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http://dx.doi.org/10.13000/JFMSE.2016.28.4.1006

Observation of External Injury and Morphological Movement for Analysis of Recovery Possibility after Storage of the Juvenile Sea Cucumber, Apostichopus japonicus  

KIM, Tae-Ik (South Sea Fisheries Research Institute, NIFS)
SON, Maeng-Hyun (Fish Desease Control Division, NIFS)
CHO, Jae-Kwon (Aquaculture Management Division, NIFS)
JIN, Young-Guk (South Sea Fisheries Research Institute, NIFS)
Publication Information
Journal of Fisheries and Marine Sciences Education / v.28, no.4, 2016 , pp. 1006-1013 More about this Journal
Abstract
The observed external injury, movement and survival rate according to storage and recovery of the juvenile sea cucumber, Apostichopus japonicus(wet weight $1.0{\pm}0.2g$). The investigated application possibility of external injury(grade I~IV) and movement variation(buccal tentacle, motion, obversion, movement) for estimate of survival rate. The survival rate was observed through the recovery after storage of the sea cucumber in various water temperature(10, 15, 20, $25^{\circ}C$) and hours(3, 6, 12, 24 hour). Grade of external injury lower in the 24 hour experiment group of $20^{\circ}C$ water temperature and 12 hour experiment group of $25^{\circ}C$ water temperature. Buccal tentacle and movement strong related survival rate and external injury. In the case of $20^{\circ}C$ water temperature, survival rate was observed decrease 24 hours experiment. $25^{\circ}C$ water temperature was high to 6 hours but 12 hours experiment group observed decrease of the survival rate. The lethal time(LT10) of the juvenile sea cucumber was 15.73 hours($20^{\circ}C$) and 5.57 hours($25^{\circ}C$). The results of this study provided various measurement method of survival rate according to transportation of the juvenile sea cucumber for release.
Keywords
Apostichopus japonicus; Storage; External injury; Movement; Survival;
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