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Evidence for adaptive radiation from a phylogenetic study of plant defenses

Summary: Evidence for adaptive radiation from a phylogenetic
study of plant defenses
Anurag A. Agrawala,b,1
, Mark Fishbeinc,2
, Rayko Halitschkea
, Amy P. Hastingsa
, Daniel L. Raboskya
, and Sergio Rasmanna
aDepartment of Ecology and Evolutionary Biology, Cornell University, Corson Hall, Ithaca, NY 14853-2701; bCornell Center for a Sustainable Future and
Department of Entomology, Cornell University, Ithaca, NY 14853; and cDepartment of Biology, Portland State University, P.O. Box 751, Portland, OR 97207
Edited by Douglas J. Futuyma, Stony Brook University, Stony Brook, NY, and approved August 6, 2009 (received for review May 4, 2009)
One signature of adaptive radiation is a high level of trait change
early during the diversification process and a plateau toward the end
of the radiation. Although the study of the tempo of evolution has
historically been the domain of paleontologists, recently developed
phylogenetic tools allow for the rigorous examination of trait evo-
lution in a tremendous diversity of organisms. Enemy-driven adaptive
radiation was a key prediction of Ehrlich and Raven's coevolutionary
hypothesis [Ehrlich PR, Raven PH (1964) Evolution 18:586608], yet
has remained largely untested. Here we examine patterns of trait


Source: Agrawal, Anurag - Department of Ecology and Evolutionary Biology & Entomollogy, Cornell University


Collections: Environmental Sciences and Ecology