66 Works

Data from: Character evolution and missing (morphological) data across Asteridae

Gregory W. Stull, Melanie Schori, Douglas E. Soltis & Pamela S. Soltis
Premise of the study: Our current understanding of flowering plant phylogeny provides an excellent framework for exploring various aspects of character evolution through comparative analyses. However, attempts to synthesize this phylogenetic framework with extensive morphological datasets have been surprisingly rare. Here, we explore character evolution in Asteridae (asterids), a major angiosperm clade, using an extensive morphological data set and a well-resolved phylogeny. Methods: We scored 15 phenotypic characters (spanning chemistry, vegetative anatomy, and floral, fruit,...

Data from: Environmentally-induced noise dampens and reddens with increasing trophic level in a complex food web

Anna Kuparinen, Tommi Perälä, Neo D. Martinez & Fernanda S. Valdovinos
Stochastic variability of key abiotic factors including temperature, precipitation and the availability of light and nutrients greatly influences species’ ecological function and evolutionary fate. Despite such influence, ecologists have typically ignored the effect of abiotic stochasticity on the structure and dynamics of ecological networks. Here we help to fill that gap by advancing the theory of how abiotic stochasticity, in the form of environmental noise, affects the population dynamics of species within food webs. We...

Data from: Quantifying uncertainty due to fission-fusion dynamics as a component of social complexity

Gabriel Ramos-Fernandez, Andrew J. King, Jacinta C. Beehner, Thore J. Bergman, Margaret C. Crofoot, Anthony Di Fiore, Julia Lehmann, Colleen M. Schaffner, Noah Snyder-Mackler, Klaus Zuberbühler, Filippo Aureli & Denis Boyer
Groups of animals (including humans) may show flexible grouping patterns, in which temporary aggregations or subgroups come together and split, changing composition over short temporal scales, i.e. fission and fusion). A high degree of fission-fusion dynamics may constrain the regulation of social relationships, introducing uncertainty in interactions between group members. Here we use Shannon's entropy to quantify the predictability of subgroup composition for three species known to differ in the way their subgroups come together...

Data from: Synopsis and taxonomic revision of three genera in the snake tribe Sonorini

Christian L. Cox, Alison R. Davis Rabosky, Iris A. Holmes, Jacobo Reyes-Velasco, Corey E. Roelke, Eric N. Smith, Oscar Flores-Villel, Jimmy A. McGuire & Jonathan A. Campbell
Delimiting species is a crucial goal of integrative biology, and yet can be misled by homoplasy and high levels of morphological variation. The snake tribe Sonorini contains three genera that have long confounded taxonomists: Chilomeniscus, Chionactis and Sonora. Dynamic colour evolution in this group, including rampant geographic variation in colour and colour polymorphism, has led to a chaotic taxonomy. We used mitochondrial and high-throughput nuclear data (ddRADseq) and complete taxonomic sampling of each genus to...

Data from: Human birth seasonality: latitudinal gradient and interplay with childhood disease dynamics

M. Martinez-Bakker, K. M. Bakker, A. A. King & P. Rohani
More than a century of ecological studies have demonstrated the importance of demography in shaping spatial and temporal variation in population dynamics. Surprisingly, the impact of seasonal recruitment on infectious disease systems has received much less attention. Here, we present data encompassing 78 years of monthly natality in the USA, and reveal pronounced seasonality in birth rates, with geographical and temporal variation in both the peak birth timing and amplitude. The timing of annual birth...

Data from: BAMM at the court of false equivalency: a response to Meyer and Wiens

Daniel L. Rabosky
The software program BAMM has been widely used to study rates of speciation, extinction, and phenotypic evolution on phylogenetic trees. The program implements a model-based clustering algorithm to identify clades that share common macroevolutionary rate dynamics and to estimate parameters. A recent simulation study by Meyer and Wiens (M&W) claimed that (i) a simple inference framework ("MS") performs much better than BAMM, and (ii) evolutionary rates inferred with BAMM are poorly correlated with true rates....

Data from: Crop pests and predators exhibit inconsistent responses to surrounding landscape composition

Daniel S. Karp, Rebecca Chaplin-Kramer, Timothy D. Meehan, Emily A. Martin, Fabrice DeClerck, Heather Grab, Claudio Gratton, Lauren Hunt, Ashley E. Larsen, Alejandra Martínez-Salinas, Megan E. O’Rourke, Adrien Rusch, Katja Poveda, Mattias Jonsson, Jay A. Rosenheim, Nancy A. Schellhorn, Teja Tscharntke, Stephen D. Wratten, Wei Zhang, Aaron L. Iverson, Lynn S. Adler, Matthias Albrecht, Audrey Alignier, Gina M. Angelella, Muhammad Zubair Anjum … & Yi Zou
The idea that noncrop habitat enhances pest control and represents a win–win opportunity to conserve biodiversity and bolster yields has emerged as an agroecological paradigm. However, while noncrop habitat in landscapes surrounding farms sometimes benefits pest predators, natural enemy responses remain heterogeneous across studies and effects on pests are inconclusive. The observed heterogeneity in species responses to noncrop habitat may be biological in origin or could result from variation in how habitat and biocontrol are...

Data from: The relative contribution of natural landscapes and human-mediated factors on the connectivity of a noxious invasive weed

Diego F. Alvarado-Serrano, Megan L. Van Etten, Shu-Mei Chang & Regina S. Baucom
Examining how the landscape may influence gene flow is at the forefront of understanding population differentiation and adaptation. Such understanding is crucial in light of ongoing environmental changes and the elevated risk of ecosystems alteration. In particular, knowledge of how humans may influence population structure is imperative to allow for informed decisions in management and conservation as well as to gain a better understanding of anthropogenic impacts on the interplay between gene flow, genetic drift...

