Manisha Mathuria and Anjana Bansal

Department of Zoology, D.S. College, Aligarh 202001 (India)


The aim of the present study was to evaluate the ichthyotoxic effects of aqueous extract of biopesticide plant Tephrosia purpurea on snakeheaded freshwater fish Channa punctatus. The survival number and survival percentage of fish were recorded after 24 hr, 48 hrs, 72 hrs and 96 hrs with the test concentrations of 1.5, 2.0, 2.5, 3.0, 3.5, 4.0 and 4.5 gm per litre. The TLm (LC50) value for aqueous extract of T. purpurea were 4.5 gL-1 in 72 hrs and 4 gL-1 in 96 hrs. Haematological parameters such as TEC was decreased by 5.63% and 14.86%; TLC was increased by 13.65% and 903.75%, HBC was decreased by 4.59% and 6.84% ESR was increased by 3.97% and 6.78% and specific gravity was decreased by 6.176% and 12.068% in 3 days and 7 days respectively

Key words : Tephrosia purpurea, Channa punctatus, Ichthyotoxic, Haematological, Aqueous extract.

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