45 Works

Evaluating the contributions of purifying selection and progeny-skew in dictating within-host Mycobacterium tuberculosis evolution

Ana Y. Morales-Arce, Rebecca Harris, Anne Stone & Jeffrey Jensen
The within-host evolutionary dynamics of TB remain unclear, and underlying biological characteristics render standard population genetic approaches based upon the Wright-Fisher model largely inappropriate. In addition, the compact genome combined with an absence of recombination is expected to result in strong purifying selection effects. Thus, it is imperative to establish a biologically-relevant evolutionary framework incorporating these factors in order to enable an accurate study of this important human pathogen. Further, such a model is critical...

Data for: Landscape scale variation in the hydrologic niche of California coast redwood

Emily J. Francis, Gregory P. Asner, Katharine J. Mach & Christopher B. Field
Topoclimatic diversity within forest landscapes can underlie variation in water availability, which may correspond to patterns in habitat suitability of tree species with differing hydrologic niches. However, the trade-off between the collection of data at a fine grain size over large spatial extents has limited comprehensive analyses of landscape scale variation in habitat suitability. We present a fine scale analysis of the roles of topographic gradients in moisture availability, soil water storage, and fog frequency...

Data from: Nitrogen fertilizer decreases survival and reproduction of female locusts by increasing plant protein to carbohydrate ratio

Marion Le Gall, Mira Word, Natalia Thompson, Alioune Beye & Arianne Cease
1. Nitrogen limitation theory predicts that terrestrial plants should benefit from nitrogen inputs and that herbivores should benefit from subsequent higher plant protein contents. While this pattern has generally been supported, some herbivorous insects have shown preference and higher performance on low protein (p), high carbohydrate (c) diets as juveniles. 2. However, little is known about the effects on reproduction in adults. Using nitrogen fertilizer, we demonstrate that high plant p:c has negative effects on...

Data from: Age-based changes in kairomone response mediate task partitioning in stingless bee soldiers (Tetragonisca angustula)

Kaitlin Baudier, Meghan Bennett, Madeleine Ostwald, Sarah Hart, Theodore Pavlic & Jennifer Fewell
Collective defense is one of the most ubiquitous behaviors performed by social groups. Because of its importance, complex societies may engage a set of defensive specialists, with physical and/or neurological attributes tuned for defense against specific invaders. These strategies must be balanced, however, with the need to flexibly respond to different threat levels and sources. Insect societies rely heavily on olfaction for detecting and communicating in the context of defense. We therefore asked whether threat...

Data from: Foraging zebra finches (Taeniopygia guttata) are public information users rather than conformists

Edwin J. C. Van Leeuwen, Thomas Morgan & Katharina Riebel
Social learning enables adaptive information acquisition provided that it is not random but selective. To understand species typical decision-making and to trace the evolutionary origins of social learning, the heuristics social learners use need to be identified. Here, we experimentally tested the nature of majority influence in the zebra finch. Subjects simultaneously observed two demonstrator groups differing in relative and absolute numbers (ratios 1:2 / 2:4 / 3:3 / 1:5) foraging from two novel food...

Tree phenology and abiotic variables 1998-2017 at Ngogo, Kibale National Park, Uganda

Kevin Potts, David Watts, Kevin Langergraber & John Mitani
Fruit production in tropical forests varies considerably in space and time, with important implications for frugivorous consumers. Characterizing temporal variation in forest productivity is thus critical for understanding adaptations of tropical forest frugivores, yet long-term phenology data from the tropics, in particular from African forests, are still scarce. Similarly, as the abiotic factors driving phenology in the tropics are predicted to change with a warming climate, studies documenting the relationship between climatic variables and fruit...

Data from: Nutrient availability controls the impact of mammalian herbivores on soil carbon and nitrogen pools in grasslands

Judith Sitters, E.R. Jasper Wubs, Elisabeth S. Bakker, Thomas W. Crowther, Peter B. Adler, Sumanta Bagchi, Jonathan D. Bakker, Lori Biederman, Elizabeth T. Borer, Elsa E. Cleland, Nico Eisenhauer, Jennifer Firn, Laureano Gherardi, Nicole Hagenah, Yann Hautier, Sarah E. Hobbie, Johannes M.H. Knops, Andrew S. MacDougall, Rebecca L. McCulley, Joslin L. Moore, Brent Mortensen, Pablo L. Peri, Suzanne M. Prober, Charlotte Riggs, Anita C. Risch … &
Grasslands have been subject to considerable alteration due to human activities globally, including widespread changes in populations and composition of large mammalian herbivores and elevated supply of nutrients. Grassland soils remain important reservoirs of carbon (C) and nitrogen (N). Herbivores may affect both C and N pools and these changes likely interact with increases in soil nutrient availability. Given the scale of grassland soil fluxes, such changes can have striking consequences for atmospheric C concentrations...

