Author(s)

M.-H. Chen & C.-Y. Chen

Abstract

Toxicity of contaminated harbour sediment to grey mullet, Liza macrolepis M.-H. Cher/ & C.-Y. Chen* ' Dept. of Marine Resources, National Sun Yat-sen University, Taiwan, Dept. of Marine Environmental Engineering, National Kaohsiung Institute of Marine Technology, Taiwan, R.O.C. Abstract Liza macrolepis, a filter and a detritus-mud feeder, were exposed to contaminated sediment from Kaohsiung Harbour, Taiwan, in order to evaluate the toxicity and bioaccumulation of metals associated with descending sediment-contaminated gradients. A 4x2 experimental design containing contaminated Kaohsiung Harbour sediment in varying amounts (100%, 50%, 25% and 0%) was employed in duplicate. The experimental sediment contained 30 mg of Hg, 8.0 mg of Cd, 900 mg of Cu, 150 mg of Ni and 6,000 mg of Zn/kg dry wt. of metals, which represented values 1 to 23 times greater than the ER-M levels (NOAA, 1991). At the end of a 150-day period, the fish were killed and, along with those which had alr

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