Journal of Environmental Biology

Acute toxicity levels and ethological responses of Channa striatus to fertilizer industrial wastewater

 

A. Yadav*, S. Neraliya and A. Gopesh

Department of? Zoology, University of Allahabad, Allahabad - 211 002, India

(Received: October 30, 2004 ; Revised Received: September 08, 2005; Accepted: August 10, 2005)

Abstract: The present paper deals with the toxicity of fertilizer?s industrial wastewater on snake head fish Channa striatus (Bloch) previously named as Ophiocephalus sp., at different concentrations viz., 20, 40, 60, 80 and 100 percent on the behavioural changes and mortality. The exposed fish showed hyperactivity viz., jumping, operculum movement, distance travelling, somersaulting at higher concentration such as 60, 80, and 100 percent within 48 hr. At lower concentrations such as 20 and 40 percent exposed fish showed hyperactivities viz., linear movement and eye movement within 48 hr. The LC₅₀ values of industrial wastewater were also determined viz. 89, 75, 70 and 69 percent at different duration of exposure time i.e. 48, 72, 96 and 120 hr respectively. The obtained data revealed that LC₅₀ value decreased with increase of exposure.

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