Abstract
Two natural enemies of the mealybugRastrococcus invadens, the parasitoidGyranussoidea tebygi and the pathogenHirsutella cryptosclerotium were tested. Levels of parasitism by the parasitoid were reduced by the pathogen but overall mortality of the mealybug was greater both when agents were acting together.
Résumé
Deux ennemis naturels de la cochenilleRastrococcus invadens Williams ont été testés simultanément: le parasitoïdeGyranussoidea tebygi Noyes et le pathogèneHirsutella cryptosclerotium Fernandez-Garcia. Les niveaux de parasitisme de l'hyménoptère sont réduits en présence du pathogène, que celui-ci ait été appliqué avant ou après l'exposition des cochenilles au parasitoïde. Cependant, la mortalité globale des cochenilles est plus importante lorsque les agents agissent ensemble. Il est peu probable que le pathogène réduise de façon sensible le contrôle queG. tebygi exerce actuellement en Afrique de l'Ouest.
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References
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Akalach, M., Fernandez-Garcia, E. & Moore, D. Interaction betweenRastrococcus invadens [Hom.: Pseudococcidae] and two natural enemies. Entomophaga 37, 99–106 (1992). https://doi.org/10.1007/BF02372978
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DOI: https://doi.org/10.1007/BF02372978
Key-Words
- Rastrococcus invadens
- Gyranussoidea tebygi
- Hirsutella cryptosclerotium
- parasitoid-pathogen interaction