Ecological Entomology (1997) 22, 1-6

Anke Boenisch, Gert Petersen and Urs Wyss (1997)
Influence of the hyperparasitoid Dendrocerus carpenteri on the reproduction of the grain aphid Sitobion avenae
Ecological Entomology 22 (1), 1-6
Abstract: 1.Alate S. avenae (F.) reproduced earlier and produced more offspring in the vicinity of Dendrocerus carpenteri (Curtis) females than control aphids without neighbouring hyperparasitoids.
2. This effect was evident only during the first 6 days of the aphid's reproduction period and did not affect the physiological condition of the aphids or their offspring.
3. Virgin hyperparasitoid females had a stronger influence on the reproduction rate of the aphids than did mated females, probably due to an unidentified emitted volatile sex pheromone.
(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): Urs Wyss

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
environment - cropping system/rotation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Sitobion avenae