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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)