504 Works

Data from: When to stay and when to leave? Proximate causes of dispersal in an endangered social carnivore

Dominik Behr, John McNutt, Arpat Ozgul & Gabriele Cozzi
1. Reliable estimates of birth, death, emigration, and immigration rates are fundamental to understanding and predicting the dynamics of wild populations and, consequently, inform appropriate management actions. However, when individuals disappear from a focal population, inference on their fate is often challenging. 2. Here we used 30 years of individual-based mark-recapture data from a population of free-ranging African wild dogs (Lycaon pictus) in Botswana and a suite of individual, social, and environmental predictors to investigate...

Population genomics and haplotype analysis in spelt and bread wheat identifies a gene regulating glume color

Michael Abrouk, Naveenkumar Athiyannan, Thomas Müller & Simon Krattinger
The cloning of agriculturally important genes is often complicated by haplotype variation across crop cultivars. Access to pan-genome information greatly facilitates the assessment of structural variations and rapid candidate gene identification. Here, we identified the red glume 1 (Rg-B1) gene using association genetics and haplotype analyses in ten reference-grade wheat genomes. Glume color is an important trait to characterize wheat cultivars. Red glumes are frequent among Central European spelt, a dominant wheat subspecies in Europe...

Bird abundance data for the period 2002-2014 from the French Breeding Bird Survey (STOC)

Vicente García-Navas & Wilfried Thuiller
Abundance data on breeding birds from the French Breeding Bird Survey (Suivi Temporel des Oiseaux Communs, STOC), for the period 2002-2014. The dataset comprises 7,115 bird communities. Only 107 common species were included in the study.

Data from: Genomic signatures of convergent adaptation to Alpine environments in three Brassicaceae species

Christian Rellstab, Stefan Zoller, Christian Sailer, Andrew Tedder, Felix Gugerli, Kentaro K. Shimizu, Rolf Holderegger, Alex Widmer & Martin C. Fischer
It has long been discussed to what extent related species develop similar genetic mechanisms to adapt to similar environments. Most studies documenting such convergence have either used different lineages within species or surveyed only a limited portion of the genome. Here, we investigated whether similar or different sets of orthologous genes were involved in genetic adaptation of natural populations of three related plant species to similar environmental gradients in the Alps. We used whole-genome pooled...

Data from: Nasal compartmentalization in Kogiidae (Cetacea, Physeteroidea): Insights from a new late Miocene dwarf sperm whale from the Pisco Formation

Aldo Benites-Palomino, Jorge Velez-Juarbe, Alberto Collareta, Diana Ochoa, Ali Altamirano, Matthieu Carré, Manuel J. Laime, Mario Urbina & Rodolfo Salas-Gismondi
Facial compartmentalization in the skull of extant pygmy whales (Kogiidae) is a unique feature among cetaceans that allows the housing of a wide array of organs responsible for echolocation. Recent fossil findings depict a remarkable disparity of the facial bone organization in Miocene kogiids, but the significance of such a rearrangement for the evolution of the clade has been barely explored. Here we describe Kogia danomurai sp. nov., a late Miocene (ca. 5.8 Ma) taxon...

Data to Prior exposure to stress allows the maintenance of an ecosystem cycle following severe acidification

Sofia Van Moorsel, Justin Marleau, Andrew Gonzalez, Owen Petchey, Charles Bazerghi & Jorge Negrin Dastis
This freshwater mesocosm study was conducted in 19 out of 110 mesocosms at the Large Experimental Array of Ponds (LEAP) at the Gault Nature Reserve in Mont-St-Hilaire, QC, Canada (45°32' N, 73°08' W, 122 m a.s.l.) between May and October 2018 for a total of 147 days. On 24 May 2018, the mesocosms (1100L stock tanks, Rubbermaid, Huntersville, NC, USA) were filled with approximately 1000 liters of unfiltered lake water via a pipeline from oligotrophic...

