Entomological Science (2015) 18, 130-133

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Peter Michael James Brown, Brecht Ingels, Angela Wheatley, Emma L. Rhule, Patrick de Clercq, Thomas van Leeuwen and Alison Thomas (2015)
Intraguild predation by Harmonia axyridis (Coleoptera: Coccinellidae) on native insects in Europe: molecular detection from field samples
Entomological Science 18 (1), 130-133
Abstract: Intraguild predation (IGP) is a potential mechanism of negative effects on native species populations by invasive non-native species such as Harmonia axyridis. Molecular techniques (polymerase chain reaction) were used to probe for the presence of various insect (coccinellid, syrphid and chrysopid) prey DNA in the guts of 177 H. axyridis larvae field-collected in England, France, Germany, Slovakia and the Czech Republic in 2010. Three of the four target prey species were detected in the guts of H. axyridis at the following rates: Adalia decempunctata 9.6%, Adalia bipunctata 2.8% and Episyrphus balteatus 2.8%. IGP on Chrysoperla carnea was not detected. IGP detection of at least one target species was made in England, France, Slovakia and the Czech Republic, but not in Germany. These results strengthen the evidence that H. axyridis is a very generalist predator. Results are discussed in the context of their ecological significance.
(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): Peter Michael James Brown, Patrick De Clercq, Thomas Van Leeuwen

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

Pest and/or beneficial records:

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

Adalia bipunctata (predator)
Harmonia axyridis (predator) Czech Republic
Harmonia axyridis (predator) France
Harmonia axyridis (predator) Germany
Harmonia axyridis (predator) Slovakia
Harmonia axyridis (predator) United Kingdom
Episyrphus balteatus (predator)
Adalia decempunctata (predator)