Vol. 11, Issue 12 (2022)

Author(s):
Divya M Ramchandani, Chirag M Modi, Urvesh D Patel, Harshad B Patel, Bhulesh V Paida, Pavan M Patel and Harsh R Patel

Abstract:
Increasing the concentration of silver in the environment affects the health of ecosystem including human and animal health. The present study was carried out to evaluate the effect of silver nitrate on behavior of zebrafish following exposure to various concentrations for 28 days. Total 30 zebrafish were divided into 5 groups. Animals of four toxicity groups were exposed to silver nitrate at various concentrations (6.25, 12.5, 25 and 50 µg/L). Mortality in animals exposed to silver nitrate was not found. Fish exposed to a higher concentration exhibited altered motility with slow speed of swimming, freezing and operculum movement followed by fast movement. In adult zebrafish, higher silver nitrate concentrations (25 and 50 µg/L) caused neurobehavioural changes such as hypolocomotion, anxiety-like behaviour, diminished social preferences, and decreased social recognition.