Bulletin of Insectology (2008) 61, 283-289

Olfa Boussaada, Monia Ben Halima Kamel, Samia Ammar, Dalila Haouas, Zine Mighri and Ahmed Noureddine Helal (2008)
Insecticidal activity of some Asteraceae plant extracts against Tribolium confusum
Bulletin of Insectology 61 (2), 283-289
Abstract: Sixteen aromatic plant extracts from three species belonging to the Asteraceae family, were obtained by using organic solvents of increasing polarity. They were tested for insect growth inhibition, contact toxicity and antifeedant activity against adults and larvae of confused flour beetle Tribolium confusum du Val (Coleoptera Tenebrionidae). Discs made of wheat were incorporated with a single dose of 1% of different extracts. The antifeedant effect, larval growth inhibition and mortality were evaluated in multiplechoice tests. Responses varied with plant-derived material extract, stage of insect and exposure time. Larval growth inhibition was significantly induced by methanolic and ethyl acetate extracts of Mantisalca duriaei Briq. et Cavill. and petroleum ether, chloroformic and methanolic extracts of Rhaponticum acaule DC. Antifeedant properties were detected in methanolic extracts of M. duriaei and R. acaule, petroleum ether and chloroformic extract of R. acaule and ethyl acetate extract of M. duriaei. Scorzonera undulata Vahl seemed to be, however, attractive to the flour beetle. For all extracts, mortality was higher for larvae than adults. It reached respectively 83%, 77% by using petroleum ether and methanol extracts of R. acaule. These results suggest that M. duriaei and R. acaule may be used in grain storage against insect pests.
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Database assignments for author(s): Monia Ben Halima-Kamel, Dalila Haouas

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Tribolium confusum