A5029579538- Animal Ecology and Behavior Studies
- Viral Infections and Vectors
- Wildlife Ecology and Conservation
- Genetic diversity and population structure
- Vector-borne infectious diseases
- Yersinia bacterium, plague, ectoparasites research
- Bat Biology and Ecology Studies
- Zoonotic diseases and public health
- Reproductive biology and impacts on aquatic species
- Fire effects on ecosystems
- Mosquito-borne diseases and control
- Species Distribution and Climate Change
- Vector-Borne Animal Diseases
- Evolution and Genetic Dynamics
- Insect and Pesticide Research
- Genetic and phenotypic traits in livestock
- Sperm and Testicular Function
- Evolution and Paleontology Studies
- Ecology and Vegetation Dynamics Studies
- Fish Ecology and Management Studies
- Viral Infections and Outbreaks Research
- Aquaculture Nutrition and Growth
- Animal Disease Management and Epidemiology
- Insect symbiosis and bacterial influences
- Environmental DNA in Biodiversity Studies
Bipar
2015-2024
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2004-2024
École Nationale Vétérinaire d'Alfort
2015-2024
Agence Nationale de Sécurité Sanitaire de l’Alimentation, de l’Environnement et du Travail
2015-2022
University of South Bohemia in České Budějovice
2010-2021
Département Santé Animale
2018-2021
Orano (United States)
2021
Centre de Biologie et de Gestion des Populations
2010-2020
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
2008-2020
Institut de Recherche pour le Développement
2009-2020
The Quaternary cold periods in Europe are thought to have heavily influenced the amount and distribution of intraspecific genetic variation both animals plants. phylogeographies 10 taxa, including mammals ( Ursus arctos , Sorex spp., Crocidura suaveolens Arvicola spp.), amphibians Triturus arthropods Chorthippus parallelus ), plants Abies alba Picea abies Fagus sylvatica Quercus were analysed elucidate general trends across Europe. Only a small degree congruence was found amongst but likely...
Landscape genetics is a new discipline that aims to provide information on how landscape and environmental features influence population genetic structure. The first key step of the spatial detection location discontinuities between populations. However, efficient methods for achieving this task are lacking. In article, we clarify what conceptually involved in modeling data. Then describe Bayesian model implemented Markov chain Monte Carlo scheme allows inference such from individual...
Abstract Changes in agricultural practices and forest fragmentation can have a dramatic effect on landscape connectivity the dispersal of animals, potentially reducing gene flow within populations. In this study, we assessed influence woodland traditionally forest‐dwelling species — European roe deer fragmented landscape. From sample 648 spatially referenced study area 55 × 40 km, interindividual genetic distances were calculated from genotypes at 12 polymorphic microsatellite loci. We two...
Introduction Ticks are the most common arthropod vectors of both human and animal diseases in Europe, Ixodes ricinus tick species is able to transmit a large number bacteria, viruses parasites. may also be co-infected with several pathogens, subsequent high likelihood co-transmission humans or animals. However few data exist regarding co-infection prevalences, these studies only focus on certain well-known pathogens. In addition ticks carry symbionts that play important roles biology, could...
The delimitation of population units is primary importance in management and conservation biology. Moreover, when coupled with landscape data, the description genetic structure can provide valuable knowledge about permeability features, which often difficult to assess by direct methods (e.g. telemetry). In this study, we investigated structuring a roe deer recently recolonized fragmented landscape. We sampled 1148 individuals from 40 x 55-km area containing several putative barriers...
The effects of tropical forest fragmentation on frugivorous and nectarivorous bats were studied recent islands created by the flooding a dam in French Guiana. Study sites include isolated water, control plots nearby continuous forest. Studies began 1y before onset encompassed first 3y after flooding. Forest greatly modified diversity abundance bats. Changes occurred more rapidly smallest fragments than largest one, trends remarkably similar among all islands. Bat captures characterised...
This contribution reviews existing literature and some new own findings on teleost sperm motility factors controlling it, emphasizing selected marine species. In teleosts with external fertilization (halibut, turbot, sea bass, hake, cod tuna serving as examples), mainly the osmolality controls motility: movement is activated by transfer from seminal fluid into water, representing a large upward step in osmolality. The exception are flatfishes (such halibut or turbot) where CO2 responsible...
Rodents are recognized as hosts for at least 60 zoonotic diseases and may represent a serious threat human health. In the context of global environmental changes increasing mobility humans animals, contacts between pathogens potential animal vectors modified, amplifying risk disease emergence. An accurate identification each rodent specific level is needed in order to understand their implications transmission diseases. Among Muridae, Rattini tribe encompasses 167 species inhabiting South...
