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Copper Accumulation and Toxicity in Euphausia superba Dana

conference contribution
posted on 2023-05-23, 10:17 authored by Patti VirtuePatti Virtue, Ritz, D, Nicol, S
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.

History

Publication title

Proceedings of a Bioaccumulation Workshop: Assessment of the Distribution, Impacts and Bioaccumulation of Contaminants in Aquatic Environments

Editors

AG Miskiewicz

Pagination

205-211

ISBN

0730526119

Department/School

Institute for Marine and Antarctic Studies

Publisher

Water Board and Australian Marine Sciences Association Inc.

Place of publication

Sydney, Australia

Event title

Bioaccumulation Workshop: Assessment of the Distribution, Impacts and Bioaccumulation of Contaminants in Aquatic Environments

Event Venue

Sydney, Australia

Date of Event (Start Date)

1991-02-20

Date of Event (End Date)

1991-02-22

Rights statement

Copyright unknown

Repository Status

  • Restricted

Socio-economic Objectives

Biodiversity in Antarctic and Southern Ocean environments

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