Vincent Van Kerckvoorde1, Rik Clymans1,2,3, Eva Bangels1, Ammar Alhmedi1, Bart De Ketelaere3, Patrick De Clercq2, Dany Bylemans1,3, Tim Belien1. 1. Zoology Department, Research Centre for Fruit Cultivation (pcfruit npo), Fruittuinweg 1, B-3800, Sint-Truiden, Belgium. 2. Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium. 3. Department of Biosystems, KU Leuven, Decroylaan 42, B-3001, Heverlee, Belgium.
Abstract
BACKGROUND: Spotted wing drosophila (SWD), Drosophila suzukii (Matsumura) (Diptera: Drosophilidae), is a pest of stone and small fruits causing considerable economic losses. Current management strategies primarily rely on calendar-based spraying, due to the poor relationship between monitoring data and damage levels and the lack of success of mass trapping tools. The aim of this study was to evaluate different trap models for SWD, with an emphasis on their fly retention capacity. To this end, we examined and quantified the added value of two fly retaining trap features; tunnel entries to impede escaping and an insecticide-coated inner surface as a killing agent. RESULTS: An insecticide-coated inner surface resulted in a significantly higher trap retention after 24 h in the laboratory (4.9 to 7.4 times higher, depending on trap type) compared to a non-coated trap. Trapping efficacy was significantly improved in field trials by such a killing agent in the trap (1.2 to 4.5 times higher). Tunnel entries significantly improved trap retention in the laboratory and field (1.5 times). CONCLUSION: The outcomes of this study clearly reveal the substantial impact of the fly retention capacity of SWD traps on their overall capture performances. It was demonstrated for the first time that an insecticide-coated inner surface as a killing agent significantly improves trap efficacy for SWD. This finding can readily be implemented in any trap model to improve monitoring and mass trapping of SWD. Also tunnel entries were shown to have a significant influence on the fly retention and hence substantially enhance trapping efficacy. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.
BACKGROUND: Spotted wing drosophila (SWD), Drosophila suzukii (Matsumura) (Diptera: Drosophilidae), is a pest of stone and small fruits causing considerable economic losses. Current management strategies primarily rely on calendar-based spraying, due to the poor relationship between monitoring data and damage levels and the lack of success of mass trapping tools. The aim of this study was to evaluate different trap models for SWD, with an emphasis on their fly retention capacity. To this end, we examined and quantified the added value of two fly retaining trap features; tunnel entries to impede escaping and an insecticide-coated inner surface as a killing agent. RESULTS: An insecticide-coated inner surface resulted in a significantly higher trap retention after 24 h in the laboratory (4.9 to 7.4 times higher, depending on trap type) compared to a non-coated trap. Trapping efficacy was significantly improved in field trials by such a killing agent in the trap (1.2 to 4.5 times higher). Tunnel entries significantly improved trap retention in the laboratory and field (1.5 times). CONCLUSION: The outcomes of this study clearly reveal the substantial impact of the fly retention capacity of SWD traps on their overall capture performances. It was demonstrated for the first time that an insecticide-coated inner surface as a killing agent significantly improves trap efficacy for SWD. This finding can readily be implemented in any trap model to improve monitoring and mass trapping of SWD. Also tunnel entries were shown to have a significant influence on the fly retention and hence substantially enhance trapping efficacy. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.
Entities:
Keywords:
Drosophila suzukii; attract and kill; cypermethrin; deltamethrin; fly retention; killing agent; mass trapping; monitoring; trap design
Authors: Rik Clymans; Vincent Van Kerckvoorde; Tom Thys; Patrick De Clercq; Dany Bylemans; Tim Beliën Journal: Insects Date: 2022-02-28 Impact factor: 2.769