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Table 2 Anopheles stephensi survival after exposure to clay tiles

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

Time after exposure

Treatment

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

Log rank statistic (Significance compared to control)

Time to 80% mortality days (± 1 SEM)*

Day 1

Control

10.0 (9.05-10.95)

---------

12.8 (± 0.48)

Pyrethroid

9.0 (8.25-9.75)

5.9 (P = 0.015)

12.3 (± 0.48)

B. bassiana

4.0 (3.74-4.26)

164.1 (P < 0.001)

5.0 (± 0.00)

Week 1

Control

13.0 (11.92-14.01)

---------

Not achieved

Pyrethroid

13.0 (11.0-15.0)

0.63 (P = 0.43)

Not achieved

B. bassiana

4.0 (3.73-4.27)

107.5 (P < 0.001)

5.3 (± 0.25)

Month 1

Control

13.0 (12.23-13.77)

---------

12.3 (± 0.25)

Pyrethroid

14.0 (13.52-14.48)

2.05 (P = 0.15)

12.5 (± 0.96)

B. bassiana

5.0 (4.77-5.23)

190.2 (P < 0.001)

5.0 (± 0.00)

Month 2

Control

14.0 (12.88-15.12)

---------

Not achieved

Pyrethroid

13.0 (11.20-14.80)

0.85 (P = 0.36)

Not achieved

B. bassiana

5.0 (4.68-5.32)

162.37 (P < 0.001)

6.0 (± 0.00)

Month 3

Control

10.0 (9.07-10.93)

---------

Not achieved

Pyrethroid

9.0 (8.25-9.75)

5.7 (P = 0.017)

Not achieved

B. bassiana

4.0 (3.74-4.26)

168.7 (P < 0.001)

6.5 (± 0.50)

Month 4

Control

Not achieved

---------

Not achieved

B. bassiana

9.0 (8.40-9.60)

144.5 (P < 0.001)

12.3 (± 1.03)

Month 5

Control

Not achieved

---------

Not achieved

B. bassiana

Not achieved

18.7 (P < 0.001)

Not achieved

B. bassiana (repeat exposure)

11.0 (10.42-11.58)

119.8 (P < 0.001)

13.3 (± 0.48)

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