58 Works

Data from: Facultative endosymbionts mediate dietary breadth in a polyphagous herbivore

Steven M. Wagner, Adam J. Martinez, Yong-Ming Ruan, Kyungsun L. Kim, Paul A. Lenhart, Allison C. Dehnel, Kerry M. Oliver & Jennifer A. White
1. Intraspecific variation in dietary breadth can influence important ecological and evolutionary processes, yet the mechanisms generating this variation are usually unknown. Maternally-transmitted bacterial symbionts frequently infect insect herbivores, and many have been shown to mediate key ecological interactions. For polyphagous herbivores, infection with particular symbionts is often strongly correlated with feeding on particular plant species, suggesting that facultative symbionts might directly determine herbivore food plant specificity. However, previous tests of this hypothesis have returned...

Data from: Species richness, but not phylogenetic diversity, influences community biomass production and temporal stability in a re-examination of 16 grassland biodiversity studies

Patrick Venail, Kevin Gross, Todd H. Oakley, Anita Narwani, Eric Allan, Pedro Flombaum, Forest Isbell, Jasmin Joshi, Peter B. Reich, David Tilman, Jasper Van Ruijven & Bradley J. Cardinale
1.Hundreds of experiments have now manipulated species richness of various groups of organisms and examined how this aspect of biological diversity influences ecosystem functioning. Ecologists have recently expanded this field to look at whether phylogenetic diversity among species, often quantified as the sum of branch lengths on a molecular phylogeny leading to all species in a community, also predicts ecological function. Some have hypothesized that phylogenetic divergence should be a superior predictor of ecological function...

Data from: Phylogenetic signals in host-parasite associations for Neotropical bats and Nearctic desert rodents

Steven J. Presley, Tad Dallas, Brian T. Klingbeil & Michael R. Willig
Hosts and their parasites have strong ecological and evolutionary relationships, with hosts representing habitats and resources for parasites. In the present study, we use approaches developed to evaluate the statistical dependence of species trait values on phylogenetic relationships to determine whether host–parasite relationships (i.e. parasite infections) are contingent on host phylogeny. If host–parasite relationships are contingent on the ability of hosts to provide habitat or resources to parasites, and if host phylogeny is an effective...

Data from: Male burying beetles extend, not reduce, parental care duration when reproductive competition is high

Paul E. Hopwood, Allen J. Moore, Tom Tregenza & Nick J. Royle
Male parents spend less time caring than females in many species with biparental care. The traditional explanation for this pattern is that males have lower confidence of parentage, so they desert earlier in favor of pursuing other mating opportunities. However, one recent alternative hypothesis is that prolonged male parental care might also evolve if staying to care actively improves paternity. If this is the case, an increase in reproductive competition should be associated with increased...

Data from: Kinship, inbreeding, and fine-scale spatial structure influence gut microbiota in a hindgut-fermenting tortoise

Michael L. Yuan, Samantha H. Dean, Ana V. Longo Berrios, Betsie B. Rothermel, Tracey D. Tuberville, Kelly R. Zamudio & Ana V. Longo
Herbivorous vertebrates rely on complex communities of mutualistic gut bacteria to facilitate the digestion of celluloses and hemicelluloses. Gut microbes are often convergent based on diet and gut morphology across a phylogenetically diverse group of mammals. However, little is known about microbial communities of herbivorous hindgut-fermenting reptiles. Here, we investigate how factors at the individual level might constrain the composition of gut microbes in an obligate herbivorous reptile. Using multiplexed 16S rRNA gene sequencing, we...

Data from: Natural variation, differentiation and genetic tradeoffs of ecophysiological traits in response to water limitation in Brachypodium distachyon and its descendent allotetraploid B. hybridum (Poaceae)

Antonio J. Manzaneda, Pedro José Rey, Jill Theresa Anderson, Evan Raskin, Christopher Weiss-Lehman & Thomas Mitchell-Olds
Differences in tolerance to water stress may underlie ecological divergence of closely-related ploidy lineages. However, the mechanistic basis of physiological variation governing eco-geographical cytotype segregation is not well understood. Here, using Brachypodium distachyon and its derived allotetraploid B. hybridum as model, we test the hypothesis that, for heteroploid annuals, ecological divergence of polyploids in drier environments is based on trait differentiation enabling drought-escape. We demonstrate that under water limitation allotetraploids maintain higher photosynthesis and stomatal...