High-throughput sequencing technologies offer new perspectives for biomedical, agronomical and evolutionary research. Promising progresses now concern the application of these to large-scale studies genetic variation. Such require genotyping high numbers samples. This is theoretically possible using 454 pyrosequencing, which generates billions base pairs sequence data. However several challenges arise: first in attribution each read produced its original sample, second, bioinformatic...
The development of cheaper technical tools and the availability well established assay kits provide today spermatologists with several devices for objective quantifying assessment sperm quality. present paper reviews modern methods on concentration assessment, morphometry, motility processes through flagellum studies, by computer assisted analysis (CASA), integrity energetic state measurements.
Background Leptospirosis is the most common bacterial zoonoses and has been identified as an important emerging global public health problem in Southeast Asia. Rodents are reservoirs for human leptospirosis, but epidemiological data lacking. Methodology/Principal Findings We sampled rodents living different habitats from seven localities distributed across Asia (Thailand, Lao PDR Cambodia), between 2009 to 2010. Human isolates were also obtained close where sampled. The prevalence of...
Several recent public health crises have shown that the surveillance of zoonotic agents in wildlife is important to prevent pandemic risks. High-throughput sequencing (HTS) technologies are potentially useful for this surveillance, but rigorous experimental processes required use these effective tools such epidemiological contexts. In particular, HTS introduces biases into raw data set might lead incorrect interpretations. We describe here a procedure cleaning before estimating reliable...
Rodentia is the most diverse order among mammals, with more than 2,000 species currently described. Most of time, assignation so difficult based on morphological data solely that identifying rodents at specific level corresponds to a real challenge. In this study, we compared applicability 100 bp mini-barcodes from cytochrome b and c oxidase 1 genes enable rodent identification. Based GenBank sequence datasets 115 species, 136 fragment was selected as discriminatory mini-barcode, universal...
Ticks transmit pathogens of medical and veterinary importance are an increasing threat to human animal health. Assessing disease risk developing new control strategies requires identifying members the tick-borne microbiota as well their temporal dynamics interactions.Using high-throughput sequencing, we studied Ixodes ricinus its dynamics. 371 nymphs were monthly collected during three consecutive years in a peri-urban forest. After Poisson lognormal model was adjusted our data set,...
The impact of deforestation on the composition and dynamics bat communities received close attention during a 15-year survey bats French Guiana. Overall, lowers species richness: 48 75 from primary forest, mainly mature-forest phyllostomids, were not found in large areas that had been deforested for long time. 27 "rare" species, each represented by fewer than 6 8031 captures, apparently virtually eliminated areas. These altered habitats repopulated few opportunistic frugivorous phyllostomid...
Abstract We used mitochondrial cyt b sequences to investigate the phylogenetic relationships of Crocidura russula ( sensu lato ) populations across Strait Gibraltar, western Europe, Maghreb, and Mediterranean Atlantic islands. This revealed very low genetic divergence between European Moroccan populations. The application a molecular clock previously calibrated for shrews suggested that separation from lineages occurred less than 60 000 bp , which is at least 5 million years (Myr) after...
Abstract Gene flow in natural populations may be strongly influenced by landscape features. The integration of characteristics population genetic studies thus improve our understanding functioning. In this study, we investigated the structure and gene pattern for common vole, Microtus arvalis , a heterogeneous characterised strong spatial temporal variation. studied area is an intensive agricultural zone approximately 500 km 2 crossed motorway. We used individual‐based Bayesian methods to...
Abstract Aim To describe the phylogeographic patterns of black rat, Rattus rattus , from islands in western Indian Ocean where species has been introduced (Madagascar and neighbouring Réunion, Mayotte Grande Comore), comparison with postulated source area (India). Location Western Ocean: India, Arabian Peninsula, East Africa Madagascar, Comore Mayotte. Methods Mitochondrial DNA (cytochrome b tRNA D‐loop, 1762 bp) was sequenced for 71 individuals 11 countries Ocean. A partial D‐loop (419 also...
1. Species richness is a state variable of some interest in monitoring programmes but raw species counts are often biased due to imperfect detectability. Therefore, should quantify detectability for target taxa assess whether it varies over temporal or spatial scales. We assessed the potential tropical bat reliably estimate trends richness. 2. Using data from 25 assemblages Old and New World tropics, we estimated all an assemblage (mean proportion detected per sampling plot) individual...
In France as elsewhere in Europe the most prevalent TBD humans is Lyme borreliosis, caused by different bacterial species belonging to Borrelia burgdorferi sensu lato complex and transmitted important tick France, Ixodes ricinus. However, diagnosis of disease not always confirmed unexplained syndromes occurring after bites have become an issue. Recently, B. miyamotoi relapsing fever group same has been involved human Russia, USA Netherlands. present study, we investigate presence along with...