Table 1 Mortalities of B. pfeifferi snails exposed to different concentrations of A. aspera aqueous leaf extract for 24, 48 and 72 h
Concentration (ppm) | 24 h | 48 h | 72 h | |||
|---|---|---|---|---|---|---|
Exposed | Dead | Exposed | Dead | Exposed | Dead | |
0 | 30 | 0 | 30 | 0 | 30 | 0 |
25 | 30 | 0 | 30 | 0 | 30 | 0 |
50 | 30 | 3 | 30 | 4 | 30 | 7 |
75 | 30 | 12 | 30 | 15 | 30 | 17 |
100 | 30 | 30 | 30 | 30 | 30 | 30 |
200 | 30 | 30 | 30 | 30 | 30 | 30 |
400 | 30 | 30 | 30 | 30 | 30 | 30 |