38 Works

Data from: Linked morphological changes during palate evolution in early tetrapods

Charles B. Kimmel, Brian Sidlauskas & Jennifer A. Clack
We examined the shapes and sizes of dermal bones of the palate of selected Palaeozoic tetrapods in order to identify the ancestral states of palatal bone morphologies in the earliest tetrapods, to learn how the composition of the palate varies within and among early tetrapod radiations, and recognize evolutionary correlations among the size and shapes of skeletal elements in this important group of animals. We find that whereas the palatal bones themselves and their arrangements...

Data from: Molecular phylogeny and phylogeography of the Australian freshwater fish genus Galaxiella, with an emphasis on dwarf Galaxias (G. pusilla)

Peter J. Unmack, Justin C. Bagley, Mark Adams, Michael P. Hammer & Jerald B. Johnson
The freshwater fauna of Southern Australia is primarily restricted to the southwestern and southeastern corners of the continent, and is separated by a large, arid region that is inhospitable to this biota. This geographic phenomenon has attracted considerable interest from biogeographers looking to explain evolutionary diversification in this region. Here, we employed phylogenetic and phylogeographic approaches to evaluate the effect of this barrier on a group of four galaxiid fish species (Galaxiella) endemic to temperate...

Data from: Ontogenetic development of intestinal length and relationships to diet in an Australasian fish family (Terapontidae)

Aaron M. Davis, Peter J. Unmack, Bradley J. Pusey, Richard G. Pearson & David L. Morgan
Background: One of the most widely accepted ecomorphological relationships in vertebrates is the negative correlation between intestinal length and proportion of animal prey in diet. While many fish groups exhibit this general pattern, other clades demonstrate minimal, and in some cases contrasting, associations between diet and intestinal length. Moreover, this relationship and its evolutionary derivation have received little attention from a phylogenetic perspective. This study documents the phylogenetic development of intestinal length variability, and resultant...

Data from: Folding wings like a cockroach: a review of transverse wing folding ensign wasps (Hymenoptera: Evaniidae: Afrevania and Trissevania)

István Mikó, Robert S. Copeland, James P. Balhoff, Matthew J. Yoder & Andrew R. Deans
We revise two relatively rare ensign wasp genera, whose species are restricted to Sub-Saharan Africa: Afrevania and Trissevania. Afrevania longipetiolata sp. nov., Trissevania heatherae sp. nov., T. hugoi sp. nov., T. mrimaensis sp. nov. and T. slideri sp. nov. are described, males and females of T. anemotis and Afrevania leroyi are redescribed, and an identification key for Trissevaniini is provided. We argue that Trissevania mrimaensis sp. nov. and T. heatherae sp. nov. populations are vulnerable,...

Data from: The Teleost Anatomy Ontology: anatomical representation for the genomics age

Wasila M. Dahdul, John G. Lundberg, Peter E. Midford, James P. Balhoff, Hilmar Lapp, Todd J. Vision, Melissa A. Haendel, Monte Westerfield & Paula M. Mabee
The rich knowledge of morphological variation among organisms reported in the systematic literature has remained in free-text format, impractical for use in large-scale synthetic phylogenetic work. This noncomputable format has also precluded linkage to the large knowledgebase of genomic, genetic, developmental, and phenotype data in model organism databases. We have undertaken an effort to prototype a curated, ontology-based evolutionary morphology database that maps to these genetic databases (http://kb.phenoscape.org) to facilitate investigation into the mechanistic basis...

Stable resource polymorphism along the benthic littoral-pelagic axis in an invasive crayfish

Iris Lang, Charlotte Evangelista, Rebecca Marie Everts, Géraldine Loot & Julien Cucherousset
Although intraspecific variability is now widely recognized as affecting evolutionary and ecological processes, our knowledge on the importance of intraspecific variability within invasive species is still limited. This is despite the fact that quantifying the extent of within-population morphological divergences associated with the use of different trophic or spatial resources (i.e. resource polymorphism) can help to better predict their ecological impacts on recipient ecosystems. Here, we quantified the extent of resource polymorphism within populations of...

