6 Works

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

David C Blackburn, David P Bickford, Arvin C Diesmos, Djoko T Iskandar, Rafe M Brown, David C. Blackburn, Rafe M. Brown, David P. Bickford, Arvin C. Diesmos & Djoko T. Iskandar
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...

Data from: Molecular phylogenetics of desmognathine salamanders (Caudata: Plethodontidae): a reevaluation of evolution in ecology, life history, and morphology

Tom A. Titus & Allan Larson
Phylogenetic relationships were reconstructed for salamanders of the plethodontid subfamily Desmognathinae to examine evolution of morphology, ecology, and life history. Mitochondrial DNA sequences encoding 12S and 16S ribosomal RNA and the valine transfer RNA provided 259 phylogenetically informative sites from approximately 1,200 nucleotide positions for 21 specimens representing 15 species and subspecies. These data were analyzed in conjunction with 13 morphological and reproductive characters to generate phylogenetic hypotheses. The directly developing terrestrial desmognathines Phaeognathus hubrichti...

Data from: Biogeography and evolution of body size and life history of African frogs: phylogeny of squeakers (Arthroleptis) and long-fingered frogs (Cardioglossa) estimated from mitochondrial data

David C Blackburn & D BLACKBURN
The evolutionary history of living African amphibians remains poorly understood. This study estimates the phylogeny within the frog genera Arthroleptis and Cardioglossa using approximately 2400 bases of mtDNA sequence data (12S, tRNA-Valine, and 16S genes) from half of the described species. Analyses are conducted using parsimony, maximum likelihood, and Bayesian methods. The effect of alignment on phylogeny estimation is explored by separately analyzing alignments generated with different gap costs and a consensus alignment. The consensus...

Data from: Calibrating divergence times on species trees versus gene trees: implications for speciation history of Aphelocoma jays

John E McCormack, Joseph Heled, Kathleen S Delaney, A Townsend Peterson & L Lacey Knowles
Estimates of the timing of divergence are central to testing the underlying causes of speciation. Relaxed molecular clocks and fossil calibration have improved these estimates; however, these advances are implemented in the context of gene trees, which can overestimate divergence times. Here we couple recent innovations for dating speciation events with the analytical power of species trees, where multilocus data are considered in a coalescent context. Divergence times are estimated in the bird genus Aphelocoma...

Data from: A new squeaker frog (Arthroleptidae: Arthroleptis) from the Cameroon Volcanic Line with redescriptions of Arthroleptis adolfifriederici Nieden, 1911 \"1910\" and A. variabilis Matschie, 1893

David C Blackburn, Legrand N Gonwouo, Raffael Ernst, Mark-Oliver Rödel & David C. Blackburn
We describe a new species of squeaker frog (Arthroleptis) from Mt. Manengouba in southwestern Cameroon. The new species is distinguished from other Cameroonian Arthroleptis by moderately larger body size; a darkened throat and posterior thigh, both with many white spots; and, in females, a fourth finger longer than the first and second fingers. This species corresponds to a Cameroonian taxon previously identified as Arthroleptis adolfifriederici but which has been long recognized as distinct. Multivariate morphometric...

Data from: Dispersal to or from an African biodiversity hotspot?

David C Blackburn & John Measey
Biodiversity hotspots are centers of endemism and thus contain many range-restricted species. In addition, within these hotspots are often widespread species that might have originated within a hotspot before dispersing to neighboring or distant regions. We test this hypothesis through a phylogeographic analysis of a miniature leaf litter frog, Arthroleptis xenodactyloides, that has a large distribution throughout the Eastern Arc, a biodiversity hotspot, and other regions in East Africa. Maximum likelihood and Bayesian estimates of...

Registration Year

  • 2010
    6

Resource Types

  • Dataset
    6

Affiliations

  • University of Kansas
    6
  • National Museum
    1
  • South African National Biodiversity Institute
    1
  • Institut Teknologi Bandung
    1
  • University of Michigan-Ann Arbor
    1
  • National University of Singapore
    1
  • University of Auckland
    1
  • Technical University of Berlin
    1
  • University of California Los Angeles
    1