Comparative zinc and lead toxicity tests with Arctic marine invertebrates and implications for toxicant discharges

ABSTRACT Epontic and benthic amphipods ( Onisimus litoralis, Onisimus juveniles, Gammarus setosus, Anonyx nugax , and A. makarovi ) and a pelagic mysid ( Mysis oculatus ) were collected under ice at Little Cornwallis Island, Northwest Territories, Canada. They were exposed, on site, to dissolved zin...

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Bibliographic Details
Published in:Polar Record
Main Authors: Chapman, Peter M., McPherson, Cathy
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1993
Subjects:
General Earth and Planetary Sciences
Ecology
Geography, Planning and Development
Arctic
Northwest Territories
Canada
Cornwallis
Little Cornwallis Island
Cornwallis Island
Polar Record
Online Access:http://dx.doi.org/10.1017/s0032247400023202
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247400023202
Description
Summary:ABSTRACT Epontic and benthic amphipods ( Onisimus litoralis, Onisimus juveniles, Gammarus setosus, Anonyx nugax , and A. makarovi ) and a pelagic mysid ( Mysis oculatus ) were collected under ice at Little Cornwallis Island, Northwest Territories, Canada. They were exposed, on site, to dissolved zinc and lead to determine lethal concentrations (LC50s). Incidental information was obtained on salinity and temperature tolerance. Subsequent testing of a temperate amphipod and oyster larvae exposed to the two metals provided comparative data to augment a literature review. The Arctic invertebrates were surprisingly insensitive under all test conditions. The implications for Arctic developments, particularly those involving near-shore, point-source discharges, are discussed and recommendations are made for effectively expanding a presently depauperate Arctic marine toxicity database.

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