Journal of Entomology1812-56701812-5689Asian Network for Scientific Information10.3923/je.2007.444.450Anopheles gambiae, Giles 1902]]>Njan NlogaA.M. SaotoingP. TchouankeuJ.C. MessiJ. 6200746The essential oils extracted of six plants have been tested on adults of Anopheles gambiae (Diptera: Culicidae) in view to determine their insecticide effect. It is about Ocimum canum, Laggera pterodonta, Plectrancthus glandulosus, Eucalyptus camaldulensis, Hyptis spicigera and Pittosporum viridiflorum. These oils have been diluted in the hexane to different concentrations (5, 10, 15, 20, 30, 40 and 50 mg of active matter by m2 of screen) in order to expose anopheles in the OMS-cone. The introduction of 20 anopheleses in cones permits to note that alone two plants Hyptis spicigera and Pittosporum viridiflorum presented a weak insecticide activity. Except P. viridiflorum, the five other plants presented of lethals concentrations 50 (LC50) after 24 h of exhibition. Thus, we record for H. spicigera and efficient
concentration Laggera pterodonta to 50 mg m‾2. On the other hand Ocimum canum is efficient to the concentration 40 mg m‾2. Lethal concentrations 50 (LC50) of O. canum and Plectrancthus glandulosus are, respectively 11.95 and 12.5 mg m‾2 after 24 h of exhibition.These essential oils also possess the best lethal h 50 (LH50) with lengths of exhibition of 6 h 36 min 16 sec and 8 h 34 min 12 sec, respectively for O. canum and of P. glandulosus.]]>Adebayo, T.A., A.A. Gbolade and J.J. Olaifa,199937476Chittihunsa, T. and N. Samngamnim,19991999pp: 7077El Hag, E.A., A.H. El Nadi and A.A. Zaitoon,1999Culex pipiens larvae (Diptera: Culicidae).]]>13388392El Hag, E.A., A. El Rahman, H. El Nadi and A.A. Zaitoon,2001Culex pipiens mosquitoes.]]>78199201Fekam, B.F.,20042004Gbolade, A.A., A.O. Oyedele, M.B. Sosan, F.B. Adewayin and O.L. Soyel,2000Ocimum sp.]]>2414251432Jirovetz, L., G. Buchbauer, M.B. Ngassoum and P.M. Mapongmetsem,2002Annona senegalensis from Cameroon.]]>26205209Keita, S.M., C. Vincent, J.P. Schmit, J.T. Arnason and A. Belanger,2002Ocimum basillicum L. and Ocimum gratissimum L. applied as an insecticidal fumigant and powder to control Callobruchus maculatus (Fab.) Coleoptera: Bruchidae.]]>37339349Khan, A.A., H.I. Maibach, W.G. Strauss and W.R. Fenley,19695599102Magesa, S.M., T.J. Wilkes, A.E.P. Muzava, K.J. Njunwa and J. Myamba et al.,1991498796Mark, S.F., M.D. Radin and F.D. John,20023471318Ngassom, M.B., L. Jirovetz, G. Buchbauer and P.M. Mapongmetsem,2002Anona senegalensis from Cameroon using GC-FID-MS and Olfactometry.]]>26/NR5205209Njan-Nloga, A.M.,1994Anopheles moucheti at Ebogo-Cameroon.]]>1994Njunwa, K.J., J.D. Lines, S.M. Magesa, A. E.P. Muzava and T.J Wilkes et al.,19914997108Prajapati, V., A.K. Tripathi, K.K. Aggarwal and S.P.S. Khanuja,2005Anophles stephensi, Aedes aegypti and Culex quinquefasciatus.]]>9617491757Rao, M.S., G. Pratibh and G.R. Korwar,2000Helicoverpa armigera.]]>8236238Rodhain, F. and Perez,1985pp: 458pp: 458Skinner, W.A. and H.L. Johnson,19801980pp: 277-305pp: 277-305Strauss, W.G., H.I. Maibach and A.A. Khan,196817461464Tripathi, A.K., V. Prajapati, N. Verma, J.R. Bahl, R.P. Bansal and S.P.S. Khanuja,2002Curcuma longa (var.ch.-66) on three species of stored-products beetles (Coleoptera).]]>95183189Tripathi, A.K., V. Prajapati, K.K. Aggarwal, S.P.S. Khanuja and S. Kuman,2000Artemisia annua to certain stored-product beetles.]]>934347Tedonkeng, P.E., L. Tapondjou, G. Tenekeu and F. Tedonkeng,2002Ageratum houstonianum Mill on dwarf cheep's ticks of Guinea (Rhipicephalus appendiculatus) in West Cameroo.]]>20109112