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Acute Toxicity and Behavioural Responses of Labeo rohita (Hamilton) to a Biopesticide “NEEM-ON”

Imtiyaz Ahmad Bhat1 * , Bilal Ahmad Bhat1 , Santsoh Vishwakarma1 , Alok Verma2 and Geeta Saxena1

1 Department of Zoology, Government Science and Commerce College Benazir, Bhopal, 462008 India

2 Department of Zoology, Government College Lateri, Vidisha, 464114 India

DOI: http://dx.doi.org/10.12944/CWE.7.1.26

The objective of this study was to determine the toxicity of the neem biopesticide azadirachtin (NEEM-ON, Brand name) on the freshwater fish ‘Labeo rohita’. Fishes were exposed to various concentrations of botanical insecticide azadirachtin for 96 h and the percent mortality was recorded. The 96h LC50 value determined by Finney’s Probit Analysis Method was found to be 42.66 ppm. Behavioural patterns were observed critically during the whole experiment. The test fish exhibited erratic swimming, increased surfacing, decreased rate of opercular movement, reduced agility and inability to maintain normal posture and balance with increasing exposure time.


Toxicity; Azadirachtin; NEEM-ON; Labeo Rohita; LC50; Behavioural Changes

Copy the following to cite this article:

Bhat IA, Bhat BA, Vishwakarma S, Verma A, Saxena G. Acute Toxicity and Behavioural Responses of Labeo rohita (Hamilton) to a Biopesticide “NEEM-ON”. Curr world Environ 2012;7(1):175-178 DOI:http://dx.doi.org/10.12944/CWE.7.1.26

Copy the following to cite this URL:

Bhat IA, Bhat BA, Vishwakarma S, Verma A, Saxena G. Acute Toxicity and Behavioural Responses of Labeo rohita (Hamilton) to a Biopesticide “NEEM-ON”. Curr world Environ 2012;7(1):175-178. Available from: http://www.cwejournal.org/?p=2079

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