• Korean Journal of Environmental Biology
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• v.36 no.3
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• pp.377-384
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• 2018

This study focused on the effects of feeding on postlarvae of shrimp, Litopenaeus vannamei, during the identified acclimation time to low salinity. A total of 5 different salinity groups with or without feeding (32, 24, 16, 8, and 2 psu, 1 liter, triplicates) were prepared, and 30 shrimp were settled at PL21 (postlarvae) and placed in each group. After 24 hours of the experimentation process, the survival rate of the fed and starved groups was observed to be lower in the 2 psu group compared to other salinity groups, with the rate of 86.6% and 81.1%, respectively. The condition index of glucose and triglyceride, which are important factors for osmoregulation and as energy sources, was 4.2-7.6 times and 2.7-3.4 times higher in the fed groups than the starved groups at all the levels of salinities. The creatine level increased by 1.1-1.5 times in the starved groups as compared to the fed groups. Likewise, the activity of all the digestive enzymes like, lipase, ${\alpha}$-amylase, trypsin, and alkaline protease were clearly higher in the fed groups (ANOVA, p<0.05). Apparently, it was observed that feeding is effective for the postlarvae of shrimp, which shows a characteristic fast metabolism and larval development, during the acclimation period to low salinity.

• The monthly packaging world
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• s.274
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• pp.76-84
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• 2016

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 1995.06a
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• pp.278-279
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• 1995

• The monthly packaging world
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• s.235
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• pp.88-101
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• 2012

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 1997.06a
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• pp.61-65
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• 1997

• Proceedings of the Korean Aquaculture Society Conference
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• 2006.05a
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• pp.41-42
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• 2006

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2002.05a
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• pp.55-56
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• 2002

• Proceedings of the Korean Aquaculture Society Conference
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• 2004.05a
• /
• pp.160-161
• /
• 2004

• Proceedings of the Korean Society of Fisheries Technology Conference
• /
• 1998.06a
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• pp.159.1-160
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• 1998

• Journal of fish pathology
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• v.27 no.2
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• pp.133-137
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• 2014

We examined the cause of a disease outbreak in rainbow trout Oncorhynchus mykiss, which were adapting to a seawater in an aquaculture farm in Jeju on April, 2013. Most of the diseased fish showed a severe ulcer on the skin, enlarged spleen, expanded stomach and hemorrhage of abdominal and pyloric region. Although no parasites, fungi or viruses were isolated from diseased fish, over 200 same bacterial colonies were isolated from liver, spleen and kidney. Nucleotide sequences of the 16S rDNA gene of the bacterium in this study showed 100% identity with Vibrio anguillarum. This study is the first report of V. anguillarum infection in rainbow trout during sea adaption in Korea.