Electrophysiological and Behavioral Responses of the Black-Banded Oak Borer, <Emphasis Type="BoldItalic">Coroebus florentinus</Emphasis>, to Conspecific and Host-Plant Volatiles |
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Authors: | Benjamin Fürstenau Gloria Rosell Angel Guerrero Carmen Quero |
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Affiliation: | (1) Department of Biological Chemistry and Molecular Modelling, IQAC (CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain;(2) Department of Pharmacology and Therapeutic Chemistry (Associated to CSIC), Faculty of Pharmacy, University of Barcelona, Joan XXIII 27-31, 08028 Barcelona, Spain; |
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Abstract: | Aspects of the chemical ecology of the black-banded oak borer, (BBOB) Coroebus florentinus (Coleoptera: Buprestidae), were studied. Odors produced by males and females were similar, both qualitatively and quantitatively.
Nonanal, decanal, and geranylacetone, identified in the headspace of both sexes, elicited strong electroantennographic responses
from male antennae, but not from female antennae. In dual-choice olfactometer experiments, a blend of these three compounds
was attractive to both sexes; males responded to decanal alone, while females responded to geranylacetone alone, suggesting
that these compounds are responsible for activity of the blend to the respective sexes. Antennae of both sexes responded electroantennographically
to the green leaf volatiles (E)-2-hexenal, (E)-2-hexenol, 1-hexanol, (Z)-3-hexenyl acetate, and n-hexyl acetate, all identified from the host plant Quercus suber. In behavioral experiments, only females were attracted to host-plant odors, and in tests with synthetic compounds, females
were attracted to (E)-2-hexenol, 1-hexanol, and (Z)-3-hexenyl acetate. It is likely that these compounds play a role in foraging and/or oviposition behavior of BBOB females. |
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