||Salinity and Temperature Effects on Chronic Toxicity of 2,4-Dinitrophenol and 4-Nitrophenol to Sheepshead Minnows ('Cyprinodon variegatus').
Linton, T. K. ;
Mayer, F. L. ;
Simon, T. L. ;
Malone, J. A. ;
Marking., L. L. ;
||Environmental Research Lab., Gulf Breeze, FL. ;University of West Florida, Pensacola. Dept. of Biology. ;McMaster Univ., Hamilton (Ontario). ;National Fisheries Research Center, La Crosse, WI.
Water pollution effects(Animals) ;
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||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, 32C) 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.
||Pub. in Environmental Toxicology and Chemistry, v13 p85-92 1994. Prepared in cooperation with University of West Florida, Pensacola. Dept. of Biology., McMaster Univ., Hamilton (Ontario)., and National Fisheries Research Center, La Crosse, WI.
|NTIS Title Notes
||Reprint: Salinity and Temperature Effects on Chronic Toxicity of 2,4-Dinitrophenol and 4-Nitrophenol to Sheepshead Minnows ('Cyprinodon variegatus').
||PC A02/MF A01