13 Works

Data from: Seed fates in crop-wild hybrid sunflowers: crop allele and maternal effects

Brian A. Pace, Helen M. Alexander, Jason D. Emry & Kristin L. Mercer
Domestication has resulted in selection upon seed traits found in wild populations, yet crop-wild hybrids retain some aspects of both parental phenotypes. Seed fates of germination, dormancy, and mortality can influence the success of crop allele introgression in crop-wild hybrid zones, especially if crop alleles or crop-imparted seed coverings result in out-of-season germination. We performed a seed burial experiment using crop, wild, and diverse hybrid sunflower (Helianthus annuus) cross types to test how a cross...

Data from: Novel molecular approach demonstrates turbid river plumes reduce predation mortality on larval fish

Lucia B. Carreon-Martinez, Kyle W. Wellband, Timothy B. Johnson, Stuart A. Ludsin & Daniel D. Heath
Turbidity associated with river plumes is known to affect the search ability of visual predators and thus can drive “top-down” impacts on prey populations in complex ecosystems; however, traditional quantification of predator-prey relationships (i.e., stomach content analysis) often fail with larval fish due to rapid digestion rates. Herein, we use novel molecular genetic methods to quantify larval Yellow Perch (YP) in predator stomachs in western Lake Erie to test the hypothesis that turbidity drives variation...

Data from: Crinoid assemblages from the Fort Payne Formation (late Osagean, early Viséan, Mississippian) from Kentucky, Tennessee, and Alabama

Elyssa B. Krivicich, William I. Ausich & David L. Meyer
The Mississippian Fort Payne Formation of Kentucky, Tennessee, and Alabama is well known for its abundant crinoids and a diverse array of autochthonous and allochthonous carbonate and siliciclastic facies. Using Principal Coordinate Analysis and Non-Metric Multidimensional Scaling, it is demonstrated that distinct, contemporaneous, and geographically adjacent autochthonous facies in south-central Kentucky supported distinct crinoid assemblages. The two carbonate buildup facies had different assemblages dominated by camerate crinoids, carbonate channel-fill deposits were dominated by advanced cladid...

Data from: Fitness of crop-wild hybrid sunflowers under competitive conditions: implications for crop-to-wild introgression

Kristin L. Mercer, D. Jason Emry, Allison A. Snow, Matthew A. Kost, Brian A. Pace & Helen M. Alexander
Understanding the likelihood and extent of introgression of novel alleles in hybrid zones requires comparison of lifetime fitness of parents and hybrid progeny. However, fitness differences among cross types can vary depending on biotic conditions, thereby influencing introgression patterns. Based on past work, we predicted that increased competition would enhance introgression between cultivated and wild sunflower (Helianthus annuus) by reducing fitness advantages of wild plants. To test this prediction, we established a factorial field experiment...

Data from: Gene prediction and annotation in Penstemon (Plantaginaceae): a workflow for marker development from extremely low-coverage genome sequencing

Paul D. Blischak, Aaron J. Wenzel & Andrea D. Wolfe
Premise of the study: Penstemon (Plantaginaceae) is a large and diverse genus endemic to North America. However, determining the phylogenetic relationships among its 280 species has been difficult due to its recent evolutionary radiation. The development of a large, multilocus data set can help to resolve this challenge. Methods: Using both previously sequenced genomic libraries and our own low-coverage whole-genome shotgun sequencing libraries, we used the MAKER2 Annotation Pipeline to identify gene regions for the...

Data from: Assembly patterns of mixed-species avian flocks in the Andes

Gabriel J. Z. Colorado, Amanda D. Rodewald & Gabriel J. Colorado
The relative contribution of deterministic and stochastic processes in the assembly of biotic communities is a central issue of controversy in community ecology. However, several studies have shown patterns of species segregation that are consistent with the hypothesis that deterministic factors such as competition and niche-partitioning structure species assemblages in animal communities. Community assembly provides a theoretical framework for understanding these processes, but it has been seldom applied to social aggregations within communities. In this...

Data from: Stepping in the direction of the fall: the next foot placement can be predicted from current upper body state in steady-state walking

Yang Wang & Manoj Srinivasan
During human walking, perturbations to the upper body can be partly corrected by placing the foot appropriately on the next step. Here, we infer aspects of such foot placement dynamics using step-to-step variability over hundreds of steps of steady-state walking data. In particular, we infer dependence of the ‘next’ foot position on upper body state at different phases during the ‘current’ step. We show that a linear function of the hip position and velocity state...

