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RECORD NUMBER: 23 OF 24

Main Title Toxicity of Ammonia to Early Life Stages of the Green Sunfish (Lepomis cyanellus).
Author McCormick, J. H. ; Broderius, S. J. ; Fiandt, J. T. ;
CORP Author Environmental Research Lab.-Duluth, MN.
Year Published 1984
Report Number EPA/600/J-84/155;
Stock Number PB85-148385
Additional Subjects Ammonia ; Toxicity ; Fresh water fishes ; Exposure ; Nitrogen organic compounds ; Concentration(Composition) ; pH ; Embryos ; Growth ; Reprints ; Lepomis cyanellus ; Green sunfish
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NTIS  PB85-148385 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 18p
Abstract
Toxicity of ammonia to early life stages of green sunfish Lepomis cyanellus was studied. One chronic and four acute exposure studies were conducted. During the chronic study green sunfish were exposed to a series of ammonia concentrations from the blastula stage through 40 days post-hatching. During the acute studies, juvenile green sunfish were exposed at four pH levels, 6.6, 7.2, 7.7 and 8.7, to derive 3-, 6-, 12-, 24-, 48-, 72-, and 96-h LC50 and EC50 concentrations of un-ionized (NH3) and total ammonia (NH3(-N). Pre-hatching embryological stages were found to be the most resistant stages studied.