Scale of murrel: A non-invasive approach to monitor heavy metals in freshwater

  • Satyam Dwivedi Research scholar Department of Zoology University of Delhi Delhi-7
  • Neeta Sehgal Professor Department of Zoology University of Delhi Delhi-7


Indian freshwater murrel Channa punctata were maintained in a floating cage in river Yamuna at Canal Colony, Kalindi Kunj, Delhi during the summer, monsoon and winter seasons in a year. Incidence of heavy metals (Pb, Hg, Fe, Cu, As) on fish scales were investigated by employing Scanning Electron Microscopy (SEM) and Energy Disruptive X-Ray (EDX) analyser. Fish scales revealed altered elemental composition and uprooted lepidonts. The present study indicated that structural integrity of the scale is compromised under stress of heavy metals and pollutants. 

Author Biographies

Satyam Dwivedi, Research scholar Department of Zoology University of Delhi Delhi-7

Research scholar
Department of Zoology
University of Delhi

Neeta Sehgal, Professor Department of Zoology University of Delhi Delhi-7

Department of Zoology
University of Delhi


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How to Cite
Dwivedi, S. and Sehgal, N. 2017. Scale of murrel: A non-invasive approach to monitor heavy metals in freshwater. Journal of Biological Sciences and Medicine. 3, 3 (Sep. 2017), 15-23.
Research Articles