Abstract
The influence of temperature, food and hexavalent chromium on mortality and developmental rate was determined for the J 2-larvae of the marine bacterivorous nematode Monhystera disjuncta. When mortality was considered, temperature significantly influenced chromium toxicity ( P≤0·001), whereas food did not effect chromium toxicity. When development inhibition is used as the toxicity criterion, both temperature (0·001≤ P≤0·01) and food ( P≤0·001) influenced chromium toxicity. The interaction between temperature and food is not significant for both criteria studied. It is concluded that environmental variables (abiotic and biotic) influence chromium toxicity and that this has to be taken into account in hazard assessment studies.
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