87 Works

Genital morphology and the mechanics of copulation in the millipede genus Pseudopolydesmus (Diplopoda: Polydesmida: Polydesmidae)

Xavier Zahnle, Petra Sierwald, Stephanie Ware & Jason Bond
Mate choice, copulation, genital morphology, and sperm storage are not very well understood in millipedes. The use of three-dimensional x-ray computed tomography (µCT) provides new morphological data regarding millipede reproductive systems in both the female and male, including chitinous sclerites and membranes, muscles, glands, oviducts, and sperm conduits. Here we present a complete integrated account of the morphology and function of the female genital organs in the family Polydesmidae (Diplopoda: Polydesmida) using µCT, UV fluorescence...

Domestic Well Vulnerability to Drought Duration and Unsustainable Groundwater Management in California's Central Valley

Richard Pauloo, Helen Dahlke, Graham Fogg, Herve Guillon, Amanda Fencl & Alvar Escriva-Bou
Millions of Californians access drinking water via domestic wells, which are vulnerable to drought and unsustainable groundwater management. Groundwater overdraft and the possibility of longer drought duration under climate change threatens domestic well reliability, yet we lack tools to assess the impact of such events. Here, we leverage 943,469 well completion reports and 20 years of groundwater elevation data to develop a spatially-explicit domestic well failure model covering California's Central Valley. Our model successfully reproduces...

Persistence of an endangered native duck, feral mallards, and multiple hybrid swarms across the main Hawaiian Islands

Caitlin Wells, Philip Lavretsky, Michael Sorenson, Jeffrey Peters, Jeffrey DaCosta, Stephen Turnbull, Kimberly Uyehara, Christopher Malachowski, Bruce Dugger, John Eadie & Andrew Engilis
Interspecific hybridization is recognized as an important process in the evolutionary dynamics of both speciation and the reversal of speciation. However, our understanding of the spatial and temporal patterns of hybridization that erode versus promote species boundaries is incomplete. The endangered, endemic koloa maoli (or Hawaiian duck, Anas wyvilliana) is thought to be threatened with genetic extinction through ongoing hybridization with an introduced congener, the feral mallard (A. platyrhynchos). We investigated spatial and temporal variation...

Is the USDA core collection of common bean representative of genetic diversity of the species, as assessed by SNP diversity?

Paul Gepts, Saarah Kuzay & Paige Hamilton
Core collections are envisioned to be a representative subset of larger germplasm collections. They were introduced to facilitate the characterization and use of these germplasm collections. The common bean (Phaseolus vulgaris) core collection of the USDA Western Regional Plant Introduction Station was one of the first ones to be established in the early 1990s. Here, we evaluate the representativity of this common bean collection in light of the availability of a SNP platform and new...

Data from: Human traffic and habitat complexity are strong predictors for the distribution of a declining amphibian

Rachel B. Anderson
Invasive species and habitat modification threaten California's native pond-breeding amphibians, including the federally threatened California Red-legged Frog (Rana draytonii). The relative contributions of invasive species, including the American Bullfrog (Lithobates catesbeianus), and of habitat changes to these declines are disputed. I conducted a field study over several years in central California to examine the presence/absence of these two species at 79 breeding ponds to determine the predictive role for occupancy of factors including vegetation, pond...

Data from: Geography of speciation affects rate of trait divergence in haemulid fishes

Jose Tavera & Peter Wainwright
Speciation and the interactions between recently diverged species are thought to be major causes of ecological and morphological divergence in evolutionary radiations. We explored the role of these factors in the diversification of New World haemulid fishes, a major radiation of shore fishes in the tropical West Atlantic and East Pacific that are key members of coral reef ecosystems in this region. A time calibrated molecular phylogeny of this group reveals 21 sister species pairs,...

Supporting data for the manuscript: Observations and modeling of the surface seiches of Lake Tahoe, USA

Derek Roberts, S. Geoffrey Schladow & Alexander Forrest
This data set was created to make the data associated with the manuscript Observations and modeling of the surface seiches of Lake Tahoe, USA, accepted for publication in Aquatic Sciences, publically available per journal convention. The publication abstract is shown below: A rich array of spatially complex surface seiche modes exists in lakes. While the amplitude of these oscillations is often small, knowledge of their spatio-temporal characteristics is valuable for understanding when they might be...

