Foraging behaviour of an egg parasitoid exploiting plant volatiles induced by pentatomids : The role of adaxial and abaxial leaf surfaces
| Autor: | Eric Conti, Gianandrea Salerno, Roberto Romani, Salvatore Guarino, Letizia Martorana, Francesca Frati, Ezio Peri, Antonino Cusumano, Stefano Colazza |
|---|---|
| Přispěvatelé: | Frati, F., Cusumano, A., Conti, E., Colazza, S., Peri, E., Guarino, S., Martorana, L., Romani, R., Salerno, G. |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
0301 basic medicine media_common.quotation_subject Leaf surface Oviposition lcsh:Medicine Insect Plant Science Chemical ecology 01 natural sciences General Biochemistry Genetics and Molecular Biology Parasitoid 03 medical and health sciences Botany Plant defense against herbivory Walking activity Laboratory of Entomology Trissolcus basalis Nezara viridula Neuroscience (all) Medicine (all) Biochemistry Genetics and Molecular Biology (all) Agricultural and Biological Sciences (all) media_common Herbivore biology Host (biology) General Neuroscience lcsh:R fungi food and beverages Trissolcus basali General Medicine biology.organism_classification Laboratorium voor Entomologie 010602 entomology Settore AGR/11 - Entomologia Generale E Applicata 030104 developmental biology Olfactometer EPS General Agricultural and Biological Sciences Entomology 017-4020 |
| Zdroj: | PeerJ PeerJ, Vol 5, p e3326 (2017) PeerJ 2017 (2017) 5 PeerJ, 2017(5) |
| ISSN: | 2167-8359 |
| DOI: | 10.7717/peerj.3326 |
| Popis: | Several phases of herbivorous insect attack including feeding and oviposition are known to induce plant defenses. Plants emit volatiles induced by herbivores to recruit insect parasitoids as an indirect defense strategy. So far, volatiles induced by herbivore walking and their putative role in the foraging behavior of egg parasitoids have not been investigated. In this paper we studied the response of the egg parasitoid Trissolcus basalis toward volatiles emitted by Vicia faba plants as consequence of the walking activity of the host Nezara viridula. Olfactometer bioassays were carried out to evaluate wasp responses to plants in which the abaxial or the adaxial surfaces were subjected to walking or/and oviposition. Results showed that host female walking on the abaxial but not on the adaxial surface caused a repellence effect in T. basalis 24 h after plant treatment. The emission of active volatiles also occurred when the leaf was turned upside-down, indicating a specificity of stress localization. This specificity was supported by the results, which showed that oviposition combined with feeding elicit the induction of plant volatiles, attracting the parasitoid, when the attack occurred on the abaxial surface. Analyses of plant volatile blends showed significant differences between the treatments. |
| Databáze: | OpenAIRE |
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