International Journal of Fisheries and Aquatic Studies
2019, Vol. 7, Issue 3, Part B
Scanning electron microscopic investigation on the scales of grass carp, Ctenopharyngodon idellus (Cuvier and Valenciennes) exposed to lead nitrate
Author(s): Smriti Batoye, Rajinder Jindal and Sakshi Verma
Abstract: The aquatic ecosystem is the most affected ecosystem due to contamination of heavy metals. The present investigation was undertaken to assess the toxicity of lead nitrate on the scales of
Ctenopharyngodon idellus. Acute toxicity test was conducted to evaluate 96 h LC50 of lead nitrate to
C. idellus and was found to be 33.27 mg/L. For Chronic bioassay studies, two sublethal concentrations (i.e. 6.65 mg/L and 11.09 mg/L) of 96 h LC50 of lead nitrate were selected for 45 days. Fish exposed to sublethal concentrations of the toxicant showed hyper excitability, erratic swimming, jerky movements and tendency to escape from aquaria, increase in the rate of air gulps, fin and opercular movements. Loosening of scales, excess secretion of mucus and depigmentation were the morphological alterations. The ultrastructural changes on the scales of C. idellus were observed using scanning electron microscope (SEM). The scales showed various degrees of deformity to the circuli and tubercles on exposure to lead nitrate.
Pages: 93-98 | 801 Views 113 DownloadsDownload Full Article: Click Here
How to cite this article:
Smriti Batoye, Rajinder Jindal, Sakshi Verma. Scanning electron microscopic investigation on the scales of grass carp, Ctenopharyngodon idellus (Cuvier and Valenciennes) exposed to lead nitrate. Int J Fish Aquat Stud 2019;7(3):93-98.
