Toxicity of trace element and salinity mixtures to striped bass (Morone saxatilis) and Daphnia magna

Environmental Toxicology and Chemistry
By: , and 

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Abstract

Acute toxicity tests with reconstituted water were conducted to investigate the relationship between water hardness, salinity, and a mixture of trace elements found in irrigation drain waters entering Stillwater Wildlife Management Area (SWMA), near Fallon, Nevada. The SWMA has been the site of many fish kills in recent years, and previous toxicity studies indicated that one drain water, Pintail Bay, was acutely toxic to organisms acclimated or cultured in fresh water or salt water. This toxicity could reflect both the ionic composition of this saline water and the presence of trace elements. The lowest water salinity tested with Daphnia magna was near the upper salinity tolerance of these organisms; therefore, we were unable to differentiate between the toxic effects of ion composition and those of trace elements. In toxicity tests conducted with striped bass (Morone saxatilis), we found that the extent to which salinity was lethal to striped bass depended on the ion composition of that salinity. Survival of striped bass increased as hardness increased. In addition, a trace element mixture was toxic to striped bass, even though the concentrations of individual elements were below expected acutely lethal concentrations. Although salinity is an important water quality characteristic, the ionic composition of the water must be considered when one assesses the hazard of irrigation drain waters to aquatic organisms.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Toxicity of trace element and salinity mixtures to striped bass (Morone saxatilis) and Daphnia magna
Series title Environmental Toxicology and Chemistry
DOI 10.1002/etc.5620110409
Volume 11
Issue 4
Year Published 1992
Language English
Publisher Wiley
Contributing office(s) Columbia Environmental Research Center
Description 8 p.
First page 513
Last page 520
Country United States
State Nevada
Other Geospatial Stillwater Wildlife Management Area