Rockfish Sebastes schlegeli was exposed to fluoranthene, a ubiquitous polycyclic aromatic hydrocarbon, at 1 and 10 μg/L for 4 weeks followed by depuration period of 8 weeks. Although the fluoranthene in the plasma reached only 1.8~1.9 times seawater concentration, it was 6.5~15.7 times higher in the liver, spleen and bile indicating efficient accumulation in the lipid-containing body tissues. When the exposed fish were then maintained in clean water, rapid fluoranthene decline occurred in the initial 2 weeks followed by a rather slow phase. This result suggests that fluoranthene accumulates efficiently provided the existence in the culture medium, but the contaminant disappears rapidly once the chemical source is removed. The fluoranthne residue in fish tissues my be a good indicator for recent PAHs exposure.
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