Abstract
The response of the parasitoidCampoletis sonorensis (Cameron) as a natural control agent of the fall armyworm,Spodoptera frugiperda (J. E. Smith), was evaluated at 6 host densities and 2 temperature regime. A type-II functional response was exhibited by femaleC. sonorensis in response to varying densities of all armyworn larvae at both temperatures. Significantly more larvae were parasitized at 25°C for the host densities of 60 and 75, than for the same densities at 30°C. Third instar fall armyworm larvae were found to be the preferred stage for parasitization byC. sonorensis.
Résumé
Le potentiel du parasiteCampoletis sonorensis comme agent de limitation des populations deSpodoptera frugiperda (FAW) a été évalué face à six densités d'hôtes et à deux températures distinctes. Une réponse fonctionnelle de type II a été observée aux deux températures chez la femelle deC. sonorensis en réponse aux différentes densités de la larve de Noctuelle. Aux densités de 60 et 75, un plus grand nombre de larves a été parasité à 25°C qu'à 30°C. On a découvert que le troisième stade larvaire était choisi de préférence parC. sonorensis pour pondre.
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This research was supported by funds from HATCH project no. H-368 as allocated to the Georgia Agricultural Experiment Station.
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Isenhour, D.J. Campoletis sonorensis [Hym.: Ichneumonidae] as a parasitoid ofSpodoptera frugiperda [Lep.: Noctuidae]: Host stage preference and functional response. Entomophaga 30, 31–36 (1985). https://doi.org/10.1007/BF02372280
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DOI: https://doi.org/10.1007/BF02372280