Ecological Entomology (2001) 26, 425-429

F.J.F. Van Veen, A. Rajkumar, C.B. Müller and H.C.J. Godfray (2001)
Increased reproduction by pea aphids in the presence of secondary parasitoids
Ecological Entomology 26 (4), 425-429
Abstract: 1. The influence of the presence of secondary parasitoids on aphid reproduction was tested in a field experiment.
2. Single pea aphids Acyrthosiphon pisum in clip cages on potted bean plants were exposed to a collection of secondary parasitoids enclosed within a small perforated bag. The aphids were exposed to volatile chemicals released by the secondary parasitoids but there was no physical contact.
3. The production of nymphs was recorded over an 11-day period. Aphids produced significantly more offspring in the presence of secondary parasitoids than in the absence of secondary parasitoids (36.9 vs. 31.2).
4. This is the second reported occurrence of this phenomenon, and the reasons for its occurrence and its consequences for aphid population and community ecology are discussed.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): F.J. Frank van Veen

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
environment/habitat manipulation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Acyrthosiphon pisum