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http://dx.doi.org/10.5657/kfas.2003.36.1.044

Cadmium Elimination in Tissue of Olive Flounder, Paralichthys olivaceus after Long-Term Exposure  

KIM Seong-Gil (Department of Aquatic Life Medicine, Pukyong National University)
JANG Suck-Woo (Department of Aquatic Life Medicine, Pukyong National University)
KANG Ju-Chan (Department of Aquatic Life Medicine, Pukyong National University)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.36, no.1, 2003 , pp. 44-48 More about this Journal
Abstract
Experiments were carried out to investigate the elimination of cadmium in tissues (gill, intestine, liver, kidney and muscle) of flounder, Paralichthys olivaceus, after sub-lethal Cd exposure (5, 50, 100 ${\mu}g/L$). During the depuration phase, Cd concentration in the gill decreased immediately following the end of the exposure period. The elimination rates at the end of depuration periods were $18\%$ for 50 ${\mu}g/L$ exposure and $70\%$ for 100 ${\mu}g/L$ exposure. Intestine showed fastest elimination rates of Cd at all concentration. At the end of the depuration period, the Cd concentration was similar to that in the control, Cd elimination in liver significantly decreased after 10 days of depuration period. After 20 days of depuration, the elimination rate was $66.20\%$ in the fish exposed to 50 ${\mu}g/L$ and $86.22\%$ in the fish exposed to 100${\mu}g/L$. The order of cadmium elimination in tissues were decreased intestine>liver${\geq}$gill>>kidney during depuration periods. In this study the gill, intestine and liver showed faster elimination rate of Cd in 50, 100 ${\mu}g/L$-Cd exposure concentration. After the end of the Cd exposure, the Cd concentration in the kidney slowly decreased or remained constant and the Cd concentration in the muscle slowly increased or remained constant.
Keywords
Cadmium; Elimination; Accumulation; Paralichthys olivaceus; Exposure;
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