16 Works

Data from: Sympatric, temporally isolated populations of the pine white butterfly Neophasia menapia, are morphologically and genetically differentiated

Katherine L. Bell, Christopher A. Hamm, Arthur M. Shapiro & Chris C. Nice
Temporal isolation remains an understudied, and potentially under-appreciated, mechanism of reproductive isolation. Phenological differences have been discovered in populations of the pine white butterfly (Neophasia menapia), a typically univoltine species found throughout western North America. At two locations in the Coast Range of California there are two periods of adult emergence per year, one in early summer (July) and one in late summer/autumn (September/October). Differences in flight time are accompanied by differences in wing shape...

Data from: Loci contributing to boric acid toxicity in two reference populations of Drosophila melanogaster

Michael A. Najarro, Jennifer L. Hackett & Stuart J. Macdonald
Populations maintain considerable segregating variation in the response to toxic, xenobiotic compounds. To identify variants associated with resistance to boric acid, a commonly-used household insecticide with a poorly understood mechanism of action, we assayed thousands of individuals from hundreds of strains. Using the Drosophila Synthetic Population Resource (DSPR), a multi-parental population (MPP) of inbred genotypes, we mapped six QTL to short genomic regions containing few protein-coding genes (3–188), allowing us to identify plausible candidate genes...

Data from: Antagonistic pleiotropy and mutation accumulation contribute to age-related decline in stress response

Elizabeth Rose Everman & Theodore J. Morgan
As organisms age, the effectiveness of natural selection weakens, leading to age-related decline in fitness-related traits. The evolution of age-related changes associated with senescence is likely influenced by mutation accumulation (MA) and antagonistic pleiotropy (AP). MA predicts that age-related decline in fitness components is driven by age-specific sets of alleles, non-negative genetic correlations within trait across age, and an increase in the coefficient of genetic variance. AP predicts that age-related decline in a trait is...

Data from: Negative plant-phyllosphere feedbacks in native Asteraceae hosts – a novel extension of the plant-soil feedback framework

Briana K. Whitaker, Jonathan T. Bauer, James D. Bever & Keith Clay
Over the past 25 years, the plant-soil feedback (PSF) framework has catalyzed our understanding of how belowground microbiota impact plant fitness and species coexistence. Here, we apply a novel extension of this framework to microbiota associated with aboveground tissues, termed ‘plant-phyllosphere feedback (PPFs)’. In parallel greenhouse experiments, rhizosphere and phyllosphere microbiota of con- and heterospecific hosts from four species were independently manipulated. In a third experiment, we tested the combined effects of soil and phyllosphere...

Data from: Species delimitation with gene flow: a methodological comparison and population genomics approach to elucidate cryptic species boundaries in Malaysian Torrent Frogs

Kin Onn Chan, Alana M. Alexander, Jesse L. Grismer, Yong-Chao Su, Evan S.H. Quah, Rafe M. Brown, Evan S. H. Quah & L. Lee Grismer
Accurately delimiting species boundaries is a non-trivial undertaking that can have significant effects on downstream inferences. We compared the efficacy of commonly-used species delimitation methods (SDMs) and a population genomics approach based on genome-wide single nucleotide polymorphisms (SNPs) to assess lineage separation in the Malaysian Torrent Frog Complex currently recognized as a single species (Amolops larutensis). First, we used morphological, mitochondrial DNA and genome-wide SNPs to identify putative species boundaries by implementing non-coalescent and coalescent-based...

Data from: The geography of spatial synchrony

Jonathan A. Walter, Lawrence W. Sheppard, Thomas L. Anderson, Jude H. Kastens, Ottar N. Bjornstad, Andrew M. Liebhold & Daniel C. Reuman
Spatial synchrony, defined as correlated temporal fluctuations among populations, is a fundamental feature of population dynamics, but many aspects of synchrony remain poorly understood. Few studies have examined detailed geographical patterns of synchrony; instead most focus on how synchrony declines with increasing linear distance between locations, making the simplifying assumption that distance decay is isotropic. By synthesising and extending prior work, we show how geography of synchrony, a term which we use to refer to...

Data from: Using geography to infer the importance of dispersal for the synchrony of freshwater plankton

Thomas L. Anderson, Jonathan A. Walter, Todd D. Levine, Susan P. Hendricks, Karla L. Johnston, David S. White & Daniel C. Reuman
Spatial synchrony in population dynamics is a ubiquitous ecological phenomenon that can result from predator-prey interactions, synchronized environmental variation (Moran effects), or dispersal. Of these, dispersal historically has been the least well studied in natural systems, partly because of the difficulty in quantifying dispersal in situ. We hypothesized that dispersal routes of plankton were based on the major and consistent water current movements in Kentucky Lake, a large reservoir in western Kentucky, USA. Then, using...

Data from: Reconstructing ecological niche evolution when niches are incompletely characterized

Erin E. Saupe, Narayani Barve, Hannah L. Owens, Jacob C. Cooper, Peter A. Hosner & A. Townsend Peterson
Evolutionary dynamics of abiotic ecological niches across phylogenetic history can shed light on large-scale biogeographic patterns, macroevolutionary rate shifts, and the relative ability of lineages to respond to global change. An unresolved question is how best to represent and reconstruct evolution of these complex traits at coarse spatial scales through time. Studies have approached this question by integrating phylogenetic comparative methods with niche estimates inferred from correlative and other models. However, methods for estimating niches...

