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http://dx.doi.org/10.23005/ksmls.2022.7.2.205

Effect of Water Temperature, Salinity and Anaesthetic of Olive Flounder (Paralichthys olivaceus) to Live Transportation  

Yong Hyun, Do (Southeast Sea Fisheries Research Institute, NIFS)
Jae-Hye, Song (Southeast Sea Fisheries Research Institute, NIFS)
Si-Woo, Lee (Southeast Sea Fisheries Research Institute, NIFS)
Jung Yeol, Park (Department of Aquaculture and Aquatic Science, Kunsan National University)
Jun Wook, Hur (Department of Aquaculture and Aquatic Science, Kunsan National University)
Publication Information
Journal of Marine Life Science / v.7, no.2, 2022 , pp. 205-212 More about this Journal
Abstract
Transport is essential in the farming process of farmed fish and is one of the physical stress factors such as sorting. The effect of water temperature and anesthesia during low salinity transport was confirmed. In the experimental group, the water temperature was set to 20℃ (natural water temperature, NWT), 15℃ (cooling water temperature, CWT) respectively, in water with a salinity concentration of 35‰, 15‰ and an anesthetic (anesthesia, Anes., Sigma USA) was diluted and mixed to 50 ppm. A styrofoam box (66×42×20 cm) was used as a transport container, and 8 flounder were accommodated and transported in a plastic bag injected with 3 ℓ of seawater and liquid oxygen. As a result of the study, the concentration of cortisol before transport increased significantly from 2.4±0.1 ng ml-1 in the experimental groups except for the CWT+35‰ group (16.7±12.8 ng ml-1). The K+ concentration slightly increased from 3.1±0.0 mEq l-1 before transport to 4.5±1.1 mEq l-1 in the NWT+15‰ group, showing no difference, and significantly increased in all other experimental groups. There was no effect on changes in blood characteristics, and water temperature and anesthetic had a negative effect on osmotic control due to stress. AST and ALT were not affected.
Keywords
Olive flounder; Paralichthys olivaceus; Water temperature; Salinity; Anaesthetic; Live transportation;
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