Résultat de la recherche
12 recherche sur le mot-clé
'biological control' 
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R. Hufbauer | 2002
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G. Gowling ; H. VanEmden | 1994Cage experiments, in which the population increase of Metopolophium dirhodum was measured either in the absence or presence of the parasitoid Aphidius rhopalosiphi, showed reductions of peak populations in the presence of the parasitoid of 30% o[...]
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E. Evans ; S. England | 1996The population dynamics of insect pests in agroecosystems may often be linked to those of other phytophagous species through the foraging activities of natural enemies; these indirect interactions provide both opportunities and challenges for bi[...]
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J. Rosenheim ; L. Wilhoit ; P. Goodell ; E. Grafton-Cardwell ; T. Leigh | 1997
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W. Kauffman ; S. Laroche | 1994Because leaves of many Gramineae infested by the Russian wheat aphid, Diuraphis noxia, do not unfurl, some predators (and other natural enemies) do not reach this aphid. We quantified the search strategies of five exotic aphidophagous coccinelli[...]
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S. England ; E. Evans | 1997The ability of parasitoids to attack their hosts may be influenced by the availability of adult food sources such as homopteran honeydew. To test this hypothesis for the wasp Bathyplectes curculionis (Thomson), a parasitoid of the alfalfa weevil[...]
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R. Hufbauer | 2002
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J. Vandenheuvel ; H. Hummelen ; M. Verbeek ; A. Dullemans ; F. Vanderwilk | 1997A new virus was isolated from the pea aphid, Acyrthosiphon pisum, and tentatively named Acyrthosiphon pisum virus (APV). The isometric virus particles were approximately 31 nm in diameter and contained a single-stranded RNA molecule of approxima[...]
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H. Harada ; H. Ishikawa | 1997
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Determining the phenological and diel concurrence of potentially overlapping predator guilds in a given system provides a gauge of the potential prevalence and importance of synergistic prey suppression. The phenology of pea, aphids (Acyrthosiph[...]
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D. Richards ; E. Evans | 1998Aphidophagous lady beetles feed on a variety of pre! in addition to preferred aphids. These alternative feuds ma!: serve only to maintain the predator but do not permit immature growth or adult reproduction. We tested whether larvae of the alfal[...]
