BioControl (2003) 48, 659-669

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Robert N. Wiedenmann, J.W. Smith Jr. and Luis A. Rodriguez-del-Bosque (2003)
Host suitability of the New World stalkborer Diatraea considerata for three Old World Cotesia parasitoids
BioControl 48 (6), 659-669
Abstract: Biological control of stalkboring Lepidoptera often has been successful when the braconid parasitoids in the genera Cotesia and Apanteles were the natural enemies of choice. Constraints in using these gregarious, koinobiont, endoparasitoids have included host suitability, especially as influenced by the host's immune response. The suitability of a novel host, the New World stalkborer Diatraea considerata (Lepidoptera: Pyralidae), for parasitization by three Old World braconids, Cotesia chilonis, C. flavipes and C. sesamiae (Hymenoptera: Braconidae), was compared to the suitability of another New World novel host, Diatraea saccharalis. D. considerata was less suitable for all three parasitoids than was D. saccharalis. The frequent occurrence of parasitized D. considerata larvae that did not yield parasitoids, or pupate within an appropriate time interval, suggested encapsulation of the parasitoid progeny, which was visible through the host cuticle. Given the suitability results, these three parasitoids would not be appropriate candidates for use against D. considerata. The results also have important implications for the narrow host range expressed by these parasitoids.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Robert N. Wiedenmann, Luis A. Rodriguez-Del-Bosque

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
resistance/tolerance/defence of host
general biology - morphology - evolution

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Diatraea considerata
Cotesia flavipes (parasitoid)
Cotesia sesamiae (parasitoid)
Cotesia chilonis (parasitoid)