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Journal of Entomology
  Year: 2007 | Volume: 4 | Issue: 2 | Page No.: 113-120
DOI: 10.3923/je.2007.113.120
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Toxicity Experiments of the Saponic Extract of Cestrum Parqui (Solanaceae) on Some Insect Spices

Chaieb Ikbal, Ben Halima Mounia and Ben Hamouda Habib

The goal of present study is to undertake various experiments to explore this entomotoxic activity of this extract on various harmful insects in order to determine the best mode of application of these natural biopesticides. Several insects were tested in these experiments: Two phytophagous insects: desert locust (Schistocerca gregaria) and the cotton noctuid (Spodoptera littoralis), a stored products devastating insect (Tribolium confusum) and a health harmful hematophagous insect (Culex pipiens). Several biological toxicity assays were elaborate according to the species and the stage used. Experiments utilizing injection, grafting, forced ingestions, experiments of contact toxicity or toxicity by incorporation to the food substrate were employed. All these experiments enabled us to conclude that the application by contact of the CSE is generally ineffective because of the impossibility of passage of saponins (hydrophilic molecules) through the cuticle of the insect. The saponic extract must be introduced by the insect to express a toxicity from where the idea to design toxic soft foods based on extract saponic of Cestrum.
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  •    Neural Activity of a Locust Ganglion is Impaired by Limonene and Lovage (Levisticum officinale) Extracts
  •    Fate of Culex pipiens: Vector of Many Pathogenic Viruses
  •    Insecticidal Properties of Pyrethrin Formulations against Immature Stages of Phlebotomine Sand Flies (Diptera: Psychodidae)
  •    Studies of Larvicidal and Adulticidal Activities of Some Halophyte Plant Extracts Against Ceratitis capitata (Wiedemann)
How to cite this article:

Chaieb Ikbal, Ben Halima Mounia and Ben Hamouda Habib, 2007. Toxicity Experiments of the Saponic Extract of Cestrum Parqui (Solanaceae) on Some Insect Spices. Journal of Entomology, 4: 113-120.

DOI: 10.3923/je.2007.113.120






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