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Influence of multiple water-quality characteristics on copper toxicity to fathead minnows (Pimephales promelas)

Environmental Toxicology and Chemistry

By:
, , , and
DOI: 10.1897/03-574.1

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Abstract

Water quality influences the bioavailability and toxicity of copper to aquatic organisms. Understanding the relationships between water-quality parameters and copper toxicity may facilitate the development of site-specific criteria for water quality and result in better protection of aquatic biota. Many studies have examined the influence of a single water-quality parameter on copper toxicity, but the interactions of several characteristics have not been well studied in low-hardness water. The goal of the present research was to examine the interactions among water-quality characteristics and their effects on copper toxicity to larval fathead minnows (Pimephales promelas). The effects of dissolved organic carbon (DOC) concentration, DOC source, pH, and hardness on acute copper toxicity were determined using a complete factorially designed experiment. Hardness, pH, DOC, and interaction of pH and DOC all significantly affected copper toxicity. A predictive model based on these data described 88% of the variability in copper toxicity. This model also explained 58% of the variability in copper toxicity for an independent dataset of South Carolina (USA) waters. The biotic ligand model underpredicted the acute copper toxicity to fathead minnows when compared with observed values.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Influence of multiple water-quality characteristics on copper toxicity to fathead minnows (Pimephales promelas)
Series title:
Environmental Toxicology and Chemistry
DOI:
10.1897/03-574.1
Volume
23
Issue:
12
Year Published:
2004
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Environmental Toxicology and Chemistry
First page:
2900
Last page:
2905