23 Works

Data from: Feather chemicals contain information about the major histocompatibility complex in a highly scented seabird

Sarah Jennings, Brian Hoover, Simon Yung Wa Sin & Susan Ebeler
Mate choice informed by the immune genes of the Major Histocompatibility Complex (MHC) may provide fitness benefits including offspring with increased immunocompetence. Olfactory cues are considered the primary mechanism organisms use to evaluate the MHC of potential mates, yet this idea has received limited attention in birds. Motivated by a finding of MHC-dependent mate choice in the Leach’s storm-petrel (Oceanodroma leucorhoa), we examined whether the chemical profiles of this highly scented seabird contain information about...

Raw data from: Dysregulation of host-control causes interspecific conflict over host investment into symbiotic organs

Kenjiro Quides, Fathi Salaheldine, Ruchi Jariwala & Joel Sachs
Microbial mutualists provide substantial benefits to hosts that feed back to enhance fitness of the associated microbes. In many systems, beneficial microbes colonize symbiotic organs, specialized host structures that house symbionts and mediate resources exchanged between parties. Mutualisms are characterized by net benefits exchanged among members of different species, however inequalities in the magnitude of these exchanges could result in evolutionary conflict, destabilizing the mutualism. We investigated joint fitness effects of root nodule formation, the...

Data from: What controls variation in carbon use efficiency among Amazonian tropical forests?

Christopher E. Doughty, Gregory R. Goldsmith, Nicolas Raab, Cecile A. J. Girardin, Filio Farfan-Amezquita, Walter Huaraca Huasco, Javier E. Silva-Espejo, Alejandro Araujo-Murakami, Antonio C. L. Da Costa, Wanderley Rocha, David Galbraith, Patrick Meir, Dan B. Metcalfe, Yadvinder Malhi & Walter Huaraca-Huasco
Why do some forests produce biomass more efficiently than others? Variations in Carbon Use Efficiency (CUE: total Net Primary Production (NPP)/ Gross Primary Production (GPP)) may be due to changes in wood residence time (Biomass/NPPwood), temperature, or soil nutrient status. We tested these hypotheses in 14, one ha plots across Amazonian and Andean forests where we measured most key components of net primary production (NPP: wood, fine roots, and leaves) and autotrophic respiration (Ra; wood,...

Raw data from: Experimental evolution can enhance benefits of rhizobia to novel legume hosts

Kenjiro Quides, Alexandra Weisberg, Jerry Trinh, Fathi Salaheldine, Paola Cardenas, Hsu-Han Lee, Ruchi Jariwala, Jeff Chang & Joel Sachs
Legumes preferentially associate with and reward beneficial rhizobia in root nodules, but the processes by which rhizobia evolve to provide benefits to novel hosts remain poorly understood. Using cycles of in planta and in vitro evolution, we experimentally simulated lifestyles where rhizobia repeatedly interact with novel plant genotypes with which they initially provide negligible benefits. Using a fullfactorial replicated design, we independently evolved two rhizobia strains in associations with each of two Lotus japonicus genotypes...

Demographic data collection in STEM organizations

Nicholas Burnett, Alyssa Hernandez, Emily King, Richelle Tanner & Kathryn Wilsterman
Professional organizations in STEM (science, technology, engineering, and mathematics) can use demographic data to quantify recruitment and retention (R&R) of underrepresented groups within their memberships. However, variation in the types of demographic data collected can influence the targeting and perceived impacts of R&R efforts - e.g., giving false signals of R&R for some groups. We obtained demographic surveys from 73 U.S.-affiliated STEM organizations, collectively representing 712,000 members and conference-attendees. We found large differences in the...

Nematode epicuticlin and collagen sequences with YGD/GYR amino acid motifs

Bruno Betschart, Marco Bisoffi & Ferial Alaeddine
Nematoda and Arthropoda have a complex exoskeleton, the cuticle, which is replaced via molts during their development. Major constituents of nematode cuticles are specific collagens and insoluble proteins called cuticlins. The epicuticle is composed of an insoluble protein called epicuticlin. Our objective was to identify and characterize genes and their encoded proteins forming the epicuticle. We were able to complete the identification of the first epicuticlin gene, Asu-epicut1 of Ascaris suum which is composed of...

Effects of natal habitat preference induction on juvenile loon movements

Brian Hoover
NHPI develops in natural systems. Here, we tested for NHPI in juvenile common loons (Gavia immer) that foraged on lakes in the vicinity of their natal lake after fledging. Juveniles visited lakes similar in pH to their natal lakes, and this significant effect persisted after controlling for spatial autocorrelation. On the other hand, juveniles showed no preference for foraging lakes of similar size to their natal one. When lakes were assigned to discrete classes based...