Data from: Evolution of the leaf economics spectrum in herbs: evidence from environmental divergences in leaf physiology across Helianthus (Asteraceae)

Chase M. Mason & Lisa Alayne Donovan
The leaf economics spectrum (LES) describes a major axis of plant functional trait variation worldwide, defining suites of leaf traits aligned with resource-acquisitive to resource-conservative ecological strategies. The LES has been interpreted to arise from leaf-level trade-offs among ecophysiological traits common to all plants. However, it has been suggested that the defining leaf-level trade-offs of the LES may not hold within specific functional groups (e.g., herbs) nor within many groups of closely-related species, which challenges...

Data from: Genotypic diversity and differentiation among populations of two benthic freshwater diatoms as revealed by microsatellites

Pieter Vanormelingen, Katharine M. Evans, David G. Mann, Stacey Lance, Ann-Eline Debeer, Sofie D'Hondt, Tine Verstraete, Luc De Meester & Wim Vyverman
Given their large population sizes and presumed high dispersal capacity, protists are expected to exhibit homogeneous population structure over large spatial scales. On the other hand, the fragmented and short-lived nature of the lentic freshwater habitats that many protists inhabit promotes strong population differentiation. We used microsatellites in two benthic freshwater diatoms, Eunotia bilunaris ‘robust’ and Sellaphora capitata, sampled from within a pond and connected ponds, through isolated ponds from the same region to western...

Data from: Phylogenomics and historical biogeography of the monocot order Liliales: out of Australia and through Antarctica

Thomas J. Givnish, Alejandro Zuluaga, Isabel Marques, Vivienne K. Y. Lam, Marybel Soto Gomez, William J. D. Iles, Mercedes Ames, Daniel Spalink, Jackson R. Moeller, Barbara G. Briggs, Stephanie P. Lyon, Dennis W. Stevenson, Wendy Zomlefer & Sean W. Graham
We present the first phylogenomic analysis of relationships among all ten families of Liliales, based on 75 plastid genes from 35 species in 29 genera, and 97 additional plastomes stratified across angiosperm lineages. We used a supermatrix approach to extend our analysis to 58 of 64 genera of Liliales, and calibrated the resulting phylogeny against 17 fossil dates to produce a new timeline for monocot evolution. Liliales diverged from other monocots 124 Mya and began...

Data from: The effect of size and sex-ratio experiences on reproductive competition in Nicrophorus vespilloides burying beetles in the wild

Paul E. Hopwood, Allen J. Moore, Tom Tregenza & Nick J. Royle
Male parents face a choice: should they invest more in caring for offspring or in attempting to mate with other females? The most profitable course depends on the intensity of competition for mates, which is likely to vary with the population sex ratio. However, the balance of pay-offs may vary among individual males depending on their competitive prowess or attractiveness. We tested the prediction that sex ratio and size of the resource holding male provide...

Data from: Fine-scale ecological and genetic population structure of two whitefish (Coregoninae) species in the vicinity of industrial thermal emissions

Carly F. Graham, Rebecca L. Eberts, Thomas D. Morgan, Douglas R. Boreham, Stacey L. Lance, Richard G. Manzon, Jessica A. Martino, Sean M. Rogers, Joanna Y. Wilson & Christopher M. Somers
Thermal pollution from industrial processes can have negative impacts on the spawning and development of cold-water fish. Point sources of thermal effluent may need to be managed to avoid affecting discrete populations. Correspondingly, we examined fine-scale ecological and genetic population structure of two whitefish species (Coregonus clupeaformis and Prosopium cylindraceum) on Lake Huron, Canada, in the immediate vicinity of thermal effluent from nuclear power generation. Niche metrics using δ13C and δ15N stable isotopes showed high...

Data from: The stratigraphy of mass extinction

Steven M. Holland, Mark E. Patzkowksy & Mark E. Patzkowsky
Patterns of last occurrences of fossil species are often used to infer the tempo and timing of mass extinction, even though last occurrences generally precede the time of extinction. Numerical simulations with constant extinction demonstrate that last occurrences are not randomly distributed, but tend to cluster at subaerial unconformities, surfaces of forced regression, flooding surfaces and intervals of stratigraphical condensation, all of which occur in predictable stratigraphical positions. This clustering arises not only from hiatuses...

