8 Works

Data from: Genomic variation in a widespread Neotropical bird (Xenops minutus) reveals divergence, population expansion, and gene flow

Michael G. Harvey & Robb T. Brumfield
The demographic and phylogeographic histories of species provide insight into the processes responsible for generating biological diversity, and genomic datasets are now permitting the estimation of species histories with unprecedented accuracy. We used a genomic single nucleotide polymorphism (SNP) dataset generated using a RAD-Seq method to investigate the historical demography and phylogeography of a widespread lowland Neotropical bird (Xenops minutus). As expected, we found that prominent landscape features that act as dispersal barriers, such as...

Data from: Historical and recent processes shaping the geographic range of a rocky intertidal gastropod: phylogeography, ecology, and habitat availability

Phillip B. Fenberg, Karine Posbic & Michael E. Hellberg
Factors shaping the geographic range of a species can be identified when phylogeographic patterns are combined with data on contemporary and historical geographic distribution, range-wide abundance, habitat/food availability, and through comparisons with codistributed taxa. Here, we evaluate range dynamism and phylogeography of the rocky intertidal gastropod Mexacanthina lugubris lugubris across its geographic range – the Pacific coast of the Baja peninsula and southern California. We sequenced mitochondrial DNA (CO1) from ten populations and compliment these...

Data from: Genetic species delineation among branching Caribbean Porites corals

Carlos Prada, Melissa B. Debiasse, Joseph E. Neigel, Bree Yednock, Joseph L. Stake, Zach H. Foesman, Iliana B. Baums & Michael E. Hellberg
Coral species are difficult to discern because of their morphological plasticity, long generation times, and slow rates of mitochondrial DNA evolution. Amongst Caribbean representatives of the genus Porites are three named species (P. divaricata, P. furcata, and P. porites) with branching colony morphologies whose validity as genetically isolated species has been debated. We present sequence data from the mitochondrial control region, nuclear ITS, and nine single copy nuclear loci for the Caribbean Porites and a...

Data from: Cryptic diversity hides host and habitat specialization In a gorgonian-algal symbiosis

Carlos Prada, Shelby E. McIlroy, Diana M. Beltrán, Daniel J. Valint, Scott Alan Ford, Michael E. Hellberg & Mary Alice Coffroth
Shallow water anthozoans, the major builders of modern coral reefs, enhance their metabolic and calcification rates with algal symbionts. Controversy exists over whether these anthozoan-algae associations are flexible over the lifetimes of individual hosts, promoting acclimative plasticity, or are closely linked, such that hosts and symbionts coevolve across generations. Given the diversity of algal symbionts and the morphological plasticity of many host species, cryptic variation within either partner could potentially confound studies of anthozoan-algal associations....

Data from: Adaptive processes drive ecomorphological convergent evolution in antwrens (Thamnophilidae)

Gustavo A. Bravo, , Robb Thomas Brumfield & J. V. Remsen
Phylogenetic niche conservatism and convergence are contrasting evolutionary patterns that describe phenotypic similarity across independent lineages. Assessing whether and how adaptive processes give origin to these patterns represent a fundamental step toward understanding phenotypic evolution. Phylogenetic model-based approaches offer the opportunity not only to distinguish between phylogenetic niche conservatism and convergence, but also to determine the extent that adaptive processes explain phenotypic similarity. The Myrmotherula complex in the Neotropical family Thamnophilidae is a polyphyletic group...

Data from: The role of mitochondrial introgression in illuminating the evolutionary history of Nearctic treefrogs

, Brian Tilston Smith, Adrian Nieto-Montes De Oca, Uri Omar Garcia-Vazquez, Brett R. Riddle & Robert W. Bryson
Inferring the evolutionary history of lineages often becomes difficult when gene histories are in conflict with each other. Introgression, for example, can cause DNA sequences from one species to be more similar to sequences of a different species and lead to incongruence amongst gene trees. However, incorporating congruent and incongruent locus-specific phylogenetic estimates with the geographical distribution of lineages may provide valuable insight into evolutionary processes important to speciation. In this study, we investigated mitochondrial...

Data from: Conservation genetics of the Philippine tarsier: cryptic genetic variation restructures conservation priorities for an island archipelago primate

Rafe M. Brown, Jennifer A. Weghorst, Karen V. Olson, Mariano R. M. Duya, Anthony J. Barley, Melizar V. Duya, Myron Shekelle, Irene Neri-Arboleda, Jacob A. Esselstyn, Nathaniel J. Dominy, Perry S. Ong, Gillian L. Moritz, Adrian Luczon, Mae Lowe L. Diesmos, Arvin C. Diesmos & Cameron D. Siler
Establishment of conservation priorities for primates is a particular concern in the island archipelagos of Southeast Asia, where rates of habitat destruction are among the highest in the world. Conservation programs require knowledge of taxonomic diversity to ensure success. The Philippine tarsier is a flagship species that promotes environmental awareness and a thriving ecotourism economy in the Philippines. However, assessment of its conservation status has been impeded by taxonomic uncertainty, a paucity of field studies,...

Data from: A phylogenomic analysis of turtles

Nicholas G. Crawford, James F. Parham, Anna B. Sellas, Brant C. Faircloth, Travis C. Glenn, Theodore J. Papefuss, James B. Henderson, Madison H. Hansen, W. Brian Simison & Theodore J. Papenfuss
Molecular analyses of turtle relationships have overturned prevailing morphological hypotheses and prompted the development of a new taxonomy. Here we provide the first genome-scale analysis of turtle phylogeny. We sequenced 2,381 ultraconserved element (UCE) loci representing a total of 1,718,154 bp of aligned sequence. Our sampling includes 32 turtle taxa representing all 14 recognized turtle families and an additional six outgroups. Maximum likelihood, Bayesian, and species tree methods produce a single resolved phylogeny. This robust...

Registration Year

  • 2014
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  • Louisiana State University of Alexandria
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