Biological control; Diaperasticus erythrocephalus; integrated pest management; maize; Spodoptera frugiperda; Forestry; Biotechnology; Geography, Planning and Development; Agronomy and Crop Science; Plant Science
Abstract :
[en] Description of the subject. The fall armyworm, Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) is a major pest of staple cereal crops established in West Africa since 2016. Recently, earwigs have been observed consuming S. frugiperda immature stages in maize fields. Objectives. In this study, we evaluated the potential of earwigs, Diaperasticus erythrocephalus (Olivier) (Dermaptera: Forficulidae) to consume fall armyworm eggs and larvae in a laboratory setting. In addition, we compared the selectivity of the ten most used bio-and insecticides on this predatory species as well as on its prey for identifying products compatible with an integrated pest management strategy. Method. Predation was assessed by feeding earwigs ad libitum and susceptibility tests following the adapted IRAC 020 protocol. Results. Our results suggest that earwigs play an important role in the regulation of the fall armyworm: one individual consumes a mean of 90.3 ± 16.5 eggs or 36.4 ± 8.7 larvae per day. We found emamectin benzoate and spinetoram to be effective for controlling the fall armyworm, while not affecting the survival of this predator. On the other hand, chlorpyrifos-ethyl, methomyl and spinosad are not only effective against this pest but also highly toxic to the predator. Conclusions. We discuss the potential of these results in the development of an integrated pest management program against this invasive pest. In particular, we recommend training the farmers on natural enemy recognition and their conservation practices.
Disciplines :
Entomology & pest control
Author, co-author :
Ahissou, Besmer Régis; Université de Parakou, Faculté d’Agronomie, Parakou, Benin
Sawadogo, Wendnéyidé Mathieu; Ministère de l’Agriculture, des Ressources Animales et Halieutiques, Ouagadougou, Burkina Faso
Sankara, Fernand; Université Nazi Boni, Institut du Développement Rural, Laboratoire des Systèmes Naturels, Agrosystèmes et de l’Ingénierie de l’Environnement (SyNAIE), Bobo-Dioulasso, Burkina Faso
Kambiré, Fabèkourè Cédric; Institut de Recherche en Sciences Appliquées et Technologies (CNRST), Ouagadougou 03, Burkina Faso
Somda, Irénée; Université Nazi Boni, Institut du Développement Rural, Laboratoire des Systèmes Naturels, Agrosystèmes et de l’Ingénierie de l’Environnement (SyNAIE), Bobo-Dioulasso, Burkina Faso
Verheggen, François ; Université de Liège - ULiège > TERRA Research Centre > Gestion durable des bio-agresseurs
Language :
French
Title :
La chenille légionnaire d’automne en Afrique de l’Ouest : potentiel de prédation des perce-oreilles et sélectivité des insecticides
Publication date :
2024
Journal title :
Biotechnologie, Agronomie, Société et Environnement
ISSN :
1370-6233
eISSN :
1780-4507
Publisher :
University of Liege Faculty of Gembloux Agro-Bio Tech
Volume :
28
Issue :
2
Pages :
82 - 90
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
This research was supported by the Academy of Research and Higher Education-Commission Development Cooperation (ARES-CDD) as part of the PRD AGRO-ECO project. The authors would like to thank the project coordinators, Prof. Marie-Paule Kestemont (UCLouvain, Belgium) and Prof. Enoch G. Achigan-Dako (University of Abomey-Calavi, Benin). We also wish to express our thanks and gratitude to the farmers who made this study a success by allowing us access to their fields.
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