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J Environ Biol ; 2001 Jan; 22(1): 19-21
Article in English | IMSEAR | ID: sea-113841

ABSTRACT

The toxic effect of Cypermethrin 10 EC (0.125, 0.25 and 0.5%) was estimated in the bodywall and digestive system of the larvae of Oryctes rhinoceros by HPLC after exposing them to different concentrations (0.125, 0.25 and 0.5%). Among the various concentrations used maximum residues were detected in bodywall (0.25%), whereas at higher concentration (0.5%) the residue detected was minimum. The treatment of Cypermethrin was found to be highly toxic upto 12 h of treatment, after which it declined reaching the minimum by 24 h. The residue of Cypermethrin could not be detected in digestive system. The experiments indicate the pesticide get concentrated in the bodywall to a maximum extent.


Subject(s)
Animals , Coleoptera/drug effects , Chromatography, High Pressure Liquid , Insecticides/analysis , Larva/drug effects , Lethal Dose 50 , Pyrethrins/analysis
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