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Salinity and temperature effects on chronic toxicity of 2,4-dinitrophenol and 4-nitrophenol to sheepshead minnows (cyprinodon-variegatus)

Environmental Toxicology and Chemistry

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Abstract

Toxicity tests (28-d early-life-stage) were conducted to determine the effects of nine combinations of salinity (15, 20, 25 ppt) and temperature (22, 27, 32-degrees-c) on the toxicity of 2,4-dinitrophenol (2,4-dnp) and 4-nitrophenol (4-np) to sheepshead minnows (cyprinodon variegatus). The highest tested concentration having no observed effect (noec) on mortality and growth was derived weekly. The noecs at test termination indicated that the survival and growth of fish exposed to 2,4-dinitrophenol were not significantly affected by salinity, temperature, or the salinity temperature interaction. However, 28-d noecs of fish surviving from 4-nitrophenol exposures were significantly affected by temperature, but the highest value exceeded the lowest by only a factor of two. The overall data suggest that variations of salinity and temperature do not change the noec; only the exposure time required to attain the same noec is altered.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Salinity and temperature effects on chronic toxicity of 2,4-dinitrophenol and 4-nitrophenol to sheepshead minnows (cyprinodon-variegatus)
Series title:
Environmental Toxicology and Chemistry
Volume
13
Issue:
1
Year Published:
1994
Language:
English
Contributing office(s):
Upper Midwest Environmental Sciences Center
Description:
pp. 85-92
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Environmental Toxicology and Chemistry
First page:
85
Last page:
92
Number of Pages:
8