Inter- and intraspecific trait variation shape multidimensional trait overlap between two plant invaders and the invaded communities

Kenny Helsen, Elisa Van Cleemput, Leonardo Bassi, Bente Graae, Ben Somers, Benjamin Blonder & Olivier Honnay
Invader success and ecosystem impact are both expected to be largely driven by the functional trait distinctiveness of the resident species relative to the invaded communities. To understand the importance of trait distinctiveness for plant invasions, and the native community’s trait response to the invasion, it is key to measure multiple traits simultaneously, and to incorporate intraspecific trait variation. Here we explored multidimensional patterns of inter- and intraspecific trait variation during the invasion of two...

Evolutionary history of Neotropical savannas geographically concentrates species, phylogenetic and functional diversity of lizards

Jessica Fenker, Fabricius M. C. B. Domingos, Leonardo G. Tedeschi, Dan F. Rosauer, Fernanda P. Werneck, Guarino R. Colli, Roger M. D. Ledo, Emanuel M. Fonseca, Adrian A. Garda, Derek Tucker, , Maria F. Breitman, Flavia Soares, Lilian G. Giugliano & Craig Moritz
Supporting information (scripts) to compute diversity and endemism indices copied and available by Dan Rosauer (https ://github.com/DanRosauer/phylospatial). Aim: Understanding where and why species diversity is geographically concentrated remains a challenge in biogeography and macroevolution. This is true for the Cerrado, the most biodiverse tropical savanna in the world, which has experienced profound biodiversity loss. Previous studies have focused on a single metric (species composition), neglecting the fact that ‘species’ within the biome are often composed...

Data from: Demography, life history trade-offs, and the gastrointestinal virome of wild chimpanzees

Jacob D. Negrey, Melissa Emery Thompson, Kevin E. Langergraber, Zarin P. Machanda, John C. Mitani, Martin N. Muller, Emily Otali, Leah A. Owens, Richard W. Wrangham & Tony L. Goldberg
In humans, senescence increases susceptibility to viral infection. However, comparative data on viral infection in free-living non-human primates—even in our closest living relatives, chimpanzees and bonobos (Pan troglodytes and P. paniscus)—are relatively scarce, thereby constraining an evolutionary understanding of age-related patterns of viral infection. We investigated a population of wild eastern chimpanzees (P. t. schweinfurthii), using metagenomics to characterize viromes (full viral communities) in the feces of 42 sexually mature chimpanzees (22 males, 20 females)...

Desiccation limits recruitment in the pleometrotic desert seed-harvester ant Veromessor pergandei

Robert Johnson
The desert harvester ant Veromessor pergandei displays geographic variation in colony founding with queens initiating nests singly (haplometrosis) or in groups (pleometrosis). The transition from haplo- to pleometrotic founding is associated with lower rainfall. Numerous hypotheses have been proposed to explain the evolution of cooperative founding in this species, but the ultimate explanation remains unanswered. In laboratory experiments, water level was positively associated with survival, condition, and brood production by single queens. Queen survival also...

Ancient life and moving fluids

Brandt M. Gibson, David J. Furbish, Imran A. Rahman, Mark W. Schmeeckle, Marc Laflamme & Simon A.F. Darroch
Over 3.7 billion years of Earth history, life has evolved complex adaptations to help navigate and interact with the fluid environment. Consequently, fluid dynamics has become a powerful tool for studying ancient fossils, providing insights into the paleobiology and -ecology of extinct organisms from across the tree of life. In recent years, this approach has been extended to the Ediacara biota, an enigmatic assemblage of Neoproterozoic soft-bodied organisms that represent the first major radiation of...

