34 Works

Maternal and fetal blood pharmacokinetics and organ distribution of atrazine, propazine, simazine and their metabolites in pregnant rats after chronic oral administration

Pascal Le Corre, Nolwenn Brandhonneur, Vincent Hutin, Cecile Chevrier & Sylvaine Cordier
Environmental contamination by chlorotriazines has been evidenced in mother-child cohort suggesting more detailed risk assessment of these compounds in drinking water. Exposure of rodents to atrazine has been associated to alterations of endocrine and reproductive functions by disrupting neuroendocrine control at hypothalamus level. Perinatal exposure to low doses of atrazine has been associated to reproductive dysfunction, and to behavioral abnormalities in adult exposed during embryogenesis. The objectives of the current investigation were to (1) evaluate...

Exploring the genetic consequences of clonality in haplodiplontic taxa

Stacy Krueger-Hadfield, Marie-Laure Guillemin, Christophe Destombe, Myriam Valero & Solenn Stoeckel
Partially clonality is an incredibly common reproductive mode found across all the major eukaryotic lineages. Yet, population genetic theory is based on exclusive sexuality or exclusive asexuality and partial clonality is often ignored. This is particularly true in haplodiplontic eukaryotes, including algae, ferns, mosses, and fungi, where somatic development occurs in both the haploid and diploid stages. Haplodiplontic life cycles are predicted to be correlated with asexuality, but tests of this prediction are rare. Moreover,...

Data from: Ecosystem multifunctionality is promoted by organic farming and hedgerows at the local scale but not at the landscape scale

Audrey Alignier, Couthouis Eloïse, Aviron Stéphanie & Julien Pétillon
This dataset gathers information used for the paper Couthouis et al. "Ecosystem multifunctionality is promoted by organic farming and hedgerows at the local scale but not at the landscape scale", part of the BIOMHE project (2019-2022) funded by the Fondation de France. It contains data about (i) species richness and abundances used for calculating ecological performance, (ii) crop yield used for calculating agronomic performance, (iii) labour and semi-net margin used for calculating socio-economic performance. Combined,...

Experimental 3D Velocity Field in Random Sphere Packing

Mathieu Souzy, Henri Lhuissier, Yves Méheust, Tanguy Le Borgne & Bloen Metzger

Local phylogenetic signal in Dutch habitats and other data from Prinzing et al New Phytologist 2021

Prinzing Andreas
The functioning of present ecosystems reflects deep evolutionary history of locally co-occurring species if their functional traits show high phylogenetic signal (PS). However, we do not understand what drives local PS. We hypothesize that local PS is high in undisturbed and stressful habitats – either due to ongoing local assembly of species that maintained ancestral traits, or past evolutionary maintenance of ancestral traits within habitat species-pools, or both. We quantified PS and diversity of 10...

Least‐cost path analysis for urban greenways planning: a test with moths and birds across two habitats and two cities

Manon Balbi, Solène Croci, Eric J. Petit, Alain Butet, Romain Georges, Luc Madec, Jean-Pierre Caudal & Aude Ernoult
1. One of the major planning tools to respond to urban landscape fragmentation is the development of ecological corridors, i.e. interconnected networks of urban green and blue spaces. Least-cost paths (LCP) appear to be an easy and appropriate resistance-based modeling method to respond to urban planners’ needs. However, the ecological validation of urban corridors using LCP is rarely performed and needs to be generalized to different species, habitats and cities. 2. We developed an experimental...

Survival and growth of Symphonia seedlings in a reciprocal transplantation experiment

Niklas Tysklind, Marie-Pierre Etienne, Ivan Scotti, Caroline Scotii-Saintagne, Alexandra Tinaut, Maxime Casalis, Valerie Troispoux, Saint Omer Cazal & Louise Brousseau
Trees are characterised by the large number of seeds they produce. Although most of those seeds will never germinate, plenty will. Of those which germinate, many die young, and eventually only a minute fraction will grow to adult stage and reproduce. Is this just a random process? Do variations in germination and survival at very young stages rely on variations in adaptations to microgeographic heterogeneity? and do these processes matter at all in determining tree...

