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Ancient tepui summits harbor young rather than old lineages of endemic frogs
ArticleAbstract: The flattop mountains (tepuis) of South America are ancient remnants of the Precambrian Guiana ShielPalabras claves:Diversification hypotheses, Guiana Shield, Hylidae, Lost World, Sky islands, TepuisAutores:Cannatella D.C., Noonan B., Patricia E. Salerno, Rojas-Runjaic F.J.M., Ron Y.S.R., Santiago R. Ron, Señaris J.C.Fuentes:googlescopusEvolution of dietary specialization and chemical defense in poison frogs (Dendrobatidae): A comparative analysis
ArticleAbstract: Defensive mechanisms, including noxious or toxic substances, are favored by predation-driven naturalPalabras claves:Alkaloid sequestration, chemical defense, Comparative method, DENDROBATIDAE, Dietary specialization, NoxiousnessAutores:Cannatella D.C., Darst C., Luis A. Coloma, Pablo A. Menéndez-GuerreroFuentes:scopus