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Table 3 Pathogenicity of 12 Bt isolates and a reference strain (HD1) against the 3rd instar larvae of D. melanogaster after 24 and 48 h post-treatment

From: Isolation and identification of Bacillus thuringiensis strains native of the Eastern Province of Saudi Arabia

Strain D. melanogaster (Diptera)
24 h Mortality % 48 h Mortality %
LC50 (μg/ml−1) Slope ± SE LC50 (μg/ml−1) Slope ± SE
1 25.18 0.8 ± 0.9 54 16.8 0.9 ± 0.9 60
2 56.7 1.7 ± 0.9 42 44.4 1.7 ± 1.0 48
3 22.1 0.4 ± 0.9 27 445.6 0.4 ± 0.9 30
4 31.4 1.8 ± 1.0 57 55.0 3.8 ± 1.3 61
5 66.6 5.2 ± 1.6 70 52.6 4.0 ± 1.8 75
6 62.5 4.8 ± 1.4 73 54.4 5.6 ± 1.6 80
7 125.4 0.4 ± 0.9 39 50.0 0.8 ± 0.9 50
8 59.4 3.7 ± 1.2 39 55.4 3.5 ± 2.5 46
9 48.1 4.2 ± 3.0 80 54.4 5.2 ± 1.6 93
10 55.0 4.4 ± 1.3 86 32.5 4.3 ± 1.7 86
11 19.9 0.4 ± 0.9 51 20.2 0.8 ± 0.9 63
12 37.8 3.0 ± 0.7 57 19.3 0.4 ± 0.9 70
HD1 36.6 1.3 ± 0.9 51 20.2 0.8 ± 0.9 63