Data from: Genetic structure and effective population sizes in European red deer (Cervus elaphus) at a continental scale: insights from microsatellite DNA

Frank E. Zachos, Alain C. Frantz, Ralph Kuehn, Sabine Bertouille, Marc Colyn, Magdalena Niedzialkowska, Javier Pérez-González, Anna Skog, Nikica Šprem & Marie-Christine Flamand
We analysed more than 600 red deer (Cervus elaphus) from large parts of its European distribution range at 13 microsatellite loci, presenting the first continent-wide study of this species using nuclear markers. Populations were clearly differentiated (overall FST = 0.166, Jost’s Dest = 0.385), and the BAPS clustering algorithm yielded mainly geographically limited and adjacent genetic units. When forced into only three genetic clusters our data set produced a very similar geographic pattern as previously...

Marquages Multiplex : Développements récents, avantages et limites en histopathologie

Julie Mary, Déborah Noble & Alain Fautrel
Les laboratoires d’anatomie et de cytologie pathologiques (ACP) utilisent diverses techniques conventionnelles comme l’histologie, l’immunohistochimie, la cytologie, la biologie moléculaire et les techniques de cytogénétique, nécessaires pour préciser le diagnostic de certains cancers. Nous nous intéressons ici aux avancées récentes en immunohistochimie (IHC) ou plus particulièrement au multiplexing. En effet cette technique de multiplexing s’est construite sur l’évolution des marquages immuno-histochimiques (IHC) mais également grâce à l’évolution des automates d’immunohistochimie ainsi que des scanners de...

Data from: Kin discrimination increases with odor distance in the German cockroach

Mathieu Lihoreau, Colette Rivault & Jelle S. Van Zweden
Kin recognition mediates altruistic behavior and inbreeding avoidance in many animal societies. So far, evidence for accurate kin recognition, when individuals distinguish fine scale differences in genetic relatedness, in social insects is mixed. Although this ability should be counter selected to reduce risks of nepotism in eusocial colonies, accurate kin recognition may be beneficial in less integrated societies where genetic conflicts are reduced. Here we show that gregarious cockroaches Blattella germanica discriminate multiple levels of...

Data from: Are generalist Aphidiinae (Hym. Braconidae) mostly cryptic species complexes?

Stéphane A. P. Derocles, Manuel Plantegenest, Jean-Yves Rasplus, Alexia Marie, Darren M. Evans, David H. Lunt & Anne Le Ralec
Aphidiinae are mostly composed of specialist parasitoids and the few species described as generalist are suspected to be composed of cryptic specialists, almost indistinguishable based on morphological characteristics. The use of molecular markers has proven to be a useful tool for revealing cryptic species complexes and here we use seven mitochondrial and nuclear gene fragments to study possible genetic differentiation among seven Aphidiinae generalists. Maximum likelihood (ML) trees and Bayesian Poisson tree processes (bPTP) models...

Acoustic data in four species of macaques

Nancy Rebout, Bernard Thierry, Alban Lemasson, Micheletta Jérôme & Roberto Cozzolino
We provide comparative data on vocal signals in adult females of four species of macaque : Tonkean macaques (Macaca tonkeana), crested macaques (M. nigra), Japanese macaques (M. fuscata), and rhesus macaques (M. mulatta). We distinguished three social contexts: agonistic, affiliative and neutral. The agonistic context included aggression (supplantation, lunge, chase, slap, grab, bite, facial threat display) and response to aggression (aggression, avoidance, flight, crouch, submissive facial displays). The affiliative context included affiliative behaviours (approach, sitting...

