8 Works

Data from: A new puddle frog (Phrynobatrachidae: Phrynobatrachus) from the Obudu Plateau in eastern Nigeria

David C. Blackburn & Mark-Oliver Rödel
A new species of puddle frog (Phrynobatrachus) is described from the Obudu Plateau in Cross River State of eastern Nigeria. The new species is distinguished from Phrynobatrachus species that are either closely related or occur in Nigeria or nearby countries by the combination of its larger body size (larger than the closely related P. chukuchuku, P. danko, P. manengoubensis, and P. werneri) and more extensive degree of development of male traits such as the nuptial...

Data from: Molecular systematics of the Philippine forest skinks (Squamata: Scincidae: Sphenomorphus): testing morphological hypotheses of interspecific relationships

Charles W. Linkem, Arvin C. Diesmos & Rafe M. Brown
Skinks of the genus Sphenomorphus are the most diverse clade of squamates in the Philippine Archipelago. Morphological examination of these species has defined six phenotypic groups that are commonly used in characterizations of taxonomic hypotheses. We used a molecular phylogeny based on four mitochondrial and two nuclear genes to assess the group's biogeographical history in the archipelago and examine the phylogenetic validity of the currently recognized Philippine species groups. We re-examined traditional characters used to...

Data from: Quantifying morphological change during an evolutionary radiation of Devonian trilobites

Francine R. Abe & Bruce S. Lieberman
The fossil record provides an important source of data on adaptive radiations, and indeed some of the earliest theoretical insights on the nature of these radiations were made by paleontologists. Here we focus on the diverse Devonian Metacryphaeus group calmoniid trilobites, known from the Malvinokaffric Realm; these have been considered a classic example of an adaptive radiation preserved in the fossil record. A geometric morphometric analysis is used in conjunction with phylogenetic and biogeographic patterns...

Data from: Evidence for repeated acquisition and loss of complex body form characters in an insular clade of Southeast Asian semi-fossorial skinks

Cameron David Siler & Rafe M. Brown
Evolutionary simplification, or loss of complex characters, is a major theme in studies of body form evolution. The apparently infrequent evolutionary reacquisition of complex characters has led to the assertion (Dollo’s Law) that once lost, complex characters may be impossible to re-evolve, at least via the exact same evolutionary process. Here we provide one of the most comprehensive, fine-scale analyses of squamate body-form evolution to date, introducing a new model system of closely related, morphologically...

Data from: SATé-II: very fast and accurate simultaneous estimation of multiple sequence alignments and phylogenetic trees

Kevin Liu, Tandy J. Warnow, Mark T. Holder, Serita M. Nelesen, Jiaye Yu, Alexandros P. Stamatakis & C. Randal Linder
Highly accurate estimation of phylogenetic trees for large datasets is difficult, in part because multiple sequence alignments must be accurate for phylogeny estimation methods to be accurate. Co-estimation of alignments and trees has been attempted, but currently only SATé estimates reasonably accurate trees and alignments for large datasets in practical time frames (Liu et al., 2009b). Here, we present a modification to the original SATé algorithm that improves upon SATé (which we now call SATé-I)...

Data from: Rapid evolution caused by pollinator loss in Mimulus guttatus

Sarah A Bodbyl Roels & John Kennedy Kelly
Anthropogenic perturbations including habitat loss and emerging disease are changing pollinator communities and generating novel selection pressures on plant populations. Disruption of plant-pollinator relationships is predicted to cause plant mating system evolution, although this process has not been directly observed. This study demonstrates the immediate evolutionary effects of pollinator loss within experimental populations of a predominately outcrossing wildflower. Initially equivalent populations evolved for five generations within two pollination treatments: abundant bumblebee pollinators vs. no pollinators....

Data from: Did geckos ride the Palawan raft to the Philippines?

Cameron D. Siler, Jamie R. Oaks, Luke J. Welton, Charles W. Linkem, John C. Swab, Arvin C. Diesmos & Rafe M. Brown
AIM: We examine the genetic diversity within the lizard genus Gekko in the Philippine islands to understand the role of geography and geological history in shaping species diversity in this group. We test multiple biogeographical hypotheses of species relationships, including the recently proposed Palawan Ark hypothesis. LOCATION: Southeast Asia and the Philippines. METHODS: Samples of all island endemic and widespread Philippine Gekko species were collected and sequenced for one mitochondrial gene (NADH dehydrogenase subunit 2)...

Data from: A time-calibrated species tree of Crocodylia reveals a recent radiation of the true crocodiles

Jamie R Oaks
True crocodiles (Crocodylus) are the most broadly distributed, ecologically diverse, and species-rich crocodylian genus, comprising about half of extant crocodylian diversity and exhibiting a circumtropical distribution. Crocodylus traditionally has been viewed as an ancient group of morphologically conserved species that originated in Africa prior to continental breakup. In this study, these long-held notions about the temporal and geographic origin of Crocodylus are tested using DNA sequence data of 10 loci from 76 individuals representing all...

Registration Year

  • 2011
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Resource Types

  • Dataset
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Affiliations

  • University of Kansas
    8
  • The University of Texas at Austin
    1
  • Heidelberg Institute for Theoretical Studies
    1
  • Museum für Naturkunde
    1