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ISSN : 1225-3480

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30권 4호

북방전복, Haliotis discus hannai의 장거리 수송을 위한 적정 수온 및 염분 조건

Optimum environmental condition of live container for long distance transport in live abalone Haliotis discus hannai

양성진 (국립수산과학원 전략양식연구소 양식관리과)
명정인 (국립수산과학원 전략양식연구소 양식관리과)
박정준 (국립수산과학원 전략양식연구소 양식관리과)
신윤경 (국립수산과학원 전략양식연구소 양식관리과)
한국패류학회지 / The Korean Journal of Malacology, (P)1225-3480;
2014, v.30 no.4, pp.363-370
https://doi.org/10.9710/kjm.2014.30.4.363
양성진, 명정인, 박정준, & 신윤경. (2014). 북방전복, Haliotis discus hannai의 장거리 수송을 위한 적정 수온 및 염분 조건. , 30(4), 363-370, https://doi.org/10.9710/kjm.2014.30.4.363

초록

북방전복을 활어상태로 장거리 수송에 적합한 수온 및 염분의 조건을 구명하기 위하여 수온 및 염분 별 생존율, 산소소비율의 생리적리듬 및 조직학적 변화를 조사하였다. $10^{\circ}C$와 $8^{\circ}C$에서는 모든 염분에서 생존율이 96-100%로 폐사가 거의 발생하지 않았다. $6^{\circ}C$와 $4^{\circ}C$의 경우 염분의 영향이 뚜렷하게 나타났으며 북방전복의 염분내성농도는 24.9 psu (Shin et al., 2011) 으로 염분 25 psu 이하는 생존에 영향을 미치는 염분이므로 저수온과의 복합 영향을 고려해볼 때 수송조건에 적합하지 못한 것으로 여겨진다. 북방전복의 24시간 동안 산소소비율의 일주리듬은 일반해수와 염분 $30{\pm}0.5psu$에서 수온간에 유의한 차이를 나타내지 않았다. 염분 및 수온 별 산소소비율은 모든 염분에서 수온이 하강할수록 감소하였으며, 일반해수에 비해 $30{\pm}0.5psu$에서 산소소비율은 다소 높게 나타났다. 북방전복 발상피와 근육의 조직학적 지표는 염분 $30{\pm}0.5psu$이하와 수온 $6^{\circ}C$이하의 복합구에서 상피층의 두께 감소 또는 혈림프동 확장 등이 관찰되었다. 이러한 결과로부터 북방전복의 장거리수송을 위한 수온의 적정범위는 $8-10^{\circ}C$, 염분은 $30{\pm}0.5psu$이상으로 여겨진다.

keywords
Haliotis discuss hannai, Long-distance transportation, Oxygen consumption, Temperature

Abstract

We investigated the survival rate by water temperature and salinity, physiological rhythm and morphological change of live abalone to get to know optimum water temperature and salinity suitable for long-distance transportation of live abalone. At $8^{\circ}C$ and above, 96-100% of survival rate was shown at all experiment groups. At $6^{\circ}C$, 66% of abalones survived in normal seawater but they showed 0% of survival rate at $30{\pm}0.5psu$ and $26{\pm}0.5psu$ of salinity at the same water temperature. There was no significant difference of oxygen consumption rate for a week between the seawater and $30{\pm}0.5psu$. Also, a positive correlation was shown between salinity and water temperature and the oxygen consumption rate was slightly higher at $30{\pm}0.5psu$ than seawater. Thinned epithelial layers and expansion of lymph sinus were observed less than $30{\pm}0.5psu$ or below $6^{\circ}C$ of temperature. This result shows that the optimum level of water temperature and salinity is considered to be $6-8^{\circ}C$ and more than $30{\pm}0.5psu$ respectively.

keywords
Haliotis discuss hannai, Long-distance transportation, Oxygen consumption, Temperature

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