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Copper Accumulation and Toxicity in Euphausia superba Dana


Virtue, P and Ritz, D and Nicol, S, Copper Accumulation and Toxicity in Euphausia superba Dana, Proceedings of a Bioaccumulation Workshop: Assessment of the Distribution, Impacts and Bioaccumulation of Contaminants in Aquatic Environments, 20-22 February, 1991, Sydney, Australia, pp. 205-211. ISBN 0730526119 (1992) [Refereed Conference Paper]

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Several aspects of copper toxicity to Euphausia superba were examined. Baseline copper concentrations in Euphausia superba caught and frozen in the Antarctic was found to be in the range of 55.2-82.6 j.lg g-1, dry wt. Total body copper concentrations were measured in animals exposed to various ambient copper concentrations. Euphausia superba were able to regulate copper to a constant level beyond which copper became lethal at estimated ambient bioavailable copper ion concentrations of 1.4 X 10-8M at an LT50 of 3.25 days. Krill died when the total body concentration reached approximately 250-300 j.lg g-1 dry wt. Survival rates were found to be directly related to free copper ion concentrations which were determined by altering the free cupric ion activity using the metal ion complexing agent, NT A.

Item Details

Item Type:Refereed Conference Paper
Keywords:copper toxicity, krill
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and estuarine ecology (incl. marine ichthyology)
Objective Division:Environmental Management
Objective Group:Management of Antarctic and Southern Ocean environments
Objective Field:Biodiversity in Antarctic and Southern Ocean environments
UTAS Author:Virtue, P (Associate Professor Patti Virtue)
UTAS Author:Ritz, D (Associate Professor David Ritz)
ID Code:102526
Year Published:1992
Deposited By:IMAS Research and Education Centre
Deposited On:2015-08-26
Last Modified:2015-09-02
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