56 Works

Contribution de la paléogénétique à l’archéologie

Eva-Maria Geigl
La paléogénétique, c’est-à-dire l’analyse génétique de l’ADN préservé dans les vestiges biologiques du passé, principalement os et dents, a ouvert de nouvelles perspectives en archéologie. Cette alliée de poids apporte des informations qui ne sont pas accessibles par d’autres approches et contribue à une meilleure compréhension des sites archéologiques et des sociétés du passé, concernant entre autres migrations et métissages, domestication des animaux et des plantes, effets de l’action humaine sur les populations animales et...

Supplementary 1: Underwater photogrammetry for close-range 3D imaging of dry-sensitive objects: The case study of cephalopod beaks

Marjorie Roscian, Anthony Herrel, Raphaël Cornette, Arnaud Delapré, Yves Cherel & Isabelle Rouget
Technical advances in 3D imaging have contributed to quantifying and understanding biological variability and complexity. However, small, dry-sensitive objects are not easy to reconstruct using common and easily available techniques such as photogrammetry, surface scanning, or micro-CT scanning. Here we use cephalopod beaks as an example as their size, thickness, transparency, and dry-sensitive nature make them particularly challenging. We developed a new, underwater, photogrammetry protocol in order to add these types of biological structures to...

Mechanisms of glass crystallization analyzed by electron backscatter diffraction (EBSD)

Wolfgang Wisniewski & Mathieu Allix

Behavior, sensory reception and genomics in a vector insect

Marcelo Gustavo Lorenzo & Claudio R. Lazzari

Diversity of biosynthetic gene clusters in gut bacteria of turtle ants

Christophe Duplais
In insect-microbe nutritional symbioses the gut symbionts supplement the host diet with nutrients by producing amino acids and vitamins or by degrading lignin or polysaccharides macromolecules. In multipartite mutualisms composed of multiple symbionts from different taxonomical orders, it has been suggested that beside the genes involved in the nutritional symbiosis the symbionts maintain genes responsible for the production of metabolites putatively playing a role in the maintenance and interaction of the bacterial communities living in...

Portal for OMEGA C_channel_After_Filtering

John Carter

Potentiel bioarchéologique des micro-fossiles non-polliniques en archéologie préventive

Delphine Barbier‐Pain, Yannick Miras, Hélène Silhouette, Dominique Frère & Bastien Dubuis
Au travers de deux cas d’étude issus de l’archéologie préventive, cet article a pour objectif d’évaluer le potentiel bioarchéologique des micro-fossiles non-polliniques (MNP). Ils correspondent à des formes de résistance et de dissémination issus des cinq règnes du vivant. Associés à l’analyse des grains de pollen et des spores de végétaux, les premiers résultats obtenus sur les sites de Villeneuve-sur-Lot et de Lavau démontrent leur intérêt tant les informations qu’ils peuvent apporter sont nombreuses sur...

Data from: Larval dispersal and fishing pressure influence recruitment in a coral reef fishery

Richard J. Hamilton, Diego Lozano-Cortés, Michael Bode, Glenn Almany, Hugo B. Harrison, John Pita, Pablo Saenz-Agudelo, Colin Gereniu, Nate Peterson, Howard Choat, Peter A. Waldie & Michael L. Berumen
Understanding larval connectivity patterns in exploited fishes is a fundamental prerequisite for developing effective management strategies and assessing the vulnerability of a fishery to recruitment overfishing and localised extinction. To date however, researchers have not considered how regional variations in fishing pressure also influence recruitment. We used genetic parentage analyses and modelling to infer the dispersal patterns of bumphead parrotfish (Bolbometopon muricatum) larvae in the Kia fishing grounds, Isabel Province, Solomon Islands. We then extrapolated...

Rapid divergent evolution of an annual plant across a latitudinal gradient revealed by seed resurrection

Pierre-Olivier Cheptou
Global change is expected to drive short-term evolution of natural populations. However, it remains unclear whether different populations are changing in unison. Here, we study contemporary evolution of growth-related and reproductive traits of three populations of Cyanus segetum face to warming and pollinator decline across a latitudinal gradient in France. We resurrected stored seeds sampled up to 24 years apart from northern, central-western, and southern populations and conducted an in situ common-garden experiment. To disentangle...

IASI Atmospheric Temperature Profiles (ATP) from IASI/Metop-B

Marie Bouillon
The IASI atmospheric temperature profiles product (IASI ATP) is a daily 1°x1° global dataset of atmospheric temperatures derived from all IASI radiance observations. The temperatures profiles are given on 11 static pressure levels from 750 to 2 hPa. The method used to retrieve atmospheric temperatures from IASI radiances is detailed in Bouillon et al., 2021 (to be submitted very soon). It relies on an Artificial Neural Network (ANN) trained with 450 000 observations (IASI observations...

Data from: The stochastic dynamics of early epidemics: probability of establishment, initial growth rate, and infection cluster size at first detection

Peter Czuppon, Emmanuel Schertzer, François Blanquart & Florence Débarre
Emerging epidemics and local infection clusters are initially prone to stochastic effects that can substantially impact the epidemic trajectory. While numerous studies are devoted to the deterministic regime of an established epidemic, mathematical descriptions of the initial phase of epidemic growth are comparatively rarer. Here, we review existing mathematical results on the epidemic size over time, and derive new results to elucidate the early dynamics of an infection cluster started by a single infected individual....

