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Arthropod-Plant Interactions

, Volume 13, Issue 1, pp 127–137 | Cite as

Identification of flower functional traits affecting abundance of generalist predators in perennial multiple species wildflower strips

  • Séverin HattEmail author
  • Roel Uytenbroeck
  • Thomas Lopes
  • Pierre Mouchon
  • Naoya Osawa
  • Julien Piqueray
  • Arnaud Monty
  • Frédéric Francis
Original Paper

Abstract

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.

Keywords

Conservation biological control Coccinellidae Syrphidae Chrysopidae Community-weighted mean Ultra-violet pattern Corolla morphology 

Notes

Acknowledgements

The authors are grateful for the technical support provided by the AgricultureIsLife experimental farm of Gembloux Agro-Bio Tech (University of Liège), Frank Van De Meutter (The Research Institute for Nature and Forest – INBO, Belgium) for verifying the identifications of some hoverfly species, and the TRY initiative on plant traits (http://www.try-db.org) for providing the data on flower traits. This research was funded by the Cellule d’Appui à la Recherche et à l’Enseignement (CARE) AgricultureIsLife–University of Liège (with doctoral scholarships), Wallonia-Brussels International (with the WBI.World post-doctoral scholarship) and the University of Liège-European Commission (with the ‘Be(lgium) International Post-Doc’ Marie-Curie COFUND grant).

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflicts of interest.

Supplementary material

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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  • Séverin Hatt
    • 1
    • 2
    • 3
    Email author
  • Roel Uytenbroeck
    • 1
    • 4
  • Thomas Lopes
    • 2
  • Pierre Mouchon
    • 2
    • 5
  • Naoya Osawa
    • 3
  • Julien Piqueray
    • 6
  • Arnaud Monty
    • 4
  • Frédéric Francis
    • 2
  1. 1.Terra–AgricultureIsLife, Gembloux Agro-Bio TechUniversity of LiègeGemblouxBelgium
  2. 2.Functional and Evolutionary Entomology, Terra Research and Teaching Center, Gembloux Agro-Bio TechUniversity of LiègeGemblouxBelgium
  3. 3.Laboratory of Forest Ecology, Faculty of AgricultureKyoto UniversityKyotoJapan
  4. 4.Biodiversity and Landscapes, Terra Research and Teaching Center, Gembloux Agro-Bio TechUniversity of LiègeGemblouxBelgium
  5. 5.Institut Supérieur d’Agriculture de LilleLilleFrance
  6. 6.Natagriwal asblGemblouxBelgium

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