Volatiles from Maruca vitrata (Lepidoptera, Crambidae) host plants influence olfactory responses of the parasitoid Therophilus javanus (Hymenoptera, Braconidae, Agathidinae)

Aboubakar Souna Djibril, Bokono-Ganta Aimé Hippolyte, Dannon Elie Ayitondji, Imorou Nazyhatou, Agui Benjamin, Cusumano Antonino, Srinivasan Ramasamy, Pittendrigh Barry Robert, Volkoff Anne-Nathalie, Tamo Manuele. 2019. Volatiles from Maruca vitrata (Lepidoptera, Crambidae) host plants influence olfactory responses of the parasitoid Therophilus javanus (Hymenoptera, Braconidae, Agathidinae). Biological Control, 130 : 104-109.

Quartile : Q1, Sujet : ENTOMOLOGY / Quartile : Q2, Sujet : BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Psychologie-éthologie-ergonomie

Résumé : Plants damaged by herbivores are known to release odors attracting parasitoids. However, there is currently no information how leguminous plants damaged by the pod borer Maruca vitrata attract the exotic larval parasitoid Therophilus javanus, which was imported into Benin from the putative area of origin of the pod borer in tropical Asia for assessing its potential as a biological control agent. In this study, we used Y-tube olfactometer bioassays to investigate T. javanus response towards odors emitted by four M. vitrata-damaged host plants: cowpea Vigna unguiculata, the most important cultivated host, and the naturally occurring legumes Lonchocarpus sericeus, Sesbania rostrata and Tephrosia platycarpa. Olfactory attraction of T. javanus was influenced by the species of plant damaged by the pod borer. Moreover, odors released from M. vitrata-infested host plant organs (flowers and pods) were discriminated over non-infested organs in cowpea and T. platycarpa, respectively. These results are discussed in the context of the possible impact of M. vitrata host plants on T. javanus foraging activity and subsequent establishment in natural environments following experimental releases.

Mots-clés Agrovoc : Maruca vitrata, Vigna unguiculata, parasitoïde, agent de lutte biologique, plante hôte, relation hôte parasite, Maruca, Sesbania rostrata, lutte biologique, ravageur des plantes, niébé, Tephrosia, Lonchocarpus, Sesbania

Mots-clés géographiques Agrovoc : Bénin

Mots-clés libres : Biological Control, Natural enemy, Olfaction, Attraction, Cowpea, Host plants

Agences de financement hors UE : Ambassade de France à Cotonou, Consortium of International Agricultural Research Centers, Bill and Melinda Gates Foundation

Auteurs et affiliations

• Aboubakar Souna Djibril, Université de Montpellier (FRA)
• Bokono-Ganta Aimé Hippolyte, UAC (BEN)
• Dannon Elie Ayitondji, IITA (BEN)
• Imorou Nazyhatou, IITA (BEN)
• Agui Benjamin, IITA (BEN)
• Cusumano Antonino, INRA (FRA)
• Srinivasan Ramasamy, World Vegetable Center (TWN)
• Pittendrigh Barry Robert, MSU (USA)
• Volkoff Anne-Nathalie, INRA (FRA)
• Tamo Manuele, IITA (BEN) - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/608250/)

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