39 Works

Coping with impostor feelings: evidence-based recommendations from a mixed methods study

Jill Barr-Walker, Debra A. Werner, Liz Kellermeyer & Michelle B. Bass
The negative effects of impostor phenomenon, also called impostor syndrome, include burnout and decreased job satisfaction and have led to an increased interest in addressing this issue in libraries in recent years. While previous research has shown that many librarians experience impostor phenomenon, the experience of coping with these feelings has not been widely studied. Our study’s aim was to understand how health sciences librarians cope with impostor phenomenon in the workplace, using a quantitative...

The Church, intensive kinship, and global psychological variation

Jonathan Schulz, Duman Bahrami Rad, Jonathan Beauchamp & Joseph Henrich
Recent research not only confirms the existence of substantial psychological variation around the globe but also highlights the peculiarity of many Western populations. We propose that part of this 15 variation can be traced back to the action and diffusion of the Western Church, the branch of Christianity that evolved into the Roman Catholic Church. Specifically, we propose that the Church’s transformation of European kinship, by promoting small, nuclear households, weak family ties and residential...

Stepwise shifts underlie evolutionary trends in morphological complexity of the mammalian vertebral column

Katrina Jones
A fundamental concept in evolutionary biology is that life tends to become more complex through geologic time, but empirical examples of this phenomenon are controversial. One debate is whether increasing complexity is the result of random variations, or if there are evolutionary processes which actively drive its acquisition, and if these processes act uniformly across clades. The mammalian vertebral column provides an opportunity to test these hypotheses because it is composed of serially-repeating vertebrae for...

Data from: Strength of species interactions determines biodiversity and stability in microbial communities

Christoph Ratzke, Julien Barrere & Jeff Gore
Organisms, especially microbes, tend to live in complex communities. While some of these ecosystems are very bio-diverse, others aren′t, and while some are very stable over time others undergo strong temporal fluctuations. Despite a long history of research and a plethora of data it is not fully understood what sets biodiversity and stability of ecosystems. Theory as well as experiments suggest a connection between species interaction, biodiversity, and stability of ecosystems, where an increase of...

Data from: Biological traits, phylogeny and human footprint signatures on the geographic range size of passerines (Order Passeriformes) worldwide

Miguel Ángel Olalla-Tárraga, Talita Amado, Luis Mauricio Bini, Pablo Martínez, Ignacio Morales-Castilla, Erik Joaquin Torres-Romero & Fabricio Villalobos
Aim Multiple hypotheses exist to explain the astonishing geographic range size variation across species, but these have rarely been tested under a unifying framework that simultaneously considers direct and indirect effects of ecological niche processes and evolutionary dynamics. Here, we jointly evaluate ecological and evolutionary hypotheses that may account for global interspecific patterns of range size in the most species-rich avian order: Passeriformes (perching birds). Location Global Time period CurrentMajor taxa studied Order Passeriformes Methods...

Transitions in paternal social status predict patterns of offspring growth and metabolic transcription

Joseph W. Cauceglia, Adam C. Nelson, Nimrod D. Rubinstein, Shweta Kukreja, Lynsey N. Sasso, John A. Beaufort, Oliver J. Rando & Wayne K. Potts
Parental effects occur when changes in the parental phenotype or environment cause changes to offspring phenotype. While some parental effects are triggered in response to an environmental cue in a time-locked fashion, other parental effects persist even after the cue has been removed, suggesting multiple timescales of action. For parental effects to serve as reliable signals of current environmental conditions, they should be reversible, such that when the cue changes, offspring phenotypes change in accordance....

Data from: Heterochronic shifts and conserved embryonic shape underlie crocodylian craniofacial disparity and convergence

Zachary S. Morris, Kent A. Vliet, Arkhat Abzhanov & Stephanie E. Pierce
The distinctive anatomy of the crocodylian skull is intimately linked with dietary ecology, resulting in repeated convergence on blunt- and slender-snouted ecomorphs. These evolutionary shifts depend upon modifications of the developmental processes which direct growth and morphogenesis. Here we examine the evolution of cranial ontogenetic trajectories to shed light on the mechanisms underlying convergent snout evolution. We use geometric morphometrics to quantify skeletogenesis in an evolutionary context and reconstruct ancestral patterns of ontogenetic allometry to...

