Lack of evolution in a leaf beetle that lives on two contrasting host plants

  title={Lack of evolution in a leaf beetle that lives on two contrasting host plants},
  author={K. Gould and Paul Wilson},
  journal={Ecology and Evolution},
  pages={3905 - 3913}
Abstract The interactions between plant‐eating insects and their hosts have shaped both the insects and the plants, driving evolution of plant defenses and insect specialization. The leaf beetle Trirhabda eriodictyonis (Chrysomelidae) lives on two shrubs with differing defenses: Eriodictyon crassifolium has hairy leaves, whereas E. trichocalyx has resinous leaves. We tested whether these beetles have differentiated onto the two host plants, and if not, whether the beetles prefer the better host… 

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