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Table II
Mean time to death (LT50) of third instar honey bee (Apis mellifera) larvae fed with two different doses of Ascosphaera apis spores. The larvae originated from three different honey bee subspecies, A. m. carnica, A. m. ligustica and A. m. mellifera.
| Dose of 1000 spores | Dose of 10000 spores | |||
|---|---|---|---|---|
| Subspecies | na | LT50± SE | na | LT50± SE |
| (days p.i.) | (days p.i.) | |||
| A. m. carnica | ||||
| Colony 1 | 104 | 6.57± 0.21 | 71 | 4.96± .025 |
| Colony 2 | 127 | 6.65± 0.21 | 63 | 5.24± 0.28 |
| Colony 3 | 120 | 6.43± 0.17 | 62 | 4.61± .020 |
| Colony 4 | 72 | 6.06± 0.2 | 51 | 5.20± 0.2 |
| All | 5.00± 0.12 | |||
| A. m. ligustica | ||||
| Colony 1 | 197 | 6.79± 0.17 | 109 | 5.83± 0.23 |
| Colony 2 | 115 | 6.97± 0.21 | 79 | 5.82± 0.24 |
| Colony 3 | 203 | 6.89± 0.16 | 116 | 6.24± 0.22 |
| All | 5.98± 0.13 | |||
| A. m. mellifera | ||||
| Colony 1 | 90 | 6.58± 0.21 | 45 | 4.96± 0.25 |
| Colony 2 | 154 | 6.65± 0.21 | 80 | 5.24± 0.28 |
| Colony 3 | 119 | 6.43± 0.17 | 83 | 4.61± 0.20 |
| Colony 4 | 142 | 6.06± 0.20 | 75 | 5.20± 0.23 |
| All | 5.26± 0.11 | |||