Accumulation and metabolism of DDT and its metabolites by Tetrahymena

Tetrahymena pyriformis was exposed to 1 ppm DDT and its metabolites for 10 days. There was an initial, rapid adsorptive phase in which the compounds were accumulated in a decreasing order of DDD, DDE, o,p-DDT, DDMU and p,p'-DDT . This was followed by a slow absorption which continued until equi...

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Bibliographic Details
Published in:Water, air, and soil pollution air, and soil pollution, 1982-01, Vol.18 (4), p.441-447
Main Authors: Agarwal, H.C, Saxena, D.M, Lal, R
Format: Article
Language:English
Subjects:
agrochemicals
animal ecology
animals
aquatic habitat
aquatic organisms
environmental degradation
Freshwater
pesticides
pollution
Tetrahymena pyriformis
waste management
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Summary:Tetrahymena pyriformis was exposed to 1 ppm DDT and its metabolites for 10 days. There was an initial, rapid adsorptive phase in which the compounds were accumulated in a decreasing order of DDD, DDE, o,p-DDT, DDMU and p,p'-DDT . This was followed by a slow absorption which continued until equilibrium was reached. In T. pyriformis , DDT was metabolized to DDE, o,p'-DDT and DDMU. DDD was metabolized to DDMU but o,p'-DDT , DDE and DDMU were not metabolized. Elimination of DDT and its metabolites, after 4 days exposure to 1 ppm, was also biphasic with approximately 50 per cent being eliminated in the first 3 hours and a further 35 per cent in the following 21 hours.
ISSN:0049-6979
1573-2932
DOI:10.1007/BF02426051