Unlike woodland edges, flower strips do not act as a refuge for cabbage stem flea beetle aestivation - AgroParisTech Accéder directement au contenu
Article Dans Une Revue Pest Management Science Année : 2023

Unlike woodland edges, flower strips do not act as a refuge for cabbage stem flea beetle aestivation

Justine Pigot
Antoine Gardarin
Connectez-vous pour contacter l'auteur
Thierry Doré
  • Fonction : Auteur
Alexandre Morisseau
  • Fonction : Auteur
Muriel Valantin-Morison

Résumé

Background. Semi-natural habitats are generally considered to be beneficial to natural enemies of crop pests and pollinators. However, they could also be used by pests, such as the Cabbage Stem Flea Beetle (CSFB), Psylliodes chrysocephala, a major pest of winter oilseed rape, Brassica napus. Adults emerge from pupation in late spring and move to aestivation habitats. Published reports identify forest edges as the major shelter used, but flower strips may also constitute an alternative habitat. This study aimed to: (i) determine the role of perennial flower strips in CSFB aestivation in comparison with woodland edges; (ii) determine the influence of landscape composition on the abundance of aestivating CSFB and (iii) identify the characteristics of the local habitat associated with a high abundance of aestivating CSFB. Results. CSFB emergence from aestivation was monitored with emergence traps from mid-August to mid-October 2021, at 14 sites in France. We found that CSFB preferred woodland edges and did not aestivate in flower strips. We found a negative effect of percentage woodland cover only for the smallest scale studied (250 m radius). We also found positive effects of the percentage of litter and mean tree circumference on the number of aestivating CSFB in woodland edges. Conclusion. The aestivation of CSFB is supported by woodland edges, but not by flower strips. This implies that the presence of flower strips near oilseed rape fields does not exacerbate the problems due to this pest. However, the crops in the vicinity of woodlands could be colonized earlier by this pest than more distant fields.
Fichier principal
Vignette du fichier
Pigot 2023 - Unlike woodland edges HAL.pdf (3.99 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Licence : CC BY NC - Paternité - Pas d'utilisation commerciale

Dates et versions

hal-04126508 , version 1 (13-06-2023)

Identifiants

Citer

Justine Pigot, Antoine Gardarin, Thierry Doré, Alexandre Morisseau, Muriel Valantin-Morison. Unlike woodland edges, flower strips do not act as a refuge for cabbage stem flea beetle aestivation. Pest Management Science, 2023, ⟨10.1002/ps.7558⟩. ⟨hal-04126508⟩
66 Consultations
18 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More