58 Works

Data from: Honey bee colonies headed by hyperpolyandrous queens have improved brood rearing efficiency and lower infestation rates of parasitic Varroa mites

Keith S. Delaplane, Stéphane Pietravalle, Mike A. Brown & Giles E. Budge
A honey bee queen mates on wing with an average of 12 males and stores their sperm to produce progeny of mixed paternity. The degree of a queen’s polyandry is positively associated with measures of her colony’s fitness, and observed distributions of mating number are evolutionary optima balancing risks of mating flights against benefits to the colony. Effective mating numbers as high as 40 have been documented, begging the question of the upper bounds of...

Data from: Specificity and strain-typing capabilities of Nanorod Array-Surface Enhanced Raman Spectroscopy for Mycoplasma pneumoniae detection

Kelley C. Henderson, Alvaro J. Benitez, Amy E. Ratliff, Donna M. Crabb, Edward S. Sheppard, Jonas M. Winchell, Richard A. Dluhy, Ken B. Waites, T. Prescott Atkinson & Duncan C. Krause
Mycoplasma pneumoniae is a cell wall-less bacterial pathogen of the human respiratory tract that accounts for > 20% of all community-acquired pneumonia (CAP). At present the most effective means for detection and strain-typing is quantitative polymerase chain reaction (qPCR), which can exhibit excellent sensitivity and specificity but requires separate tests for detection and genotyping, lacks standardization between available tests and between labs, and has limited practicality for widespread, point-of-care use. We have developed and previously...

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: 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: 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: 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: 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 & Marybel Soto Gomez
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: 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: 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: Evolution of the leaf economics spectrum in herbs: evidence from environmental divergences in leaf physiology across Helianthus (Asteraceae)

Chase M. Mason, Lisa Alayne Donovan & Lisa A. 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: 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 & Jill T. Anderson
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: 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: 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: 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, A. C. Nelson, C. B. Cunningham, J. S. Ruff & W. 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: 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: 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, A. J. Moore, P. E. Hopwood, T. Tregenza & N. 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: 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, A. J. Moore, P. E. Hopwood, T. Tregenza & N. 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: 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: 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: Asymmetrical sexual isolation but no postmating isolation between the closely related species Drosophila suboccidentalis and Drosophila occidentalis

Nicholas J. Arthur & Kelly A. Dyer
Background: During the speciation process several types of isolating barriers can arise that limit gene flow between diverging populations. Studying recently isolated species can inform our understanding of how and when these barriers arise, and which barriers may be most important to limiting gene flow. Here we focus on Drosophila suboccidentalis and D. occidentalis, which are closely related mushroom-feeding species that inhabit western North America and are not known to overlap in geographic range. We...

Data from: Elucidating steroid alkaloid biosynthesis in Veratrum californicum: production of verazine in Sf9 cells

Megan M. Augustin, Dan R. Ruzicka, Ashutosh K. Shukla, Jorg M. Augustin, Courtney M. Starks, Mark O'Neil-Johnson, Michael R. McKain, Bradley S. Evans, Matthew D. Barrett, Ann Smithson, Gane Ka-Shu Wong, Michael K. Deyholos, Patrick P. Edger, J. Chris Pires, James H. Leebens-Mack, Dave A. Mann, Toni M. Kutchan & Matt D. Barrett
Steroid alkaloids have been shown to elicit a wide range of pharmacological effects that include anticancer and antifungal activities. Understanding the biosynthesis of these molecules is essential to bioengineering for sustainable production. Herein, we investigate the biosynthetic pathway to cyclopamine, a steroid alkaloid that shows promising antineoplastic activities. Supply of cyclopamine is limited, as the current source is solely derived from wild collection of the plant Veratrum californicum. To elucidate the early stages of the...

Data from: Genetic analysis of inflorescence and plant height components in sorghum (Panicoidae) and comparative genetics with rice (Oryzoidae)

Dong Zhang, Wenqian Kong, Jon Robertson, Valorie H. Goff, Ethan Epps, Alexandra Kerr, Gabriel Mills, Jay Cromwell, Yelena Lugin, Christine Phillips & Andrew H. Paterson
Background: Domestication has played an important role in shaping characteristics of the inflorescence and plant height in cultivated cereals. Taking advantage of meta-analysis of QTLs, phylogenetic analyses in 502 diverse sorghum accessions, GWAS in a sorghum association panel (n = 354) and comparative data, we provide insight into the genetic basis of the domestication traits in sorghum and rice. Results: We performed genome-wide association studies (GWAS) on 6 traits related to inflorescence morphology and 6...

Data from: Context-dependent survival, fecundity, and predicted population-level consequences of brucellosis in African buffalo

Erin E. Gorsich, Vanessa O. Ezenwa, Paul C. Cross, Roy G. Bengis & Anna E. Jolles
1. Chronic infections may have negative impacts on wildlife populations, yet their effects are difficult to detect in the absence of long-term population monitoring. Brucella abortus, the bacteria responsible for bovine brucellosis, causes chronic infections and abortions in wild and domestic ungulates, but its impact on population dynamics is not well understood. 2. We report infection patterns and fitness correlates of bovine brucellosis in African buffalo based on (1) 7 years of cross-sectional disease surveys...

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