Exploration, analyse et gestion d’environnements archéologiques virtuels

Jean-Baptiste Barreau
La numérisation des sites et des objets archéologiques permet de mieux comprendre leur fonctionnement et de proposer des reconstitutions de leur état passé. Cette technologie permet de restituer un « environnement archéologique 3D » constitué, en plus des architectures statiques, de simulations physiques et d’êtres vivants. Lorsque celui-ci est simulé à l’aide de techniques interactives et immersives de réalité virtuelle, on parle alors d’un « environnement archéologique virtuel » ; les archéologues peuvent l’explorer, l’analyser...

AQMO_SV

François Bodin
The sensor values (AQMO_SV) encompass the following data fields: - PM10 value - PM2.5 value - PM1 value (optional) - Timestamp - Sensor identification - Localisation of the measurement (GPS coordinate) - Temperature in Celsius degrees (optional) - Percentage of humidity (optional) These data are collected by mobile sensors set up on bus bodies. The data acquisition is performed every 10 seconds. One high quality sensor will be installed for calibrating the mobile one. This...

Analyses on the fungus-farming termite, Macrotermes natalensis

Mark Harrison, Mireille Vassuer-Cognet, Sarah Seite, David Sillam-Dussès, Roland Lupoli, Alain Robert, Laure-Anne Poissonnier, Tom Van Dooren, Arnaud Lemainque, David Renault, Sebastien Acket, Muriel Andrieu, Jose Viscarra, Hei Sook Sul, Wilhelm De Beer & Erich Bornberg-Bauer
Kings and queens of eusocial termites can live for decades, while queens sustain a nearly maximal fertility. To investigate the molecular mechanisms underlying their long lifespan, we carried out transcriptomics, lipidomics and metabolomics in Macrotermes natalensis on sterile short-lived workers, long-lived kings and five stages spanning twenty years of adult queen maturation. Reproductives share gene expression differences from workers in agreement with a reduction of several aging-related processes, involving upregulation of DNA damage repair and...

SynPaFlex-Corpus

Damien Lolive & Aghilas Sini
This resource is an expressive French audiobooks corpus containing eighty seven hours of good audio quality speech, recorded by a single amateur speaker reading audiobooks of different literary genres. This corpus departs from existing corpora collected from audiobooks since they usually provide a few hours of mono-genre and multi-speaker speech. The motivation for setting up such a corpus is to explore expressiveness from different perspectives, such as discourse styles, prosody, and pronunciation, and using different...

Quantifying the effects of species traits on predation risk in nature: a comparative study of butterfly wing damage

Freerk Molleman, Juhan Javoiš, Robert Davis, Melissa Whitaker, Toomas Tammaru, Andreas Prinzing, Erki Õunap, Niklas Wahlberg, Ullasa Kodandaramaiah, Kwaku Aduse-Poku, Ants Kaasik & James Carey
1) Evading predators is a fundamental aspect of the ecology and evolution of all prey animals. In studying the influence of prey traits on predation risk, previous researchers have shown that crypsis reduces attack rates on resting prey, predation risk increases with increased prey activity, and rapid locomotion reduces attack rates and increases chances of surviving predator attacks. However, evidence for these conclusions is nearly always based on observations of selected species under artificial conditions....

Corrélation entre la survenue de fistule post-pancreaticoduodenectomie (DP) et la proportion de fibrose pancréatique quantifiée selon 3 techniques

Julija Todorovic, Manon Van Cauteren & Alain Fautrel
La fibre de collagène, produite par les fibroblastes, est la protéine la plus abondante du corps humain. Retrouvée dans la matrice extra-cellulaire (MEC), elle assure la cicatrisation des tissus en induisant parfois la formation de fibrose dont elle est le principal constituant. Son abondance et son implication dans divers phénomènes pathologiques font de cette protéine un sujet d’intérêt dans la prédiction de fistule post-pancréaticoduodénectomie (DP). Dans cette étude, nous présentons différentes techniques microscopiques permettant la...

