Abstract
This investigation deals with the effect of paper mill effluent, on the histochemical components of the liver of Rasbora daniconius . The Paper mill effluent was collected directly from the 45 Km away from Aurangabad (MS) India. Histochemical studies on protein, lipid and glycogen contents of liver Rasbora daniconius showed a progressive decrease in staining intensity to Mercury bromophenol blue (Hg-BPB), Sudan black B and Bets’s Carmine at 30 days exposure when treated at sublethal concentrations (1.9% and 0.95%) of paper mill effluent. The magnitudes of these changes were dose dependent. This study, therefore, concludes that paper mill effluent creates metabolic crisis and impairment in fish liver. The depletion in level of protein, lipid and glycogen points towards exhaustion of cell- energy to meet high demand of fish in stressful condition.
Highlights
The rapid industrial growth throughout the world is common and in India, due to alarming rise in human population caused tremendous environmental pollution
Paper mill effluent consists variety of toxic components such as heavy metals, high Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), soda, legnin, chlorine, resin acid, dioxin, furan, etc. which might be responsible for causing metabolic impartment in the aquatic organisms which could even lead to their death
Total protein was found to exhibit a noticeable decrease in cytoplasm and nucleus of the liver cells of Rasbora daniconius, after exposure to 0.95% concentration of paper mill effluent for 30 days (Figure 1B)
Summary
The rapid industrial growth throughout the world is common and in India, due to alarming rise in human population caused tremendous environmental pollution. The aquatic environment is severely affected by different types of chemicals which are toxic to the aquatic organisms (Kopecka et al, 2006). The paper industry has been one of the major sources of aquatic pollution in India. Paper mill effluent consists variety of toxic components such as heavy metals, high Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), soda, legnin, chlorine, resin acid, dioxin, furan, etc. Which might be responsible for causing metabolic impartment in the aquatic organisms which could even lead to their death. Discharge of effluent into freshwater system deplete the dissolved oxygen content and, by interfering with respiratory metabolism cause heavy mortality (Quasim and Siddque, 1960; David and Ray, 1966; Venkataraman, 1966; Hingoroni et al, 1979). Pollution of aquatic by domestic and untreated or partially treated industrial effluent greatly contributes to massive kill of fish and other important aquatic biota (Kumari and RamKumar, 1977)
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