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Int. J. Environ. Res. Public Health 2005, 2(3), 456-462; doi:10.3390/ijerph2005030010

Acute Effects of Hexavalent Chromium on Survival, Oxygen Consumption, Hematological Parameters and Some Biochemical Profiles of the Indian Major Carp, Labeo rohita

Environmental and Molecular Toxicology Lab, Centre for Environment, Institute of Science and Technology, Jawaharlal Nehru Technological University, Kukatpally, Hyderabad-500 072, Andhra Pradesh, India
Received: 20 May 2005 / Accepted: 7 October 2005 / Published: 30 December 2005
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Abstract

An attempt has been made in the present investigation to determine the acute toxicity of hexavalent chromium and its toxicological effects on survival, physiological, hematological and biochemical parameters of the widely consumed Indian major carp, Labeo rohita. Short-term acute toxicity tests were performed adopting renewal bioassay technique (USEPA, 1975) over a period of 96h, using different concentrations of potassium dichromate to the fish and the 96 h LC50 value was found to be 111.45 mg/l (Cr+6 as 39.40 mg/l). ANOVA results showed that the normal respiratory activity of the fish was significantly affected and there is a depression in the metabolic rate at the end of 24, 48, 72 and 96h exposure. The metal also induced significant decrease (p<0.001) in the hematological parameters of the fish like total erythrocyte count, hemoglobin percent and absolute value Mean cell hemoglobin (MCH) both at the end of 24h and 96h exposure indicating anemia. Appreciable decline in the biochemical profiles such as total glycogen, total lipids and total protein contents of the fish was also observed. However, the decrease in protein content was significant only at the end of 96h. This study reflects the extent of the toxic effects of hexavalent chromium and the metal induced cumulative deleterious effects at various functional levels in the widely consumed freshwater fish, Labeo rohita. View Full-Text
Keywords: Chromium+6; Labeo rohita; acute effects; oxygen consumption; hematological indices; biochemical profiles Chromium+6; Labeo rohita; acute effects; oxygen consumption; hematological indices; biochemical profiles
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Vutukuru, S.S. Acute Effects of Hexavalent Chromium on Survival, Oxygen Consumption, Hematological Parameters and Some Biochemical Profiles of the Indian Major Carp, Labeo rohita. Int. J. Environ. Res. Public Health 2005, 2, 456-462.

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