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Effects of ammonia, nitrite and nitrate on hemoglobin content and oxygen consumption of freshwater fish, Cyprinus carpio (Linnaeus).
J Environ Biol ; 2007 Jan; 28(1): 45-7
Article in English | IMSEAR | ID: sea-113378
ABSTRACT
Lethal effects of nitrogenous compounds ammonia, nitrite and nitrate on freshwater fish Cyprinus carpio were studied and the static LC50 values obtained for these 3 toxicants for 24 hr were 0.80 ppb, 171.36 ppm; 1075.10 ppm and continuous flowthrough LC50 values for 24 hr were 0.72 ppb, 154.31 ppm; 967.63 ppm respectively. The fish were exposed to lethal concentrations to study the changes in hematological parameters and the rate of oxygen consumption. During the period of exposure general decline in the content of hemoglobin was observed. Methemoglobin content increased in case of nitrite exposure consequently the hemoglobin levels decreased drastically. It is also observed that rate of oxygen consumption decreased progressively with the increase of toxicant concentration and duration of the exposure.
Subject(s)
Full text: Available Index: IMSEAR (South-East Asia) Main subject: Oxygen Consumption / Water Pollutants, Chemical / Hemoglobins / Methemoglobin / Carps / Ammonia / Lethal Dose 50 / Animals / Nitrates / Nitrites Language: English Journal: J Environ Biol Year: 2007 Type: Article

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Full text: Available Index: IMSEAR (South-East Asia) Main subject: Oxygen Consumption / Water Pollutants, Chemical / Hemoglobins / Methemoglobin / Carps / Ammonia / Lethal Dose 50 / Animals / Nitrates / Nitrites Language: English Journal: J Environ Biol Year: 2007 Type: Article