International Journal of Marine Science, 2017, Vol.7, No.29, 284-291
290
Clarias gariepinus
. Lesions and eroded epithelia surface that was revealed on the skin of groups exposed to higher
concentration (5 and 6 mg/L) do not allow for expression of melanin and it also changes the architecture of the
skin structure. High level of selenium could cause the exhaustion of mucous cell which might have led to the
erosion of the epithelia surface. This report is similar to the finding of Samson et al. (2015) following the exposure
of
Clarias gariepinus
to ethanol extract of
Adenium obesum
stem bark. Behavioural changes histological
alterations and have been observed in
Clarias gariepinus
juvenile exposed to selenium toxicity, these parameters
can be used as toxicological biomarker in a polluted environment. It is recommended that industries should treat
effluents before discharging it into the environment. Government institution concerned about environmental
protection should put necessary machinery in place to ensure compliance of industries to environmental laws and
regulations.
Acknowledgments
I would like to thank Ex-Director, Dr. Mane U.H., Center for Coastal and Marine Biodiversity of Dr. Babasaheb Ambedkar
Marathwada University, Ratnagiri for his invariable encouragement and scientific support in the analysis throughout the study period.
Thanks are due to, The Indian National Center for Ocean Information Services (INCOIS), Ministry of Earth Sciences, Government of
India offerred the valuable pecuniary support for this study through PFZ-Mission project to the first author as JRF-SRF.
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