Data from: How a GNSS receiver is held may affect static horizontal position accuracy

Steven A. Weaver, Zennure Ucar, Pete Bettinger & Krista Merry
The static horizontal position accuracy of a mapping-grade GNSS receiver was tested in two forest types over two seasons, and subsequently was tested in one forest type against open sky conditions in the winter season. The main objective was to determine whether the holding position during data collection would result in significantly different static horizontal position accuracy. Additionally, we wanted to determine whether the time of year (season), forest type, or environmental variables had an...

Data from: Resolving relationships within the palm subfamily Arecoideae (Arecaceae) using next-gen derived plastid sequences

Jason R. Comer, Wendy B. Zomlefer, Craig F. Barrett, Jerrold I. Davis, Dennis W. Stevenson, Karolina Heyduk & James H. Leebens-Mack
Premise of the study: Several studies have incorporated molecular and morphological data to study the phylogeny of the palms (Arecaceae), but some relationships within the family remain ambiguous—particularly those within Arecoideae, the most diverse subfamily including coconut and oil palm. Here, two next-generation, targeted plastid-enrichment methods were compared and used to elucidate Arecoideae phylogeny. Methods: Next-generation sequencing techniques were used to generate a plastid genome data set. Long range PCR and hybrid gene capture were...

Data from: Protein pheromone expression levels predict and respond to the formation of social dominance networks

Adam C. Nelson, Christopher B. Cunningham, James S. Ruff & Wayne K. Potts
Communication signals are key regulators of social networks and are thought to be under selective pressure to honestly reflect social status, including dominance status. The odours of dominants and nondominants differentially influence behaviour, and identification of the specific pheromones associated with, and predictive of, dominance status is essential for understanding the mechanisms of network formation and maintenance. In mice, major urinary proteins (MUPs) are excreted in extraordinary large quantities and expression level has been hypothesized...

Data from: Patterns, causes, and consequences of defensive microbiome dynamics across multiple scales

Andrew H. Smith, Piotr Lukasik, Michael P. O'Connor, Amanda Lee, Garrett Mayo, Milton T. Drott, Steven Doll, Robert Tuttle, Rachael A. DiSciullo, Andrea Messina, Kerry M. Oliver & Jacob A. Russell
The microbiome can significantly impact host phenotypes and serve as an additional source of heritable genetic variation. While patterns across eukaryotes are consistent with a role for symbiotic microbes in host macroevolution, few studies have examined symbiont-driven host evolution or the ecological implications of a dynamic microbiome across temporal, spatial or ecological scales. The pea aphid, Acyrthosiphon pisum, and its eight heritable bacterial endosymbionts have served as a model for studies on symbiosis and its...

Data from: Early warning signals of extinction in deteriorating environments

John M. Drake & Blaine D. Griffen
During the decline to extinction, animal populations may present dynamical phenomena not exhibited by robust populations. Some of these phenomena, such as the scaling of demographic variance, are related to small size, whereas others result from density-dependent nonlinearities. Although understanding the causes of population extinction has been a central problem in theoretical biology for decades, the ability to anticipate extinction has remained elusive. Here we argue that the causes of a population’s decline are central...

Data from: An examination of fitness costs of glyphosate resistance in the common morning glory, Ipomoea purpurea

Catherine L. Debban, Sara Okum, Kathleen E. Pieper, Ariana Wilson & Regina S. Baucom
Fitness costs are frequently invoked to explain the presence of genetic variation underlying plant defense across many types of damaging agents. Despite the expectation that costs of resistance are prevalent, however, they have been difficult to detect in nature. To examine the potential that resistance confers a fitness cost, we examined the survival and fitness of genetic lines of the common morning glory, Ipomoea purpurea, that diverged in the level of resistance to the herbicide...

Data from: Reconstructing changes in the genotype, phenotype, and climatic niche of an introduced species

Daniel Z. Atwater, U. Uzay Sezen, Valorie Goff, Wenqian Kong, Andrew H. Paterson & Jacob N. Barney
An introduced species must contend with enormous environmental variation in its introduced range. In this study, we use niche models and ordination analyses to reconstruct changes in genotype, phenotype, and climatic niche of Johnsongrass (Sorghum halepense), which is regarded as one of the world's most threatening invasive plants. In the United States, Johnsongrass has rapidly evolved within- and among-population genetic diversity; our results show that genetic differentiation in expanding Johnsongrass populations has resulted in phenotypic...

