Ancient tepui summits harbor young rather than old lineages of endemic frogs.

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dc.careerCiencias Biológicasen_US
dc.category.authorprincipalen_US
dc.contributor.authorRon Melo, Santiago Rafael
dc.contributor.correspondingSalerno, Patricia E.en_US
dc.countryEcuadoren_US
dc.date.accessioned2023-11-04T21:37:21Z
dc.date.available2023-11-04T21:37:21Z
dc.date.issued2012
dc.dedication.authorTCen_US
dc.description.abstractThe flattop mountains (tepuis) of South America are ancient remnants of the Precambrian Guiana Shield plateau. The tepui summits, isolated by their surrounding cliffs that can be up to 1000 m tall, are thought of as “islands in the sky,” harboring relict flora and fauna that underwent vicariant speciation due to plateau fragmentation. High endemicity atop tepui summits support the idea of an ancient “Lost World” biota. However, recent work suggests that dispersal between lowlands and summits has occurred long after tepui formation indicating that tepui summits may not be as isolated from the lowlands as researchers have long suggested. Neither view of the origin of the tepui biota (i.e., ancient vicariance vs. recent dispersal) has strong empirical support owing to a lack of studies. We test diversification hypotheses of the Guiana Shield highlands by estimating divergence times of an endemic group of treefrogs, Tepuihyla. We find that diversification of this group does not support an ancient origin for this taxon; instead, divergence times among the highland species are 2–5 Ma. Our data indicate that most highland speciation occurred during the Pliocene. Thus, this unparalleled landscape known as “The Lost World” is inhabited, in part, not by Early Tertiary relicts but neoendemics.en_US
dc.facultyCiencias Exactas y Naturalesen_US
dc.id.author1711059137en_US
dc.id.type1en_US
dc.identifier.doi10.1111/j.1558-5646.2012.01666.xen_US
dc.identifier.issn15585646
dc.identifier.urihttp://onlinelibrary.wiley.com/doi/10.1111/j.1558-5646.2012.01666.x/fullen_US
dc.identifier.urihttps://repositorio.puce.edu.ec/handle/123456789/5594
dc.indexed.databaseScimago Journal Ranken_US
dc.list.authorsSalerno, P., Ron, S., Señaris, J., Rojas, F., Noonan, B., Cannotella, D.en_US
dc.magazine.pageRange3000 - 3013en_US
dc.magazine.titleEvolution - International Journal of Organic Evolutionen_US
dc.magazine.volumeChapter66 (10)en_US
dc.rightsClosedAccessen_US
dc.statepublisheden_US
dc.subjectDiversificationen_US
dc.subjectHypothesesen_US
dc.subjectGuianaen_US
dc.subjectShielden_US
dc.subjectHylidaeen_US
dc.subjectLost Worlden_US
dc.subjectSky islandsen_US
dc.subjectTepuisen_US
dc.titleAncient tepui summits harbor young rather than old lineages of endemic frogs.en_US
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