Sublethal effects of heavy metal contaminated sediment on midge larvae (Chironomus tentans) |
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| Authors: | R Wentsel A McIntosh G Atchison |
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| Institution: | (1) Bionucleonics Department, School of Pharmacy and Pharmacal Sciences, Purdue University, 47907 West Lafayette, Indiana |
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| Abstract: | Chironomid larvae were maintained for 17 days in sediments with various heavy metal levels. The control sediment had levels of 0.6 ppm cadmium, 17 ppm chromium and 77 ppm zinc. The most contaminated sediment had levels of 1030 ppm cadmium, 1640 ppm chromium, and 17300 ppm zinc.The mean length and weight of the larvae from the control sediment were 1.83 cm and 2.86 mg. The mean length and weight of larvae from the most contaminated sediment were 0.82 cm and 0.20 mg. A linear relationship was found for the square root of length versus metal levels in the sediment. |
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| Keywords: | Heavy metals cadmium zinc chromium Chironomids benthic macroinvertebrates toxicity Lake |
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