Data for: Immobilization of molecular catalysts on electrode surfaces using host–guest interactions

S. David Tilley, Laurent Sévery, Jacek Szczerbiński, Mert Taskin, Isik Tuncay, Fernanda Nunes, Chiara Cignarella, Gabriele Tocci, Olivier Blacque, Juerg Osterwalder, Renato Zenobi & Marcella Iannuzzi
Anchoring molecular catalysts on electrode surfaces combines the high selectivity and activity of molecular systems with the practicality of heterogeneous systems. Molecular catalysts, however, are far less stable than traditional heterogeneous electrocatalysts, and therefore a method to easily replace anchored molecular catalysts that have degraded could make such electrosynthetic systems more attractive. Here, we apply a non-covalent ‘click’ chemistry approach to reversibly bind molecular electrocatalysts to electrode surfaces through host–guest complexation with surface-anchored cyclodextrins. The...

CT and 3D Data from: A large Middle Devonian eubrachythoracid ‘placoderm’ (Arthrodira) jaw from northern Gondwana

Melina Jobbins, Martin Rücklin, Thodoris Argyriou & Christian Klug
Leptodontichthys ziregensis is a newly described eubrachythoracid arthrodire from the Middle Devonian of Morocco. Only the posterior superognathal is preserved, it possesses features which were, so far, seen in Late Devonian forms. The jaw bone presents two sets of teeth, one lateral and one posterior, with dentinous tissue, pulp cavities and vascular canals preserved. The CT scans provided here are the ones used for the study. The complete jaw data was used for the overall...

Genomic vulnerability to rapid climate warming in a tree species with a long generation time

Benjamin Dauphin, Christian Rellstab, Max Schmid, Stefan Zoller, Dirk Karger, Sabine Brodbeck, Frédéric Guillaume & Felix Gugerli
The ongoing increase in global temperature affects biodiversity, especially in mountain regions where climate change is exacerbated. As sessile, long-lived organisms, trees are especially challenged in terms of adapting to rapid climate change. Here, we show that low rates of allele frequency shifts in Swiss stone pine (Pinus cembra) occurring near the treeline result in high genomic vulnerability to future climate warming, presumably due to the species’ long generation time. Using exome sequencing data from...

Gene annotation of the Fhb1 locus on the assembly of bread wheat variety Norin 61

Dario Copetti
In the areas with wet climate of Eastern Asia, Fusarium head blight (FHB) is a major threat to bread wheat production. A source of FHB resistance (Fhb1) was identified in the Asian wheat germplasm and through classical breeding it was introduced in several varieties (https://doi.org/10.1186/s40066-017-0139-z ). The molecular determinant was identified as a deletion in an histidine-rich calcium-binding-protein gene on chromosome 3BS. (https://doi.org/10.1038/s41588-019-0426-7). The allele is common in many East Asia wheat varieties, but not...

Ecological causes of fluctuating natural selection on habitat choice in an amphibian

Joseph Van Buskirk & David C. Smith
We estimated natural selection targeting three traits related to habitat choice in a frog (Pseudacris maculata) breeding in pools on the rocky shores of Isle Royale, Michigan, over 16 years. Our aim was to identify the form and ecological causes of annual variation in directional and correlational selection as expressed in the survival and growth of tadpoles. We found directional selection favoring early breeding, but pool choice was under weak stabilizing selection. However, the form...

Data from: Regime shifts in an Early Triassic subtropical ecosystem

Elke Schneebeli
The Early Triassic was one of the most remarkable time intervals in Earth History. To begin with, life on Earth had to face one of the largest subaerial volcanic degassing, the Siberian Traps, followed by a plethora of accompanying environmental hazards with pronounced and repeated climatic changes. These changes not only led to repeated and, for several marine nektonic clades, intense extinction events but also to significant changes in terrestrial ecosystems. The Early Triassic terrestrial...

Data from: Collateral sensitivity interactions between antibiotics depend on local abiotic conditions

Richard Allen
Mutations conferring resistance to one antibiotic can increase (cross resistance) or decrease (collateral sensitivity) resistance to others. Antibiotic combinations displaying collateral sensitivity could be used in treatments that slow resistance evolution. However, lab-to-clinic translation requires understanding whether collateral effects are robust across different environmental conditions. Here, we isolated and characterized resistant mutants of Escherichia coli using five antibiotics, before measuring collateral effects on resistance to other paired antibiotics. During both isolation and phenotyping, we varied...

