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논문 기본 정보

자료유형
학술저널
저자정보
김승민 전려진 박명애 정현도 정준범
저널정보
한국수산과학회 한국수산과학회지 한국수산과학회지 제48권 제3호
발행연도
2015.6
수록면
337 - 345 (9page)

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초록· 키워드

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To investigate the causes of emaciation in cultured olive flounder Paralichthys olivaceus in Korea. We performed histological examinations and polymerase chain reaction (PCR) with a new primer set. In most cases, the most severe emaciation was observed in the abdominal area Using PCR on extracted livers, kidneys, spleens, gills, brains, and intestines, we found that areas around the kidneys and intestines were as almost always positive. In significantly ema-ciated fish, PCR was positive in all internal organs except the gills. In addition, the homology of 812-bp nucleotide sequences of the 28S rRNA gene was more than 99% in emaciated fish. Partial homology with Myxobolus spp. and Cystodiscus axonis, whose data were obtained from GenBank was 86% and 88%, respectively. Histological examina-tions detected spores in kidneys and intestines but not in other organs. We also performed cohabitation experiments to determine whether infections could be exchanged among species or only within species. Uninfected olive flounder and red sea bream, Pagrus major, cohabitating with emaciated olive flounder showed 100% and 0% cumulative mor-tality, respectively. Thus the cause of emaciation in cultured olive flounder of Korea is likely due to a new parasite.

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