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ISSN : 1225-3480
현 시점에서 동해 북부에 한정되어 양식이 이루어지고 있는큰가리비 양식생산량 확대를 위하여 동부 북부에서 남부까지양식시험을 통하여 성장 특성을 분석하여 생식생산량 확대를위한 기초자료를 활용하고자 한다. 조기 종묘의 성장 특성으로2014년 2월에 채란 및 채묘한 치패의 평균 각장, 각고는 0.23 ± 0.002 mm이였다. 고성장군의 경우, 6월에 평균 각장, 각고는 각각 4.11 ± 0.08 mm, 4.28 ± 0.09 mm이였다. 10월에는23.63 ± 3.4 mm, 24.19 ± 4.5 mm이었다. 저성장군의 경우, 6월에 평균 각장, 각고는 각각 2.23 ± 0.7 mm, 1.99 ± 0.9 mm이였고, 10월에 17.06 ± 3.4 mm, 17.59 ± 4.5 mm로 성장하였다. 일간성장률은 고성장군은 0.037 mm/day, 저성장군은 0.027 mm/day 이었다. 8월에 지역별로 큰가리비의 성장을 보면 양양군, 강릉시, 영덕군, 포항시의 평균각장은 7.93 ± 0.2 mm으로 지역별로 큰가리비를 양성 시험한 결과, 포항 지역에서 각장 26.90 ± 3.6 mm로 가장 성장이 양호하였다. 이어서 영덕 지역이 23.56 ± 3.4 mm으로 나타났다. 이러한 결과로는 포항, 영덕 해수온과 식물플랑크톤이 큰가리비 성장에적합하게 형성된 것으로 판단된다.
Patinopecten yessoensis is known to be farmed only in the northern part of the East Sea today. In an attempt to extend its production area, we have conducted experiments both in the northern and southern parts of the East Sea and studied on their growth in an aim to use the results for increasing overall productivity of the species. Early juvenile scallops producted in February 2014 showed an average shell length of 0.23 ± 0.002. The high growth group showed an average shell length and shell height of 4.11 ± 0.08 mm and 4.28 ± 0.09 mm, respectively, in June while they were 23.63 ± 3.4 mm and 24.19 ± 4.5 mm in October. The low growth group showed an average shell length and shell height of 2.23 ± 0.7 mm and 1.99 ± 0.9 mm, respectively, in June while they were 17.06 ± 3.4 mm and 17.59 ± 4.5 mm in October. The daily growth rate of the high growth group was 0.037 mm/day and 0.027 mm/day for the low growth group. In August, we measured the shell length of Patinopecten yessoensis from Yangyang-gun, Gangneung-si, Yeongdeok-gun, and Pohang-si. Patinopecten yessoensis from Pohang-si showed the best growth performance with its shell length of 26.90 ± 3.6 mm. Patinopecten yessoensis from Yeongdeok was the second largest with its shell length of 23.56 ± 3.4 mm. We presume that optimal water temperature and phytoplankton abundance of the two regions have contributed to the good growth performance of the species.
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