한국어병학회지 (Journal of fish pathology)

  • 제15권3호
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  • Pages.99-104
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  • 2002
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  • 1226-0819(pISSN)
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  • 2233-5412(eISSN)
한국어병학회 (The Korean Society of Fish Pathology)
권호 표지

Pb의 노출에 따른 넙치, paralichthys olivaceus, 치어의 생존, 성장 및 산소소비율의 변화

Change of Survival, Growthand Oxygen Consumption Rate in the Juvenile Olive Flounder,Paralichthys olivaceus Exposed to Lead

  • 발행 : 2002.12.01
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초록

넙치의 생존, 성장 및 대사에 미치는 납의 만성적 독성을 파악하기 위하여 6주 동안 납 0, 80, 150, 230, 420 ${\mu}g/L$농도에 노출시켜 실험을 실시하였다. 넙치의 생존율은 납 농도 230 ${\mu}g/L$이상에서 유의한 감소를 나타냈다. 넙치의 성장률과 사료효율은 납 농도가 증가할수록 감소를 하여 150 ${\mu}g/L$이상의 농도에서는 대조구에 비하여 유의한 감소를 나타냈다. 넙치의 대사율은 납 농도 80, 150, 230, 420 ${\mu}g/L$에서 대조구보다 각각 21.4, 23.8, 36.8, 44.9 %가 저하했으며, 80 ${\mu}g$/L이상의 농도에서는 유의한 감소를 나타냈다.

Experiments were carried out to investigate the effects of lead exposure on survival, growth and oxygen consumption of juvenile oliver flounder, Paralichthys olivaceus for 6 weeks. Survival rate of the oliver flounder was significantly affected above 150 $\mu{g/L}$. Growth rate of the olive flounder exposed to ≥ 150 $\mu{g/L}$ of lead concentration were significantly decreased than that exposed to normal condition. Metabolic rate in the lead concentration ≥ 80 $\mu{g/L}$ was significantly reduced with increasing lead concentration then that in normal condition. This study revealed that high lead concentration (≥ 80 $\mu{g/L}$) reduced growth and metabolic rate of the juvenile olive flounder suggesting potential influence on the natural mortality of olive flounder in the coastal areas.

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