Korean Journal of Ichthyology (한국어류학회지)

The Ichthyological Society of Korea (한국어류학회)
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Stomach Distension Syndrome of Seawater Farmed Rainbow Trout(Oncorhynchus mykiss)

해수 사육 무지개송어(Oncorhynchus mykiss)의 위팽창증후군

  • Kim, Wi-Sik (Department of Aqualife Medicine, Chonnam National University) ;
  • Kong, Kyoung-hui (Department of Aqualife Medicine, Chonnam National University) ;
  • Oh, Myung-Joo (Department of Aqualife Medicine, Chonnam National University)
  • 김위식 (전남대학교 수산생명의학과) ;
  • 공경희 (전남대학교 수산생명의학과) ;
  • 오명주 (전남대학교 수산생명의학과)
  • Received : 2017.02.17
  • Accepted : 2017.03.08
  • Published : 2017.03.31
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Abstract

About 10% mortality occurred in cultured rainbow trout Oncorhynchus mykiss at a marine farm in Jeju in 2014. Diseased fish showed markedly abdominal distension and distended stomach. Although parasites, bacteria or viruses were not isolated from diseased fish, numerous Candida sp. were isolated from distended stomach. In experimental infection with Candida sp., mortality was not observed in most fish and clinical sign of distended stomach was not observed in the fish. These results suggest that Candida sp. may not be the etiologic agent of stomach distension syndrome. This is the first report of stomach distension syndrome in seawater farmed rainbow trout in Korea.

본 연구에서는 2014년 제주도에 위치한 양식장에서 해수로 사육 중인 무지개송어에서 만성질병으로 인해 약 10%의 누적 폐사가 발생하였다. 병어는 복부가 팽만되어 있었고 위가 심하게 팽창되어 있었다. 질병 검사 결과, 기생충, 세균, 바이러스는 검출되지 않았으나 팽창된 위에서 다수의 Candida sp.가 분리되었다. Candida sp.를 사용하여 감염 실험을 실시한 결과, 대부분 개체에서 폐사가 발생하지 않았고 위 팽창 증상이 관찰되지 않아 Candida sp.는 본 질병의 원인 병원체가 아닌 것으로 사료되었다. 본 연구에서는 국내에서 처음으로 해수 사육 무지개송어에서 위팽창증후군이 발생하는 것을 확인하였다.

Keywords

References

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