Data from: Population genomics and demographic sampling of the ant-plant Vachellia drepanolobium and its symbiotic ants from sites across its range in East Africa.

John H. Boyle, Dino Martins, Paul M. Musili & Naomi E. Pierce
The association between the African ant plant, Vachellia drepanolobium, and the ants that inhabit it has provided insight into the boundaries between mutualism and parasitism, the response of symbioses to environmental perturbations, and the ecology of species coexistence. We use a landscape genomics approach at sites sampled throughout the range of this system in Kenya to investigate the demographics and genetic structure of the different partners in the association. We find that different species of...

Data from: Molecular physiology of chemical defenses in a poison frog

Stephanie N Caty, Aurora Alvarez-Buylla, Gary` D Byrd, Charles Vidoudez, Alexandre B Roland, Elicio E Tapia, Bogdan Bodnik, Sunia A Trauger, Luis A Coloma & Lauren A O'Connell
Poison frogs sequester small molecule lipophilic alkaloids from their diet of leaf litter arthropods for use as chemical defenses against predation. Although the dietary acquisition of chemical defenses in poison frogs is well-documented, the physiological mechanisms of alkaloid sequestration has not been investigated. Here, we used RNA sequencing and proteomics to determine how alkaloids impact mRNA or protein abundance in the Little Devil Frog (Oophaga sylvatica) and compared wild caught chemically defended frogs to laboratory...

Quantifying the effects of species traits on predation risk in nature: a comparative study of butterfly wing damage

Freerk Molleman, Juhan Javoiš, Robert Davis, Melissa Whitaker, Toomas Tammaru, Andreas Prinzing, Erki Õunap, Niklas Wahlberg, Ullasa Kodandaramaiah, Kwaku Aduse-Poku, Ants Kaasik & James Carey
1) Evading predators is a fundamental aspect of the ecology and evolution of all prey animals. In studying the influence of prey traits on predation risk, previous researchers have shown that crypsis reduces attack rates on resting prey, predation risk increases with increased prey activity, and rapid locomotion reduces attack rates and increases chances of surviving predator attacks. However, evidence for these conclusions is nearly always based on observations of selected species under artificial conditions....

Data from: Insect herbivory reshapes a native leaf microbiome

Parris Humphrey & Noah Whiteman
Publication abstract: Insect herbivory is pervasive in plant communities, but its impact on microbial plant colonizers is not well-studied in natural systems. By calibrating sequencing-based bacterial detection to absolute bacterial load, we find that the within-host abundance of most leaf microbiome (phyllosphere) taxa colonizing a native forb is amplified within leaves impacted by insect herbivory. Herbivore-associated bacterial amplification reflects community-wide compositional shifts towards lower ecological diversity, but the extent and direction of such compositional shifts...

Data from: Sibling rivalry: males with more brothers develop larger testes

Kristin Hook, Heidi Fisher, W. David Weber & Hopi Hoekstra
When females mate with multiple partners in a reproductive cycle, the relative number of competing sperm from rival males is often the most critical factor in determining paternity. Gamete production is directly related to testis size in most species, and is associated with both mating behavior and perceived risk of competition. Deer mice, Peromyscus maniculatus, are naturally promiscuous and males invest significantly more in sperm production than males of P. polionotus, their monogamous sister‐species. Here,...

Data from: Structurally assisted super black in colorful peacock spiders

Dakota E. McCoy, Victoria E. McCoy, Nikolaj K. Mandsberg, Anna V. Shneidman, Joanna Aizenberg, Richard O. Prum & David Haig
Male peacock spiders (Maratus, Salticidae) compete to attract female mates using elaborate, sexually-selected displays. They evolved both brilliant color and velvety black. Here we use scanning electron microscopy (SEM), hyperspectral imaging, and finite-difference time-domain (FDTD) optical modeling to investigate the deep black surfaces of peacock spiders. We found that super black regions reflect <0.5% of light (for a 30° collection angle) in Maratus speciosus (0.44%) and Maratus karrie (0.35%) due to microscale structures. Both species...

