INFLUENCE OF THE HYPERPARASITOID DENDROCERUS-CARPENTERI ON THE REPRODUCTION OF THE GRAIN APHID SITOBION-AVENAE

Authors
BOENISCH A PETERSEN G WYSS U
Citation
A. Boenisch et al., INFLUENCE OF THE HYPERPARASITOID DENDROCERUS-CARPENTERI ON THE REPRODUCTION OF THE GRAIN APHID SITOBION-AVENAE, Ecological entomology, 22(1), 1997, pp. 1-6
Citations number
17
Categorie Soggetti
Entomology
Journal title
Ecological entomology → ACNP
ISSN journal
03076946
Volume
22
Issue
1
Year of publication
1997
Pages
1 - 6
Database
ISI
SICI code
0307-6946(1997)22:1<1:IOTHDO>2.0.ZU;2-0
Abstract
1. Alate S. avenae (F.) reproduced earlier and produced more offspring in the vicinity of Dendrocerus carpenteri (Curtis) females than contr ol aphids without neighbouring hyperparasitoids. 2. This effect was ev ident 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, probabl y due to an unidentified emitted volatile sex pheromone.