Journal of Chemical Ecology (2005) 31, 1023-1038

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Sandrine Gouinguené, John A. Pickett, Lester J. Wadhams, Michael A. Birkett and Ted C.J. Turlings (2005)
Antennal electrophysiological responses of three parasitic wasps to caterpillar-induced volatiles from maize (Zea mays mays), cotton (Gossypium herbaceum), and cowpea (Vigna unguiculata)
Journal of Chemical Ecology 31 (5), 1023-1038
Abstract: Many parasitic wasps are attracted to volatiles that are released by plants when attacked by potential hosts. The attractiveness of these semiochemicals from damaged plants has been demonstrated in many tritrophic systems, but the physiological mechanisms underlying the insect responses are poorly understood. We recorded the antennal perception by three parasitoids (Cotesia marginiventris, Microplitis rufiventris, and Campoletis sonorensis) to volatiles emitted by maize, cowpea, and cotton plants after attack by the common caterpillar pest Spodoptera littoralis. Gas chromatography-electroantennography (GC-EAG) recordings showed that wasps responded to many, but not all, of the compounds present at the physiologically relevant levels tested. Interestingly, some minor compounds, still unidentified, elicited strong responses from the wasps. These results indicate that wasps are able to detect many odorant compounds released by the plants. It remains to be determined how this information is processed and leads to the specific behavior of the parasitoids.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Sandrine Gouinguené, Ted C.J. Turlings, Michael A. Birkett, John A. Pickett

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
environment/habitat manipulation
general biology - morphology - evolution

Pest and/or beneficial records:

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

Spodoptera littoralis Maize/corn (Zea mays)
Spodoptera littoralis Cotton (Gossypium)
Spodoptera littoralis Cowpea and relatives (Vigna)
Campoletis sonorensis (parasitoid) Spodoptera littoralis
Cotesia marginiventris (parasitoid) Spodoptera littoralis
Microplitis rufiventris (parasitoid) Spodoptera littoralis