Steering biological control through agroecosystem diversification: the case of Harmonia axyridis

Coccinellidae; conservation biological control; Harlequin ladybird; intraguild predation; andscape management; mixed cropping; multi-colored Asian lady beetle

Abstract :

[en] Increasing plant diversity in crop production systems has the potential to enhance natural enemies of insect pestsand improve biological control. The ladybird beetle Harmonia axyridis Pallas (Coleoptera: Coccinellidae) is a predatorof multiple pests, mainly aphids. Native to Northeast Asia, this species was intentionally introduced into many countriesduring the early and mid-1900s. Its subsequent spread in Europe, Africa, and the Americas caused major concerns due toits competition with, and (intraguild) predation on, resident biota. As an eradication of H. axyridis in its invaded range isimpossible, efforts could be made to exploit its role as a biological control agent in agricultural settings and mitigate itsnegative impact on biodiversity. We outline how on- and off-farm measures affect H. axyridis abundance and behaviour,both in its native and invasive ranges. Crop and non-crop diversification can provide shelter and nutritional resources forresident predators, reduce predation on non-target biota and thereby sustain biodiversity in farmland ecosystems. Drawingupon insights into the ecology of H. axyridis, we describe how annual crop successions and polycultures, companionplanting, non-crop habitats, and insectary or banker plants can strengthen its role as a biological control agent in differentsettings. We conclude by discussing whether increasing plant diversity can potentially steer H. axyridis predation awayfrom non-target biota. As such, our study provides guidance for conservation and biological control science and practice inH. axyridis native and invaded farmland ecosystems.

Precision for document type :

Review article

Disciplines :

Entomology & pest control

Author, co-author :

Hatt, Séverin ^✱

Tan, Xiaoling ^✱

Ben Fekih, Ibtissem ; Université de Liège - ULiège > Département GxABT > Entomologie, Phytopathologie et Productions Innovantes (EPPI)

Francis, Frédéric ; Université de Liège - ULiège > TERRA Research Centre > Entomologie, Phytopathologie et Productions Innovantes (EPPI)

Noël, Grégoire ; Université de Liège - ULiège > TERRA Research Centre > Entomologie, Phytopathologie et Productions Innovantes (EPPI)

Osawa, Naoya

Pan, Yunfei

Segers, Arnaud ; Université de Liège - ULiège > Département GxABT > Microbial technologies

Wang, Su

Wyckhuys, Kris A. G.

Yang, Long

Xu, Qingxuan

^✱ These authors have contributed equally to this work.

Language :

English

Title :

Steering biological control through agroecosystem diversification: the case of Harmonia axyridis

Publication date :

31 March 2026

Journal title :

Entomologia Generalis

ISSN :

0171-8177

eISSN :

2363-7102

Publisher :

Schweizerbart

Volume :

Issue :

Pages :

5-20

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://www.schweizerbart.de/content/papers/download/108163

Available on ORBi :

since 13 April 2026

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