How do genes that affect traits associated with resource utilization evolve in response to changes or differences in the breadth and composition of these resources? In their paper, Effects of predator-prey interactions on predator traits: Differentiation of diets and venoms of a marine snail, former Mollusk Division postdoc, David Weese, and Mollusk Division Curator, Tom Duda, show that the venom of Conus miliaris at Easter Island, which preys on a broader assortment of polychaetes species at Easter Island than at other locations in the Indo-West Pacific, is considerably distinct from the venoms of populations elsewhere due to both changes in expression patterns and increased diversity of venom-related genes.