Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2005.751.753Culex pipiens]]>HusseinHamdy I.Al-RajhyDiefAlla Al-AssiryMohamed 5200585Four commercial pyrethroid–based insecticides, cypermethrin, fenvalerate,
Killer and Tyfon super 20 were tested as larvicides against a laboratory strain
of Culex pipiens and kerosene and Tween 80 1% in kerosene were tested
as larvicides and pupicides against the same population. LC50 values
of tested pyrethroids were 0.00029 ppm (Cypermethrin), 0.026 ppm (fenvalerate),
0.012 ppm (Killer) and 0.014 ppm (Tyfon super 20). The diagnostic concentrations
for cypermethrin and Tyfon Super 20 were 0.015 and 0.07 ppm, respectively. LD50
values for larvae were 33.42 and 13.11 L ha-1 and for pupae 69.74
and 36.1 L ha-1 for kerosene and T 80 in kerosene, respectively.
The results showed that the mixture of kerosene + T 80 could be used as an effective
larvicide and pupicide at much lower rates of application compared to kerosene
alone, which reduces the environmental pollution to a great extend.]]>Cornel, A.J., M.A. Stanich, R.D. McAbee and F.S. Mulligan,2002Ochlerotatus nigromaculis (Ludlow) in Central California. Pest Manage.]]>58791798Mostafa, A.A. and K.A.M. Allam,200131177186Bisset, J., M. Rodriguez, A. Soca, N. Pasteur and M. Raymond,199734244246Nielsen, L.C., F. Pasquier, J.F. Charles, G. Singer, B. Gaven and N. Pastteur,199734321327Wirth, M.C. and G.P. Georghiou,1996Culex pipiens from Cyperus.]]>12112118Kawakami, Y.,1989Culex pipiens molestus Forskal collected in Shinjuku-ku, Tokyo.]]>40217220Howard, L.O.,192816122Lampman, R., U. Eckenbach, D. Seigler and R. Novak,200016153157Floore, T.G., J.C. Dukes, J.B. Cuda, E.T. Schreiber and M.J. Greer,199814196199Abbott, W.S.,192518265267Xia, C.J., Z.T. Yan, Z. LiHua, D. YanDe and L. BaoLin et al.,1998Culex pipiens pallens to lambda-cyhalothrin and its cross-resistance to other insecticides.]]>5106111Yates, M.M. and G. Faget,1989Culex p. quinquifsciatus) in East Baton Rouge Parish, Louisiana.]]>421619Finney, D.J.,19713rd Edn.,pp: 318pp: 318