Table S1. Summary table of N. ceranae and N. apis prevalence from studies conducted across several years and countries. Prevalence varies
considerably across space and time, though absolute estimates probably depend to some extent on methods of detection employed (efficiency of
DNA/RNA extraction, PCR primers employed), sample size (number of workers per colony analysed) and when they were collected during the
flight season.
Country
Spain
Spain
Spain
Spain
Spain Montane
Spain supra-mediterranean
Spain Colline
Spain Meso-mediterranean
Spain Termo-mediterranean
Spain Andalusia
Spain Andalusia
Spain Catalonia
Spain Catalonia
Spain Valencia
Spain Valencia
Spain Andalusia
Spain
Spain (Canary Islands)
Spain (Canary Islands)
Spain (Canary Islands)
Spain (Canary Islands)
Spain
Spain
N. ceranae
prevalence (%)
46
43
47
44
35
38
42
56
57
29
65
7
22
27
47
95
67
0
36
32
49
50
70
N. apis
prevalence (%)
15
10
8
11
16
17
3
10
6
10
8
7
0
24
12
19
21
0
0
0
0
14
13
Source
[1]
[1]
[1]
[1]
[1]
[1]
[1]
[1]
[1]
[2]
[2]
[2]
[2]
[2]
[2]
[3]
[3]
[4]
[4]
[4]
[4]
[5]
[5]
No colonies
screened
629
454
526
329
301
454
191
492
256
80
80
30
9
34
17
446
604
18
44
44
45
113
115
Year
2006spring
2006autumn
2007spring
2007autumn
2006/07
2006/07
2006/07
2006/07
2006/07
2002
2007
2002
2007
2002
2007
2006/07
2007
1998
2008
2010
2011
2006
2010
Scotland
78
73
Germany
7
20
Germany
10
24
Germany
19
12
Germany
19
27
Germany
16
22
Germany
5
8
Germany
2
8
Germany
2
5
Germany
2
3
Sweden
3
33
Lithuania
64
68
a
Balkans
84
<1a
Florida/California
60
20
a
Average across Serbia, Bosnia and Herzegovina, Montenegro and FYROM
[6]
[7]
[7]
[7]
[7]
[7]
[7]
[7]
[7]
[7]
[8]
[9]
[10]
[11]
71
220
238
228
209
210
237
226
219
210
967
129
325
76
2011
2005spring
2006spring
2007spring
2008spring
2009spring
2005 autumn
2006autumn
2007autumn
2008autumn
2007
2011
2002/09
2007
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