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5441662 
Journal Article 
DDT Residues in the Fat of Crocodiles from Lake Kariba, Zimbabwe 
Phelps, RJ; Toet, M; Hutton, JM 
1989 
Residues of DDT and its metabolites were determined by gas chromatography in the body fat of 24 crocodiles from three regions along the northern and eastern shoreline of the eastern end of Lake Kariba. Total DDT levels varied between the three regions. Region 1 had lower levels of most residues while regions 2 and 3 had similar residue levels. The residue levels reflect the use of the pesticide in tsetse fly control operations and in agriculture. Considerable quantities of the insecticidally-active isomer of DDT were found in some samples, indicating current usage of DDT. The bulk of the residues were in the form of the metabolite DDE (2,2-bis-(p-chlorophenyl)-1 ,1-dichloroethylene). (Author 's abstract) 
Water Resources Abstracts; Path of pollutants; Pesticides; Insecticides; Crocodiles; Zimbabwe; Bioaccumulation; Ecological effects; Lake Kariba; Fate of pollutants; Gas chromatography