dennis vanengelsdorp university of maryland [email protected] the bee informed...
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Dennis vanEngelsdorpUniversity of [email protected]
The Bee Informed Partnership:Data driven practices to improve bee health
2006-2007 2007-2008 2008-2009 2009-2010 2010-2011 2011-2012 2012-2013 2013-20140%
5%
10%
15%
20%
25%
30%
35%
40%
Managed Honey Bee Losses in the US
Acceptable lossTotal loss
Perc
ent
Tota
l Col
ony
Win
ter
Loss
Loss rates differ between Operation types
Results2013-2014 Management Survey
5967 valid US respondents (465,599 colonies)
Mean # col (Oct1st)
5709 backyard bk. (≤50 col) 5.9
161 sideline bk. (50 col ≤500) 145.8
97 commercial bk. (>500 col) 4211
Management Questions8 domains / 81 practices
ResultsCorrelation (Pearson): Winter Loss ~ Grand Score By Region
N= 3928
N =1 930
N=109
Grand Score
Win
ter L
oss
(%)
Beekeepers (50+) colonies
0 1 2 3 4 5 60
5
10
15
20
25
30
35
40
Loss by # of treatments
12%
26%
29%
17%
> 50 colonies operated in any climatic regions
Monthly Varroa Loads
1 2 3 4 5 6 7 8 9 10 11 120
2
4
6
8
10
12
2010 2011 2012 2013 2014
Month
Mite
s pe
r 100
bee
s
C ENC MS NE NW S SE SW W WNC
ResultsCorrelation (Pearson): Winter Loss
N=5709
N= 161
N = 97
Grand Score
Beekeeper
Equipment
Queen & New Col.
Seasonal
Feeding
Monitoring
Varroa Control
Non VarroaControl
Win
ter L
oss
(%)
Remote Tech Teams
Tech Team monitoringReturn on Investment
Assume long term benefit is a 20% (6pt) reduction in loss (from 30% - 24%)
$80Invested/ year*50% beekeepers*50% partners
An operation of 2,500 colonies Hives saved per year = 150 colonies
Value = $200
Emergency Response KitsQueen survey
Tech teams
Pesticide Detections
0 1 2 3 4 5 6 7 8 9 10 11 12 130
20
40
60
80
100
120
140
160
Products Detected
Num
ber o
f bee
bre
ad s
ampl
es
N=63221 % had no detectable contaminationMean 2.36 productsMean excluding no detects: 3
Frequency of Samples with varying HQ
Hazard Quotient Score22%
55%
13%
5%5%
1%
00-100100-500500-10001000-50005000+
• Fenpyroximate• miticide
• Prallethrin• mosquito