Data from: Assessment of rival males through the use of multiple sensory cues in the fruitfly Drosophila pseudoobscura

Chris P. Maguire, Anne Lizé & Tom A. R. Price
Environments vary stochastically, and animals need to behave in ways that best fit the conditions in which they find themselves. The social environment is particularly variable, and responding appropriately to it can be vital for an animal’s success. However, cues of social environment are not always reliable, and animals may need to balance accuracy against the risk of failing to respond if local conditions or interfering signals prevent them detecting a cue. Recent work has...

Evolution of putative barrier loci at an intermediate stage of speciation with gene flow in campions (Silene)

Xiaodong Liu, Xiaodong Liu, Sylvain Glemin & Sophie Karrenberg
Understanding the origin of new species is a central goal in evolutionary biology. Diverging lineages often evolve highly heterogeneous patterns of genetic differentiation; however, the underlying mechanisms are not well understood. We investigated evolutionary processes governing genetic differentiation between the hybridizing campions Silene dioica (L.) Clairv. and S. latifolia Poiret. Demographic modeling indicated that the two species diverged with gene flow. The best-supported scenario with heterogeneity in both migration rate and effective population size suggested...

Third and fourth trophic level composition shift in an aphid-parasitoid-hyperparasitoid food web limits aphid control in an intercropping system

Emma Jeavons, Joan Van Baaren, Anne Le Ralec, Christelle Buchard, Franck Duval, Stéphanie Llopis, Estelle Postic & Cécile Le Lann
1. Understanding how resource diversification affects ecological interactions, food web structure and ecosystem functioning is essential in both fundamental and applied ecology. While plant diversification strategies (either in- or around-field) are often proposed in agricultural landscapes as practices to improve the biological control of herbivores by natural enemies, results remain variable and unsure. 2. Here, we studied the effect of an in-field diversification practice (the intercropping of leguminous crops within cereal fields, an increasingly common...

Separating innovation short-run and long-run technical efficiencies: Evidence from the Economic Community of West African States (ECOWAS)

Dorgyles C.M. Kouakou
A stream of literature has been developed on the measurement of the efficient production of innovation, that is, innovation technical efficiency. However, the efficiency measured is quite fuzzy as no distinction is made between innovation short-run and long-run efficiencies. Also, African economies have been heavily neglected, despite the need to explore ways to improve the poor levels of innovation they usually exhibit. In this paper, we measure innovation technical efficiency by separating short-run and long-run...

Preliminary results of a helium / tritium monitoring of a shallow crystalline rock aquifer in Brittany : influence of pumping for drinking water supply

Elodie Fourré, L. Aquilina, Anne-Catherine Pierson-Wickmann, Philippe Jean-Baptiste, D. Baumier, T. Labasque & V. Ayraud

Data from: Habitat specialization and climate affect arthropod fitness: a comparison of generalist vs. specialist spider species in Arctic and temperate biomes

Camille Ameline, Charlène Puzin, Joseph J. Bowden, Kevin Lambeets, Philippe Vernon & Julien Pétillon
Life history trade-offs are a key notion in evolutionary biology, notably for understanding how selection shapes the diversity of traits among species. Despite the frequent study of such trade-offs, few studies synchronously investigate the effects of multiple factors, such as niche specialization and adaptation to harsh environments. We compared reproduction (fecundity and egg quality) in two sympatric couples (one habitat generalist and one specialist) of congeneric wolf spider species, in both Arctic and temperate habitats....

Challenges and opportunities of species distribution modelling of terrestrial arthropod predators

Stefano Mammola, Julien Pétillon, Axel Hacala, Jeremy Monsimet, Sapho-Lou Marti, Pedro Cardoso & Denis Lafage
Aim. Species distribution models (SDMs) have emerged as essential tools in the equipment of many ecologists, useful to explore species distributions in space and time and answering an assortment of questions related to biogeography, climate change biology and conservation biology. Historically, most SDM research concentrated on well-known organisms, especially vertebrates. In recent years, these tools are becoming increasingly important for predicting the distribution of understudied invertebrate taxa. Here, we reviewed the literature published on main...

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