Data from: Phylogenomic analyses of Sabal (Arecaceae) species relationships using targeted sequence capture

Karolina Heyduk, Dorset W. Trapnell, Craig F. Barrett & Jim Leebens-Mack
With the increasing availability of high-throughput sequencing, phylogenetic analyses are no longer constrained by the limited availability of a few loci. Here, we describe a sequence capture methodology, which we used to collect data for analyses of diversification within Sabal (Arecaceae), a palm genus native to the south-eastern USA, Caribbean, Bermuda and Central America. RNA probes were developed and used to enrich DNA samples for putatively low copy nuclear genes and the plastomes for all...

Data from: Maternal effects and maternal selection arising from variation in allocation of free amino acid to eggs

Devi Newcombe, John Hunt, Christopher Mitchell & Allen J. Moore
Maternal provisioning can have profound effects on offspring phenotypes, or maternal effects, especially early in life. One ubiquitous form of provisioning is in the makeup of egg. However, only a few studies examine the role of specific egg constituents in maternal effects, especially as they relate to maternal selection (a standardized selection gradient reflecting the covariance between maternal traits and offspring fitness). Here, we report on the evolutionary consequences of differences in maternal acquisition and...

Data from: Rodent reservoirs of future zoonotic diseases

Barbara A. Han, John Paul Schmidt, Sarah E. Bowden & John M. Drake
Forecasting reservoirs of zoonotic disease is a pressing public health priority. We apply machine learning to datasets describing the biological, ecological, and life history traits of rodents, which collectively carry a disproportionate number of zoonotic pathogens. We identify particular rodent species predicted to be novel zoonotic reservoirs and geographic regions from which new emerging pathogens are most likely to arise. We also describe trait profiles—complexes of biological features—that distinguish reservoirs from nonreservoirs. Generally, the most...

Data from: Reproductive character displacement of female mate preferences for male cuticular hydrocarbons in Drosophila subquinaria

Howard D. Rundle & Kelly A. Dyer
Several lines of evidence implicate sexual isolation in both initiating and completing the speciation process. While its existence is straightforward to demonstrate, understanding the evolution of sexual isolation requires identifying the underlying phenotypes responsible so that we can determine how these have diverged. Here we study geographic variation in female mate preferences for male sexual displays in the fly Drosophila subquinaria. Female D. subquinaria that are sympatric with its sister species D. recens discriminate strongly...

Data from: Changes in data sharing and data reuse practices and perceptions among scientists worldwide

Carol Tenopir, Elizabeth D. Dalton, Suzie Allard, Mike Frame, Ivanka Pjesivac, Ben Birch, Danielle Pollock & Kristina Dorsett
The incorporation of data sharing into the research lifecycle is an important part of modern scholarly debate. In this study, the DataONE Usability and Assessment working group addresses two primary goals: To examine the current state of data sharing and reuse perceptions and practices among research scientists as they compare to the 2009/2010 baseline study, and to examine differences in practices and perceptions across age groups, geographic regions, and subject disciplines. We distributed surveys to...

Data from: Costs of resistance and infection by a generalist pathogen

Tad Dallas, Mathieu Holtackers & John M. Drake
Pathogen infection is typically costly to hosts, resulting in reduced fitness. However, pathogen exposure may also come at a cost even if the host does not become infected. These fitness reductions, referred to as “resistance costs”, are inducible physiological costs expressed as a result of a trade-off between resistance to a pathogen and aspects of host fitness (e.g., reproduction). Here, we examine resistance and infection costs of a generalist fungal pathogen (Metschnikowia bicuspidata) capable of...

Registration Year

  • 2015

Resource Types

  • Dataset


  • University of Georgia
  • University of Exeter
  • University of Michigan-Ann Arbor
  • Oregon State University
  • Cornell University
  • The University of Texas at Austin
  • University of California System
  • Duke University
  • Cary Institute of Ecosystem Studies
  • University of Wisconsin-Madison