Table 6. Total Vibrio bacterial in culture water (unit: 10³ CFU/mL)

Stages	Total bacterial density of 5 the treatments (10³ CFU/mL)
Stages	Treatment 1 (control)	Treatment 2 (1 %)	Treatment 3 (3 %)	Treatment 4 (5 %)	Treatment 5 (7 %)
PL-20	0.14 ± 0.04^a	0.12 ± 0.04^a	0.08 ± 0.01^b	0.06 ± 0.01^b	0.06 ± 0.01^b
PL-27	0.58 ± 0.06^a	0.46 ± 0.05^b	0.35 ± 0.04^c	0.33 ± 0.03^c	0.32 ± 0.03^c
PL-34	0.72 ± 0.08^a	0.57 ± 0.06^b	0.43 ± 0.06^c	0.39 ± 0.05^c	0.39 ± 0.05^c
PL-41	2.74 ± 0.28^a	2.17 ± 0.19^b	1.86 ± 0.15^c	1.62 ± 0.15^c	1.76 ± 0.21^c
PL-48	3.81 ± 0.42^b	2.83 ± 0.31^b	2.78 ± 0.29^b	2.57 ± 0.31^b	2.64 ± 0.19^b
PL-55	0.12 ± 0.02^a	0.12 ± 0.03^a	0.10 ± 0.01^b	0.09 ± 0.01^b	0.09 ± 0.01^b

Different letters in the same row indicate statistical significance (p < 0.05, Tukey’s multiple comparisons).
PL, postlarvae.