Journal of Aquaculture (한국양식학회지)

The Korean Society of Fisheries and Aquatic Science (한국양식학회)
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Effects of Acute Toxicity of Chemical Treatments on the Cultured Oliver Flounder, Paralichthys olivaceus

화학제 처리가 성장기 넙치 (Paralichthys olivaceus)에 미치는 급성독성 효과

  • Ryu, Ho-Young (National Fisheries Research and Development Institute) ;
  • Bang, Jong-Deuk (National Fisheries Research and Development Institute) ;
  • Lee, Chu (East Sea Regional Fisheries Research Institute, National Fisheries Research and Development Institute) ;
  • Shim, Jeong-Min (East Sea Regional Fisheries Research Institute, National Fisheries Research and Development Institute) ;
  • Kim, Bong-Seok (East Sea Regional Fisheries Research Institute, National Fisheries Research and Development Institute)
  • 류호영 (국립수산진흥원) ;
  • 박종득 (국립수산진흥원) ;
  • 이주 (국립수산진흥원 동해수산연구소) ;
  • 심정민 (국립수산진흥원 동해수산연구소) ;
  • 김봉석 (국립수산진흥원 동해수산연구소)
  • Published : 1998.05.01
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Abstract

This study was carried out for the purpose of developing environmental friendly and effective chemical treatment method for the disease control in the land-based flounder culture which is industrially popular in the coastal area in Korean. The chemicals such as flounder, Paralichthys olivaceus and their effects on the fish based on the 24hr-$LC_{50}$, $LT_{50}$, 24-hour survival rate at each experimental concentration, recovery rate of the survived individual from chemical treatment, and the histological change of the gill after chemical treatment were investigated and analyzed. The 24hr-$LC_{50}$ was 321.65 ppm for formalin, 419.62 ppm for chlorine dioxide, and 395.97 ppm for hydrogen peroxide, respectively. The $LT_{50}$ was 15-hour for formalin, 17-hour for chlorine dioxide and 24-hour for hydrogen peroxide, respectively. Fishes exposed to the experimental concentration of three chemicals were quickly susceptible in the order of formalin, chlorine dioxide and hydrogen peroxide with a trend of shorter half lethal time at higher concentration. Initial survival rate of the flounder soon after chemical treatment was the highest in the hydrogen peroxide treatment compared with the other two chemicals. The histological damage by the hydrogen peroxide treatment was negligible compared with the other two chemicals. Accordingly, hydrogen peroxide treatment showed the lowest toxicity compared with the other two chemicals to the experimental fishes.

Keywords

References

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