Determination of Physico-Chemical and Microbiological Characterization of Recycled, Open and Eutrophicated Lake Water Grabs and Assessment of its Effects on A Vertebrate System Zebra Fish (Danio rerio)

 The study’s goal was to analyse Mallathahalli Lake’s physico-chemical and microbiological characteristics, as well as its impact on a zebra fish (Danio rerio) vertebrate model. Bangalore is the capital and largest city of the Indian state of Karnataka, and it is often regarded as the world’s fastest-growing information technology and biotechnology centre. In contrast, the city is subjected to continuous development through anthropogenic activities, as a result of which it has lost most of its wetlands, such as lakes, and the existing water bodies are exploited to the maximum extent possible, resulting in the spread of diseases, the loss of existing natural aquatic bodies, and the loss of ecosystem. Grab water samples were taken from three different sampling points of Mallathahalli Lake in Bangalore, India, and examined for several physical and chemical characteristics between December 2014 and February 2015; a microbiological evaluation of the lake was also done for the same period. The average values for physical characteristics such as pH and temperature for Recycled, Open, and Eutrophicated lake water were determined to be within the acceptable range. The average chemical parameter readings from the three sampling stations were determined to be within the World Health Organization’s (WHO) drinking water quality criteria. The DO, BOD, and COD values were observed to vary amongst the three test stations, implying that organic pollution was present. A bacteriological analysis of the water revealed substantial microbial activity, indicating that it was unfit for human consumption. The effect of water quality was demonstrated in zebra fish, a vertebrate model, via heart beat count and acetyl choline esterase activity. When compared to eutrophicated and open water systems, zebra fish analysis revealed that recycled water was of higher quality.

Author(s) Details:

Mathews P. Raj,
Department of Life Sciences, Jain University, Bangalore, India.

Nalini Satishchandra,
Sri Bhagawan Mahaveer Jain College, Jayanagar, Bangalore, India.

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