International Journal of Aquaculture, 2017, Vol.7, No. 3, 15
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22
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Table 2 Daily observations of the virulence of
Vibrio mimicus
on shrimp (
Penaeus monodon
) postlarvae for four days post infection
Vibrio mimicus
(cfu/ml)
No of dead shrimp /No tested (with time intervals)
Mortality (%)
0 h
24 h
48 h
72 h
96 h
Control (Non-infected)
0/50
0/50
0/50
3/50
3/50
6
3 x 10
3
0/50
0/50
5/50
8/50
13/50
26
3 x 10
4
0/50
3/50
10/50
18/50
23/50
46
3 x 10
5
0/50
8/50
18/50
23/50
28/50
56
3 x 10
6
0/50
13/50
23/50
38/50
48/50
96
3 x 10
7
0/50
17/50
32/50
50/50
50/50
100
Figure 3 Hepatopancreas of non-infected shrimp (Control)
Note: Mag. ×400 H and E (Hemolysin and Eosin)
Imp: Healthy Hepatopancreas
Figure 4 Hepatopancreas of shrimp from culture inoculated with
Pseudomonas aeruginosa
Note: Mag. ×400 H and E (Hemolysin and Eosin)
Imp: Healthy Hepatopancreas
Vacuole
Nucleus
Tubul
e
Tubule lumen
Normal vacuol
Normal nucleus
Normal lumen
Normal connective tissue
Normal tubule
