Electroantennographic Responses of Dryocosmus kuriphilus to Castanea sativa Leaf Volatiles
Author(s)
Germinara, Giacinto Salvatore
De Cristofaro, Antonio
Paparatti, Bruno
Stacchiotti, Manuela
Date Issued
2009
Type
Article
Abstract
Electroantennographic (EAG) responses from adults of the chestnut gall wasp, Dryocosmus kuriphilus were recorded on stimulation with a given dose of 22 volatile compounds previously identified from Castanea sativa leaves. All compounds elicited measurable EAGs. The largest EAG amplitudes were recorded in response to the oxygenated monoterpenes, α-terpineol and linalool, and the green leaf volatiles (GLVs), (E)-2-hexenal, (Z)-3-hexen-1-ol, (E)-3-hexen-1-ol and (E)-2-hexen-1-ol. EAGs to hydrocarbon monoterpenes and aromatics were generally weak. In preliminary Y-tube olfactometer bioassays the GLVs, hexyl acetate, (E)-2-hexen-1-ol and (E)-3-hexen-1-ol were attractive when individually tested compared to a solvent control suggesting their possible role in the D. kuriphilus host plant selection. Identification of host plant attractants is useful to develop semiochemically based pest control strategies of the chestnut gall wasp.
Citation
Germinara G.S., De Cristofaro A., Speranza S., Paparatti B., Stacchiotti M., Rotundo G. 2009. Electroantennographic responses of Dryocosmus kuriphilus to Castanea sativa leaf volatiles. Acta Horticulturae. ISHS 2009, 844:387-393 .
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Sponsor(s)
his research was partly supported by the Campania Region, Contribution number 28/08 to the research program: “Studio per il controllo ecocompatibile del Cinipide del castagno” and by the Lazio Region, research program “Convenzione triennale tra la Regione Lazio e il Dipartimento di Protezione delle Piante dell’Università della Tuscia di Viterbo per determinazioni, studi, sperimentazioni e consulenze entomologiche specialistiche”