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ISSN : 1225-3480
북방전복의 계절변동에 따른 대사변화 및 에너지흐름을 파악하기 위하여 2010년 5월부터 2011년 2월 동안 성장, 산소소비율, 암모니아질소배설률, 먹이섭취율 및 동화효율 등을 조사하였다. 조사기간 동안 수온은 8-23.2 ℃, 염분은 31.9-34.1psu이었다. 북방전복의 각장은 1년산에서 36.3 mm에서66.1 mm으로, 2년산에서는 60.6 mm에서 66.1 mm으로 성장하였으며, 육중은 각각 3.16 g에서 12.04 g과 15.8 g에서21.5 g으로 증가하였다. 산소소비율과 암모니아질소배설률은수온 상승에 따라 증가하는 경향을 보였으며, 먹이섭취율은 7월-10월 동안 높았다. 동화효율은 68-71 %으로 연령 및 계절간 유의한 차이는 없었다. SFG는 북방전복 1년산은 연중 +값을 보였으며, 2년산의 경우에는 7월을 제외하고 +값을 보여 연중 성장하는 것으로 나타나 조사기간 동안 수온, 염분 등에 의한 환경적인 영향은 없었다.
Growth, oxygen consumption, ammonia excretion, feeding and assimilation rate were examined from May 2010 to February 2011 in order to assess the physiological changes of Haliotis discus hannai in accordance with changes in season. The water temperature was in the range of 8-23.2℃ and the salinity in the range of 31.9-34.1psu during the examination period. The length of shell of Haliotis discus hannai grew from 36.3 mm to 66.1 mm in the 1 year old entities and from 60.6 mm to 66.1 mm for the 2 year old entities, while the weight of the meat increased from 3.16 g to 12.04 g and from 15.8 g to 21.5 g, respectively. The oxygen consumption and ammonia excretion rate displayed trend of increase in accordance with the increase in water temperature, while the feeding rate was high during the period from July to October. The assimilation rate was in the range of 68%-71% without significant difference between the age of the entities and seasons. SFG displayed +value throughout the year for the 1 year old entities of Haliotis discus hannai as well as for the 2 year old entities with the exception of the period of July, thereby showing that they are growing throughout the year. Therefore, there was no environmental effect including water temperature and salinity during the examination period.
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