Behavioral responses to host foodplants of two populations of the insect parasitoid Cotesia congregata (Say)

@article{Kester1994BehavioralRT,
  title={Behavioral responses to host foodplants of two populations of the insect parasitoid Cotesia congregata (Say)},
  author={Karen M. Kester and Pedro Barbosa},
  journal={Oecologia},
  year={1994},
  volume={99},
  pages={151-157}
}
To test the hypothesis that natural enemy populations differ in their behavioral responses to plants or to plant allelochemicals, we compared two populations of the gregarious larval endoparasitoid, Cotesia congregata (Say) (Hymenoptera: Braconidae) that differed in their historical and present exposure to tobacco. The major hosts for both populations were Manduca sexta L. and M. quinquemaculata (Haworth) (Lepidoptera: Sphingidae), but these hosts were typically encountered on tobacco by… 
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References

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Much evidence is incompatible with the widely held assumptions that diet breadth is a species characteristic and that specialization among herbivorous insects implies greater efficiency and less niche overlap.