Data from: Computed tomography shows high fracture prevalence among physically active forager-horticulturalists with high fertility

Jonathan Stieglitz, Benjamin C. Trumble, Study Team HORUS, Caleb Finch, Dong Li, Matthew J. Budoff, Hillard Kaplan & Michael Gurven
Modern humans have more fragile skeletons than other hominins, which may result from physical inactivity. Here we test whether reproductive effort also compromises bone strength, by measuring using computed tomography thoracic vertebral bone mineral density (BMD) and fracture prevalence among physically active Tsimane forager-horticulturalists. Earlier onset of reproduction and shorter interbirth intervals are associated with reduced BMD for women. Tsimane BMD is lower versus Americans, but only for women, contrary to simple predictions relying on...

Legume-Rhizobium symbiosis phenotypes

Kenjiro Quides, Yoobeen Lee, Teresa Hur, Sydni Au Hoy & Isaac Min
We coded 771 articles published between January 1, 2009 and September 30, 2020 based on presence of relevant legume or rhizobium phenotypes. We were broadly interested in articles that quantified rhizobia and identified other relevant legume phenotypes. We used Web of Science through Chapman University to search for articles related to the legume-rhizobium symbiosis. After filtering articles for relevance, we identified 25 phenotypes present at least once in a single article, and we indicated which...

Data from: Spatial variation in throughfall, soil, and plant water isotopes in a temperate forest

Gregory R. Goldsmith, Scott T. Allen, Sabine Braun, Nadine Engbersen, Clara Romero González-Quijano, James W. Kirchner & Rolf T.W. Siegwolf
Studies of stable isotopes of water in the environment have been fundamental to advancing our understanding of how water moves through the soil-plant-atmosphere continuum; however, much of this research focuses on how water isotopes vary in time, rather than in space. We examined the spatial variation in the δ18O and δ2H of throughfall and bulk soil water, as well as branch xylem and bulk leaf water of Picea abies (Norway Spruce) and Fagus sylvatica (Beech),...

Data from: Deliberation favours social efficiency by making people disregard their relative shares: evidence from USA and India

Valerio Capraro, Brice Corgnet, Antonio M. Espín & Roberto Hernán-González
Groups make decisions on both the production and the distribution of resources. These decisions typically involve a tension between increasing the total level of group resources (i.e. social efficiency) and distributing these resources among group members (i.e. individuals' relative shares). This is the case because the redistribution process may destroy part of the resources, thus resulting in socially inefficient allocations. Here we apply a dual-process approach to understand the cognitive underpinnings of this fundamental tension....

Chromophoric Dissolved Organic Matter (CDOM) Across An Elevational Gradient from Sea Level to Mountain Lakes

Kyle Juetten, Angela Strecker, Aaron Harrison, Zachary Landram, Warren De Bruyn & Catherine Clark

Data from: Investment in territorial defence relates to recent reproductive success in common loons Gavia immer

Jeremy A. Spool, Lauren V. Riters & Walter H. Piper
As the value of a limited resource such as a territory increases, animals should invest more in the defence of that resource. Because reproductive success often depends on the quality of a breeding territory, reproductive success or failure may alter the perceived value of territory and affect an animal's investment in territorial defence. We used common loons (Gavia immer) to test the hypothesis that animals with recent breeding success would show stronger territorial defence than...

Eddy flux measurements and transfer velocities of momentum, sensible heat, water vapor, and sulfur dioxide at Scripps Pier

Eric Saltzman, Jack Porter & Warren De Bruyn
This data set contains air/sea eddy covariance fluxes and related data measured at Scripps Pier in La Jolla, California. The goal of this study was to determine transfer velocities for momentum, sensible heat, water vapor, and sulfur dioxide in order to study the process of air/sea deposition of highly soluble gases. The measurements were made during April, 2014.

Data from: A selfish genetic element linked to increased lifespan impacts metabolism in female house mice

Patricia C Lopes & Anna K Lindholm
Gene drive systems can lead to the evolution of traits that further enhance the transmission of the driving element. In gene drive, one allele is transmitted to offspring at a higher frequency than the homologous allele. This has a range of consequences, which generally include a reduction in fitness of the carrier of the driving allele, making such systems selfish. The t haplotype is one such driver, found in house mice. It is linked to...

Data from: Flexibility of fetal tolerance: Immune function during pregnancy varies between ecologically distinct populations

Carmen Hové, Benjamin Trumble, Amy Anderson, Jonathan Stieglitz, Hillard Kaplan, Michael Gurven & Aaron Blackwell
Background and objectives: Among placental mammals, females undergo immunological shifts during pregnancy to accommodate the fetus (i.e. fetal tolerance). Fetal tolerance has primarily been characterized within post-industrial populations experiencing evolutionarily novel conditions (e.g. reduced pathogen exposure), which may shape maternal response to fetal antigens. This study investigates how ecological conditions affect maternal immune status during pregnancy by comparing the direction and magnitude of immunological changes associated with each trimester among the Tsimane (a subsistence population...

