한국양식학회지 (Journal of Aquaculture)

한국양식학회 (The Korean Society of Fisheries and Aquatic Science)
권호 표지

남조류, Mastigocoleus sp.에 의한 한국산 참전보의 패각 괴사증

Shell Necrosis of Haliotis discus hannai by Mastigocoleus sp. (Cyanophyta) in Korea

  • 최상덕 (여수대학교 양식학과) ;
  • 윤장택 (국립수산진흥원 남해수산연구소) ;
  • 조용철 (국립수산진흥원 남해수산연구소)
  • 발행 : 1998.11.01
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초록

참전복(Haliotis discus hannai) 양성과정중 치패단계에서 발생된 패각 괴사증의 조사결과는 다음과 같다. 괴사된 전복패각에서 간균 형태(rod type)와 이질세포를 갖는 남조류가 관찰되었다. 그러나 주사전자현미경(SEM)의 자료에 근거하면 패각과 사증의 원인생물은 천공성 남조류, Mastigocoleus sp.로 나타났다. 천공성 남조류에 감염된 전복의 패각은 녹색에서 회백색으로 탈색되었고, 4~6번째 호흡공은 부서지기 쉬운 상태가 되었다. 양성 60일 후, 패각 괴사증은 갈색의 작은 집락이 산재되어있는 호흡공에서 주로 발생하였으며, 양성 후 3년까지 지속되었다. 이러한 패각 괴사증은 바다 채롱식 양식장에서 보다는 육상 수조식 양식장에서 주로 발생하였으며, 참전복의 성장에 커다란 영향을 미친 결과 3년산 참전복의 각장이 16mm였다.

Shell necrosis, which is found in the juvenile stage of Haliotis discus hannai in th culture process, was examine in this study. In the necrosis shell, bacteria of rod type and a blue green algal species with heterocyst were observed. However, it appears to be caused by a boring blue green alga, Mastigocoleus sp., as based on SEM data. At the time of its infection, the shell was discolored from green into bright-grey, and then began to be brittle at the 4th to 6th breathing hole. After 60 days of culture, necrosis occurred in the breathing holes with many brown tiny colony, and continued to 3 years after culture. This shell necrosis was found in the tank culture system in land rather than in the cage culture system in sea, and greatly affected to the growth of Haliotis discus hannai, resulting in very small size of 16mm in 3 year old shell.

키워드

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