Side effects of [i]Bacillus thuringiensis[/i] var. kurstaki on the hymenopterous parasitic wasp [i]Trichogramma chilonis[/i] - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Environmental Science and Pollution Research Année : 2016

Side effects of [i]Bacillus thuringiensis[/i] var. kurstaki on the hymenopterous parasitic wasp [i]Trichogramma chilonis[/i]

Résumé

Most of the detrimental effects of using conventional insecticides to control crop pests are now well identified and are nowadays major arguments for replacing such compounds by the use of biological control agents. In this respect, the bacterium Bacillus thuringiensis var. kurstaki and Trichogramma (Hymenoptera: Trichogrammatidae) parasitic wasp species are both effective against lepidopterous pests and can actually be used concomitantly. In this work, we studied the potential side effects of B. thuringiensis var. kurstaki on Trichogramma chilonis females. We first evidenced an acute toxicity of B. thuringiensis on T. chilonis. Then, after ingestion of B. thuringiensis at sublethal doses, we focused on life history traits of T. chilonis such as longevity, reproductive success and the time spent on host eggs patches. The reproductive success of T. chilonis was not modified by B. thuringiensis while a significant effect was observed on longevity and the time spent on host eggs patches. The physiological and ecological meanings of the results obtained are discussed.
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Dates et versions

hal-01290894 , version 1 (18-03-2016)

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Marcel Amichot, Christine Curty, Olivia Magliano, Armel Gallet, Eric Wajnberg. Side effects of [i]Bacillus thuringiensis[/i] var. kurstaki on the hymenopterous parasitic wasp [i]Trichogramma chilonis[/i]. Environmental Science and Pollution Research, 2016, 23 (4), pp.3097-3103. ⟨10.1007/s11356-015-5830-7⟩. ⟨hal-01290894⟩
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