Data from: Networks, trees, and treeshrews: assessing support and identifying conflict with multiple loci and a problematic root

Trina E. Roberts, Eric J. Sargis & Link E. Olson
Multiple unlinked genetic loci often provide a more comprehensive picture of evolutionary history than any single gene can, but analyzing multigene data presents particular challenges. Differing rates and patterns of nucleotide substitution, combined with the limited information available in any data set, can make it difficult to specify a model of evolution. In addition, conflict among loci can be the result of real differences in evolutionary process or of stochastic variance and errors in reconstruction....

Data from: A new phylogenetic method for identifying exceptional phenotypic diversification

Liam J. Revell, D. Luke Mahler, Pedro R. Peres-Neto & Benjamin D. Redelings
Currently available phylogenetic methods for studying the rate of evolution in a continuously valued character assume that the rate is constant throughout the tree or that it changes along specific branches according to an a priori hypothesis of rate variation provided by the user. Herein, we describe a new method for studying evolutionary rate variation in continuously valued characters given an estimate of the phylogenetic history of the species in our study. According to this...

Data from: Hunting to extinction: biology and regional economy influence extinction risk and the impact of hunting in artiodactyls

Samantha A. Price, John L. Gittleman, Samantha A Price & John L Gittleman
Half of all artiodactyls (even-toed hoofed mammals) are threatened with extinction, around double the mammalian average. Here, using a complete species-level phylogeny, we construct a multivariate model to assess for the first time which intrinsic (biological) and extrinsic (anthropogenic and environmental) factors influence variation in extinction risk in artiodactyls. Globally artiodactyls at greatest risk live in economically less developed areas, have older weaning ages and smaller geographical ranges. Our findings suggest that identifying predictors of...

Data from: Linked morphological changes during palate evolution in early tetrapods

Charles B. Kimmel, Brian Sidlauskas & Jennifer A. Clack
We examined the shapes and sizes of dermal bones of the palate of selected Palaeozoic tetrapods in order to identify the ancestral states of palatal bone morphologies in the earliest tetrapods, to learn how the composition of the palate varies within and among early tetrapod radiations, and recognize evolutionary correlations among the size and shapes of skeletal elements in this important group of animals. We find that whereas the palatal bones themselves and their arrangements...

Data from: Data archiving is a good investment

Heather A. Piwowar, Todd J. Vision & Michael C. Whitlock
Funding agencies are reluctant to support data archiving, even though large research funders such as the National Science Foundation (NSF) and the National Institutes of Health acknowledge its importance for scientific progress. Our quantitative estimates of data reuse indicate that ongoing financial investment in data-archiving infrastructure provides a high scientific return.

Data from: The biogeography of introgression in the critically endangered African monkey Rungweceubs kipunji

Trina E. Roberts, Tim R. B. Davenport, Kyndall B. P. Hildebrandt, Trevor Jones, William T. Stanley, Eric J. Sargis & Link E. Olson
In the four years since its original description, the taxonomy of the kipunji (Rungwecebus kipunji), a geographically restricted and critically endangered African monkey, has been the subject of much debate, and recent research suggesting that the first voucher specimen of Rungwecebus has baboon mitochondrial DNA has intensified the controversy. We show that Rungwecebus from a second region of Tanzania has a distinct mitochondrial haplotype that is basal to a clade containing all Papio species and...

Data from: Convergent evolution of phenotypic integration and its alignment with morphological diversification in Carribean Anolis ecomorphs

Jason J. Kolbe, Liam J. Revell, Brian Szekely, & Jonathan B Losos
The adaptive landscape and the G-matrix are keys concepts for understanding how quantitative characters evolve during adaptive radiation. In particular, whether the adaptive landscape can drive convergence of phenotypic integration (i.e., the pattern of phenotypic variation and covariation summarized in the P-matrix) is not well studied. We estimated and compared P for 19 morphological traits in eight species of Caribbean Anolis lizards, finding that similarity in P among species was not correlated with phylogenetic distance....

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