36 Works

Data from: Social associations between California sea lions influence the use of a novel foraging ground

Zachary A. Schakner, Daniel T. Blumstein & Matthew B. Petelle
Social relationships define an individual's position in its social network, which can influence the acquisition and spread of information and behavioural variants through the population. Thus, when nuisance behaviours spread through wildlife populations, identifying central individuals may provide valuable insights for problem-species management. We studied the effects of network position on California sea lion (Zalophus californianus) discovery and foraging success at a novel foraging ground—the salmonids that aggregate at the Bonneville Dam tail-race, 235 km...

Data from: Detecting signals of chronic shedding to explain pathogen persistence: Leptospira interrogans in California sea lions

Michael G. Buhnerkempe, Katherine C. Prager, Christopher C. Strelioff, Denise J. Greig, Jeff L. Laake, Sharon R. Melin, Robert L. DeLong, Frances M. D. Gulland & James O. Lloyd-Smith
Identifying mechanisms driving pathogen persistence is a vital component of wildlife disease ecology and control. Asymptomatic, chronically infected individuals are an oft-cited potential reservoir of infection but demonstrations of the importance of chronic shedding to pathogen persistence at the population level remain scarce. Studying chronic shedding using commonly collected disease data is hampered by numerous challenges, including short-term surveillance that focuses on single epidemics and acutely ill individuals, the subtle dynamical influence of chronic shedding...

Data from: Genetic assignment with isotopes and habitat suitability (GAIAH), a migratory bird case study

Kristen C. Ruegg, Eric C. Anderson, Ryan J. Harrigan, Kristina L. Paxton, Jeffrey F. Kelly, Frank Moore & Thomas B. Smith
1. Identifying migratory connections across the annual cycle is important for studies of migrant ecology, evolution, and conservation. While recent studies have demonstrated the utility of high-resolution SNP-based genetic markers for identifying population-specific migratory patterns, the accuracy of this approach relative to other intrinsic tagging techniques has not yet been assessed. 2. Here, using a straightforward application of Bayes' Rule, we develop a method for combining inferences from high-resolution genetic markers, stable isotopes, and habitat...

Data from: Cambrian origin of the CYP27C1-mediated vitamin A1-to-A2 switch, a key mechanism of vertebrate sensory plasticity

Ala Morshedian, Matthew B. Toomey, Gabriel E. Pollock, Rikard Frederiksen, Jennifer M. Enright, Stephen D. McCormick, M. Carter Cornwall, Gordon L. Fain & Joseph C. Corbo
The spectral composition of ambient light varies across both space and time. Many species of jawed vertebrates adapt to this variation by tuning the sensitivity of their photoreceptors via the expression of CYP27C1, an enzyme that converts vitamin A1 into vitamin A2, thereby shifting the ratio of vitamin A1-based rhodopsin to red-shifted vitamin A2-based porphyropsin in the eye. Here, we show that the sea lamprey (Petromyzon marinus), a jawless vertebrate that diverged from jawed vertebrates...

Data from: Early-branching euteleost relationships: areas of congruence between concatenation and coalescent model inferences

Matthew A. Campbell, Michael E. Alfaro, Max Belasco & J. Andrés López
Phylogenetic inference based on evidence from DNA sequences has led to significant strides in the development of a stable and robustly supported framework for the vertebrate tree of life. To date, the bulk of those advances have relied on sequence data from a small number of genome regions that have proven unable to produce satisfactory answers to consistently recalcitrant phylogenetic questions. Here, we re-examine phylogenetic relationships among early-branching euteleostean fish lineages classically grouped in the...

Data from: A mix-and-click method to measure amyloid-β concentration with sub-micromolar sensitivity

Christine Xue, Yoon Lee, Joyce Tran, Dennis Chang, Zhefeng Guo & Yoon Kyung Lee
Aggregation of amyloid-β (Aβ) protein plays a central role in Alzheimer's disease. Because protein aggregation is a concentration-dependent process, rigorous investigations require accurate concentration measurements. Owing to the high aggregation propensity of Aβ protein, working solutions of Aβ are typically in the low micromolar range. Therefore, an ideal Aβ quantification method requires high sensitivity without sacrificing speed and accuracy. Absorbance at 280 nm is frequently used to measure Aβ concentration, but the sensitivity is low...

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: Checkerboard score-area relationships reveal spatial scales of plant community structure

Gordon G. McNickle, Eric G. Lamb, Mike Lavender, , Brandon S. Schamp, Steven D. Siciliano, Richard Condit, Stephen P. Hubbell, Jennifer L. Baltzer & James F Cahill
Identifying the spatial scale at which particular mechanisms influence plant community assembly is crucial to understanding the mechanisms structuring communities. It has long been recognized that many elements of community structure are sensitive to area; however the majority of studies examining patterns of community structure use a single relatively small sampling area. As different assembly mechanisms likely cause patterns at different scales we investigate how plant species co-occurrence patterns change with sampling unit scale. We...

NEXUS Head CT

Robert Rodriguez & William Mower
BackgroundClinicians, afraid of missing intracranial injuries, liberally obtain computed tomographic (CT) head imaging in blunt trauma patients. Prior work suggests that clinical criteria (NEXUS Head CT decision instrument) can reliably identify patients with important injuries, while excluding injury, and the need for imaging in many patients.MethodsWe conducted a prospective observational study of the NEXUS Head CT decision instrument (DI) that requires patients to meet eight criteria to achieve “low-risk” classification. We examined the instrument’s performance...

Data from: Tree mortality across biomes is promoted by drought intensity, lower wood density and higher specific leaf area

Sarah Greenwood, Paloma Ruiz-Benito, Jordi Martínez-Vilalta, Francisco Lloret, Thomas Kitzberger, Craig D. Allen, Rod Fensham, Daniel C. Laughlin, Jens Kattge, Gerhard Bonisch, Nathan J. B. Kraft & Alistair S. Jump
Drought events are increasing globally, and reports of consequent forest mortality are widespread. However, due to a lack of a quantitative global synthesis, it is still not clear whether drought-induced mortality rates differ among global biomes and whether functional traits influence the risk of drought-induced mortality. To address these uncertainties, we performed a global meta-analysis of 58 studies of drought-induced forest mortality. Mortality rates were modelled as a function of drought, temperature, biomes, phylogenetic and...

Data from: Population genetic and field ecological analyses return similar estimates of dispersal over space and time in an endangered amphibian

Ian J. Wang & H. Bradley Shaffer
The explosive growth of empirical population genetics has seen a proliferation of analytical methods leading to a steady increase in our ability to accurately measure key population parameters, including genetic isolation, effective population size, and gene flow in natural systems. Assuming they yield similar results, population genetic methods offer an attractive complement to, or replacement of, traditional field ecological studies. However, empirical assessments of the concordance between direct field ecological and indirect population genetic studies...

Registration Year

  • 2017
    36

Resource Types

  • Dataset
    36

Affiliations

  • University of California Los Angeles
    36
  • University of California System
    3
  • Southwest Fisheries Science Center
    2
  • University of Kansas
    1
  • Rice University
    1
  • University of Liège
    1
  • Wilfrid Laurier University
    1
  • University of Michigan-Ann Arbor
    1
  • Northwestern University
    1
  • Field Museum of Natural History
    1