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Plant chemistry and aphid parasitoids (Hymenoptera: Braconidae): Imprinting and memory

Key words. Braconidae, aphid parasitoid, Aphidius colemani, imprinting, memory, secondary compounds

Abstract. Emerging parasitoids of aphids encounter secondary plant chemistry from cues left by the mother parasitoid at oviposition and from the plant-feeding of the host aphid. In practice, however, it is secondary plant chemistry on the surface of the aphid mummy which influences parasitoid olfactory behaviour. Offspring of Aphidius colemani reared on Myzus persicae on artificial diet did not distinguish between the odours of bean and cabbage, but showed a clear preference for cabbage odour if sinigrin had been painted on the back of the mummy. Similarly Aphidius rhopalosiphi reared on ...

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