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The larvicidal activity (mean mortality ± standard error) of different concentrations of aqueous extract of the green berries of S. villosum on third instar larvae of S. aegypti. Student's t-test t = 29.42*, 5.5*, 17.0* (between 0.5% and 0.1%) 12.43*, 3.32*, 14.0* (between 0.5% and 0.2%) and 1.73*, 4.33*, 4.0* (between mortality in 0.5% and 0.3% plant extract at 24, 48 and 72 hours bioassay); * denotes significant (p < 0.05); table value = 2.92 at five degrees of freedom. M, mortality (%); SE, standard error. |
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| Period of exposure (hours) |
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|
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| Concentration (%) |
24 |
48 |
72 |
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|
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| 0.1 |
20 ± 5.77 |
26.67 ± 8.67 |
30 ± 8.81 |
| 0.2 |
30 ± 7.69 |
36.67 ± 5.77 |
40 ± 7.69 |
| 0.3 |
60 ± 5.57 |
70 ± 1.92 |
73.33 ± 3.84 |
| 0.4 |
66.66 ± 1.92 |
70 ± 1.92 |
76.66 ± 5.57 |
| 0.5 |
76.66 ± 1.92 |
86.66 ± 5.77 |
90 ± 1.92 |
Chowdhury et al. BMC Complementary and Alternative Medicine 2008 8:10 doi:10.1186/1472-6882-8-10 |
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