TOXIC EFFECT OF Citrullus colocynthis(L.) Schrad FRUIT AQUEOUS EXTRACT AGAINST  LARVAE OF Culicidae

B MERABTI; I LEBOUZ; A ADAMOU; M. L OUAKID

B MERABTI Département de Sciences Biologiques, Faculté des Sciences de la Nature et de la vie, Université Kasdi Merbah Ouargla, Algérie. 2. Equipe désertification et climat, Laboratoire Mécanique, Université Amar Telidji Laghouat.
I LEBOUZ Département de Sciences Biologiques, Faculté des Sciences de la Nature et de la vie, Université Kasdi Merbah Ouargla, Algérie.
A ADAMOU Equipe désertification et climat, Laboratoire Mécanique, Université Amar Telidji Laghouat.
M. L OUAKID Département de Biologie, Faculté des Sciences, Université de Badji Mokhtar Annaba

Keywords: aqueous extract, Citrullus colocynthis, mosquito, toxicological parameters

Abstract

This study concerned the larvicidal activity of Citrullus colocynthisaqueous fruit extract on the two species of mosquitoes larvae (Culex pipiens andCuliseta longiareolata) breeding in the laboratory, in 2014 of the Laghouat region. The preliminary results showed that used extract has a high efficiency compared to natural substances of plant or microbial origin. This efficiency is expressed bythe calculated toxicologicalparameters which are successively LC50 and LC90, with 3.83 and 5.20 mg/L for Culex pipiensand 5.05 and 5.64 mg/L for Culiseta longiareolata.