Table 2.
Prevalence and abundance of pathogens and parasites in this study
| n (bees analyzed) | n Positive | Prevalence | Mean | log (n/ 100 ng RNA) | |||
|---|---|---|---|---|---|---|---|
| Mean of positives | Maximum | ||||||
| Viruses | Black queen cell virus | 1,064 | 895 | 84.1% | 2.7 | 3.2 | 7.8 |
| Lake Sinai virus | 1,064 | 446 | 41.9% | 1.5 | 3.7 | 7.5 | |
| Deformed wing virus B (VDV1) | 1,064 | 376 | 35.3% | 1.4 | 3.9 | 8.0 | |
| Acute bee paralysis virus | 1,064 | 173 | 16.3% | 0.5 | 2.8 | 8.2* | |
| Chronic bee paralysis virus | 1,064 | 164 | 15.4% | 0.4 | 2.7 | 7.4 | |
| Sacbrood virus | 1,064 | 118 | 11.1% | 0.2 | 2.2 | 6.7 | |
| Deformed wing virus A | 1,064 | 108 | 10.2% | 0.4 | 3.9 | 7.2 | |
| Aphid lethal paralysis virus | 1,064 | 37 | 3.5% | 0.0 | 1.3 | 3.6 | |
| Israeli acute paralysis virus | 1,064 | 14 | 1.3% | 0.0 | 0.9 | 5.6 | |
| Iridescent invertebrate virus IV | 1,064 | 4 | 0.4% | 0.0 | 1.0 | 1.2 | |
| Kashmir bee virus | 1,064 | 1 | 0.1% | 0.0 | 1.3 | 1.3 | |
| Bacteria | Frischella perrara | 1,064 | 824 | 77.4% | 4.3 | 5.5 | 8.3* |
| Paenibacillus larvae | 1,064 | 295 | 27.7% | 0.9 | 3.3 | 4.2 | |
| Melissococcus plutonius | 1,064 | 282 | 26.5% | 0.8 | 3.1 | 4.3 | |
| Parasites | Nosema ceranae | 1,064 | 1,026 | 96.4% | 4.8 | 5.0 | 8.6* |
| Crithidia/Lotmaria | 1,064 | 553 | 52.0% | 2.6 | 5.1 | 8.6* | |
| Acarapis woodi | 1,064 | 158 | 14.8% | 0.2 | 1.4 | 4.3 | |
| Nosema apis | 1,064 | 9 | 0.8% | 0.0 | 2.6 | 6.3 | |
*
Maximum value of the analysis, corresponds to Cq = 2.5