8 Works

Data from: Genetic restoration in the eastern collared lizard under prescribed woodland burning

Jennifer L. Neuwald & Alan R. Templeton
Eastern collared lizards of the Ozarks live in glades—open, rocky habitats embedded in a woodland matrix. Past fire suppression had made the woodlands a barrier to dispersal, leading to habitat destruction, fragmentation and local extinction. Reintroduced populations of lizards were subjected to 10 years of habitat fragmentation under continued fire suppression followed by twelve years of landscape restoration with prescribed burns. Prior to prescribed burning, genetic diversity decreased within glades and differentiation increased among glades....

Data from: How hot are Drosophila hotspots? Examining recombination rate variation and associations with nucleotide diversity, divergence, and maternal age in Drosophila pseudoobscura

Brenda Manzano-Winkler, Suzanne E. McGaugh & Mohamed A. F. Noor
Fine scale meiotic recombination maps have uncovered a large amount of variation in crossover rate across the genomes of many species, and such variation in mammalian and yeast genomes is concentrated to <5 kb regions of highly elevated recombination rates (10–100x the background rate) called “hotspots.” Drosophila exhibit substantial recombination rate heterogeneity across their genome, but evidence for these highly-localized hotspots is lacking. We assayed recombination across a 40 Kb region of Drosophila pseudoobscura chromosome...

Data from: Plant-pollinator interactions over 120 years: loss of species, co-occurrence, and function

Laura A. Burkle, John C. Marlin & Tiffany M. Knight
Using historic data sets, we quantified the degree to which global change over 120 years disrupted plant-pollinator interactions in a temperate forest understory community in Illinois, USA. We found degradation of interaction network structure and function and extirpation of 50% of bee species. Network changes can be attributed to shifts in forb and bee phenologies resulting in temporal mismatches, nonrandom species extinctions, and loss of spatial co-occurrences between extant species in modified landscapes. Quantity and...

Data from: Searching for the bull's-eye: agents and targets of selection vary among geographically disparate cyanogenesis clines in white clover (Trifolium repens L.)

Nicholas J. Kooyers & Kenneth M. Olsen
The recurrent evolution of adaptive clines within a species can be used to elucidate the selective factors and genetic responses that underlie adaptation. White clover is polymorphic for cyanogenesis (HCN release with tissue damage), and climate-associated cyanogenesis clines have evolved throughout the native and introduced species range. This polymorphism arises through two independently segregating Mendelian polymorphisms for the presence/absence of two required components: cyanogenic glucosides and their hydrolyzing enzyme linamarase. Cyanogenesis is commonly thought to...

Data from: Mixing of vineyard and oak-tree ecotypes of Saccharomyces cerevisiae in North American vineyards

Katie E. Hyma & Justin C. Fay
Humans have had a significant impact on the distribution and abundance of Saccharomyces cerevisiae through its widespread use in beer, bread and wine production. Yet, similar to other Saccharomyces species, S. cerevisiae has also been isolated from habitats unrelated to fermentations. Strains of S. cerevisiae isolated from grapes, wine must and vineyards worldwide are genetically differentiated from strains isolated from oak-tree bark, exudate and associated soil in North America. However, the causes and consequences of...

Data from: The role of Bh4 in parallel evolution of hull color in domesticated and weedy rice

Cynthia C. Vigueira, Wantong Li & Kenneth M. Olsen
The two independent domestication events in the genus Oryza that led to African and Asian rice offer an extremely useful system for studying the genetic basis of parallel evolution. This system is also characterized by parallel de-domestication events, with two genetically distinct weedy rice biotypes in the US derived from the Asian domesticate. One important trait that has been altered by rice domestication and de-domestication is hull colour. The wild progenitors of the two cultivated...

Data from: The rate and effects of spontaneous mutation on fitness traits in the social amoeba, Dictyostelium discoideum

David W. Hall, Sara Fox, Joan E. Strassman, David C. Queller, Joan E. Strassmann & Jennie J. Kuzdzal-Fick
We performed a mutation accumulation (MA) experiment using the social amoeba Dictyostelium discoideum to estimate the rate and distribution of effects of spontaneous mutations affecting eight putative fitness traits. We found that the per generation mutation rate for most fitness components is 0.0019 mutations per haploid genome per generation, or larger. This rate is an order of magnitude higher than estimates for fitness components in the unicellular eukaryote Saccharomyces cerevisiae, even though the base-pair substitution...

Data from: Size variation, growth strategies and the evolution of modularity in the mammalian skull

Arthur Porto, Leila Teruko Shirai, Felipe Bandoni De Oliveira & Gabriel Marroig
Allometry is a major determinant of within-population patterns of association among traits and, therefore, a major component of morphological integration studies. Even so, the influence of size variation over evolutionary change has been largely unappreciated. Here, we explore the interplay between allometric size variation, modularity, and life history strategies in the skull from representatives of 35 mammalian families. We start by removing size variation from within-species data and analyzing its influence on integration magnitudes, modularity...

Registration Year

  • 2013
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Resource Types

  • Dataset
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Affiliations

  • Washington University in St. Louis
    8
  • Rice University
    1
  • Duke University
    1
  • University of Georgia
    1
  • University of Haifa
    1
  • University of Sao Paulo
    1
  • University of Illinois at Urbana Champaign
    1
  • Instituto Gulbenkian de Ciência
    1
  • The University of Texas MD Anderson Cancer Center
    1