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Nigam, S. K.
- Tissue Concentration of Organochlorines, Organophosphate and Plasma Cortisol in Captured Fish of Polluted River Gomti at Jaunpur during Post-Monsoon Season
Abstract Views :233 |
PDF Views:111
Authors
Affiliations
1 Ganpat Sahai PG College, Sultanpur-228001, IN
1 Ganpat Sahai PG College, Sultanpur-228001, IN
Source
Journal of Ecophysiology and Occupational Health, Vol 11, No 3-4 (2011), Pagination: 181-197Abstract
The objectives of the present investigation was to monitor the HCHs (isomers of hexachlorocyclohexane), DDTs (metabolites of dichlorodiphenyltrichloroethane), chlorpyrifos in tissue bioaccumulation and plasma levels of cortisol between the sampling sites of the unpolluted ponds of Gujartal, Jaunpur (reference site) and the polluted rivers the Gomti (Jaunpur) and the Ganga (Varanasi) as stress hormone of some edible catfishes during non-breeding season owing to industrialization. The insecticides were measured by the gas liquid chromatography (GLC) and plasma cortisol by Enzyme-Linked Immunosorbents Assay (ELISA). The results indicated that the presence of HCHs, DDTs and chlorpyrifos was much higher in the catfishes captured from the river Gomti than those of the river Ganga when compared to reference site. The plasma level of cortisol was low in the fishes captured from both the rivers. In conclusion, the fishes from polluted rivers showed high degree of contamination which caused stress and ultimately decreased the growth of edible fishes of riverine sources.Keywords
Insecticides, Bioaccumulation, Wild Catfishes, Cortisol, Stress Hormone, River Pollution.Full Text
- Organochlorines, Organophosphate Bioaccumulation and Reproductive Dysfunction in Fish Captured from Polluted River Gomti during Pre-Monsoon
Abstract Views :266 |
PDF Views:124
Authors
Affiliations
1 Ganpat Sahai Postgraduate College, Sultanpur-228001, IN
2 T. D. College, Jaunpur-222 002, IN
3 KNIPSS, Sultanpur-228 002, IN
1 Ganpat Sahai Postgraduate College, Sultanpur-228001, IN
2 T. D. College, Jaunpur-222 002, IN
3 KNIPSS, Sultanpur-228 002, IN
Source
Journal of Ecophysiology and Occupational Health, Vol 11, No 1-2 (2011), Pagination: 9-19Abstract
The present investigation was performed to monitor the HCHs (HCH isomers), DDTs (DDT and its metabolites), chlorpyrifos, plasma levels of estradiol-17β (E2) and gonadosomatic index (GSI) between the sampling sites of the non-polluted ponds of Gujartal, Jaunpur (reference site) and the polluted river Gomti (Jaunpur), affecting the reproductive physiology of some edible female catfish during pre-monsoon season. The HCHs, DDTs and chlorpyrifos were measured by gas liquid chromatography (GLC) and hormone by Enzyme- Linked Immunosorbent Assay (ELISA). The results indicated that the presence of HCHs, DDTs and chlorpyrifos was very high in the catfish captured from polluted river as compared from the conspecific fish captured from reference site. The GSI and E2 declined in female catfish of polluted site when compared to same species from reference site. Results have also indicated that catfish contained high bioaccumulation of HCHs, DDTs and chlorpyrifos which was beyond permissible limit as compared to the female catfish of the reference site. In conclusion, the fishes of river Gomti were highly polluted when compared with the fish of reference site as was evident from high levels of tissue bioaccumulation of HCHs, DDTs, chlorpyrifos and decreased levels of plasma E2 inhibiting the reproductive physiology of these species at receptor level. However, the levels exceeded maximum residue limits (MRL) as recommended by Codex, hence it is suggested that the fish containing pesticide residues beyond permissible limit should be avoided for the food purposes.Keywords
Catfish, Estradiol-17β, HCHs, DDTs, Chlorpyrifos Bioaccumulation, Reproduction, Steroidogenesis, River Pollution.Full Text