Evolutionary history of Scinax treefrogs on landâ•’bridge islands in southâ•’eastern Brazil

Island faunas are ideal for the study of evolutionary processes because both drift and selection can lead to genotypic and phenotypic divergence (Mayr, 1954; Schluter, 1988). Most studies of island endemics focus on habitat diversity and ecological gradients of isolated archipelagos that promote speciation and support considerable species diversity Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY 148532701, USA, Departamento de Ciências Biológicas, Universidade Federal de São Paulo, Rua Prof. Artur Riedel, 275 – Diadema, São Paulo 09972-270, Brazil, Programa de PósGraduação em Biologia Animal, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista, São José do Rio Preto, São Paulo, 15054-000, Brazil, Departamento de Zoologia, Instituto de Biociências, Universidade Estadual Paulista, Caixa Postal 199, Rio Claro, São Paulo, 13506900, Brazil