Article (Scientific journals)
Aggregation behavior of Harmonia axyridis under non-wintering conditions
Durieux, Delphine; Fassotte, Bérénice; Deneubourg, Jean-Louis et al.
2015In Insect Science
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Keywords :
group effect; invasive species; multicolored Asian ladybeetle
Abstract :
[en] The invasive multicolored Asian ladybeetle, Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae), aggregates inside dwellings during winter to avoid cold weather. This adaptive behavior disturbs homeowners, because of the large numbers of individuals that aggregate, which induces allergic reactions. The migratory flight patterns of this species have been well documented, with individuals preferentially moving toward prominent and high color contrast elements. However, the factors involved in the selection of aggregation sites by this species have yet to be elucidated. Here, we evaluated the influence of (i) the density of individuals and (ii) the type of available shelters on decisions by H. axyridis to settle and aggregate under shelters. A dual choice bioassay conducted in the laboratory demonstrated the presence of mutual attraction to conspecifics. We also found that individuals preferentially settled under red covered shelters compared to transparent shelters, and that the type of shelter outweighed the effect of social interactions among conspecifics. Moreover, this experiment was performed under non-wintering conditions, providing the first evidence that aggregative behavior in this species can also occur under those specific conditions.
Disciplines :
Entomology & pest control
Author, co-author :
Durieux, Delphine ;  Université de Liège - ULiège > Chimie et bio-industries > Laboratoire Qualité et sécurité des produits agro-aliment.
Fassotte, Bérénice ;  Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive
Deneubourg, Jean-Louis
Brostaux, Yves  ;  Université de Liège - ULiège > Sciences agronomiques > Statistique, Inform. et Mathém. appliquée à la bioingénierie
Vandereycken, Axel ;  Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive
Joie, Emilie ;  Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive
Haubruge, Eric  ;  Université de Liège - ULiège > Premier Vice-Recteur
Verheggen, François  ;  Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive
Language :
English
Title :
Aggregation behavior of Harmonia axyridis under non-wintering conditions
Publication date :
2015
Journal title :
Insect Science
ISSN :
1672-9609
eISSN :
1744-7917
Publisher :
Blackwell Publishing
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 26 February 2015

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