Intraguild predation involving Harmonia axyridis: a review of current knowledge and future perspectives.

Pell, Judith K.; Baverstock, Jason; Roy, Helen E. ORCID:; Ware, Remy L.; Majerus, Michael E. N.. 2008 Intraguild predation involving Harmonia axyridis: a review of current knowledge and future perspectives. BioControl, 53 (1). 147-168.

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As an effective generalist predator of aphids and other hemipteran pests H. axyridis has been a successful biological control agent. However, the very functional traits that have contributed to its success in this regard also implicate it as an intraguild predator that poses a significant risk not only to the diversity of other natural enemies of Hemiptera (and their associated ecosystem services), but to biodiversity more widely. In this paper we will specifically review the existing data on intraguild predation involving H. axyridis, and consider the strength and symmetry of such interactions both within its native guild and within exotic guilds where it has established as an invasive alien. We will use these studies to interpret the observed population declines in predator diversity in the field, predict species at risk in regions not yet invaded and consider implications for resulting ecosystem services. We will also indicate gaps in our knowledge that require further study in order to identify opportunities for mitigation.

Item Type: Publication - Article
Digital Object Identifier (DOI):
Programmes: CEH Programmes pre-2009 publications > Biodiversity > BD01 Conservation and Restoration of Biodiversity
CEH Programmes pre-2009 publications > Biodiversity > BD02 An Integrated Framework for the Sustainable Management of Biological Introductions - Alien Species and Emerging Diseases
UKCEH and CEH Sections/Science Areas: Pywell
ISSN: 1386-6141
Additional Information. Not used in RCUK Gateway to Research.: The original publication is available at
Additional Keywords: Coccinellidae, Harmonia axyridis, Aphidophagous guild, Intraguild predation, Predators, Parasitoids, Pathogens, Ecosystem services
NORA Subject Terms: Agriculture and Soil Science
Ecology and Environment
Date made live: 01 Apr 2008 11:29 +0 (UTC)

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