Preference of Cosmopolites sordidus for fusarium wilt-diseased banana plants

Guillen Sanchez Cesar, De Lapeyre de Bellaire Luc, Sandoval Fernández Jorge Arturo, Tixier Philippe. 2023. Preference of Cosmopolites sordidus for fusarium wilt-diseased banana plants. Journal of Applied Entomology, 147 (2) : 140-146.

Url - jeu de données - Dataverse Cirad : https://doi.org/10.18167/DVN1/G9PJJJ

Résumé : The objective of this study was to understand the role of Cosmopolites sordidus in the dispersal of Fusarium oxysporum f. sp. cubense race 1 (Foc) and more specifically to determine whether C. sordidus is preferentially attracted to Foc-contaminated banana plant material vs. Foc-free material. The attraction of C. sordidus to healthy and Foc-contaminated Gros Michel banana bulbs and pseudostems, as well as to pure cultures of Foc, was compared using four-choice olfactometers. Males and females were studied separately. After storage in a dark room, weevils were placed in the central chamber of olfactometers. After 15 min, the orientation of each of the weevil was determined according to the food source located in each of the four peripheral chambers of the olfactometer. Overall, 560 olfactometer assays were carried out. Weevils were found to prefer Foc-infected plant tissues. Weevil preference was not significantly affected by weevil sex. The attraction of C. sordidus to Foc-contaminated plant material suggests that this insect could be important for the dissemination of Foc, especially in early stages of epidemics, when Foc-infected plants are scarce.

Mots-clés Agrovoc : comportement animal, vecteur de maladie, insecte nuisible, transmission des maladies, maladie de Panama, Cosmopolites sordidus, ravageur des plantes

Mots-clés complémentaires : Fusarium oxysporum f. sp. cubense

Mots-clés libres : Banana weevil, Food preference, Gros michel banana, Musa, Olfactometer, Panama disease

Classification Agris : H10 - Ravageurs des plantes
H20 - Maladies des plantes
L20 - Écologie animale

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Agences de financement hors UE : Corporacion Bananera Nacional

Auteurs et affiliations

• Guillen Sanchez Cesar, CORBANA (CRI)
• De Lapeyre de Bellaire Luc, CIRAD-PERSYST-UPR GECO (FRA) ORCID: 0000-0003-1243-0887
• Sandoval Fernández Jorge Arturo
• Tixier Philippe, CIRAD-PERSYST-UPR GECO (FRA) ORCID: 0000-0001-5147-9777 - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/604895/)

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