Toxicity and IGR effect of two new neem products against Aedes aegypti (PCSIR strain).
Crude extract and isolated compounds from neem, Azadirachta indica and Melia azedarach (Meliaceae) are being tested in various countries. The present study deals with the effect of two new compounds and their parent fraction from the fresh winter neem leaves, isolated by Siddiqui et. al., 1986. The LC50 of NFD is 0.58 ppm, nimocinolide 0.625 ppm and isonimocinolide 0.47 ppm. Abnormal larvae, pupae and intermediates were also found.
Naqvi
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Department of Zoology, University of Karachi, Karachi-75270, Pakistan.
Ahmed
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Mohammad
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