Physico-chemical characteristics and impact of aquatic pollutants on the vital organs of a freshwater fish Glossogobius giuris.

Venkataraman, G. V. and Sandhya Rani, P. N. and Raju, N. S. and Girisha, S. T. and Raghavendra, V. B. (2010) Physico-chemical characteristics and impact of aquatic pollutants on the vital organs of a freshwater fish Glossogobius giuris. Research Journal of Environmental Toxicology, 4 (2, Cop). pp. 77-91. ISSN 1819-3420

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Environmental pollutants such as pesticides, industrial wastes and other org. wastes pose serious risks to many aquatic organisms. Accordingly a great deal of previous research has characterized physiol. mechanisms of toxicity in animals exposed to contaminants. In contrast, effects of aquatic contaminants on fish pathol. and physicochem. characteristics of aquatic system are less frequently studied. To investigate present position of the dam water physico-chem. characteristics and histopathol. changes in fish was undertaken. Anal. exhibited richness in nitrogen, phosphates, in addn. to high value of total dissolved solids, total alky., DO, BOD and org. matter. The histol. damage caused to the fish Glossogobius giuris by various aquatic pollutants present in polluted water body. A microscopic study exhibits the Swelling Gill Lamellae (SGL) and fusion of secondary lamellae (FL) of gill filaments and edematous sepn. of basement membrane from epithelial lining of the Secondary Lamellae (SL) was also noticed. Cellular hypertrophy followed by vacuolization in Thyroid Follicles (TF), irregular pluripotent haemoblasts (hae) in haematopoietic tissue and vacuolated erythrocytes (RBC's), neutrophils and monocytes in the peripheral blood. The results obtained suggests that the gills, thyroid, haematopoietic tissue and peripheral blood cells were structurally altered in polluted water body fishes. Such alterations could affect vital physiol. functions such as respiration, osmotic and ionic regulation of the gills, storage and secretion in thyroid follicles, haemopoesis of the kidney and oxygen carrying capacity, Hb content in erythrocytes and loss of immune mechanism, phagocytosis in leukocytes, which inturn could ultimately affect the survival and growth of G. giuris. Thus all possible remedial measures should be adopted to prevent the occurrence of contamination in the aquatic environment. [on SciFinder(R)]

Item Type: Article
Additional Information: Unmapped bibliographic data: PY - 2010/// [EPrints field already has value set] M3 - 10.3923/rjet.2007.1.15 [Field not mapped to EPrints] JA - Res. J. Environ. Toxicol. [Field not mapped to EPrints]
Uncontrolled Keywords: Glossogobius environmental impact dam water pollution quality monitoring
Subjects: Physical Sciences > Environmental Science
Divisions: PG Campuses > Manasagangotri, Mysore > Environmental Science
Depositing User: Kodandarama
Date Deposited: 13 Jun 2013 04:39
Last Modified: 18 Dec 2015 07:15

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