التأثير الحيوي لمستخلص أربع نباتات في أطوار بعوض الكيولكس Culex pipiens (Culicidae)‎ pallens و اليرقات غير المستهدفة للهاموش Chironomus ninevah (Chironomidae)‎

الملخص EN

Bioinsecticidal activity of Tilia chordate Miller, Euphorbia peplus L., Solanum carolinense L.

and Hammada salicornica (Bunge) Botsch (=Haloxylon salicornicum) were tested against various stages of Culex pipiens Pallens and Chironomus ninevah Ahmad 4th larvae.

For 12 and 24 hrs.

exposure times, Lc50 were (16.0 , 7.5 ppm), (14.0 , 13.0 ppm), (18.0, 26.0 ppm) and (26.0, 21.0 ppm) caused by T.

chordate, E.

peplus, H.

salicornica and S.

carolinense respectively.

Pupal mortality were 56 , 41 , 36 and 28% for T.

chordata, H.

salicornica, S.

carolinense, and E.

peplus at the later (80 ppm) applied concentration.

Only, T.

chordata, and H.

salicornica, extracts were active on adult exclusion with mortality 41 and 19% at 80 ppm concentration.

On the other hand, its revealed that significant differences between Lc50 of the targeted C.

pipiens larvae and that of the non-targeted C.

ninevah larvae with 10, 4 and 2 folds of the applied extracts ; T.

chordata, S.

carolinense and H.

salicornica.