Table 5. Total bacterial density in the culture water (unit: 103 CFU/mL)
| Stages | Total bacterial density (103 CFU/mL) |
| Treatment 1 (control) | Treatment 2 (1 %) | Treatment 3 (3 %) | Treatment 4 (5 %) | Treatment 5 (7 %) |
| PL-20 | 4.80 ± 0.34a | 4.50 ± 0.23a | 4.30 ± 0.31a | 4.00 ± 0.28a | 4.00 ± 0.27a |
| PL-27 | 12.90 ± 1.54a | 7.60 ± 0.74b | 7.20 ± 0.87b | 6.40 ± 0.63c | 6.60 ± 0.88c |
| PL-34 | 14.40 ± 1.81a | 9.60 ± 1.31b | 8.50 ± 1.11b | 7.60 ± 1.08c | 7.80 ± 1.12c |
| PL-41 | 25.50 ± 2.43a | 23.70 ± 2.28b | 21.40 ± 2.03c | 20.70 ± 2.32c | 20.50 ± 2.38c |
| PL-48 | 42.00 ± 3.95a | 43.80 ± 3.34a | 42.30 ± 3.55a | 41.10 ± 3.26b | 41.30 ± 2.98b |
| PL-55 | 9.50 ± 0.94a | 8.90 ± 0.79b | 8.30 ± 0.86b | 8.00 ± 0.93b | 8.10 ± 0.98b |
Different letters in the same row indicate statistical significance (p < 0.05, Tukey’s multiple comparisons).
PL, postlarvae.