Decline and Fall: the causes of group failure in cooperatively breeding meerkats

Christopher Duncan, Marta Manser & Tim Clutton-Brock
In many social vertebrates, variation in group persistence exerts an important effect on individual fitness and population demography. However, few studies have been able to investigate the failure of groups or the causes of the variation in their longevity. We use data from a long-term study of cooperatively breeding meerkats, Suricata suricatta, to investigate the different causes of group failure and the factors that drive these processes. Many newly formed groups failed within a year...

Data from: Life-history responses of a freshwater rotifer to copper pollution

Federica R. Schanz, Stefan Sommer, Andrea Lami, Diego Fontaneto & Arpat Ozgul
In organisms with dormant stages, life-history responses to past pollution can be studied retrospectively. Here, we study such responses in a rotifer (Brachionus calyciflorus) from the once heavily copper-polluted Lake Orta (Italy). We extracted resting eggs from sediments, established clonal lineages from hatchlings, and exposed newborns of these lineages to one of three copper concentrations that each mimicked a specific period in the lake’s pollution history. For each rotifer, we daily collected life-table data. We...

Time-Optimal Planning for Quadrotor Waypoint Flight

Philipp Foehn, Angel Romero & Davide Scaramuzza
Quadrotors are amongst the most agile flying robots. However, planning time-optimal trajectories at the actuation limit through multiple waypoints remains an open problem. This is crucial for applications such as inspection, delivery, search and rescue, and drone racing. Early works used polynomial trajectory formulations, which do not exploit the full actuator potential due to their inherent smoothness. Recent works resorted to numerical optimization, but require waypoints to be allocated as costs or constraints at specific...

Data from: Evolution of dispersal, habit, and pollination in Africa pushed Apocynaceae diversification after the Eocene-Oligocene climate transition

Nicolai M. Nürk, Cássia Bitencourt, Alessandro Rapini, Mark Fishbein, André O. Simões, David J. Middleton, Ulrich Meve, Mary E. Endress & Sigrid Liede-Schumann
Apocynaceae (the dogbane and milkweed family) is one of the ten largest flowering plant families, with approximately 5,350 species and diverse morphology and ecology, ranging from large trees and lianas that are emblematic of tropical rainforests, to herbs in temperate grasslands, to succulents in dry, open landscapes, and to vines in a wide variety of habitats. Despite a specialized and conservative basic floral architecture, Apocynaceae are hyperdiverse in flower size, corolla shape, and especially derived...

Folding and unfolding of the tryptophan zipper in the presence of two thioamide substitutions

Jan Helbing, Jasmin Spekowius & Rolf Pfister
We studied the stability and folding and unfolding kinetics of the tryptophan zipper, containing dierent double thioamide subsitutions. Conformation change was triggered by photoisomerization of an integrated AMPP photoswitch in the turn region of the hairpin, and transient spectra were recorded in the deep UV and the mid-IR, covering the time window of the (un)folding transition from picoseconds to tens of microseconds. Thio-substitution of inward-pointing backbone carbonyls was found to strongly destabilize the β-hairpin structures,...

Data from: Putting vascular epiphytes on the traits map

Peter Hietz, Katrin Wagner, Flavio Nunes Ramos, Juliano Sarmento Cabral, Gerhard Zotz, Claudia Agudelo, Ana Maria Benavides, Manuel Cach Pérez, Catherine Cardelús, Nahelli Chilpa Galván, Lucas Costa, Rodolfo De Paula Oliveiras, Helena Einzmann, Rafael Farias, Valeria Guzmán Jacob, Michael Kessler, Catherine Kirby, Holger Kreft, Thorsten Krömer, Jamie Males, Samuel Monsalve Correa, Maria Moreno, Gunnar Petter, Casandra Reyes, Alfredo Saldaña … & Carrie Woods
Epiphyte trait data for the paper Hietz et al. 2021 Putting vascular epiphytes on the traits map. Journal of Ecology Plant functional traits impact the fitness and environmental niche of plants. Major plant functional types have been characterized by their trait spectrum, and the environmental and phylogenetic imprints on traits have advanced several ecological fields. Yet very few trait data on epiphytes, which represent almost 10% of vascular plants, are available. We collated >80,000 mostly...

