Article (Scientific journals)
Identification of flower functional traits affecting abundance of generalist predators in perennial multiple species wildflower strips
Hatt, Séverin; Uyttenbroeck, Roel; Lopes, Thomas et al.
2019In Arthropod-Plant Interactions, 13
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Keywords :
Conservation biological control; Coccinellidae; Syrphidae; Chrysopidae; Community-weighted mean; Ultra-violet pattern; Corolla morphology
Abstract :
[en] In agricultural fields, wildflower strips can be sown to enhance conservation biological control of insect pests. However, issues remain regarding the composition of flower mixtures to effectively attract and support large communities of natural enemies. Trait-based approaches are promising for this purpose. In the present study, conducted in an agricultural field of Belgium in 2014 and 2015, 15 flower mixtures were considered to explore the relation between the abundance of trapped generalist predators (i.e. lacewings [Neuroptera: Chrysopidae], ladybeetles [Coleoptera: Coccinellidae] and hoverflies [Diptera: Syrphidae]) and the community-weighted means of seven flower traits. Through a redundancy analysis, it was found that the presence/absence of flower ultra-violet pattern and the morphology of the corolla (that determines the accessibility of floral resources) were the traits that significantly affected the abundance of the generalist predators in the flower mixtures. The ladybeetles Harmonia axyridis and Propylea quatuordecimpunctata as well as the lacewings Chrysoperla carnea were more abundant in mixtures with a high cover of flowers showing an ultra-violet pattern, while the opposite was observed for the ladybeetle Coccinella septempunctata. As for hoverflies, Episyrphus balteatus and Eupeodes corollae were more abundant in mixtures with a high cover of flowers with open nectar. These results bring new knowledge regarding how a range of natural enemy species reacts to flower cues in diversified plant communities and should help in elaborating flower mixtures that enhance conservation biological control.
Research center :
TERRA Teaching and Research Centre - TERRA
Disciplines :
Agriculture & agronomy
Entomology & pest control
Environmental sciences & ecology
Author, co-author :
Hatt, Séverin ;  Université de Liège - ULiège > R&D Direction : Chercheurs ULg en mobilité
Uyttenbroeck, Roel;  Université de Liège - ULiège > Gembloux Agro-Bio Tech - TERRA Research and Teaching Center > Biodiversity and Landscapes
Lopes, Thomas;  Université de Liège - ULiège > Gembloux Agro-Bio Tech - TERRA Research and Teaching Center > Functional & Evolutionary Entomology
Mouchon, Pierre;  Institut Supérieur d'Agriculture de Lille
Osawa, Naoya;  Kyoto University > Faculty of Agriculture > Laboratory of Forest Ecology
Piqueray, Julien;  Natagriwal
Monty, Arnaud ;  Université de Liège - ULiège > Ingénierie des biosystèmes (Biose) > Biodiversité et Paysage
Francis, Frédéric  ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Gestion durable des bio-agresseurs
Language :
English
Title :
Identification of flower functional traits affecting abundance of generalist predators in perennial multiple species wildflower strips
Publication date :
2019
Journal title :
Arthropod-Plant Interactions
ISSN :
1872-8855
eISSN :
1872-8847
Publisher :
Springer, Germany
Volume :
13
Peer reviewed :
Peer reviewed
Funders :
CARE AgricultureIsLife - University of Liege
WBI - Wallonie-Bruxelles International [BE]
University of Liege - European Commission (BeiPD Marie-Curie COFUND)
Available on ORBi :
since 19 November 2018

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