Chemical stimuli in host-habitat location by Leptopilina hetrotoma (Thomson) (Hymenoptera: Eucoilidae) a parasite of Drosophila

M. Dicke, J.C. van Lenteren, G.J.F. Boskamp, E. van Dongen-van Leeuwen

Research output: Contribution to journalArticleAcademicpeer-review

35 Citations (Scopus)

Abstract

Chemical stimuli play an important role in the process of searching for a host habitat by parasitic wasps. Volatile compounds originating from host habitats and/or hosts are the cues that enable such a location.Leptopilina heterotoma, a larval parasite ofDrosophila, is attracted to the food of its host, baker''s yeast. Analysis of the fermentation products of baker''s yeast, using a mass spectrometer, and olfactometer studies indicate that three fermentation products of this yeast, the main component of the host habitat in our laboratory, attractL. heterotoma: ethanol (5%), ethyl acetate (10–2, 10–3%), and acetaldehyde (1%). A combination of these three compounds, however, cannot compete with baker''s yeast in attracting the parasites. Thus other factors, such as different compounds, concentrations, and/or combinations, also, play a role and remain to be tested.Leptopilina heterotoma does not use host-related olfactory cues in long-distance habitat location as it cannot distinguish between host habitat and host habitat with hosts.
Original languageEnglish
Pages (from-to)695-712
JournalJournal of Chemical Ecology
Volume10
DOIs
Publication statusPublished - 1984

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