Salinity and temperature effects on chronic toxicity of 2,4-dinitrophenol and 4-nitrophenol to sheepshead minnows (cyprinodon-variegatus)
Dates
Publication Date
1994
Citation
Salinity and temperature effects on chronic toxicity of 2,4-dinitrophenol and 4-nitrophenol to sheepshead minnows (cyprinodon-variegatus); 1994; Article; Journal; Environmental Toxicology and Chemistry; Linton, T. K. ; Mayer, F. L. ; Simon, T. L. ; Malone, J. A. ; Marking, L. L.
Summary
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 [...]
Summary
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.
