Examination of Factors Potentially Affecting Dewlap Size in

The dewlaps of anoles vary greatly in size, including some species that have no dewlap at all. The dewlap serves many purposes-including courtship, territorial interactions, species recognition, and predator deterrence-and must be an effective communicatory signal in different light environments. We measured dewlap size in 52 species of Caribbean anoles to test a variety of hypotheses concerning the evolution of dewlap size. Species with...