论文信息 - Toxicity of ammonia and nitrite to the Gila trout

Toxicity of ammonia and nitrite to the Gila trout

Abstract A pilot study was conducted to determine the acute resistance of Gila trout Oncorhynchus gilae to ammonia (NH3) and nitrite (NO− 2). All fish survived exposure to up to 4.5 mg/L total NH3-N (0.36 mg/L un-ionized NH3-N; pH 8.5, 15°C) for 96 h. The 96-h median lethal concentration was 5.86 mg/L total NH3-N (0.47 mg/L un-ionized NH3-N). Gila trout exposed to nitrite for 96 h died when exposed to 10 mg/L or more NO− 2-N and 3 mg/L environmental chloride. Increasing the environmental chloride concentration increased survival.

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