Response of mosquito (Anopheles arabiensis patton) adult to leaves hexane extract of Rehan (Ocimum basilicum L.)

Document Type : Original Article

Author

Plant protection Department, Faculty of Agriculture, Sinnar University, Sudan

Abstract

Laboratory experiments were conducted at the
National Malaria Centre, Sinnar State, Sudan, to test the efficacy of hexane
extracts of rehan leaves (Ocimum basilicum) used as paper impregnation,
against adult mosquito Anopheles arabiensis Patton. Repellency every 30
minutes, oviposition deterrency and adult mortality after 24 hours exposure
were calculated using an excito-repellency box recommended by the WHO. Results
indicated that rehan hexane extract at 10% concentration exhibited repellency
property to the tested mosquitoes up to 2 hours, and it was superior to the standard
insecticide. However all tested concentrations (1%, 5%, 10%) depicted
oviposition deterrency to the insect, but had a little insecticidal effect
compared to the standard.

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