Toxicity and uptake of Kepone in marine unicellular algae

Abstract

Four species of marine unicellular algae were exposed to Kepone in laboratory bioassays. EC50 values after seven days’ growth, in mg/liter (ppm), were:Chlorococcum sp., 0.35;Dunaliella tertiolecta, 0.58;Nitzschia sp., 0.60;Thalassiosira pseudonana, 0.60. When exposed to 100 μg/liter (ppb) Kepone for 24 hr, residues associated with the algae, in mg/kg (ppm) wet weight, were:Chlorococcum sp., 80;D. tertiolecta, 23;Nitzschia sp., 41;T. pseudonana, 52.