JSON Implementation of Time-Frequency Radio Catalogues: TFCat

Baptiste Cecconi, Mark Taylor, Xavier Bonnin & Alan Loh
TFCat (Time-Frequency Catalogue) is a data interchange format based on JSON. It defines several types of JSON objects and the manner in which they are combined to represent data about time-frequency features of a time spectrogram (a.k.a. dynamic spectrum), their properties, and their temporal and spectral extents.

Expérimentation pour un observatoire régional de la vulnérabilité aux risques côtiers en Bretagne. Projets OSIRISC et OSIRISC+

Manuelle Philippe, Alain Hénaff, Thibaud Lami, Iwan Le Berre, Catherine MEUR-FEREC, Nicolas Le Dantec, Pauline Letortu, Elisabeth Guillou, Mathias ROUAN & Laurence DAVID

Cassini/RPWS/HFR Electrical Antenna Calibration. Saturn Inbound Update

Baptiste Cecconi, Philippe Zarka, William Kurth & Donald A Gurnett
This document describes the Cassini/RPWS/HFR Electrical Antenna Calibration update after the Saturn Inbound trajectory measurements.

African elephants can detect water from natural and artificial sources via olfactory cues

Matthew Wood, Simon Chamaillé-Jammes, Almuth Hammerbacher & Adrian Shrader
Water is vital for mammals. Yet, as ephemeral sources can be difficult to find, it raises the question, how do mammals locate water? Elephants (Loxodonta africana) are water-dependent herbivores that possess exceptional olfactory capabilities, and it has been suggested that they may locate water via smell. However, there is no evidence to support this claim. To explore this, we performed two olfactory choice experiments with semi-tame elephants. In the first, we tested whether elephants could...

Moorea Biocode

Neil Davies
The core goal of the Moorea Biocode Project (MBP) is to genetically barcode every non-microbial species on Moorea. We will thus create a professionally produced, verifiable (vouchered) All Taxa Biotic Inventory (ATBI) of Moorea (Output 1), together with the informatics services needed for ATBI and biocode-enabled research in Model Ecosystems (Outcome 2). We will also design a long-term plan (business model) to ensure the financial self-sustainability of biocode services, and carry out proof of concept...

The impact of IFNγ signaling in the pulmonary damage during Plasmodium bergheiANKAinfection

Norinne Lacerda-Queiroz, Mélanie Meda, Florence Savigny, Nicolas Riteau & Valérie Quesniaux

Cyclosporin A: a repurposable drug in the treatment of COVID-19 ?

Christian Devaux

Data from: Impact of male trait exaggeration on sex-biased gene expression and genome architecture in a water strider

Abderrahman Khila, William Toubiana, David Armisen, Corentin Dechaud & Roberto Arbore
Background: Exaggerated secondary sexual traits are widespread in nature and often evolve under strong directional sexual selection. Although heavily studied from both theoretical and empirical viewpoints, we have little understanding of how sexual selection influences sex-biased gene regulation during the development of exaggerated secondary sexual phenotypes, and how these changes are reflected in genomic architecture. This is primarily due to the limited availability of representative genomes and associated tissue- and sex-transcriptomes to study the development...

Planetary Surface Portal

François Poulet

IASI-FT spectrally resolved Outgoing Longwave Radiation (from IASI/Metop-A)

simon whitburn
The IASI spectrally resolved Outgoing Longwave Radiation product (IASI OLR) is a monthly (L3), 2 x 2 degree global dataset of spectral OLR derived from the clear-sky IASI satellite radiance measurements in the range 645-2300 cm-1 at the 0.25 cm-1 native spectral sampling of the L1C spectra. The algorithm for the conversion of the spectra to the OLR is detailed in Whitburn et al. (2020, Journal of Climate). It relies on precalculated angular distribution models...

Solar Portal

Eric Buchlin

Assessing the effects of artificial light at night on biodiversity across latitude – Current knowledge gaps

Jean Secondi, Aurélie Davranche, Marc Théry, Nathalie Mondy & Thierry Lengagne
Aim: Exposure to artificial light at night (ALAN) is a risk factor for organisms. Considering the spread and increasing intensity of night brightness across the globe, and the key role of light at all biological levels, alterations of ecosystems are expected. Yet, we cannot predict the severity of the effects of ALAN in several biomes because little information is available outside the temperate zone. We reviewed current knowledge and identified traits that could be targeted...

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...

Species ecology explains the various spatial components of genetic diversity in tropical reef fishes

Giulia Francesca Azzurra Donati, Niklaus Zemp, Stéphanie Manel, Maude Poirier, Thomas Claverie, Franck Ferraton, Théo Gaboriau, Rodney Govinden, Oskar Hagen, Shameel Ibrahim, David Mouillot, Julien Leblond, Pagu Julius, Laure Velez, Irthisham Zareer, Adam Ziyad, Fabien Leprieur, Camille Albouy & Loïc Pellissier
Generating genomic data for 19 tropical reef fish species of the Western Indian Ocean, we investigate how species ecology influences genetic diver- sity patterns from local to regional scales. We distinguish between the α, β and γ components of genetic diversity, which we subsequently link to six ecological traits. We find that the α and γ components of genetic diversity are strongly correlated so that species with a high total regional genetic diversity display systematically...

Registration Year

  • 2021

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  • French National Centre for Scientific Research
  • University of Paris-Saclay
  • Laboratory of Space Studies and Instrumentation in Astrophysics
  • University of Orléans
  • Paris Observatory
  • Sorbonne University
  • Versailles Saint-Quentin-en-Yvelines University
  • Laboratoire d’Astrophysique de Marseille
  • PSL Research University
  • University of Lyon System