|
Log probit analysis of the larvicidal activity of chloroform:methanol extract of the green berries of S. villosum on different instar larvae of S. aegypti. LC, lethal concentration; R, coefficient of regression equations. |
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| Type of instars of mosquito larvae |
Period of bioassay (hours) |
Regression equations |
R2 |
LC50 values (ppm) |
Lower and upper fiducidal limits (ppm) |
|
|
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| First |
24 |
Y = 29.82 + 0.820x |
0.97 |
22.06 |
16.05–27.66 |
| 48 |
Y = 33.16 + 0.820x |
0.97 |
19.58 |
14.36–24.20 |
|
| 72 |
Y = 31.19 + 0.923x |
0.98 |
19.19 |
13.97–23.45 |
|
|
|
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| Third |
24 |
Y = 29.83 + 0.820x |
0.97 |
11.67 |
8.49–14.84 |
| 48 |
Y = 33.16 + 0.820x |
0.97 |
9.54 |
6.82–12.25 |
|
| 72 |
Y = 31.19 + 0.923x |
0.98 |
5.97 |
2.15–9.79 |
|
|
|
|||||
| Fourth |
24 |
Y = 25.98 + 0.282x |
0.99 |
49.84 |
44.53–54.77 |
| 48 |
Y = 31.19 + 0.256x |
0.82 |
21.22 |
13.30–29.13 |
|
| 72 |
Y = 34.53 + 0.256x |
0.82 |
21.02 |
15.97–73.94 |
|
Chowdhury et al. BMC Complementary and Alternative Medicine 2008 8:10 doi:10.1186/1472-6882-8-10 |
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