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Srivastava, Neera
- Impact of Chronic Zinc Exposure on Biochemical Composition of the Ovary in Channa punctatus (Bloch)
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1 Fish Biology Laboratory, Centre for Advanced Studies, Department of Zoology, University of Rajasthan, Jaipur-302004, IN
1 Fish Biology Laboratory, Centre for Advanced Studies, Department of Zoology, University of Rajasthan, Jaipur-302004, IN
Source
Journal of Environment and Sociobiology, Vol 6, No 2 (2009), Pagination: 145-150Abstract
Biochemical response has been evaluated in the ovary of Channa punctatus (Bloch) after 135-day exposure to sub-lethal concentrations (0.1 and 0.2 mg/1) of zinc. Changes in glycogen, cholesterol, total proteins and total lipids were estimated. All these parameters showed significant depletion. Results are directly proportional to dose and duration of the experiment. Results indicate that exposure to zinc for prolonged periods may also reduce fecundity of fish, thereby limiting the numerical size of the succeeding generations.Keywords
Channa punctatus, Zinc, Ovary, Biochemistry.- Evaluation of Haematological Parameters and Endosulfan Accumulation in Blood of Channa punctatus Followed by Subsequent Recovery
Abstract Views :230 |
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Authors
Affiliations
1 Department of Zoology, Centre for Advanced Studies, University of Rajasthan, Jaipur-302 004, IN
1 Department of Zoology, Centre for Advanced Studies, University of Rajasthan, Jaipur-302 004, IN
Source
Journal of Environment and Sociobiology, Vol 6, No 2 (2009), Pagination: 159-166Abstract
Present study has been undertaken to investigate alterations in some haematological parameters along with endosulfan accumulation in blood of Channa punctatus after sub-chronic exposure to endosulfan. A statistically significant decline is observed in RBC, Hct, Hb and MCHC content in all the treated groups, reflecting an anaemic condition of the fish. Results indicate significant elevation in WBC, MCV, MCH, blood glucose and endosulfan content in blood, indicating a stress condition. Post exposure recovery was noted on depuration for another fortnight. Mild recovery was noted in haematological parameters and blood glucose along with slow elimination of endosulfan.Keywords
Accumulation, Haematology, Channa punctatus, Endosulfan, Recovery.- Bioaccumulatiion and Elimination of Endosulfan in Muscle, Gills and Blood of Channa punctatus
Abstract Views :288 |
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Authors
Affiliations
1 Department of Zoology, Centre for Advanced Studies, University of Rajasthan, Jaipur-302 004, IN
1 Department of Zoology, Centre for Advanced Studies, University of Rajasthan, Jaipur-302 004, IN
Source
Journal of Environment and Sociobiology, Vol 6, No 1 (2009), Pagination: 13-20Abstract
After exposure of Channa punctatus to sub-lethal concentrations of endosulfan for 120 hrs, residues of endosulfan were estimated quantitatively in muscle, gills and blood. Maximum accumulation of endosulfan was observed in the gills. Treated fishes were subsequently transferred to endosulfan free freshwater for another 120 hrs in order to study the recovery response of these fishes. During recovery phase, slow and steady elimination of endosulfan residue was observed in both treated groups, showing non-significant removal in muscle and highly significant removal in gills and blood. Results reveal that muscle, gills and blood of C. punctatus have the ability to bioaccumulate endosulfan even at low concentrations and short exposure. This may in turn lead to various degenerative processes which will influence physiology and nutritive value of the fish.Keywords
Bioaccumulation, Endosulfan, Recovery, Channa punctatus.- Effects of Sublethal Concentrations of Zinc on Bioaccumulation and Architectural Alterations in the Liver of Fish Channa punctatus
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Authors
Affiliations
1 Fish Biology Laboratory, Center for Advanced Studies, Department of Zoology, University of Rajasthan, Jaipur - 302004, IN
1 Fish Biology Laboratory, Center for Advanced Studies, Department of Zoology, University of Rajasthan, Jaipur - 302004, IN
Source
Journal of Environment and Sociobiology, Vol 5, No 2 (2008), Pagination: 135-140Abstract
Indiscriminate use of heavy metals has elevated the risk of contamination of the aquatic habitat. Present study has, therefore, been undertaken to investigate the alterations in bioaccumulation and histopathology of the liver in a freshwater teleost Channa punctatus. On exposure to three sublethal concentrations of zinc (10 mg/l, 15 mg/l and 25 mg/l) for 15 days, statistically significant increase in zinc concentration was noted in the liver of all treated groups. Simultaneously severe histopathological changes were also noted in the liver. Both bioaccumulation and histopathological changes were dose and duration dependent.Keywords
Zinc, Channa punctatus, Bioaccumulation, Histopathology.- Bioaccumulation of Zinc in the Gills and Intestine of Freshwater Fish Channa punctatus, after Chronic Exposure to Zinc
Abstract Views :262 |
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Authors
Affiliations
1 Fish Biology Laboratory, Department of Zoology, University of Rajasthan, Jaipur (Rajasthan), IN
1 Fish Biology Laboratory, Department of Zoology, University of Rajasthan, Jaipur (Rajasthan), IN