Table 7.
Overview about exposure assessment scenarios and results for worker bees and larvae
| Feed type | n of samples | Storage temperature of feed (°C) | Average concentration (mg/kg ww) (LB/UB) | P95 concentration (mg/kg ww) (LB/UB)(a) | Exposure worker bees (μg per day, LB/UB) with mean concentration | Exposure worker bees (μg per day, LB/UB) with P95 concentration | Exposure larvae (μg per day, LB/UB) with mean concentration | Exposure larvae (μg per day, LB/UB) with P95 concentration | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Data set A | Complementary feed | 95 | n.a. | 38.5/39.1 | 360/360 | 0.47/0.48 | 4.40/4.40 | 0.50/0.51 | 4.65/4.65 | |
| Complementary feed (without outliers) | 90 | n.a. | 8.1/8.7 | 25/25 | 0.10/0.11 | 0.31/0.31 | 0.10/0.11 | 0.32/0.32 | ||
| Complete feed | 31 | n.a. | 15.1/15.2 | ‐‐ | 0.18/0.19 | ‐‐ | 0.20/0.20 | ‐‐ | ||
| Sugar syrup | 90 | n.a. | 17.4/17.7 | 36.4/36.4 | 0.21/0.22 | 0.44/0.44 | 0.22/0.23 | 0.47/0.47 | ||
| Complementary feed, complete feed, sugar syrup | 216 | n.a. | 26.4/26.7 | 42.0/42.0 | 0.32/0.33 | 0.51/0.51 | 0.34/0.34 | 0.54/0.54 | ||
| Complementary, complete feed, sugar syrup (without outliers) | 211 | n.a. | 13.1/13.5 | 35.0/35.0 | 0.16/0.17 | 0.43/0.43 | 0.17/0.17 | 0.45/0.45 | ||
| Data set B |
Winter bee feed stored |
3 months | 5 | 20 | 23.7 | ‐‐ | 0.29(b) | ‐‐ | 0.31 | ‐‐ |
| 6 months | 5 | 20 | 24.5 | ‐‐ | 0.3 | ‐‐ | 0.32 | ‐‐ | ||
| 9 months | 5 | 20 | 26.7 | ‐‐ | 0.33 | ‐‐ | 0.35 | ‐‐ | ||
| 12 months | 5 | 20 | 27.6 | ‐‐ | 0.34 | ‐‐ | 0.36 | ‐‐ | ||
LB: lower bound; n: number; n.a.: not available; UB: upper bound; ww: wet weight; To calculate the feed intakes a 72% of dry matter content was used, as it is the usual dry matter content of a sugar syrup.
a
The 95th percentile estimates obtained on categories with less than 60 observations may not be statistically robust (EFSA, 2011). Those values were not included in this table.
b
For Data set B, LB and UB calculations were the same as all samples were quantified.