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Table 4 Percentage mortalities of old larvae (3rd and 4th instars) of Leptinotarsa decemlineata in response to the tested Beauveria bassiana isolates at 3, 5, 7, and 9 days after treatment under laboratory conditions

From: Efficacy of indigenous isolates of Beauveria bassiana (Balsamo) Vuillemin (Deuteromycota: Hyphomycetes) against the Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae)

Isolate name Percent mortality (±SE) from a single-dose trial* df F P
3 days 5 days 7 days 9 days
BbKm-1 3.3±3.3deC** 15.0±2.9cdBC 26.7±3.3cdeB 50.0±2.9defA 11.0 40.8 0.000
BbKm-2 3.3±1.7deC 11.7±1.7dBC 20.0±2.9eB 45.0±2.9efA 11.0 58.3 0.000
BbDm-1 18.3±1.7abcdC 45.0±2.9aB 61.7±6.0abB 95.0±2.9aA 11.0 74.1 0.000
BbFn-3 0.0±0.0eB 10.0±2.9dB 41.7±3.3abcdeA 51.7±1.7cdefA 11.0 110.2 0.000
BbKp-1 1.7±1.7deC 21.7±4.4bcdB 53.3±1.7abcA 61.7±4.4cdeA 11.0 70.1 0.000
BbAk-1 3.3±3.3deB 8.3±1.7dB 25.0±2.9deA 38.3±4.4fA 11.0 24.6 0.000
BbSr-1 10.0±2.9bcdeC 30.0±2.9abcBC 48.3±7.3abcdB 81.7±3.8abA 11.0 46.0 0.000
BbKr-1 18.3±1.7abcdC 31.7±3.3abcC 46.7±3.3abcdeB 68.3±3.3bcdA 11.0 50.9 0.000
BbDs-2 28.3±4.4aC 46.7±3.3aBC 58.3±6.7abB 91.7±6.0aA 11.0 25.6 0.000
BbMg-1 16.7±4.4abcdeC 30.0±2.9abcBC 40.0±5.8bcdeB 70.0±2.9bcA 11.0 29.6 0.000
BbMg-2 26.7±3.3abD 41.7±1.7aC 61.7±1.7abB 93.3±4.4aA 11.0 92.0 0.000
BbMp-1 21.7±6.0abcD 45.0±5.8aC 68.3±4.4aB 96.7±1.7aA 11.0 45.0 0.000
BbGp-1 5.0±2.9cdeC 18.3±1.7bcdBC 45.0±10.0abcdeB 81.7±6.7abA 11.0 29.4 0.000
BbKl-1 16.7±3.3abcdeC 33.3±4.4abC 55.0±5.8abB 85.0±2.9abA 11.0 48.3 0.000
df 41 41 41 41    
F 9.0 17.9 8.1 27.0    
P 0.000 0.000 0.000 0.000    
  1. *In a single-dose trial, all the isolates were tested at a concentration of 1 × 107 conidia/ml
  2. **Means in a column followed by the same lowercase letter are not significantly different, and means in a row followed by the same uppercase letter are not significantly different (Tukey’s HSD test; P < 0.05)