Record Details

Impact of enviornmental stress on certain fishes of River Periyar

Shodhganga@INFLIBNET

View Archive Info
 
 
Field Value
 
Title Impact of enviornmental stress on certain fishes of River Periyar
-
 
Contributor Thomas, A P
 
Subject Environmental science
Periyar river
water quality
pollution stress
brachysoma
sophore
haematological changes
mortality
 
Description The present study has been taken up to highlight the deterioration of the water quality of Periyar river, especially the lower industrial belt area, and its stress impact on two selected fishes, Puntius sophore (Hamilton) and Horabagrus brachysoma (Gunther). Water quality studies in five selected sites of Periyar river were carried out during the premonsoon, monsoon and post-monsoon seasons for two years (2002-2004). The stress effect on the haematology of the two fishes exposed to different concentrations of the polluted water from Site-V for various durations were evaluated. Physico-chemical analysis of water of Periyar river revealed that the Site-V (Eloor industrial belt area) showed conspicuous significant variations in the different parameters analyzed. It was also noted that water quality found more deteriorated during pre-monsoon and postmonsoon compared to monsoon season. Conspicuous haematological changes were observed in the experimental fishes exposed to different concentrations of the polluted water from Site-V for various durations. The changes were found to be species specific. In all the parameters studied it was found that P. sophore is more vulnerable than H. brachysoma, which exhibited lower mortality rate. The studies revealed the acute toxicity of the polluted water in the Eloor region. H. brachysoma was found more resistant to the pollutants than P. sophore indicating the differential adaptive abilities of the fishes. The season wise effect of water pollution induced on the fishes illustrated the pollution stress scenario of the river. The information generated in the present investigation, with the two fishes as indicators of pollution stress, reflects the possible impact of pollution on the multitude of life forms in the river and the ecosystem.
Bibliography p.113-151, Appendices 152p.
 
Date 2013-02-28T10:24:26Z
2013-02-28T10:24:26Z
2013-02-28
n.d.
n.d.
n.d.
 
Type Ph.D.
 
Identifier http://hdl.handle.net/10603/7193
 
Language English
 
Relation -
 
Rights university
 
Format 152p.
-
None
 
Coverage Environmental science
 
Publisher Kottayam
Mahatma Gandhi University
School of Environmental Sciences
 
Source INFLIBNET