Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Long-Term Sublethal Cadmium Exposure Effected Survival, Growth and Metabolic Rate Change in the Olive Flounder, Paralichthys olivaceus

카드뮴의 장기노출에 따른 넙치, Paralichthys olivaceus의 생존, 성장 및 대사율의 변화

  • KANG Ju-Chan (Department of Aquatic Life Medicine, Pukyong National University) ;
  • KIM Seong-Gil (Department of Aquatic Life Medicine, Pukyong National University) ;
  • JEE Jung-Hoon (Department of Aquatic Life Medicine, Pukyong National University)
  • 강주찬 (부경대학교 수산생명의학과) ;
  • 김성길 (부경대학교 수산생명의학과) ;
  • 지정훈 (부경대학교 수산생명의학과)
  • Published : 2003.02.01
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Abstract

Experiments were carried out to investigate the effects of long term sub-lethal cadmium exposure on survival, growth and metabolic rate of olive flounder, Paralichthys olivaceus for 6 weeks. Survival rate of the flounder was significantly affected above $980{\mu}g/L$. Growth rates of the flounder exposed to ${\geq}210\;{\mu}g/L$ of cadmium concentration were significantly decreased than that exposed to normal condition, Metabolic rate in the cadmium concentration ${\geq}210\;{\mu}g/L$ was significantly reduced with increasing cadmium concentration than that in normal condition. This study revealed that high cadmium concentration $$({\geq}210\;{\mu}g/L$$ reduced growth and metabolic rate of the juvenile flounder suggesting potential influence on the natural mortality of olive flounder in the coastal areas.

넙치의 생존, 성장 및 대사에 미치는 카드뮴의 만성적 독성을 파악하기 위하여 6주 동안 여러 가지 카드뮴 농도에 노출시켜 실험을 실시하였다. 넙치의 생존율은 카드뮴농도 980 ${\mu}g/L$에서 유의한 감소를 나타냈다. 넙치의 성장률과 사료효율은 카드뮴농도가 증가할수록 감소를 하여 210 ${\mu}g/L$ 이상의 농도에서는 대조구에 비하여 유의한 감소를 나타냈다. 넙치의 대사율은 카드뮴농도 90, 210, 450, 980 ${\mu}g/L$에서 대조구보다 각각 3.3, 18.3, 30.0, $50.1\%$가 저하하여 210${\mu}g/L$ 이상의 농도에서는 유의한 감소를 나타냈다.

Keywords

References

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