Data from: Hurdiid radiodontans from the middle Cambrian (Series 3) of Utah

Stephen Pates, Allison C. Daley & Bruce S. Lieberman
Radiodontan body elements, some belonging to Peytoia and Hurdia and some unassigned, have been reported from the Langston Formation (Spence Shale Member), Wheeler Formation, and Marjum Formation of the middle Cambrian (Series 3) of Utah. These identifications are reassessed in light of recent work on the morphology of the radiodontan Hurdia. New specimens of Hurdia are identified from the Spence Shale, representing mouthparts (oral cones), cephalic carapace H-elements, frontal appendages, and a single isolated swimming...

Data from: Landscape and environmental influences on Mycobacterium ulcerans distribution among aquatic sites in Ghana

Shannon M. Pileggi, Heather Jordan, Julie A. Clennon, Ellen Whitney, M. Eric Benbow, Richard Merritt, Mollie McIntosh, Ryan Kimbirauskas, Pamela Small, Daniel Boayke, Charles Quaye, Jiaguo Qi, Lindsay Campbell, Jenni Gronseth, Edwin Ampadu, William Opare, Lance Waller, Lance A. Waller & Daniel Boakye
Buruli ulcer, caused by Mycobacterium ulcerans, is highly endemic in West Africa. While the mode of transmission is unknown, many studies associate Buruli ulcer with different types of water exposure. We present results from the largest study to date to test for M. ulcerans in aquatic sites and identify environmental attributes associated with its presence. Environmental samples from 98 aquatic sites in the Greater Accra, Ashanti, and Volta regions of Ghana were tested for the...

Data from: Can asexuality confer a short term advantage? Investigating apparent biogeographic success in the apomictic triploid fern Myriopteris gracilis

David A. Wickell, Michael D. Windham, Xiaofei Wang, Stuart J. Macdonald & James B. Beck
Premise of the study: Although asexual taxa are generally seen as evolutionary dead ends, asexuality appears to provide a short-term benefit in some taxa, including a wider geographic distribution compared to sexual relatives. However, this may be an illusion created by multiple, morphologically cryptic, asexual lineages, each occupying a relatively small area. In this study we investigate the role of multiple lineages in the biogeography of Myriopteris gracilis Fée (Pteridaceae), a North American apomictic triploid...

Data from: Do brachiopods show substrate-related phenotypic variation? A case study from the Burgess Shale

Timothy P. Topper, Luke C. Strotz, Christian B. Skovsted & Lars E. Holmer
As sessile, benthic filter feeders, brachiopods share an intimate relationship with their chosen substrate. Individuals of Micromitra burgessensis in the Burgess Shale Formation are preserved in life position, attached to a range of hard substrates, including skeletal debris, conspecific brachiopods, sponges and enigmatic tubes. Here we investigate the phenotypic variability of M. burgessensis associated with differing substrate attachments. We apply geometric morphometrics to test for variation by plotting landmarks on the exterior of ventral and...

Data from: Using data from related species to overcome spatial sampling bias and associated limitations in ecological niche modeling

Huijie Qiao, Andrew Townsend Peterson, Liqiang Ji & Junhua Hu
1. Ecological niche modeling (ENM) is used widely to aid in conservation planning and management, often focusing on rare species characterized by the biased observations associated with restricted geographic ranges, habitat specialization, small population size, and limited natural history information. Generating reliable ENMs for such species is a challenge, however, owing to issues that arise from spatial sampling bias, such as model inaccuracy and overfitting. Here, using virtual scenarios, we assess the utility of integrating...

Data from: Phenology differences between native and novel exotic-dominated grasslands rival the effects of climate change

Brian J. Wilsey, Leanne M. Martin & Andrew D. Kaul
1. Novel ecosystems can differ from the native systems they replaced. We used phenology measures to compare ecosystem functioning between novel exotic-dominated and native-dominated grasslands in the central US. 2. Phenology, or timing of biological events, is affected by climate and land use changes. We assessed how phenology shifts are being altered by exotic species dominance by comparing remotely sensed Normalized Difference Vegetation Index (NDVI) within growing seasons at exotic- and native-dominated sites along a...

Data from: Did true frogs ‘dispersify’?

Kin Onn Chan & Rafe M. Brown
The interplay between range expansion and concomitant diversification is of fundamental interest to evolutionary biologists, particularly when linked to intercontinental dispersal and/or large scale extinctions. The evolutionary history of true frogs has been characterized by circumglobal range expansion. As a lineage that survived the Eocene–Oligocene extinction event (EOEE), the group provides an ideal system to test the prediction that range expansion triggers increased net diversification. We constructed the most densely sampled, time-calibrated phylogeny to date...

Data from: Monarch butterfly population decline in North America: identifying the threatening processes

Wayne E. Thogmartin, Ruscena Wiederholt, Karen Oberhauser, Ryan G. Drum, Jay E. Diffendorfer, Sonia Altizer, Orley R. Taylor, John Pleasants, Darius Semmens, Brice Semmens, Richard Erickson, Kaitlin Libby & Laura Lopez-Hoffman
The monarch butterfly (Danaus plexippus) population in North America has sharply declined over the last two decades. Despite rising concern over the monarch butterfly's status, no comprehensive study of the factors driving this decline has been conducted. Using partial least-squares regressions and time-series analysis, we investigated climatic and habitat-related factors influencing monarch population size from 1993 to 2014. Potential threats included climatic factors, habitat loss (milkweed and overwinter forest), disease and agricultural insecticide use (neonicotinoids)....

Registration Year

  • 2017

Resource Types

  • Dataset


  • University of Kansas
  • Iowa State University
  • University of Oxford
  • California Polytechnic State University
  • Wichita State University
  • Duke University
  • University of Georgia
  • University of California, San Diego
  • University of Minnesota
  • Northern Research Station