Stuart, Y.E., T.S. Campbell, P.A. Hohenlohe, R.G. Reynolds, L.J. Revell, and J.B. Losos. 2014. Rapid evolution of a native species following invasion by a congener. Science, 346: 463-466. DOI: 10.1126/science.1257008. [link, pdf]
Native green anoles (left) have evolved better gripping feet in response to an invasion of brown anoles (right) on islands in Florida. Credit: Todd Campbell and Adam Algar.