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N. Saradhamani ¹, R. Saraswathi ¹, B. Dhanalakshmi ¹

Affiliations
1 Post Graduate and Research Department of Zoology, Kongunadu Arts and Science College (Autonomous), Coimbatore-641 029, Tamilnadu, IN

Abstract

Fish Labeo rohita were exposed to sublethal concentration of the detergent Commando (20 mg) for 24, 48, 72 and 96 hrs respectively. Biochemical analysis of cholesterol was carried out in liver, kidney, muscles and gills of the fish. The highest percent decrease of 35.1% in kidney, and minimum of 2% in muscles after 96 and 72 hrs exposures were noticed in cholesterol

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M. Manimegalai ¹, S. Binu Kumari ¹, K. Shanthi ¹, N. Saradhamani ¹

Affiliations
1 Department of Zoology, Kongunadu Arts and Science College, Coimbatore-641 029, T.N., IN

Abstract

Water quality plays an important role in the survival and distribution of aquatic organisms. It is dependent on physicochemical and nutrient parameters. Studies on the physicochemical characteristics of the Walayar reservoir were carried out for a period of one year from December 2006 to November 2006. The study was performed to determine the pollution status of the reservoir and to implement the measures of pollution control. The parameters analysed include the physical parameters such as temperature, suspended solids, dissolved solids and total solids. The chemical parameters were evaluated such as pH, DO, free CO₂, total alkalinity and nutrients such as calcium, magnesium, nitrate, phosphate, silicate, Iron, fluoride and chloride. The water quality of the Walayar reservoir was within the safe limits throughout the study period, which shows that this water is fit for utilization for irrigation, domestic purposes and also to support biodiversity.

Keywords

Limnological Studies, Walayar Reservoir Water, Quality, Nutrients.

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