8 Works

Data from: Microevolutionary processes generate phylogenomic discordance at ancient divergences

Jeffrey C. Oliver
Stochastic population processes may cause differences between species histories and gene histories. These processes are assumed to only influence the most recent divergences in the tree of life; however, there may be under-appreciated potential for microevolutionary processes to impact deep divergences. I used multispecies coalescent models to determine the impact of stochastic processes on deep phylogenomic histories. Here I show phylogenomic discordance between gene histories and species histories is expected at deep divergences for many...

Data from: Sexual conflict over mating in red-sided garter snakes (Thamnophis sirtalis) as indicated by experimental manipulation of genitalia

Christopher R. Friesen, Emily J. Uhrig, Mattie K. Squire, Robert T. Mason, Patricia L. R. Brennan, R. T. Mason, E. J. Uhrig, M. K. Squire & C. R. Friesen
Sexual conflict over mating can result in sex specific morphologies and behaviors that allow each sex to exert control over the outcome of reproduction. Genital traits, in particular, are often directly involved in conflict interactions. Via genital manipulation, we experimentally investigated whether genital traits in red-sided garter snakes influence copulation duration and formation of a copulatory plug. The hemipenes of male red-sided garter snakes have a large basal spine that inserts into the female cloaca...

Data from: Adaptive genetic markers discriminate migratory runs of Chinook salmon (Oncorhynchus tshawytscha) amid continued gene flow

Kathleen G. O'Malley, Dave P. Jacobson, Ryon Kurth, Allen J. Dill & Michael A. Banks
Neutral genetic markers are routinely used to define distinct units within species that warrant discrete management. Human-induced changes to gene flow however may reduce the power of such an approach. We tested the efficiency of adaptive vs. neutral genetic markers in differentiating temporally divergent migratory runs of Chinook salmon (Oncorhynchus tshawytscha) amid high gene flow owing to artificial propagation and habitat alteration. We compared seven putative migration timing genes to ten microsatellite loci in delineating...

Data from: Bioclimatic, ecological, and phenotypic intermediacy and high genetic admixture in a natural hybrid of octoploid strawberries

Isabella Salamone, Rajanikanth Govindarajulu, Stacey Falk, Matthew Parks, Aaron Liston & Tia-Lynn Ashman
PREMISE OF THE STUDY: Hybrid zones provide ‘natural laboratories’ for understanding the processes of selection, reinforcement and speciation. We sought to gain insight into the degree of introgression and the extent of ecological/phenotypic intermediacy in the natural hybrid strawberry, Fragaria × ananassa subsp. cuneifolia. METHODS: We used whole plastome sequencing to identify parental species-specific (Fragaria chiloensis and F. virginiana) chloroplast SNPs, and combined the use of these with nuclear microsatellite markers to genetically characterize the...

Data from: Fungi ahoy! Diversity on marine wooden substrata in the high North

Teppo Rämä, Jenni Nordén, Marie L. Davey, Geir H. Mathiassen, Joseph W. Spatafora & Håvard Kauserud
Marine fungi are severely understudied in the polar regions. We used molecularly identified cultures to study fungi inhabiting 50 intertidal and sea-floor logs along the North Norwegian coast. The aim was to explore the taxonomic and ecological diversity and to examine factors shaping the marine wood-inhabiting fungal communities. The 577 pure cultures analyzed clustered into 147 operational taxonomic units (OTUs) based on 97 % ITS sequence similarity. Ascomycota dominated, but OTUs belonging to Basidiomycota, Mucoromycotina...

Data from: Genetic variation in adaptive traits and seed transfer zones for Pseudoroegneria spicata (bluebunch wheatgrass) in the northwestern United States

John Bradley St. Clair, Francis F. Kilkenny, Richard C. Johnson, Nancy L. Shaw, George Weaver & John Bradley St. Clair
A genecological approach was used to explore genetic variation in adaptive traits in Pseudoroegneria spicata, a key restoration grass, in the intermountain western United States. Common garden experiments were established at three contrasting sites with seedlings from two maternal parents from each of 114 populations along with five commercial releases commonly used in restoration. Traits associated with size, flowering phenology and leaf width varied considerably among populations and were moderately correlated to the climates of...

Data from: Strong maternal fidelity and natal philopatry shape genetic structure in North Pacfic humpback whales

C. Scott Baker, Debbie Steel, John Calambokidis, Erin A. Falcone, Ursula Gozález-Peral, Jay Barlow, Alexander M. Burdin, Phillip J. Clapham, John K. B. Ford, Christine M. Gabriele, David Mattila, Janice M. Straley, Barbara L. Taylor, Jorge Urbán, Paul R. Wade, David Weller, Briana H. Witteveen, Manami Yamaguchi, CS Baker, D Steel, BH Witteveen, J Calambokidis, E Falcone, J Barlow, BL Taylor … & JM Straley
We quantified the relative influence of maternal fidelity to feeding grounds and natal fidelity to breeding grounds in humpback whales based on an ocean-wide survey of mitochondrial (mt) DNA diversity in the North Pacific. For 2,193 biopsy samples collected from whales in 10 feeding regions and 8 breeding regions during the winter and summer of 2004 to 2006, we first used microsatellite genotyping (average, 9.5 loci) to identify replicate samples. From sequences of the mtDNA...

Data from: Gene expression under chronic heat stress in populations of the mustard hill coral (Porites astreoides) from different thermal environments

Carly D. Kenkel, Eli Meyer, Mikhail V. Matz, C. D. Kenkel, E. Meyer & M. V. Matz
Recent evidence suggests that corals can acclimatize or adapt to local stress factors through differential regulation of their gene expression. Profiling gene expression in corals from diverse environments can elucidate the physiological processes that may be responsible for maximizing coral fitness in their natural habitat and lead to a better understanding of the coral's capacity to survive the effects of global climate change. In an accompanying paper, we show that Porites astreoides from thermally different...

Registration Year

  • 2013
    8

Resource Types

  • Dataset
    8

Affiliations

  • Oregon State University
    8
  • The University of Texas at Austin
    1
  • Institute of Geography
    1
  • University of Pittsburgh
    1
  • Texas A&M University
    1
  • Alaska Fisheries Science Center
    1
  • University of Alaska Fairbanks
    1
  • University of Alaska System
    1
  • United States Department of Agriculture
    1
  • University of Oslo
    1
  • Southwest Fisheries Science Center
    1
  • Agricultural Research Service
    1
  • Fisheries and Oceans Canada
    1
  • California Department of Fish and Wildlife
    1
  • University of Sydney
    1