Increased Toxicity of Ammonia to Rainbow Trout (Salmo gairdneri) Resulting from Reduced Concentrations of Dissolved Oxygen
1981 ◽
Vol 38
(8)
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pp. 983-988
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Keyword(s):
The median lethal concentration (LC50) of aqueous ammonia at reduced dissolved oxygen (D.O.) concentrations was tested in acute toxicity tests with rainbow trout (Salmo gairdneri) fingerlings. Fifteen 96-h flow-through tests were conducted over the D.O. range 2.6–8.6 mg/L, the former concentration being the lowest at which control fish survived. There was a positive linear correlation between LC50 (milligrams per litre un-ionized ammonia) and D.O. over the entire D.O. range tested; ammonia toxicity increased as D.O. decreased. Ammonia LC50 values were also computed for 12, 24, 48, and 72 h; the correlation with D.O. was greater the shorter the time period.Key words: ammonia toxicity, dissolved oxygen, rainbow trout, Salmo gairdneri
1974 ◽
Vol 31
(10)
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pp. 1653-1655
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Keyword(s):
1981 ◽
Vol 5
(3)
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pp. 316-328
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1976 ◽
Vol 11
(1)
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pp. 34-45
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Keyword(s):
2001 ◽
Vol 67
(5)
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pp. 680-687
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1988 ◽
Vol 45
(11)
◽
pp. 2003-2009
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Keyword(s):
2001 ◽
Vol 67
(5)
◽
pp. 0680-0687
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Keyword(s):
1985 ◽
Vol 42
(4)
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pp. 841-844
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Keyword(s):