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Main Title Salinity and Temperature Effects on Chronic Toxicity of 2,4-Dinitrophenol and 4-Nitrophenol to Sheepshead Minnows ('Cyprinodon variegatus').
Author Linton, T. K. ; Mayer, F. L. ; Simon, T. L. ; Malone, J. A. ; Marking., L. L. ;
CORP Author 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.
Publisher c1994
Year Published 1994
Report Number EPA/600/J-94/127;
Stock Number PB94-158714
Additional Subjects Salinity ; Temperature ; Nitrophenols ; Water pollution effects(Animals) ; Toxicity ; Growth ; Mortality ; Reprint ; Cyprinodon variegatus
Library Call Number Additional Info Location Last
NTIS  PB94-158714 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 8p
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.