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Table I
Lethal doses LD50 and LD90 of Ascosphaera apis spores feed to third instars honey bee (Apis mellifera) larvae originating from three different subspecies, A. m. carnica, A. m. ligustica and A. m. mellifera.
| Subspecies | na | Slope± SE | H- | LD50c (95% CL) | Alld | LD90c (95% CL) | Alld |
|---|---|---|---|---|---|---|---|
| indexb | |||||||
| A. m. carnica | |||||||
| Colony 1 | 347 | 0.74± 0.09 | 1.78 | 113.3 (44.7–219.1) | a | 6.20 × 103 (2.37–37.01) | de |
| Colony 2 | 408 | 0.99± 0.09 | 1.51 | 530.4 (341.7–831.2) | c | 1.02 × 104 (0.49–3.35) | e |
| Colony 3 | 388 | 0.88± 0.09 | 1.88 | 113.6 (55.3–199.3) | a | 3.29 × 103 (1.49–12.56) | cd |
| Colony 4 | 293 | 0.93± 0.16 | 1.14 | 55.1 (11.1–123.0) | a | 1.33 × 103 (0.63–5.47) | abc |
| A. m. ligustica | |||||||
| Colony 1 | 715 | 0.67± 0.06 | 1.82 | 534.6 (329.8–918.5) | c | 4.18 × 104 (1.43–24.56) | f |
| Colony 2 | 593 | 0.68± 0.07 | 1.88 | 446.4 (234.7–854.8) | bc | 3.51 × 104 (1.11–25.91) | f |
| Colony 3 | 626 | 0.88± 0.80 | 2.19 | 905.0 (570.2–1567) | d | 2.55 × 104 (1.02–11.54) | ef |
| A. m. mellifera | |||||||
| Colony 1 | 422 | 0.69± 0.09 | 1.60 | 78.0 (28.8–149.5) | a | 5.61 × 103 (2.15–34.55) | cde |
| Colony 2 | 578 | 0.88± 0.10 | 1.69 | 259.9 (124.3–444.2) | b | 7.41 × 103 (3.52–26.57) | cde |
| Colony 3 | 487 | 1.26± 0.11 | 1.90 | 291.9 (198.1–421.9) | b | 3.07 × 103 (1.78–7.03) | bcd |
| Colony 4 | 507 | 1.18± 0.09 | 1.65 | 104.2 (68.6–145.0) | a | 1.27 × 103 (0.79–2.44) | a |