58 Works

Dataset associated with 'Scaling of the Dzyaloshinskii-Moriya interaction with magnetization in Pt/Co(Fe)B/Ir multilayers'

Khulaif Alshammari, Eloi Haltz, Mohammed Alyami, Mannan Ali, Paul Keatley, Christopher Marrows, Joseph Barker & Thomas Moore
Magnetic multilayers with perpendicular anisotropy and an interfacial Dzyaloshinskii-Moriya interaction contain chiral domain walls and skyrmions that are promising for applications. Here we measure the temperature dependence of the Dzyaloshinskii-Moriya interaction (DMI) in Pt/CoFeB/Ir and Pt/CoB/Ir multilayers by means of static domain imaging. First, the temperature dependences of saturation magnetization ($M_{\rm{S}}$), exchange stiffness ($A$) and intrinsic perpendicular anisotropy ($K_{\rm{u}}$) are determined. Then the demagnetized domain pattern in each multilayer is imaged by wide-field Kerr microscopy...

Male song stability shows cross-year repeatability but does not affect reproductive success in a wild passerine bird

Alexander Hutfluss, Eira Bermúdez-Cuamatzin, Alexia Mouchet, Mark Briffa, Hans Slabbekoorn & Niels Dingemanse
Predictable behaviour (or “behavioural stability”) might be favoured in certain ecological contexts, e.g. when representing a quality signal. Costs associated with producing stable phenotypes imply selection should favour plasticity in stability when beneficial. Repeatable among-individual differences in degree of stability are simultaneously expected if individuals differ in ability to pay these costs, or in how they resolve cost-benefit trade-offs. Bird song represents a prime example, where stability may be costly yet beneficial when stable singing...

Tree phenology - observer intercalibration and individual tree phenological scoring

Nicolas Delpierre, Isabelle Chuine & Eleanor Cole
We report data documenting (1) the dynamics of budburst and leaf senescence in three European natural forest tree populations over the period od 2012-2015 and (2) the variability among phenological observers as documented from seven observer inter-calibration experiments conducted in France over 2007-2017 for both the budburst and leaf senescence period.

Multigene phylogenetics of euglenids based on single-cell transcriptomics of diverse phagotrophs

Gordon Lax, Martin Kolisko, Yana Eglit, Won Je Lee, Naoji Yubuki, Anna Karnkowska, Leander Brian, Gertraud Burger, Patrick Keeling & Alastair Simpson
Euglenids are a well-known group of single-celled eukaryotes, with phototrophic, osmotrophic and phagotrophic members. Phagotrophs represent most of the phylogenetic diversity of euglenids, and gave rise to the phototrophs and osmotrophs, but their evolutionary relationships are poorly understood. Symbiontids, in contrast, are anaerobes that are alternatively inferred to be derived euglenids, or a separate euglenozoan group. Most phylogenetic studies of euglenids have examined the SSU rDNA gene only, which is often highly divergent. Also, many...

Data from: Decreased brain connectivity in smoking contrasts with increased connectivity in drinking

Wei Cheng, Edmund T. Rolls, Trevor W. Robbins, Weikang Gong, Zhaowen Liu, Wujun Lv, Jingnan Du, Hongkai Wen, Liang Ma, Erin Burke Quinlan, Hugh Garavan, Eric Artiges, Dimitri Papadopoulos Orfanos, Michael N. Smolka, Gunter Schumann, Keith Kendrick & Jianfeng Feng
In a group of 831 participants from the general population in the Human Connectome Project, smokers exhibited low overall functional connectivity, and more specifically of the lateral orbitofrontal cortex which is associated with non-reward mechanisms, the adjacent inferior frontal gyrus, and the precuneus. Participants who drank a high amount had overall increases in resting state functional connectivity, and specific increases in reward-related systems including the medial orbitofrontal cortex and the cingulate cortex. Increased impulsivity was...

From Micro to Macro Gender Differences: Evidence from Field Tournaments (LIEPP Working Paper, n°124)

José de Sousa & Guillaume Hollard
Women are under-represented in top positions, such as Business, Politics and Science. The same under-representation occurs in chess, providing us with a unique opportunity to analyze this phenomenon. We find a macro gender gap in every country: there are fewer female than male players, especially at the top, and women have lower average rankings. One contribution of this paper is to link the macro gender gap to micro gender differences. Comparing millions of individual games,...

Solar Portal

Eric Buchlin

Planetary Surface Portal

François Poulet

La participation des outre-mer français aux organisations internationales régionales

Daniel Dormoy
Dans le cadre des potentialités ouvertes par le droit interne et le droit international, y compris le droit européen, et parfois au-delà de ce cadre, les outremer français correspondant à douze territoires non souverains, répartis dans trois grandes régions géographiques (océan Pacifique, Atlantique et Antilles, océan Indien et Antarctique), sont dans une situation très variable au regard de leur participation aux organisations internationales régionales. Certains ne participent à aucune organisation, d’autres ont simplement un statut...