Data from: Mother's social status is associated with child health in a horticulturalist population

Sarah Alami, Christopher Von Rueden, Edmond Seabright, Thomas S. Kraft, Aaron D. Blackwell, Jonathan Stieglitz, Hillard Kaplan & Michael Gurven
High social status is often associated with greater mating opportunities and fertility for men, but do women also obtain fitness benefits of high status? Greater resource access and child survivorship may be principal pathways through which social status increases women’s fitness. Here we examine whether peer-rankings of women’s social status (indicated by political influence, project leadership and respect) positively covaries with child nutritional status and health in a community of Amazonian horticulturalists. We find that...

Tsimane physiological dysregulation data

Thomas Kraft, Jonathan Stieglitz, Benjamin Trumble, Angela Garcia, Hillard Kaplan & Michael Gurven
Humans have the longest post-reproductive lifespans and lowest rates of actuarial aging among primates. Understanding the links between slow actuarial aging and physiological change is critical for improving the human “healthspan”. Physiological dysregulation may be a key feature of aging in industrialized populations with high burdens of chronic “diseases of civilization”, but little is known about age trajectories of physiological condition in subsistence populations with limited access to public health infrastructure. To better characterize human...

Loon Project Database

Walter Piper
Data collected since 1993 in Oneida County, Wisconsin, on the breeding and territorial behavior of the common loon, Gavia immer. This study population is marked with USGS metal bands and colored leg bands for individual identification. It includes many individuals banded as chicks, whose life histories are known thoroughly. Data are collected from April through August of most years on this migratory species. Data are in the form of a MS-Access file, with many individual...

Spatio-temporal persistence of zooplankton communities in the Gulf of Alaska

Brian Hoover & Marisol Garcia-Reyes
Spatial structuring of mid-trophic level forage communities in the Gulf of Alaska (GoA) is poorly understood, even though it has clear implications for the health of fisheries and marine wildlife populations. Here, we test the hypothesis that summertime (May-August) mesozooplankton communities are spatially-persistent across years of varying ocean conditions, including during the marine heatwave of 2014-2016. We use spatial ordinations and hierarchical clustering of Continuous Plankton Recorder (CPR) sampling over 17 years (2000-2016) to (1)...

Data from: Climatic influences on winter precipitation use by trees in summer

Gregory Goldsmith
Trees in seasonal climates may use water originating from both winter and summer precipitation. However, the seasonal origins of water used by trees have not been systematically studied. We used stable isotopes of water to compare the seasonal origins of water found in three common tree species across 24 Swiss forest sites sampled in two different years. The data set provides information on the sites (e.g., latitude/longitude, site name), site characteristics (e.g., weather/climate), tree species...

Data from: Structure-based network analysis of activation mechanisms in the ErbB family of receptor tyrosine kinases: the regulatory spine residues are global mediators of structural stability and allosteric interactions

Kevin James, Gennady M. Verkhivker & Kevin A. James
The ErbB protein tyrosine kinases are among the most important cell signaling families and mutation-induced modulation of their activity is associated with diverse functions in biological networks and human disease. We have combined molecular dynamics simulations of the ErbB kinases with the protein structure network modeling to characterize the reorganization of the residue interaction networks during conformational equilibrium changes in the normal and oncogenic forms. Structural stability and network analyses have identified local communities integrated...

Data from: Structural and defensive roles of angiosperm leaf venation network reticulation across an Andes-Amazon elevation gradient

Benjamin Blonder, Norma Salinas, Lisa Patrick Bentley, Alexander Shenkin, Percy Orlando Chambi Porroa, Yolvi Valdez Tejeira, Tatiana Erika Boza Espinoza, Gregory R. Goldsmith, Lucas Enrico, Roberta Martin, Gregory P. Asner, Sandra Díaz, Brian J. Enquist & Yadvinder Malhi
1.The network of minor veins of angiosperm leaves may include loops (reticulation). Variation in network architecture has been hypothesized to have hydraulic and also structural and defensive functions. 2.We measured venation network trait space in eight dimensions for 136 biomass-dominant angiosperm tree species along a 3,300 m elevation gradient in southeastern Peru. We then examined the relative importance of multiple ecological, and evolutionary predictors of reticulation. 3.Variation in minor venation network reticulation was constrained to...

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Affiliations

  • Chapman University
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