Toxic effects on domestic sewage of zooplankton

S.N. Gajbhiye, V.R. Nair, B.N. Desai


The toxic effects of raw domestic sewage on different groups of zooplankton was tested in the laboratory for evaluating acute toxicity. 24 hr., LC-50 values for larvae of stomatopods, gastropods and chaetognaths (2-7% concentration) indicated that they are very sensitive to the sewage. Copepods, Lucifer and decapod larvae (20-30% concentration.) were moderately tolerant. Acetes, medusae, ctenophores and mysids were the most resistant groups (42-49% concentration)


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