Data for Interannual variability in the source location of North African dust transported to the Amazon

Cassandra Gaston, A Pourmand, J Longman, A Sharifi, Joseph Prospero, K Panechou, N Bakker, N Drake, D Guioiseau & Anne Barkley
Here, we present the data and MixSIAR code that corresponds to the manuscript “Interannual variability in the source location of North African dust transported to the Amazon.” African dust is seasonally transported to the western Tropical Atlantic Ocean (TAO) and South America (SA), including the Amazon Basin. Leading hypotheses suggest that either the Western North African potential source area (PSA) or the Central North African PSA (e.g., Bodélé Depression) is the main source of dust...

Data from: Co-occurrence among three divergent plant-castrating fungi in the same silene host species

Jessica L. Abbate, Pierre Gladieux, Michael E. Hood, Damien M. De Vienne, Janis Antonovics, Alodie Snirc & Tatiana Giraud
The competitive exclusion principle postulates that different species can only coexist in sympatry if they occupy distinct ecological niches. The goal of this study was to understand the geographical distribution of three species of Microbotryum anther-smut fungi that are distantly related but infect the same host plants, the sister species Silene vulgaris and S. uniflora, in western Europe. We used microsatellite markers to investigate pathogen distribution in relation to host specialization and ecological factors. Microbotryum...

Dataset associated with 'The effect of mutation on an aggregation-prone protein: An in vivo, in vitro and in silico analysis'

N. Gutherz, R. Van der Kant, H. Smit, M. Martinez, Yong Xu, Chi Trinh, Bogdan I. Iorga, F. Rousseau, J. Schymkowitz, David Brockwell & Sheena Radford
Aggregation of initially stably structured proteins is involved in more than 20 human amyloid diseases. Despite intense research, however, how this class of proteins assembles into amyloid fibrils remains poorly understood. We address this question using β2-microglobulin (β2m) as a model system, focusing on D76N-β2m that is involved in hereditary amyloidosis. Here, we identify the residues key to protect β2m from aggregation and we show that residue 76 has a unique ability to drive β2m...

De novo genome assembly of Leptodactylus fuscus

Lu Yang, Peter Andolfatto, Andrew Crawford, Santiago Herrera-Álvarez, Maríadel Pilar Rodríguez-Ordoñez, Julie Peng, Shabnam Mohammadi, Jay Storz, Arbel Harpak & Susanne Dobler
This presents a de novo genome assembly of Leptodactylus fuscus. High molecular weight DNA was extracted from a L. fuscus embryo which had been preserved in ethanol upon collection in Garzón, Huila, Colombia. The library was prepared and sequenced with 10X Genomics Chromium. Linked reads were processed by Long Ranger basic v2.2.2 and assembled with Supernova v2.1.1. The assembled genome is 2.42 Gb with 16,530 scaffolds >=10 kb, and scaffold N50 = 363 kb. The...

Antibacterial and anatomical defences in an oil contaminated, vulnerable seaduck

Karsten Laursen, Anders Pape Møller, Jorge Izaguirre & Alfonso Marzal
Oil-spills have killed thousands of birds during the last 100 years, but non-lethal effects of oil-spills on birds remain poorly studied. We measured phenotype characters in 279 eiders Somateria mollissima of which 13.6% were oiled. We tested the hypotheses that (1) the morphology of eiders does not change due to oil contamination; (2) the anatomy of organs reflects the physiological reaction to contamination e.g. increase in metabolic demand, increase in food intake and counteracting toxic...

Floral preferences of mountain bumble bees are constrained by functional traits but flexible through elevation and season

Douglas Sponsler, Katharina Kallnik, Fabrice Requier, Alice Classen, Anne Maihoff, Johanna Sieger & Ingolf Steffan-Dewenter
Patterns of resource use by animals can clarify how ecological communities have assembled in the past, how they currently function, and how they are likely to respond to future perturbations. Bumble bees (Hymentoptera: Bombus spp.) and their floral hosts provide a diverse yet tractable system in which to explore resource selection in the context of plant-pollinator networks. Under conditions of resource limitation, the ability of bumble bees species to coexist should depend on dietary niche...

Neurofilament light chain (NfL) as a biomarker of hereditary transthyretin-mediated amyloidosis

Paul Nioi, Simina Ticau, Gautham V. Sridharan, Shira Tsour, William L. Cantley, Amy Chan, Jason A. Gilbert, David Erbe, Emre Aldinc, Mary M. Reilly, David Adams, Michael Polydefkis, Kevin Fitzgerald & Akshay Vaishnaw
To identify changes in the proteome associated with onset and progression of ATTRv amyloidosis, we performed an observational, case-controlled study which compared proteomes of patients with ATTRv amyloidosis and healthy controls. Plasma levels of >1,000 proteins were measured in patients with ATTRv amyloidosis with polyneuropathy who received either placebo or patisiran in the APOLLO study and in healthy controls. The impact of patisiran on the time profile of each protein was determined by linear mixed...