Cadmium exposure persistently modulates the gut-liver axis in an Alzheimer’s disease mouse model

Angela Zhang, Megumi Matsushita, Zhengui Xia, Liang Zhang, Xiaojian Shi, Haiwei Gui & Julia Yue Cui
The human Apolipoprotein E4 (ApoE4) variant is the strongest known genetic risk factor for Alzheimer’s disease (AD). Cadmium (Cd) has been shown to impair learning and memory at a greater extent in humanized ApoE4 knock-in (ApoE4-KI) mice as compared to the ApoE3 (common allele)-KI mice. In this study, we determined the extent that cadmium interacts with the ApoE4 gene variants to modify the gut-liver axis, which is important for xenobiotic biotransformation and nutrient homeostasis. Large...

Complex relationship between tunneling patterns and individual behaviors in termites

Nobuaki Mizumoto, Paul Bardunias & Stephen Pratt
The nests built by social insects are complex group-level structures that emerge from interactions among individuals following simple behavioral rules. Nest patterns vary among species, and the theory of complex systems predicts that there is no simple one-to-one relationship between variations in collective patterns and variation in individual behaviors. Therefore, a species-by-species comparison of the actual building process is essential to understand the mechanism producing diverse nest patterns. Here we compare tunnel formation of three...

Termite males enhance mating encounters by changing speed according to density

Nobuaki Mizumoto, Arturo Rizo, Stephen Pratt & Thomas Chouvenc
Search theory predicts that animals evolve efficient movement patterns to enhance encounter rates with specific targets. The optimal movements vary with the surrounding environments, which may explain the observation that animals often switch their movement patterns depending on conditions. However, the effectiveness of behavioral change during search is rarely evaluated because it is difficult to examine the actual encounter dynamics. Here we studied how partner-seeking termites update their search strategies depending on the local densities...

Data from: Testosterone regulates CYP2J19-linked carotenoid signal expression in male red-backed fairywrens (Malurus melanocephalus)

Sarah Khalil, Joseph Welklin, Kevin McGraw, Jordan Boersma, Hubert Schwabl, Michael Webster & Jordan Karubian
Carotenoid pigments produce most red, orange, and yellow colours in vertebrates. This coloration can serve as an honest signal of quality that mediates social and mating interactions, but our understanding of the underlying mechanisms that control carotenoid signal production, including how different physiological pathways interact to shape and maintain these signals, remains incomplete. We investigated the role of testosterone in mediating gene expression associated with a red plumage sexual signal in red-backed fairywrens (Malurus melanocephalus)....

Defining Relictual Biodiversity: Conservation Units in Speckled Dace (Leuciscidae: Rhinichthys osculus) of the Greater Death Valley Ecosystem

Steven Mussmann, Marlis Douglas, David Oakey & Michael Douglas
The tips in the tree of life serve as foci for conservation and management, yet clear delimitations are masked by inherent variance at the species-population interface. Analyses using thousands of nuclear loci can potentially sort inconsistencies, yet standard categories applied to this parsing are themselves potentially conflicting and/or subjective [e.g., DPS (distinct population segments); DUs (Diagnosable Units-Canada); MUs (management units); SSP (subspecies); ESUs (Evolutionarily Significant Units); UIEUs (uniquely identified evolutionary units)]. One potential solution for...

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...

Adaptive trait syndromes along multiple economic spectra define cold and warm adapted ecotypes in a widely distributed foundation tree species

Davis Blasini, Dan Koepke, Kevin Grady, Gerard Allan, Catherine Gehring, Samuel A. Cushman, Thomas Whitham & Kevin Hultine
1. The coordination of traits from individual organs to whole plants is under strong selection because of environmental constraints on resource acquisition and use. However, the tight coordination of traits may provide underlying mechanisms of how locally adapted plant populations can become maladapted because of climate change. 2. To better understand local adaptation in intraspecific trait coordination, we studied trait variability in the widely distributed foundation tree species, Populus fremontii using a common garden near...

Seminal fluid protein divergence among populations exhibiting postmating prezygotic reproductive isolation

Martin Garlovsky, Caroline Evans, Matthew A. Rosenow, Timothy L. Karr & Rhonda R. Snook
Despite holding a central role for fertilisation success, reproductive traits often show elevated rates of evolution and diversification. The rapid evolution of seminal fluid proteins (Sfps) within populations is predicted to cause mis-signalling between the male ejaculate and female reproductive tract between populations resulting in postmating prezygotic (PMPZ) isolation. Crosses between populations of Drosophila montana show PMPZ isolation in the form of reduced fertilisation success in both noncompetitive and competitive contexts. Here we test whether...

