2012년 제주의 양식 넙치 및 자연산 어류의 Kudoa septempunctata 감염 조사
Monitoring of Kudoa septempunctata in Cultured Olive Flounder and Wild Fish in Jeju Island during 2012
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참고문헌
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초록
Kudoa septempunctata가 한국의 양식 넙치의 근육에 기생하는 것이 보고되어, 본 연구에서는 2012년 동안 제주 지역의 양식 넙치 및 자연산 어류에서 K.septempunctata의 감염 현황을 조사하였다. 제주지역 26개소의 넙치 양식장으로부터 143마리를 조사한 결과, 4개소 7마리(4.9%)에서 쿠도아 감염이 확인되었으며, 넙치 치어 67마리에서는 쿠도아가 검출되지 않았다. 또한, 제주 지역에서 어획 된 자연산 어류 8종에서도 쿠도아가 검출되지 않았다. 쿠도아가 검출 된 7마리 어류에 대하여 등근육 부위별 쿠도아 검출을 비교하기 위하여, 넙치의 두부쪽에서 채취한 등근육, 미부쪽에서 채취한 등근육, 그리고 등근육 전체를 긁어 모은 샘플을 사용하여 검출률을 비교한 결과, 전체를 긁어 모든 샘플을 사용할 경우 검출률이 100%로 가장 높아, 어느 한 쪽에서 근육을 채취하는것 보다 등근육 전체 부위를 골고루 채취하는 것이 쿠도아 검출에 더 효율적임을 확인하였다.
Abstract
The study surveyed infection rate of Kudoa septempunctata parasitized in the trunk muscle of olive flounder, Paralichthys olivaceus, cultured in Jeju Island and wild fish species caught in the coastal area around Jeju Island during 2012. Among 143 olive flounder that were randomly sampled from 26 different culture farms, K. septempunctata was detected in 7 fish samples (4.9%) from 4 different culture farms, showing no typical Kudoa infestation. However, K. septempunctata was not detected in olive flounder fry sampled from hatcheries and 8 species of wild fish. In addition, we compared 3 different sampling sites on trunk muscle of 7 Kudoa positive fish that included head part, tail part and entire muscle. Among 7 fish, K. septempunctata was detected in 3 fish that were sampled from head part; while 4 fish from tail part of trunk muscle. However, all 7 fish were positive when sampled from entire muscle. Thus, we suggest that it will be more efficient to use entire muscle sample than sampling partial muscle parts for detection of K. septempunctata.
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