Data from: Concerted evolution reveals co-adapted amino acid substitutions in Na+K+ ATPase of frogs that prey on toxic toads

Shabnam Mohammadi, Lu Yang, Arbel Harpak, Santiago Herrera-Álvarez, María Del Pilar Rodríguez-Ordoñez, Julie Peng, Karen Zhang, Jay Storz, Susanne Dobler, Andrew Crawford & Peter Andolfatto
Gene duplication is an important source of evolutionary innovation, but the functional distinction between duplicates can be opposed by ongoing gene conversion between them. Here we document a tandem duplication of Na+,K+-ATPase subunit α1 (ATP1A1) sharedby frogs in the genus Leptodactylus,a group of species that feeds on toxic toads. One ATP1A1 paralog evolved resistance to toad toxins while the other paralog retained ancestral susceptibility. Frequent non-allelic gene conversion homogenized most of the paralog sequences,yet the...

Cape fur seal vocal repertoire - acoustic parameters

Mathilde Martin, Tess Gridley, Simon Elwen & Isabelle Charrier
Communication is primordial for survival of animal species as signals are involved in many social interactions (mate selection, parental care, and collective behaviours). The acoustic channel is the primary modality used by birds and mammals to reliably exchange information among individuals. In group-living species, the propagation of vocal signals is limited due to the density of individuals and the background noise. Vocal exchanges are therefore challenging. This study is the first investigation into the acoustic...

Fine phonetic details for DM disambiguation in French: a corpus-based investigation

Yaru Wu, Mathilde Hutin, Ioana Vasilescu, Lori Lamel, Martine Adda-Decker & Liesbeth Degand
In this study we examine phonetic variation of discourse markers in French, using for this purpose the 4-hour richly annotated LOCAS-F corpus. Both linguistic factors and stylistic variables are considered: speech style, part-of-speech category, mean phone duration and vowel formant distributions with respect to the word status. The results show that the use of discourse markers increases with the degree of spontaneity of the speech. Coordinating conjunctions are the part-of-speech which is most frequently used...

Portal for OMEGA C_channel_After_Filtering

John Carter

Exploring the effects of trifluoromethyl group in the design of organocatalysts, enzyme inhibitors and in the conformational control of saturated nitrogen-containing heterocycles

Volodymyr Sukach, Sergii Melnykov, Sylvain Bertho & Pascal Retailleau

Data from: First evidence for allotriploid hybrids between Juniperus thurifera and J. sabina in a sympatric area in the French Alps

Perla Farhat, Najat Takvorian, Maria Avramidou, Luc Garraud, Robert P. Adams, Sonja Siljak-Yakovlev, Magda Bou Dagher Kharrat & Thierry Robert
At Saint Crépin location (French Alps), where sympatry between the tetraploid Juniperus thurifera and the diploid Juniperus sabina occurs, three individuals with an atypical morphology, have been observed. AFLP markers were used to unravel hybridization and potential introgression events in this population. In total, 147 polymorphic loci remained after the process of peak selection. This dataset demonstrates hybrids originated from a cross between J. sabina and J. thurifera and suggests that back-cross at least to...

Data from: Exceptional preservation requires fast biodegradation: thylacocephalan specimens from La Voulte‐sur‐Rhône (Callovian, Jurassic, France)

Clément Jauvion, Sylvain Bernard, Pierre Gueriau, Cristian Mocuta, Sylvain Pont, Karim Benzerara & Sylvain Charbonnier
Konservat-Lagerstätten are seen as snapshots of past biodiversity for a given location and time. Yet, processes leading to the exceptional morphological preservation of fossils in these deposits remain incompletely understood. This results in the deficient assessment of taphonomic biases and limits the robustness/relevance of palaeobiological reconstructions. Here, we report the mineralogical characterization of crustacean fossils preserved within carbonate-rich concretions from the Jurassic Konservat-Lagerstätte of La Voulte-sur-Rhône (Ardèche, France). The combination of SEM-EDS, TEM, synchrotron-based XRF,...

Predation risk in relation to brain size in alternative prey of pygmy owls varies depending on the abundance of main prey

Anders Møller, Kari Hongisto & Erkki Korpimäki
Large brains in prey may allow adoption of anti-predator behavior that facilitates escape. Prey species with relatively large brains have been shown to be less likely to fall prey to predators. This leads to the hypothesis that individuals that have been captured by predators on average should have smaller brains than sympatric individuals. We exploited the fact that Eurasian pygmy owls Glaucidium passerinum hoard small mammals and birds in cavities and nest-boxes for over-winter survival,...

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  • University of Paris-Saclay
  • French National Centre for Scientific Research
  • University of Liège
  • Universität Hamburg
  • Columbia University
  • Princeton University
  • University of Lausanne
  • University of Chicago
  • University of Exeter
  • Wellcome Sanger Institute