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ISSN : 1225-3480
본 연구는 완도군 군외면 지역에 수평망식 갯벌참굴 양식을 도입하고자 하는 양식 기술개발의 일환으로서 양식해역의 위생학적 특성을 조사하였다. 해수의 경우 2012년 4월부터 2013년 3월까지 매월 1회 실시하였고, 굴 시료는 높이 90 cm인 가상식 양성망에서 채집하였다. 조사해역의 평균 수온범위와 염분 농도범위는 <TEX>$8.6-28.0^{\circ}C$</TEX>이며, 26.2-33.5 psu였다. 해수의 대장균군 및 분변계대장균은 각각 < 1.8-13.0 MPN/100 mL의 범위로, 모두 기준치 43 MPN/100 mL이하를 유지하였다. 한편 굴의 분변계대장균은 기준치를 초과하는 경우는 단 1건에 불과하였다. 강우 발생후, 경과일에 따른 참굴 및 해수의 분변계대장균은 모두 해역평균치로 회복되는 데는 약 5일이 소요되었다. 배수유역의 영향반경은 1-292 m에 불과하여 육상오염원에 의한 영향은 미미하였다. 조사해역은 우리나라 수출용 패류생산해역의 위생학적 수질기준과 미국의 패류양식장에 대한 세균학적 수질기준의 충족하며, 생산된 굴의 경우, 유럽연합 A등급 해역의 위생관리에 충족되는 것으로 확인되었다.
To introduce an oyster rack culture in tidal flat of Wando-gun, Korea, we investigated sanitary conditions from 2012 April to 2013 March in oyster growing waters and adjacent area in Wando. Average seawater temperature and salinity ranged 8.6-28.0℃ and 26.2-33.6 psu, respectively. The coliform group and fecal coliform of seawater ranged < 1.8-13.0 MPN/100 mL each. Only one of 60 samples was exceeded in the European criteria of fecal coliform. Influence of adjunct basin’s pollution load on cultural waters was negligible, which half radius of dilution was not above 300 m. According to our observation, however, landing of oyster should be banned for at least 5 days after the heavy rainfall. Our findings meet the sanitary seawater criteria for domestic use and export of shellfish and classified as 'Class A' in European Community regulations for bivalve culture.
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