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6020858 
Journal Article 
[Control of Zoea anorexia of Litopenaeus vannamei] 
Liang, HF; Ou, HS; Wu, YH 
2013 
0 
Guangdong Haiyang Daxue Xuebao
ISSN: 1673-9159 
33 
6 
87-91 
Chinese 
Zoea anorexia is a phenomenon that the zoea larvae eat little or nothing suddenly when they metamorphosize from zoea stageⅠ to stage Ⅱ, and the larvae have a high morbidity rate and mortality. The effects of prevention and treatment of anorexia through the water treatment, application of antimicrobial and probiotics were investigated in this thesis. The results indicated: 1) The breeding water disinfected with hypochlorite, disinfectant-PI or BCDMH (3-Bromo-1-chloro-5, 5-dimethyl hydanto) could not prevent the anorexia of zoea. However, formaldehyde had some effect. The morbidity of zoea larvae treated by formaldehyde was 75.3 %, which was significantly lower (P < 0.05) than that of the control group (88.4%). 2) Antibacterials such as Rifampicin, Terramycin, Franzolidonum, Norfloxacin and Erythromycin could not prevent and control the anorexia. There was no obvious difference for larval survival rate between the treatment and the control groups (P > 0.05) . 3） Microbial preparations used in this experiment had different effects on prevention of anorexia. Significant difference for both the morbidity and survival rate of larvae could be found between the treatment and the control groups (P < 0.05). Among all microbial preparations tested, Rhodogen probiotics had the best effects in prevention. The morbidity was 19.8%, and was 63.3% lower than that of the control group. Compared to the control, 50.0% zoea larvae with anorexia could be cured by Rhodogen probiotics, while the other microbial preparations used had no obvious effects. It is suggested that water treatment combined with probiotices application should be taken into consideration for zoea. 
Litopenaeus vannamei; Larvae; Anorexia; Control