Influence of a cover crop on ants and dermapterans in banana plantations: Consequences for the regulation of the banana weevil

Carval Dominique, Resmond Rémi, Gbèblonoudo Dassou Anicet, Cotte Violaine, Achard Raphaël, Tixier Philippe. 2022. Influence of a cover crop on ants and dermapterans in banana plantations: Consequences for the regulation of the banana weevil. International Journal of Pest Management : 1-11.

https://doi.org/10.1080/09670874.2022.2029972

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

Résumé : The banana weevil Cosmopolites sordidus Germar is the most important pest of banana and plantain. In banana agroecosystems, cover cropping is a practice that prevents the use of herbicides and may provide natural habitats for generalist predators. Here, we assessed the effect of a cover crop, Paspalum notatum Flüggé on the ant community, dermapterans and C. sordidus. In investigating the dumps of Pheidole jelskii Mayr colonies, we found that most of carcasses belonged to other ant species (> 96%) and very few (< 1%) belonged to C. sordidus. In plots with banana plants and with and without a cover crop, the occurrences of almost all ant species were negatively correlated with each other, but the occurrence of ants was not correlated with weevil abundance. However, we found a negative relationship between the abundances of dermapterans and C. sordidus, both of which were negatively related to presence of the cover crop. These results indicate that dermapterans are probably the main biological control agents of C. sordidus and that cover cropping may increase C. sordidus regulation.

Mots-clés Agrovoc : ravageur des plantes, plante de couverture, lutte antiravageur, couverture du sol, agent de lutte biologique, agroécosystème, Paspalum notatum, Musa (bananes), Dermaptera, Cosmopolites sordidus

Mots-clés géographiques Agrovoc : Martinique, France

Mots-clés libres : Dermapterans, Biological Control, Predation, Scavenging, Cover crop, Trophic network, Dump analysis

Classification Agris : H10 - Ravageurs des plantes
H01 - Protection des végétaux - Considérations générales
F08 - Systèmes et modes de culture

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

Agences de financement européennes : European Regional Development Fund

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