 10.4% 73.4%
9.5% 27.2% 66%+ 64%
18.5% 25.6% 27.7% 19%
TOTAL SEASON US=45.2% - MA =58.7% (160 indiv) 22%
Data from Burgett 1998 Normal 10-15%
38% 18.1% 31.1% 2013 National 6300 indiv 30.6% - 22% total col 156 indiv 41.2% avg33.7% 19 indiv 19.7% Ave 22.2%
Losses and then big losses Avg 29.9%
Disease epidemic ◦ New or newly virulent pathogen ◦ Secondary pathogens Pesticides ◦ Neonics, chlorpyrifos, pyrethroids ◦ Miticides ◦ Syngergism (fungicide +) Environmental stressors ◦ Bee nutrition inadequate – monoculture ag ◦ Climate change Other – GMO’s, ET’s, Cell phones, sunspots Current outlook 1/4 th CCD/B PMS 1/4 th mites 1/4 th Nosema 1/4 th management
2012 National approximately 45% (99.5% backyarders) had NO LOSS 2013 PNW 33% small-scale beekeepers had NO LOSS
Beekeepers talk to Beekeepers
Fall “issues” Disappearing bees in fall “Snot” brood Deadouts in fall ‘pick-up rate’ Wintering issues Feeding issues
Treatment Control Options Treatment Options Treat Don’t Treat Hard Chemical IPM Soft Chemical or Organic Cultural or Mechanical + sanitation site Ventilation Drone trap Brood interupt + Oxalic + hopguard Apivar
IPM toolbox
Survivorship selection Opportunity
Cultural options Small Cell size
Physical-Mechanical Drone brood removal
Treating with Chemical controls
Use of specific products Dumb Chemicals for smart beekeepers
Effective tool specially designed for Varroa Mite management in bee colonies Controlled-release strips formulated with 3.3% Amitraz (0.5g active per 15g strip) Smart Chemicals for d____ beekeepers
Passive – screen bottom board; apiary site; hygienic stock, natural comb Minimal -- Miticide Apivar – [>honey removal] Aggressive Spring treatment – Essential oils (Apiguard ApiLife Var); Formic acid (Mags); Drone removal Summer (after honey removal) – requeen (brood interruption); Apivar miticide Late fall (clean adults when no brood) -- Oxalic Hopguard OTHER – sanitation (comb rotation), small cell, Mite zapper, feeding (nutrition) supplements, powdered sugar, drying materials, acetic acid, mineral oil
Alternative material used Honey-B-Healthy
Bees know best – they don’t need our care
Doesn’t mean chemical free (life is all about chemicals) Doesn’t mean let alone beekeeping (it is difficult work to achieve!) Doesn’t mean failure to manage (i.e the old system of being a ‘BEE-HAVER or BEE HOSTER) Doesn’t mean ‘survivor stock’ Doesn’t mean giving up !!!
Less expensive (fewer or no inputs) Ecologically-sound Less chance for non-target harm Reduce beeswax contamination Stewardship-friendly Kinder-gentler bee colony care More natural !
The bee hive? The apiary? The management? The Bee
Supporting treatment-free? What is wrong here – Hive? Apiary? Bee? Management?