Table 5.
Treatments | Incubation period (h) | No. of living shrimps | No. of dead shrimps | % Mortality |
---|---|---|---|---|
Control | ||||
Sea water + shrimps | 24 | 40 | 0 | 0 |
48 | 40 | 0 | 0 | |
72 | 40 | 0 | 0 | |
96 | 39 | 1 | 2.5 | |
Methanol + shrimps | 24 | 38 | 1 | 2.5 |
48 | 38 | 2 | 5 | |
72 | 37 | 3 | 7.5 | |
96 | 36 | 3 | 7.5 | |
Untreated toxins + shrimps | 24 | 7 | 33 | 83.0 |
48 | 5 | 35 | 86.7 | |
72 | 4 | 36 | 89.2 | |
96 | 3 | 37 | 91.7 | |
Treatment | ||||
Treated toxin with O. basilicum leaves extract + shrimps | 24 | 36 | 4 | 9.2 |
48 | 35 | 5 | 13.3 | |
72 | 32 | 8 | 20.0 | |
96 | 31 | 9 | 22.5 |
Values are mean of three replicates. Data was analyzed by analysis of variance (ANOVA).