8 Works

Data from: Migration strategy affects avian influenza dynamics in mallards (Anas platyrhynchos)

Nichola J. Hill, John Y. Takekawa, Joshua T. Ackerman, Keith A. Hobson, Garth Herring, Carol J. Cardona, Jonathan A. Runstadler & Walter M. Boyce
Studies of pathogen transmission typically overlook that wildlife hosts can include both migrant and resident populations when attempting to model circulation. Through the application of stable isotopes in flight feathers, we estimated the migration strategy of mallards (Anas platyrhynchos) - resident, intermediate-distance migrant or long-distance migrant, occurring on California wintering grounds. Our study demonstrates that mallards, a principal host of avian influenza virus (AIV) in nature, contribute differently to virus gene flow depending on migration...

Data from: Molecular phylogeny of the cyprinid tribe Labeonini (Teleostei: Cypriniformes)

Lei Yang, M. Arunachalam, Tetsuya Sado, Boris A. Levin, Alexander S. Golubtsov, Jörg Freyhof, John P. Friel, Wei-Jen Chen, M. Vincent Hirt, Raja Manickam, Mary K. Agnew, Andrew M. Simons, Kenji Saitoh, Masaki Miya, Richard L. Mayden, Shunping He & M. Vincent Hirt
The cyprinid tribe Labeonini (sensu Rainboth, 1991) is a large group of freshwater fishes containing around 40 genera and 400 species. They are characterized by an amazing diversity of modifications to their lips and associated structures. In this study, a total of 34 genera and 142 species of putative members of this tribe, which represent most of the generic diversity and more than one third of the species diversity of the group, were sampled and...

Data from: Sex determination meltdown upon biological control introduction of the parasitoid Cotesia rubecula?

Jetske G. De Boer, Bram Kuijper, George E. Heimpel & Leo W. Beukeboom
Natural enemies may go through genetic bottlenecks during the process of biological control introductions. Such bottlenecks are expected to be particularly detrimental in parasitoid Hymenoptera that exhibit complementary sex determination (CSD). CSD is associated with a severe form of inbreeding depression because homozygosity at one or multiple sex loci leads to the production of diploid males that are typically unviable or sterile. We observed that diploid males occur at a relatively high rate (8-13% of...

Data from: Interactions between soil habitat and geographic range location affect plant fitness

John Stanton-Geddes, Ruth G. Shaw & Peter Tiffin
Populations are often found on different habitats at different geographic locations. This habitat shift may be due to biased dispersal, physiological tolerances or biotic interactions. To explore how fitness of the native plant Chamaecrista fasciculata depends on habitat within, at and beyond its range edge, we planted seeds from five populations in two soil substrates at these geographic locations. We found that with reduced competition, lifetime fitness was always greater or equivalent in one habitat...

Data from: High diversity and widespread occurrence of mitotic spore mats in ectomycorrhizal Pezizales

Rosanne A. Healy, Matthew E. Smith, Gregory M. Bonito, Donald H. Pfister, Gonzalo G. Guevara, Caroline Hobart, Leticia Kumar, Thai Lee, Katherine Stafford, Zai-Wei Ge, Rytas Vilgalys, Gwendolyn Williams, James Trappe, David J. McLaughlin, D. H. Pfister, Ge, Z. -W., G. M. Bonito, G. Williams, K. Stafford, R. Vilgalys, J. Trappe, R. A. Healy, L. Kumar, T. Lee, D. J. McLaughlin … & C. Hobart
Fungal mitospores may function as dispersal units and/ or spermatia and thus play a role in distribution and/or mating of species that produce them. Mitospore production in ectomycorrhizal (EcM) Pezizales is rarely reported, but here we document mitospore production by a high diversity of EcM Pezizales on three continents, in both hemispheres. We sequenced the internal transcribed spacer (ITS) and partial large subunit (LSU) nuclear rDNA from 292 spore mats (visible mitospore clumps) collected in...

Data from: Role of climate and competitors in limiting fitness across range edges of an annual plant

John Stanton-Geddes, Peter Tiffin & Ruth G. Shaw
It is often assumed that the geographic distributions of species match their climatic tolerances, but this assumption is not frequently tested. Moreover, few studies examine the relative importance of abiotic and biotic factors for limiting species ranges. We combined multiple approaches to assess the extent to which fitness of a widespread native annual legume, Chamaecrista fasciculata decreases at and beyond its northern and western range edges, and how this is influenced by the presence of...

Data from: Deep sequencing of amplicons reveals widespread intraspecific hybridization and multiple origins of polyploidy in big sagebrush (Artemisia tridentata)

Bryce A. Richardson, Justin T. Page, Prabin Bajgain, Stewart C. Sanderson & Joshua A. Udall
PREMISE OF THE STUDY: Hybridization has played an important role in the evolution and ecological adaptation in diploid and polyploid plants. Artemisia tridentata (Asteraceae) tetraploids are extremely widespread and of great ecological importance. These tetraploids are often taxonomically identified as A. tridentata ssp. wyomingensis, or as autotetraploids of diploid subspecies tridentata and vaseyana. Few details are available as to how these tetraploids are formed or how they are related to diploid subspecies. METHODS: We used...

Data from: The adaptive potential of Populus balsamifera L. to phenology requirements in a warmer global climate

Matthew S. Olson, Nicholas Levsen, Raju Y. Soolanayakanahally, Robert D. Guy, William R. Schroeder, Stephen R. Keller & Peter Tiffin
The manner in which organisms adapt to climate change informs both a broader understanding of the evolution of biodiversity as well as plans for future conservation and mitigation. We apply common garden and association mapping approaches to quantify genetic variance and identify loci affecting bud flush and bud set, traits that define a tree’s season for height growth, in the boreal forest tree Populus balsamifera L. (balsam poplar). Using data from 478 genotypes grown in...

Registration Year

  • 2012
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  • Dataset
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Affiliations

  • University of Minnesota
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  • University of California System
    1
  • Duke University
    1
  • Oregon State University
    1
  • University of Groningen
    1
  • University of Alaska Fairbanks
    1
  • United States Department of Agriculture
    1
  • Leibniz Institute of Freshwater Ecology and Inland Fisheries
    1
  • Saint Louis University
    1
  • Kunming Institute of Botany
    1
  • Manonmaniam Sundaranar University
    1
  • University of Florida
    1
  • Chinese Academy of Sciences
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  • University of British Columbia
    1
  • Harvard University
    1