Effect of Drought Stress on the Genetic Architecture of Photosynthate Allocation and Remobilization in Pods of Common Bean (Phaseolus vulgaris L.), a Key Species for Food Security

Paul Gepts, Jorge Carlos Berny Mier Y Teran, Enéas R. Konzen, Antonia Palkovic, Siu M. Tsai, Idupulapati M. Rao & Stephen Beebe
Background: Common bean is the most important staple grain legume for direct human consumption and nutrition. It complements major sources of carbohydrates, including cereals, root crop, or plantain, as a source of dietary proteins. It is also a significant source of vitamins and minerals like iron and zinc. To fully play its nutritional role, however, its robustness against stresses needs to be strengthened. Foremost among these is drought, which commonly affects its productivity and seed...

Data from: Chiral Majorana fermion modes in a quantum anomalous Hall insulator–superconductor structure

Qing Lin He, Lei Pan, Alexander L. Stern, Edward C. Burks, Xiaoyu Che, , Jing Wang, Biao Lian, Quan Zhou, Eun Sang Choi, Koichi Murata, Xufeng Kou, Zhijie Chen, Tianxiao Nie, Qiming Shao, Yabin Fan, Shou-Cheng Zhang, Kai Liu, Jing Xia & Kang L. Wang
Majorana fermion is a hypothetical particle that is its own antiparticle. We report transport measurements that suggest the existence of one-dimensional chiral Majorana fermion modes in the hybrid system of a quantum anomalous Hall insulator thin film coupled with a superconductor. As the external magnetic field is swept, half-integer quantized conductance plateaus are observed at the locations of magnetization reversals, giving a distinct signature of the Majorana fermion modes. This transport signature is reproducible over...

FoRCy: Rocking Shallow Foundation Performance in Slow Cyclic and Monotonic Experiments

Manouchehr Hakhamaneshi, Bruce L. Kutter, Andreas Gerasimos Gavras, Sivapalan Gajan, Angelos Tsatsis, George Gazetas, Ioannis Anastasopoulos, Tetsuya Kohno, Giovanna Pianese, Keshab Sharma, Lijun Deng, Weian Liu, Roberto Paolucci & Jonathan Monical
Numerous centrifuge experiments (e.g., Rosebrook 2001; Ugalde et al. 2007; Gajan and Kutter 2008; Deng et al. 2012; Hakhamaneshi et al. 2012; Liu et al. 2013; Allmond and Kutter 2014; Loli et al. 2014) and 1g shake-table experiments (e.g., Shirato et al. 2008; Drosos et al. 2012; Antonellis et al. 2015; Tsatsis and Anastasopoulos 2015) have demonstrated that rocking shallow foundations can be designed to provide re-centering and energy dissipation with little damage to the...

Explaining illness with evil: Pathogen prevalence fosters moral vitalism

Brock Bastian, Christin-Melanie Vauclair, Steve Loughnan, Paul Bain, Ashwini Ashokkumar, Maja Becker, Michal Bilewicz, Emma Collier-Baker, Carla Crespo, Paul W. Eastwick, Ronald Fischer, Malte Friese, Ángel Gómez, Valeschka M. Guerra, Jose Luis Castellanos Guevara, Katja Hanke, Nic Hooper, Li-Li Huang, Shi Junqi, Minoru Karasawa, Peter Kuppens, Siri Leknes, Müjde Peker, Cesar Pelay, Afoditi Pina … & William B. Swann
Pathogens represent a significant threat to human health leading to the emergence of strategies designed to help manage their negative impact. We examined how spiritual beliefs developed to explain and predict the devastating effects of pathogens and spread of infectious disease. Analysis of existing data in Studies 1 and 2 suggests that moral vitalism (beliefs about spiritual forces of evil) is higher in geographical regions characterized by historical higher levels of pathogens. Furthermore, drawing on...

Data from: Feline immunodeficiency virus in puma: estimation of force of infection reveals insights into transmission

Jennifer Reynolds, Scott Carver, Mark Cunningham, Ken Logan, Winston Vickers, Kevin Crooks, Sue VandeWoude & Meggan Craft
Determining parameters that govern pathogen transmission (such as the force of infection, FOI), and pathogen impacts on morbidity and mortality, is exceptionally challenging for wildlife. Vital parameters can vary, for example across host populations, between sexes and within an individual's lifetime. Feline immunodeficiency virus (FIV) is a lentivirus affecting domestic and wild cat species, forming species-specific viral--host associations. FIV infection is common in populations of puma (Puma concolor), yet uncertainty remains over transmission parameters and...

Registration Year

  • 2019

Resource Types

  • Dataset


  • University of California, Davis
  • University of Montana
  • University of Nevada Reno
  • University of Washington
  • Stanford University
  • Lund University
  • Fudan University
  • University of Vermont
  • University of California, Berkeley
  • United States Department of Agriculture