Data from: Gut microbiome critically impacts PCB-induced changes in metabolic fingerprints and the hepatic transcriptome in mice

Joe Lim, Julia Cui, Xueshu Li, Hans-Joachim Lehmler, Dongfang Wang & Haiwei Gu
Polychlorinated biphenyls (PCBs) are ubiquitously detected in the environment and have been linked to metabolic diseases. The liver serves as a central hub for the metabolism of xenobiotics and endogenous metabolites. Gut dysbiosis is recognized as a critical regulator of disease susceptibility, however, little is known regarding how PCBs and gut microbiome interact to modulate the interface between xenobiotic and intermediary metabolism. We hypothesized that the gut microbiome regulates PCBs-mediated changes in the metabolic fingerprints...

PO2 of the metathoracic ganglion in response to progressive hypoxia in an insect

Jon Harrison, Stefan Hetz & Wolfgang Waser
Mammals regulate their brain tissue PO2 tightly, and only small changes in brain PO2 are required to elicit compensatory ventilation. However, unlike the flow-through cardiovascular system of vertebrates, insect tissues exchange gases through blind-ended tracheoles that may involve a more prominent role for diffusive gas exchange. We tested the effect of progressive hypoxia on ventilation and the PO2 of the metathoracic ganglion (neural site of control of ventilation) using micro-electrodes in the American locust, Schistocerca...

Early life exposure to environmental contaminants (BDE-47, TBBPA, and BPS) produced persistent gut dysbiosis in adult male mice

Julia Yue Cui, Matthew Gomez, Alexander Suvorov, Xiaojian Shi, Haiwei Gu & Sridhar Mani
The gut microbiome is a pivotal player in toxicological responses. We investigated the effects of maternal exposure to 3 human health-relevant toxicants (BDE-47, TBBPA, and BPS) on the composition and metabolite levels (bile acids [BAs] and short chain fatty acids [SCFAs]) of the gut microbiome in adult pups. CD-1 mouse dams were orally exposed to vehicle (corn oil, 10ml/kg), BDE-47 (0.2 mg/kg), TBBPA (0.2 mg/kg), or BPS (0.2 mg/kg) once daily from gestational day 8...

Data from quantitative real-time PCR of corticotropin-releasing hormone and glucocorticoid receptor in the hippocampus and hypothalamus of rats subjected to midline fluid percussion injury or control sham surgery.

Rachel Rowe, Caitlin Bromberg, Andrew Condon, Samantha Ridgway, Gokul Krishna, Pamela Garcia-Filion, P. David Adelson & Theresa C. Thomas
These files contain all data from quantitative real-time PCR of corticotropin-releasing hormone (CRH) and glucocorticoid receptor (GR) measured in the hippocampus and hypothalamus of male and female rats. Rats were randomly assigned to a treatment group before the initiation of the study. Rats received a control sham surgery or were subjected to midline fluid percussion injury to induce a diffuse traumatic brain injury. Tissue biopsies were collected at 7 days post-injury and analyzed via quantitative...

Equilibrium in plant functional trait responses to warming is stronger under higher climate variability during the Holocene

Pierre Gaüzère, Lars Iversen, Alistair Seddon, Cyrille Violle & Ben Blonder
Aim.The functional trait composition of plant communities is thought to be largely determined by climate, but relationships between contemporary trait distributions and climate are often weak. Spatial mismatches between trait and climatic conditions are commonly thought to arise from disequilibrium responses to past environmental changes. We here investigated whether current trait-climate disequilibrium were likely to emerge during plant functional responses to Holocene climate warming. Location.North America Time period.14-0Kya Major taxa studied. Terrestrial plants Methods. We...

Registration Year

  • 2020

Resource Types

  • Dataset


  • Arizona State University
  • University of Washington
  • Desert Botanical Garden
  • University of Queensland
  • University of California, Santa Barbara
  • University of Kansas
  • Federal University of Technology – Paraná
  • Universidade Católica de Brasília
  • Sun Yat-sen University
  • Vrije Universiteit Brussel