Data from: European common frog (Rana temporaria) recolonised Switzerland from multiple glacial refugia in northern Italy via trans- and circum-Alpine routes

Alexandra Jansen Van Rensburg, Mathieu Robin, Barret Phillips & Josh Van Buskirk
The high mountain ranges of western Europe had a profound effect on the biotic recolonisation of Europe from glacial refugia. The Alps present a particularly interesting case because they form an absolute barrier to dispersal for most taxa, obstructing recolonisation from multiple refugia in northern Italy. Here we investigate the effect of the European Alps on the phylogeographic history of the European common frog Rana temporaria. Based on partial cytochrome b and COXI sequences from...

Data from: Genetic architecture constrains exploitation of siderophore cooperation in the bacterium Burkholderia cenocepacia.

Santosh Sathe, Anugraha Mathew, Kirsty Agnoli, Leo Eberl & Rolf Kümmerli
Abstract. Explaining how cooperation can persist in the presence of cheaters, exploiting the cooperative acts, is a challenge for evolutionary biology. Microbial systems have proved extremely useful to test evolutionary theory and identify mechanisms maintaining cooperation. One of the most widely studied system is the secretion and sharing of iron-scavenging siderophores by Pseudomonas bacteria, with many insights gained from this system now being considered as hallmarks of bacterial cooperation. Here, we introduce siderophore secretion by...

Data from: Global fern and lycophyte richness explained: how regional and local factors shape plot richness

Michael Kessler, Anna Weigand, Helge Bruelheide, Hanna Tuomisto, Holger Kreft & Patrick Weigelt
Aim To disentangle the influence of environmental factors at different spatial grains (regional and local) on fern and lycophyte species richness and ask how regional and plot-level richness are related to each other. Location Global. Time Period Present. Major Taxa studied Ferns and lycophytes. Methods We explored fern and lycophyte species richness at two spatial grains, regional (hexagonal grid cells of 7666 km2) and plot-level (300–500 m2), in relation to environmental data at regional and...

Data from: Diversity, dynamics and effects of long terminal repeat retrotransposons in the model grass Brachypodium distachyon

Anne C. Roulin, Christoph Stritt, Michele Wyler, Elena L. Gimmi & Martin Pippel
Transposable elements (TEs) are the main reason for the high plasticity of plant genomes, where they occur as communities of diverse evolutionary lineages. Because research has typically focused on single abundant families or summarized TEs at a coarse taxonomic level, our knowledge about how these lineages differ in their effects on genome evolution is still rudimentary. Here we investigate the community composition and dynamics of 32 long terminal repeat retrotransposon (LTR-RT) families in the 272...

Epidermal Growth Factor signaling promotes sleep through a combined series and parallel neural circuit

Jan Konietzka, Maximilian Fritz, Silvan Spiri, Rebecca McWhirter, Andreas Leha, Sierra Palumbos, Wagner Steuer Costa, Alexandra Oranth, Alexander Gottschalk, , Alex Hajnal & Henrik Bringmann
Sleep requires sleep-active neurons that depolarize to inhibit wake circuits. Sleep-active neurons are under the control of homeostatic mechanisms that determine sleep need. However, little is known about the molecular and circuit mechanisms that translate sleep need into the depolarization of sleep-active neurons. During many stages and conditions in C. elegans, sleep requires a sleep-active neuron called RIS. Here, we defined the transcriptome of RIS to discover that genes of the Epidermal Growth Factor Receptor...

Positive and negative interactions jointly determine the structure of Müllerian mimetic communities

Thomas G. Aubier & Marianne Elias
Negative and positive ecological interactions have opposite effects on the structure of ecological communities, in particular in terms of ecological similarity among interacting species. In nature, species belonging to the same guild often interact in both negative and positive ways, yet the interplay between interactions of different kinds in intraguild community dynamics remains poorly understood. Müllerian mimetic communities are particularly suited for investigating this interplay because positive (mutualistic mimicry) and negative (competition for trophic resource...

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  • University of Zurich
  • Swiss Federal Institute of Technology in Zurich
  • Swiss Federal Institute of Aquatic Science and Technology
  • University of Oxford
  • University of Bern
  • Uppsala University
  • University of Cambridge
  • University of Lausanne
  • University of Basel
  • University of Exeter