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

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dc.careerCiencias Biológicases
dc.category.authorprincipalen_US
dc.contributor.authorRon Melo, Santiago Rafael
dc.contributor.correspondingSalerno, Patricia E.
dc.countryEcuadores
dc.date.accessioned2023-11-04T21:37:21Z
dc.date.available2023-11-04T21:37:21Z
dc.date.issued2012
dc.dedication.authorTCes
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 Naturaleses
dc.id.author1711059137
dc.id.type1
dc.identifier.doi10.1111/j.1558-5646.2012.01666.x
dc.identifier.issn15585646
dc.identifier.urihttps://repositorio.puce.edu.ec/handle/123456789/5594
dc.identifier.urihttp://onlinelibrary.wiley.com/doi/10.1111/j.1558-5646.2012.01666.x/full
dc.indexed.databaseScimago Journal Rankes
dc.language.isoen
dc.list.authorsSalerno, P., Ron, S., Señaris, J., Rojas, F., Noonan, B., Cannotella, D.
dc.magazine.pageRange3000 - 3013
dc.magazine.titleEvolution - International Journal of Organic Evolutionen_US
dc.magazine.volumeChapter66 (10)
dc.rightsClosedAccessen
dc.statepublisheden_US
dc.subjectDiversificationes
dc.subjectHypotheseses
dc.subjectGuianaes
dc.subjectShieldes
dc.subjectHylidaees
dc.subjectLost Worldes
dc.subjectSky islandses
dc.subjectTepuises
dc.subjectDiversification
dc.subjectHypotheses
dc.subjectGuiana
dc.subjectShield
dc.subjectHylidae
dc.subjectLost World
dc.subjectSky islands
dc.subjectTepuis
dc.titleAncient tepui summits harbor young rather than old lineages of endemic frogs.en_US
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