Mechanisms of convergent egg provisioning in poison frogs

Eva K. Fischer, Alexandre B. Roland, Nora A. Moskowitz, Charles Vidoudez, Ndimbintsoa Ranaivorazo, Elicio E. Tapia, Sunia A. Trauger, Miguel Vences, Luis A. Coloma & Lauren A. O'Connell
Parental provisioning of offspring with physiological products (nursing) occurs in many animals, yet little is known about the neuroendocrine basis of nursing in non-mammalian species. Within amphibians, maternal provisioning has evolved multiple times, with mothers of some species feeding unfertilized eggs to their developing offspring until tadpoles complete metamorphosis. We conducted field studies in Ecuador and Madagascar to ask whether convergence at the behavioral level provides similar benefits to offspring and relies on shared neural...

Data from: Convergent regulatory evolution and loss of flight in palaeognathous birds

Timothy B. Sackton, Phil Grayson, Alison Cloutier, Zhirui Hu, Jun S. Liu, Nicole E. Wheeler, Paul P. Gardner, Julia A. Clarke, Allan J. Baker, Michele Clamp & Scott V. Edwards
A core question in evolutionary biology is whether convergent phenotypic evolution is driven by convergent molecular changes in proteins or regulatory regions. We combined phylogenomic, developmental, and epigenomic analysis of 11 new genomes of paleognathous birds, including an extinct moa, to show that convergent evolution of regulatory regions, more so than protein-coding genes, is prevalent among developmental pathways associated with independent losses of flight. A Bayesian analysis of 284,001 conserved noncoding elements, 60,665 of which...

The genetics of morphological and behavioural island traits in deer mice

Felix Baier & Hopi Hoekstra
Animals on islands often exhibit dramatic differences in morphology and behaviour compared to mainland individuals, a phenomenon known as the "island syndrome". These differences are thought to be adaptations to island environments, but the extent to which they have a genetic basis or instead represent plastic responses to environmental extremes is often unknown. Here, we revisit a classic case of island syndrome in deer mice (Peromyscus maniculatus) from British Columbia. We first show that Saturna...

Learning from dynamic traits: Seasonal shifts yield insights into ecophysiological tradeoffs across scales from macroevolutionary to intra-individual

Chase Mason, Michael C. LaScaleia, Danielle R. De La Pascua, J. Grey Monroe & Eric W. Goolsby
Premise of the Research. Phylogenetic comparative methods provide a powerful approach for exploring the macroevolution of plant functional traits. Such approaches can uncover trait-trait correlations through evolutionary time, as well as provide evidence of the role of traits in adaptation across environmental gradients. For continuous traits, most phylogenetic comparative approaches to date employ a single trait value per species, often a mean of sampled individuals, or alternatively incorporate intraspecific variation as a distribution around such...

Data from: Functional performance of turtle humerus shape across an ecological adaptive landscape

Blake V Dickson & Stephanie E Pierce
The concept of the adaptive landscape has been invaluable to evolutionary biologists for visualizing the dynamics of selection and adaptation; and is increasingly being used to study morpho-functional data. Here we construct adaptive landscapes to explore functional trade-offs of humerus morphology in turtles adapted to three different locomotor environments: marine, semiaquatic, and terrestrial. Humerus shape from 40 species of cryptodire turtles was quantified using a pseudolandmark approach. Hypothetical shapes were extracted in a grid across...

Data from: phenotools: an R package for visualizing and analyzing phenomic datasets

Chad M. Eliason, Scott V. Edwards & Julia A. Clarke
1.Phenotypic data is crucial for understanding genotype–phenotype relationships, assessing the tree of life, and revealing trends in trait diversity over time. Large‐scale description of whole organisms for quantitative analyses (phenomics) presents several challenges, and technological advances in the collection of genomic data outpace those for phenomic data. Reasons for this disparity include the time‐consuming and expensive nature of collecting discrete phenotypic data and mining previously‐published data on a given species (both often requiring anatomical expertise...

