Journal of Aquaculture (한국양식학회지)

The Korean Society of Fisheries and Aquatic Science (한국양식학회)
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Mass Mortaliaty by Aeromonas hydrophila Inferction in the Production of the Korean Mandarin Fish Fingerling, Siniperca scherzeri

쏘가리 (Siniperca scherzeri) 치어 생산에 있어서 Aeromonas hydrophila 감염에 의한 대량 폐사

  • 장선일 (국립수산진흥원 청평내수면연구소) ;
  • 이완옥 (국립수산진흥원 청평내수면연구소) ;
  • 이종윤 (국립수산진흥원 청평내수면연구소) ;
  • 조지현 (원광대학교 의과대학 임상병리학교실) ;
  • 김신무 (원광보건전문대학교 임상병리과) ;
  • 김강주 (원광대학 치과대학 구강비생물학교실)
  • Published : 1997.11.01
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Abstract

A specific disease syndrome, which led to massive mortality on the Korean mandarin fish fingerling (Sinperca scherzeri) at Chongpyong Inland Fisheries Institute was atudied. The causetive agent isolated from the diseased fish was identified as Aeromonas hydrophila on the basis of biochemical and physiological characteristics. Infection experiments in the Korean mandarin fish fingerling, weighting 3-4 g with A. hydrophila were conducted by immersion, oral administration, intramuscular injection, and injection of the soluble extracellular products secreted from it. Motality rate was higher virulence in intramuscular injection group than other experimental groups. In injection group of the soluble extracellular products, all fish treated with high concentration ($8{\times}10^9$ cfu/ml) were repidly killed into 3-6 hrs. There results show that the Korea mandarin fish fingerling has high susceptibility to A. hydrophila.

청평내수면연구소에서 발생한 쏘가리 치어의 대량 폐사 원인을 조사하였다. 병어로부터 분리된 원인균은 생화학적 및 생리학적 특성에 의해 Aeromonas hydrophila (A. hydrophila)로 동정되었다. A. hydrophila을 쏘가리 치어(3-4 g)에 침지, 경구투여, 근육피하 주사 및 세균이 분비한 가용성 세포의 산물 주사 등 여러 가지로 감염 실험을 하였다. 그 결과 근육피하 주사 실험군에 있어서는 다른 감염 실험에서보다 높은 폐사율을 보였고, 가용성 세포외 산물도 고농도 ($8{\times}10^9$ cfu/ml)로 처리한 어류에서는 3-6시간 이내에 모두 폐사되었다. 이러한 결과는 쏘가리 치어가 A. hydrophila에 감수성이 높은 것을 보여주었다.

Keywords

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