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Table 4 Anopheles stephensi survival after exposure to wood tiles

From: Storage and persistence of a candidate fungal biopesticide for use against adult malaria vectors

Time after exposure

Treatment

Median Lethal Time in days (95% C.I.)

Log rank statistic (Significance compared to control)

Time to 80% mortality days (± 1 SEM)

Day 1

Control

10.0 (9.34-10.66)

---------

12.8 (± 0.48)

Pyrethroid

1.0 (0.00-0.00)

198.7 (P < 0.001)

1.0 (± 0.00)

B. bassiana

4.0 (3.64-4.37)

105.7 (P < 0.001)

5.5 (± 0.87)

Week 1

Control

10.0 (7.38-12.63)

---------

Not achieved

Pyrethroid

1.0 (0.00-0.00)

36.6 (P < 0.001)

10.5 (± 2.02)

B. bassiana

4.0 (3.76-4.25)

65.5 (P < 0.001)

5.8 (± 0.75)

Month 1

Control

9.0 (7.82-10.19)

---------

12.3 (± 0.48)

Pyrethroid

1.0 (0.00-0.00)

107.9 (P < 0.001)

3.0 (± 1.22)

B. bassiana

7.0 (6.05-7.59)

3.5 (P = 0.060)

11.5 (± 1.04)

Month 2

Control

11.0 (10.14-11.86)

---------

Not achieved

Pyrethroid

1.0 (0.00-0.00)

88.19 (P < 0.001)

5.0 (± 2.31)

B. bassiana

7.0 (6.46-7.54)

80.4 (P < 0.001)

9.3 (± 0.75)

Month 3

Control

10.0 (9.07-10.93)

---------

Not achieved

Pyrethroid

9.0 (8.25-9.75)

5.7 (P = 0.017)

7.5 (± 3.75)

B. bassiana

4.0 (3.74-4.26)

168.7 (P < 0.001)

Not achieved

Month 4

Control

Not achieved

---------

Not achieved

Pyrethroid

Not achieved

41.9 (P < 0.001)

Not achieved

B. bassiana

Not achieved

11.3 (P = 0.001)

Not achieved

Month 5

Control

Not achieved

---------

Not achieved

Pyrethroid

2.0 (1.69-2.31)

122.9 (P < 0.001)

Not achieved

B. bassiana

Not achieved

0.92 (P = 0.34)

Not achieved

  1. ‘Not achieved’ indicates that the desired level of mortality (50% - Median Lethal Time or 80%) was not reached before the end of the 14 day monitoring period.