Antennal Olfactory Responses of Apanteles Sp. (Hymenoptera:Braconidae) to Herbivore-Induced Plant Volatiles

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Abstract:

Antennal olfactory responses of the parasitoid, Apanteles sp. (Hymenoptera: Braconidae), to 13 host-induced volatile compounds were measured by electroantennogram (EAG) techniques. Dose response curves of EAG indicated that compared with males, females showed significantly stronger EAG responses to (Z)-3-hexenal, (E)-2-hexenal, (Z)-3-hexen-1-ol, (Z)-3-hexenyl acetate, (Z)-3-hexenyl-hexanoate and Benzyl nitrile. Among plant volatiles tested, the females were most sensitive to 100μM (Z)-3-hexen-1-ol, while the males were more sensitive to 100μM (E)-2-hexenal. The results show that the wasp is able to detect all compounds tested. We detected no sexual differences in the EAG responses to (E)-2-hexenyl hexanoate, (Z)-3-hexenyl benzoate, (Z)-3-hexenyl-2-methyl butyrate, (E)-β-ocimene, Linalool and DMNT.

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Advanced Materials Research (Volumes 393-395)

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604-607

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November 2011

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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