12 Works

Raw isotope values from fossil herbivore enamel from sites located below 37° latitude within the contiguous United States

Melissa Pardi & Larisa DeSantis
Paleoecological interpretations are based on our understanding of dietary and habitat preferences of fossil taxa. While morphology provides approximations of diets, stable isotope proxies provide insights into the realized diets of animals. We present a synthesis of the isotopic ecologies (δ13C from tooth enamel) of North American mammalian herbivores since ~7 Ma. We ask: 1) Do morphological interpretations of dietary behavior agree with stable isotope proxy data?; 2) Are grazing taxa specialists, or is grazing...

Microbiome reduction and endosymbiont gain from a switch in sea urchin life-history

Tyler Carrier, Brittany Leigh, Dione Deaker, Hannah Devens, Gregory Wray, Seth Bordenstein, Maria Byrne & Adam Reitzel
Animal gastrointestinal tracts harbor a microbiome that is integral to host function, yet species from diverse phyla have evolved a reduced digestive system or lost it completely. Whether such changes are associated with alterations in the diversity and/or abundance of the microbiome remains an untested hypothesis in evolutionary symbiosis. Here, using the life-history transition from planktotrophy (feeding) to lecithotrophy (non-feeding) in the sea urchin Heliocidaris, we demonstrate that the lack of a functional gut corresponds...

Accounting for Real Exchange Rates Using Micro‐Data

Mario J. Crucini & Anthony Landry
The classical dichotomy predicts that all of the time-series variance in the aggregate real exchange rate is accounted for by non-traded goods in the consumer price index (CPI) basket because traded goods obey the Law of One Price. In stark contrast, Engel (1999) claimed the opposite: that traded goods accounted for all of the variance. Using micro-data and recognizing that final good prices include both the cost of the goods themselves and local, non-traded inputs...

Data from: Socioeconomic status effects on health vary between rural and urban Turkana

Amanda Lea
Background and objectives: Understanding the social determinants of health is a major goal in evolutionary biology and human health research. Low socioeconomic status (often operationalized as absolute material wealth) is consistently associated with chronic stress, poor health, and premature death in high income countries. However, the degree to which wealth gradients in health are universal—or are instead made even steeper under contemporary, post-industrial conditions—remains poorly understood. Methodology: We quantified absolute material wealth and several health...

On What States Do Prices Depend? Answers from Ecuador

Craig Benedict, Mario J. Crucini & Anthony Landry
In this paper, we argue that differences in the cost structures across sectors play an important role in firms’ decisions to adjust their prices. We develop a menu-cost model of pricing in which retail firms intermediate trade between producers and consumers. An important facet of our analysis is that the labor-cost share of retail production differs across goods and services in the consumption basket. For example, the price of gasoline at the retail pump is...

Dissecting incongruence between concatenation- and quartet-based approaches in phylogenomic data

Xing-Xing Shen, Jacob Steenwyk & Antonis Rokas
Topological conflict or incongruence is widespread in phylogenomic data. Concatenation- and coalescent-based approaches often result in incongruent topologies, but the causes of this conflict can be difficult to characterize. We examined incongruence stemming from conflict between likelihood-based signal (quantified by the difference in gene-wise log likelihood score or ΔGLS) and quartet-based topological signal (quantified by the difference in gene-wise quartet score or ΔGQS) for every gene in three phylogenomic studies in animals, fungi, and plants,...

Molecular basis for the evolved instability of a human G-protein coupled receptor

Laura Chamness, Nathan Zelt, Charles Kuntz, Brian Bender, Wesley Penn, Joshua Ziarek, Jens Meiler, Jonathan Schlebach & Haley Harrington
Membrane proteins are prone to misfolding and degradation. This is particularly true for mammalian forms of the gonadotropin-releasing hormone receptor (GnRHR). Although they function at the plasma membrane, mammalian GnRHRs accumulate within the secretory pathway. Their apparent instability is believed to have evolved through selection for attenuated GnRHR activity. Nevertheless, the molecular basis of this adaptation remains unclear. We show that adaptation coincides with a C-terminal truncation that compromises the translocon-mediated membrane integration of its...

Data from: Pop-out search instigates beta-gated feature selectivity enhancement across V4 layers

Jacob Westerberg, Elizabeth Sigworth, Jeffrey Schall & Alexander Maier
Visual search is a work-horse for investigating how attention interacts with processing of sensory information. Attentional selection has been linked to altered cortical sensory responses and feature preferences (i.e., tuning). However, attentional modulation of feature selectivity during search is largely unexplored. Here we map the spatiotemporal profile of feature selectivity during singleton search. Monkeys performed search where a pop-out feature determined the target of attention. We recorded laminar neural responses from visual area V4. We...

Implicit Theories of Negotiation: Developing a Measure of Agreement Fluidity

Ray Friedman, Robin Pinkley, William Bottom, Wu Liu & Michele Gelfand

Supplement to: Global impact of the COVID-19 pandemic on stroke care and intravenous thrombolysis

Raul Nogueira, Muhammed Qureshi, Mohamad Abdalkader, Sheila Martins, Hiroshi Yamagami, Zhongming Qiu, Ossama Mansour, Anvitha Sathya, Anna Czlonkowska, Georgios Tsivgoulis, Diana Aguiar De Sousa, Jelle Demeestere, Robert Mikulik, Peter Vanacker, James Siegler, Janika Korv, Jose Biller, Conrad Liang, Navdeep Sangha, Alicia Zha, Alexandra Czap, Christine Holmstedt, Tanya Turan, George Ntaios, Konark Malhotra … & Thanh Nguyen
Objective: The objectives of this study were to measure the global impact of the pandemic on the volumes for intravenous thrombolysis (IVT), IVT transfers, and stroke hospitalizations over 4 months at the height of the pandemic (March 1 to June 30, 2020) compared with two control 4-month periods. Methods: We conducted a cross-sectional, observational, retrospective study across 6 continents, 70 countries, and 457 stroke centers. Diagnoses were identified by their ICD-10 codes and/or classifications in...

Ecological adaptation drives wood frog population divergence in life history traits

Emily Le Sage
Phenotypic variation among populations is thought to be generated from spatial heterogeneity in environments that exert selection pressures that overcome the effects of gene flow and genetic drift. Here, we tested for evidence of isolation by distance or by ecology (i.e., ecological adaptation) to generate variation in early life history traits and phenotypic plasticity among 13 wood frog populations spanning 1200 km and 7° latitude. We conducted a common garden experiment and related trait variation...

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Affiliations

  • Vanderbilt University
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  • National Bureau of Economic Research
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  • Bank of Canada
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  • Emory University School of Medicine
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  • Hong Kong Polytechnic University
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  • New York University Langone Medical Center
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  • Zhejiang University
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  • Kwame Nkrumah University of Science and Technology
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  • Ain Shams University
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  • Ain Shams University Hospital
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