Data from: Historical species distribution models predict species limits in western Plethodon salamanders

Tara A. Pelletier, Charlie Crisafulli, Steve Wagner, Amanda J. Zellmer & Bryan C. Carstens
Allopatry is commonly used to predict boundaries in species delimitation investigations under the assumption that currently allopatric distributions are indicative of reproductive isolation; however, species ranges are known to change over time. Incorporating a temporal perspective of geographic distributions should improve species delimitation; to explore this, we investigate three species of western Plethodon salamanders that have shifted their ranges since the end of the Pleistocene. We generate species distribution models (SDM) of the current range,...

Data from: Application of ITS2 metabarcoding to determine the provenance of pollen collected by honey bees in an agroecosystem

Rodney T. Richardson, Chia-Hua Lin, Douglas B. Sponsler, Juan O. Quijia, Karen Goodell & Reed M. Johnson
Premise of the study: Melissopalynology, the identification of bee-collected pollen, provides insight into the flowers exploited by foraging bees. Information provided by melissopalynology could guide floral enrichment efforts aimed at supporting pollinators, but it has rarely been used because traditional methods of pollen identification are laborious and require expert knowledge. We approach melissopalynology in a novel way, employing a molecular method to study the pollen foraging of honey bees (Apis mellifera) in a landscape dominated...

Data from: Genetic diversity and population structure of wild/weedy eggplant (Solanum insanum L., Solanaceae) in southern India: implications for conservation

Evans Mutegi, Allison A. Snow, Rajkumar Mathu, Remy Pasquest, Hopeland Ponniah, Marie-Christine Daunay, Priya Davidar & Muthu Rajkumar
Mutegi et al eggplant SSR dataAn excel file with microsatellite data for the 10 natural populations of wild/weedy eggplant (S. insanum) and the 3 cultivar populations studied. A sheet with metadata to describe the fields is included.Mutegi et al Eggplant data1.xlsx

Data from: Model choice for phylogeographic inference using a large set of models

Tara A. Pelletier & Bryan C. Carstens
Model-based analyses are common in phylogeographic inference because they parameterize processes such as population division, gene flow and expansion that are of interest to biologists. Approximate Bayesian Computation is a model-based approach that can be customized to any empirical system and used to calculate the relative posterior probability of several models, provided that suitable models can be identified for comparison. The question of how to identify suitable models is explored using data from Plethodon idahoensis,...

Data from: Evolutionary basis of mitonuclear discordance between sister species of mole salamanders (Ambystoma sp.)

Robert D. Denton, Laura J. Kenyon, Katherine R. Greenwald, H. Lisle Gibbs & H.Lisle Gibbs
Distinct genetic markers should show similar patterns of differentiation between species reflecting their common evolutionary histories yet there are increasing examples of differences in the biogeographic distribution of species-specific nuclear (nuDNA) and mitochondrial DNA (mtDNA) variants within and between species. Identifying the evolutionary processes that underlie these anomalous patterns of genetic differentiation is an important goal. Here we analyze the putative mitonuclear discordance observed between sister species of mole salamanders (Ambystoma barbouri and A. texanum)...

Data from: QTL mapping identifies candidate alleles involved in adaptive introgression and range expansion in a wild sunflower

Kenneth D. Whitney, Karl W. Broman, Nolan C. Kane, Stephen M. Hovick, Rebecca A. Randell & Loren H. Rieseberg
The wild North American sunflowers Helianthus annuus and H. debilis are participants in one of the earliest identified examples of adaptive trait introgression, and the exchange is hypothesized to have triggered a range expansion in H. annuus. However, the genetic basis of the adaptive exchange has not been examined. Here, we combine quantitative trait locus (QTL) mapping with field measurements of fitness to identify candidate H. debilis QTL alleles likely to have introgressed into H....

Registration Year

  • 2014

Resource Types

  • Dataset


  • The Ohio State University
  • University of Kansas
  • Washburn University
  • Pondicherry University
  • University of Cincinnati
  • University of Windsor
  • Occidental College
  • French National Institute for Agricultural Research
  • University of Wisconsin-Madison
  • University of Paris-Sud