Data from: Earth history and the passerine superradiation

Carl H. Oliveros, Daniel J. Field, Daniel T. Ksepka, F. Keith Barker, Alexandre Aleixo, Michael J. Andersen, Per Alström, Brett W. Benz, Edward L. Braun, Michael J. Braun, Gustavo A. Bravo, Robb T. Brumfield, R. Terry Chesser, Santiago Claramunt, Joel Cracraft, Andrés M. Cuervo, Elizabeth P. Derryberry, Travis C. Glenn, Michael G. Harvey, Peter A. Hosner, Leo Joseph, Rebecca T. Kimball, Andrew L. Mack, Colin M. Miskelly, A. Townsend Peterson … & Brant C. Faircloth
Avian diversification has been influenced by global climate change, plate tectonic movements, and mass extinction events. However, the impact of these factors on the diversification of the hyperdiverse perching birds (passerines) is unclear because family level relationships are unresolved and the timing of splitting events among lineages is uncertain. We analyzed DNA data from 4,060 nuclear loci and 137 passerine families using concatenation and coalescent approaches to infer a comprehensive phylogenetic hypothesis that clarifies relationships...

London Stage Database

Mattie Burkert, Will Daland, Emma Hallock, Todd Hugie, Lauren Liebe, Derek Miller, Dustin Olsen & Ben R. Schneider Jr.
Recovered files, and documents and archival data used to revitalize the London Stage Information Bank, which was completed in the 1970s but had become technologically obsolete.

Dataset for the Environmental Risk Assessment of Chlorpyrifos to Chinook Salmon in four Rivers of Washington State, United States

Wayne G. Landis, Valerie R. Chu, Scarlett E. Graham, Meagan J. Harris, April J. Markiewicz, Chelsea J. Mitchell, Katherine E. von Stackelberg & John D. Stark

Data from: How do climate change experiments alter plot-scale climate?

Ailene Ettinger & Elizabeth M. Wolkovich
To understand and forecast biological responses to climate change, scientists frequently use field experiments that alter temperature and precipitation. Climate manipulations can manifest in complex ways, however, challenging interpretations of biological responses. We reviewed publications to compile a database of daily plot‐scale climate data from 15 active‐warming experiments. We find that the common practices of analysing treatments as mean or categorical changes (e.g. warmed vs. unwarmed) masks important variation in treatment effects over space and...

Data from: Bacterial communities within Phengaris (Maculinea) alcon caterpillars are shifted following transition from solitary living to social parasitism of Myrmica ant colonies

Mark A. Szenteczki, Camille Pitteloud, Luca Pietro Casacci, Lucie Kešnerová, Melissa R. L. Whitaker, Philipp Engel, Roger Vila & Nadir Alvarez
Bacterial symbionts are known to facilitate a wide range of physiological processes and ecological interactions for their hosts. In spite of this, caterpillars with highly diverse life histories appear to lack resident microbiota. Gut physiology, endogenous digestive enzymes, and limited social interactions may contribute to this pattern, but the consequences of shifts in social activity and diet on caterpillar microbiota are largely unknown. Phengaris alcon caterpillars undergo particularly dramatic social and dietary shifts when they...

Data from: Genetic diversity, demographic history and neo-sex chromosomes in the Critically Endangered Raso lark

Elisa G. Dierickx, Simon Yung Wa Sin, Pieter Van Veelen, M. De L. Brooke, Yang Liu, Scott V. Edwards & Simon H. Martin
Small effective population sizes could expose island species to inbreeding and loss of genetic variation. Here, we investigate factors shaping genetic diversity in the Raso lark, which has been restricted to a single islet for approximately 500 years, with a population size of a few hundred. We assembled a reference genome for the related Eurasian skylark and then assessed diversity and demographic history using RAD-seq data (75 samples from Raso larks and two related mainland...

Registration Year

  • 2019
    39

Resource Types

  • Dataset
    39

Affiliations

  • Harvard University
    39
  • University of Minnesota
    3
  • Stanford University
    2
  • Utah State University
    2
  • The University of Texas at Austin
    2
  • Columbia University
    2
  • Royal Ontario Museum
    2
  • University of Cambridge
    2
  • Centro Jambatu de Investigación y Conservación de Anfibios
    2
  • University of Chicago
    2