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Data from: An ancient origin for the enigmatic Flat-Headed Frogs (Bombinatoridae: Barbourula) from the islands of Southeast Asia

When using this data, please cite the original article:

Blackburn DC, Bickford DP, Diesmos AC, Iskandar DT, Brown RM (2010) An ancient origin for the enigmatic flat-headed frogs (Bombinatoridae: Barbourula) from the Islands of Southeast Asia. PLoS ONE 5(8): e12090. doi:10.1371/journal.pone.0012090

Additionally, please cite the Dryad data package:

Blackburn DC, Bickford DP, Diesmos AC, Iskandar DT, Brown RM (2010) Data from: An ancient origin for the enigmatic Flat-Headed Frogs (Bombinatoridae: Barbourula) from the islands of Southeast Asia. Dryad Digital Repository. doi:10.5061/dryad.1914
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Dryad Package Identifier doi:10.5061/dryad.1914    167 views  
Abstract Background: The complex history of Southeast Asian islands has long been of interest to biogeographers. Dispersal and vicariance events in the Pleistocene have received the most attention, though recent studies suggest a potentially more ancient history to components of the terrestrial fauna. Among this fauna is the enigmatic archaeobatrachian frog genus Barbourula, which only occurs on the islands of Borneo and Palawan. We utilize this lineage to gain unique insight into the temporal history of lineage diversification in Southeast Asian islands. Methodology/Principal Findings: Using mitochondrial and nuclear genetic data, multiple fossil calibration points, and likelihood and Bayesian methods, we estimate phylogenetic relationships and divergence times for Barbourula. We determine the sensitivity of focal divergence times to specific calibration points by jackknife approach in which each calibration point is excluded from analysis. We find that relevant divergence time estimates are robust to the exclusion of specific calibration points. Barbourula is recovered as a monophyletic lineage nested within a monophyletic Costata. Barbourula diverged from its sister taxon Bombina in the Paleogene and the two species of Barbourula diverged in the Late Miocene. Conclusions/Significance: The divergences within Barbourula and between it and Bombina are surprisingly old and represent the oldest estimates for a cladogenetic event resulting in living taxa endemic to Southeast Asian islands. Moreover, these divergence time estimates are consistent with a new biogeographic scenario: the Palawan Ark Hypothesis. We suggest that components of Palawan’s terrestrial fauna might have ‘‘rafted’’ on emergent portions of the North Palawan Block during its migration from the Asian mainland to its present-day position near Borneo. Further, dispersal from Palawan to Borneo (rather than Borneo to Palawan) may explain the current day disjunct distribution of this ancient lineage.
Keywords Phylogenetics, Divergence Time Estimation, Biogeography,
Date Deposited 2010-08-27T18:59:03Z
Scientific Names Barbourula
Bombinatoridae
Anura
Amphibia
Spatial Coverage Philippines
Palawan
Borneo
Southeast Asia
Temporal Coverage Cenozoic
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Blackburn_et_al_2010_PLoSONE_Barbourula    67 views   23 downloads View File Details
Nexus file of aligned DNA sequence data containing partitions by codon position (by gene) and taxon sets.
Download: Blackburn_et_al_2010_PLoSONE_Barbourula.nex ( 138.5Kb )
To the extent possible under law, the authors have waived all copyright and related or neighboring rights to this data.  


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