Data from: Inferring diversification rate variation from phylogenies with fossils

Jonathan S. Mitchell, Rampal S. Etienne & Daniel L. Rabosky
Time-calibrated phylogenies of living species have been widely used to study the tempo and mode of species diversification. However, it is increasingly clear that inferences about species diversification — extinction rates in particular — can be unreliable in the absence of paleontological data. We introduce a general framework based on the fossilized birth-death process for studying speciation-extinction dynamics on phylogenies of extant and extinct species. Our model assumes that phylogenies can be modeled as a...

Data from: Rautangaroa, a new genus of feather star (Echinodermata: Crinoidea) from the Oligocene of New Zealand

Tomasz K. Baumiller & R. Ewan Fordyce
We describe a nearly complete, and thus extremely rare, featherstar (Crinoidea, Comatulida) from Oligocene strata of North Otago/South Canterbury, New Zealand. A detailed analysis of this specimen, as well as newly recovered material and previously described fragmentary remains from nearby contemporaneous sedimentary units, in addition to relevant historical specimens, lead us to conclude that it cannot be placed in any currently established genus. A new genus, Rautangaroa, is proposed to accommodate it. This intact specimen...

Data from: Metabolites of n-Butylparaben and iso-Butylparaben exhibit estrogenic properties in MCF-7 and T47D human breast cancer cell lines

Thomas L. Gonzalez, Rebecca K. Moos, Christina L. Gercsh, Michael D. Johnson, Rudy J. Richardson, Holger M. Koch, James M. Rae & Christina L Gersch
Two oxidized metabolites of n-butylparaben (BuP) and iso-butylparaben (IsoBuP) discovered in human urine samples exhibit structural similarity to endogenous estrogens. We hypothesized that these metabolites bind to the human estrogen receptor (ER) and promote estrogen signaling. We tested this using models of ER-mediated cellular proliferation. The estrogenic properties of 3-hydroxy n-butyl 4-hydroxybenzoate (3OH) and 2-hydroxy iso-butyl 4-hydroxybenzoate (2OH) were determined using the ER-positive, estrogen-dependent human breast cancer cell lines MCF-7, and T47D. The 3OH metabolite...

Data from: Priority effects within coinfected hosts can drive unexpected population-scale patterns of parasite prevalence

Patrick A. Clay, Michael H. Cortez, Meghan A. Duffy & Volker H. W. Rudolf
Organisms are frequently coinfected by multiple parasite strains and species, and interactions between parasites within hosts are known to influence parasite prevalence and diversity, as well as epidemic timing. Importantly, interactions between coinfecting parasites can be affected by the order in which they infect hosts (i.e. within-host priority effects). In this study, we use a single-host, two-pathogen, SI model with environmental transmission to explore how within-host priority effects scale up to alter host population-scale infection...

Data from: When feeling younger depends on others: the effects of social cues on older consumers

Cesare Amatulli, Alessandro M. Peluso, Gianluigi Guido & Carolyn Yoon
How do social cues in the immediate environment affect older consumers’ tendency to feel younger? And what is the impact of this tendency on consumption? This research investigates the malleability of older consumers’ feel-age and the underlying mechanisms by focusing on the influence of contextual social cues and the downstream effects on consumption behavior. Five experiments provide evidence that the mere presence of young social cues triggers an identity threat for older consumers; and feeling...

Data from: Toxins or medicines? Phytoplankton diets mediate host and parasite fitness in a freshwater system

Kristel F. Sanchez, Naomi Huntley, Meghan A. Duffy & Mark D. Hunter
Diets must satisfy the everyday metabolic requirements of organisms and can also serve as medicines to combat disease. Currently, the medicinal role of diets is much better understood in terrestrial than in aquatic ecosystems. This is surprising because phytoplankton species synthesize secondary metabolites with known antimicrobial properties. Here, we investigated the medicinal properties of phytoplankton (including toxin-producing cyanobacteria) against parasites of the dominant freshwater herbivore, Daphnia. We fed Daphnia dentifera on green algae and toxic...

Data from: Globally invasive genotypes of the amphibian chytrid outcompete an enzootic lineage in coinfections

Thomas S. Jenkinson, David Rodriguez, Rebecca A. Clemons, Lucas A. Michelotti, Kelly R. Zamudio, Luís Felipe Toledo, Joyce E. Longcore & Timothy Y. James
Competition between genotypes is likely to be a key driver of pathogen evolution, particularly following a geographic invasion by distant strains. Theory predicts that competition between disease strains will result in the most virulent strain persisting. Despite its evolutionary implications, the role of strain competition in shaping populations remains untested for most pathogens. We experimentally investigated the in vivo competitive differences between two divergent lineages of the amphibian-killing chytrid fungus (Batrachochytrium dendrobatidis, Bd). These Bd...

Data from: Linking host traits, interactions with competitors, and disease: mechanistic foundations for disease dilution

Alexander T. Strauss, Anna M. Bowling, Meghan A. Duffy, Carla E. Cáceres & Spencer R. Hall
1.The size of disease epidemics remains difficult to predict, especially when parasites interact with multiple species. Traits of focal hosts like susceptibility could directly predict epidemic size, while other traits including competitive ability might shape it indirectly in communities with a ‘dilution effect’. 2.In a dilution effect, diluter taxa can reduce disease by regulating (lowering) the density of focal hosts (i.e., through competition), or by reducing encounters between focal hosts and parasites. However, these dilution...

Registration Year

  • 2018

Resource Types

  • Dataset


  • University of Michigan-Ann Arbor
  • Yale University
  • University of Arizona
  • University of Pennsylvania
  • Stanford University
  • National Autonomous University of Mexico
  • University of Sao Paulo
  • Emory University
  • Rice University
  • University of Washington