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Main Title Acute Toxicity of Ammonia and Nitrite to Cutthroat Trout Fry.
Author Thurston, Robert V. ; Russo, Rosemarie C. ; Smith, Charlie E. ;
CORP Author Montana State Univ., Bozeman. Fisheries Bioassay Lab.;Environmental Research Lab.-Duluth, Monticello, MN.
Year Published 1981
Report Number EPA-R-800861; EPA-600/J-78-182;
Stock Number PB81-184731
Additional Subjects Toxicology ; Ammonia ; Nitrites ; Bioassay ; Fishes ; Concentration(Composition) ; Lethal dosage ; Tissues(Biology) ; Reprints ; Cutthroat trout ; Salmo clarki ; Toxic substances
Library Call Number Additional Info Location Last
NTIS  PB81-184731 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 10p
Abstract The toxicity of ammonia and of nitrite was tested on cutthroat trout (Salmo clarki) fry (1-3 g) for periods up to a month in eight laboratory flow-through bioassays. Median lethal concentration (LC50) values for ammonia (mg/liter un-ionized NH3) were 0.5-0.8 for 96 hours, and 0.3-0.6 for 36 days. Nitrite LC50 values (mg/liter NO2-N) were 0.5-0.6 for 96 hours, and 0.4 for 36 days. Tissues of fish exposed for 29 days to 0.34 mg/liter un-ionized ammonia evidenced degenerative changes in gills, kidneys, and livers. Cutthroat trout fry are comparable to rainbow trout (Salmo gairdneri) fry in their susceptibility to acute toxicity from aqueous ammonia and nitrite.
Supplementary Notes Prepared in cooperation with Fish and Wildlife Service, Bozeman, MT. Fish Cultural Development Center. Pub. in Transactions of the American Fisheries Society 107(2), p361-368 1978.
NTIS Title Notes Journal article.
Title Annotations Reprint: Acute Toxicity of Ammonia and Nitrite to Cutthroat Trout Fry.
PUB Date Free Form Apr 81
Category Codes 6T; 57Y
NTIS Prices PC A02/MF A01
Primary Description 600/03
Document Type NT
Cataloging Source NTIS/MT
Control Number 323796040
Origin NTIS
Type CAT