Toxic Impact of Zinc Salt (ZnSO4) on Some Haematological Parameters in a Freshwater Mud Eel Amphipnous cuchia (Hamilton, 1822)

DOI: 10.18805/ag.D-5156    | Article Id: D-5156 | Page : 247-251
Citation :- Toxic Impact of Zinc Salt (ZnSO4) on Some Haematological Parameters in a Freshwater Mud Eel Amphipnous cuchia (Hamilton, 1822).Agricultural Science Digest.2021.(41):247-251
Mridula Renu Sinha, Sapna Kumari
Address : Department of Zoology, Magadh Mahila College, Patna University, Patna-800 005, Bihar, India.
Submitted Date : 19-02-2020
Accepted Date : 8-07-2020


Background: Zinc (Zn), a heavy metal present in aquatic environment, has toxic effect on fishes. Present study was to assess toxicity of Zinc salt (ZnSO4) on total erythrocyte count (TEC), haemoglobin (Hb) content (g/dl) and haematocrit value (PCV%) of blood of freshwater mud eel Amphipnous cuchia.
Methods: Live fishes collected from ponds were acclimatized in laboratory. TEC, Hb content and PCV% of blood samples collected after 15, 30, 60 and 90 days, of control fishes and fishes exposed to low (0.5mg/l) and high (1mg/l) concentrations of ZnSO4, were determined by standard methods.
Result: TEC, Hb content and PCV% varied respectively from 2.48 x 106/mm3 to 2.70 x 106/mm3, 12.02 g/dl to 12.30 g/dl and 28.50 % to 33.60 % in fishes in low and from 2.36 x 106/mm3 to 2.60 x 106/mm3, 11.82 g/dl to 12.20 g/dl and 26.20 % to 31.50 % in fishes in high concentration of ZnSO4 solution, showing decreasing trend in all three blood parameters vis-a-vis their control values viz. TEC (2.74 x 106/mm3), Hb content (12.60 g/dl) and PCV% (34.50 %), decrease being more prominent in fishes exposed to high than those to low concentration. The depletion in these blood parameters may be attributed to the haemotoxic characteristics of Zinc (Zn). 


Amphipnous cuchia Erythrocyte Haemoglobin Haematocrit Zn salt


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