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Science 21 July 2006:
Vol. 313. no. 5785, p. 298
DOI: 10.1126/science.1129065
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Technical Comments

Response to Comment on "Opposing Effects of Native and Exotic Herbivores on Plant Invasions"

John D. Parker,1* Deron E. Burkepile,2 Mark E. Hay2

Our investigation found that non-native plants were more susceptible to native generalist herbivores than were native plants. Ricciardi and Ward's finding that non-native plants without native congeners are more susceptible to native herbivores than are non-natives with coexisting native congeners supports our hypothesis that evolutionary naïveté leaves plants at greater risk of attack by newly encountered generalist herbivores.

1 Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY 14853, USA.
2 School of Biology, Georgia Institute of Technology, Atlanta, GA 30332, USA.

* To whom correspondence should be addressed. E-mail: jdp52{at}cornell.edu

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Science. ISSN 0036-8075 (print), 1095-9203 (online)