A5063782546- Insect symbiosis and bacterial influences
- Vector-borne infectious diseases
- Insect and Pesticide Research
- Mosquito-borne diseases and control
- Insect-Plant Interactions and Control
- Viral Infections and Vectors
- Insect behavior and control techniques
- French Urban and Social Studies
- Parasitic Diseases Research and Treatment
- Agriculture and Rural Development Research
- Aging, Elder Care, and Social Issues
- Evolution and Genetic Dynamics
- Parasite Biology and Host Interactions
- CRISPR and Genetic Engineering
- Phytoplasmas and Hemiptera pathogens
- Insect and Arachnid Ecology and Behavior
- Plant and animal studies
- Vector-Borne Animal Diseases
- Genomics and Phylogenetic Studies
- Listeria monocytogenes in Food Safety
- Zoonotic diseases and public health
- Infection Control in Healthcare
- Parasitic Infections and Diagnostics
- Yersinia bacterium, plague, ectoparasites research
- Plant Parasitism and Resistance
Institut de Recherche pour le Développement
2015-2025
Centre National de la Recherche Scientifique
2015-2025
Maladies Infectieuses et Vecteurs: Écologie, Génétique, Évolution et Contrôle
2016-2025
Université de Montpellier
2016-2025
Agropolis International
2014-2024
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2022-2024
Ecologie & Evolution
2020-2022
Centre National pour la Recherche Scientifique et Technique (CNRST)
2021
Institut des Sciences de l'Evolution de Montpellier
2008-2018
University College London
2007-2010
Inherited bacteria have come to be recognised as important components of arthropod biology. In addition mutualistic symbioses, a range other inherited are known act either reproductive parasites or secondary symbionts. Whilst the incidence α-proteobacterium Wolbachia is relatively well established, current knowledge much weaker. Here, we tested 136 species for demonstrate parasitism, sampling each more intensively than in past surveys. The inclusion increased number infections recorded our...
Q fever is a highly infectious disease with worldwide distribution. Its causative agent, the intracellular bacterium Coxiella burnetii, infects variety of vertebrate species, including humans. evolutionary origin remains almost entirely unknown and uncertainty persists regarding identity lifestyle its ancestors. A few tick species were recently found to harbor maternally-inherited Coxiella-like organisms engaged in symbiotic interactions, but their relationships pathogen remain unclear....
Abstract Ecological specialization to restricted diet niches is driven by obligate, and often maternally inherited, symbionts in many arthropod lineages. These heritable typically form evolutionarily stable associations with arthropods that can last for millions of years. Ticks were recently found harbour such an obligate symbiont, Coxiella ‐ LE , synthesizes B vitamins cofactors not obtained sufficient quantities from blood diet. In this study, the examination 81 tick species shows some...
The α-proteobacteria Wolbachia are among the most common intracellular bacteria and have recently emerged as important drivers of arthropod biology. commonly act reproductive parasites in arthropods by inducing cytoplasmic incompatibility (CI), a type conditional sterility between hosts harboring incompatible infections. In this study, we examined evolutionary histories infections, known wPip, house mosquito Culex pipiens, which exhibits greatest variation CI crossing patterns observed any...
Ticks are obligate blood feeders transmitting major pathogens worldwide. Over the past few years, considerable research efforts have focused on diversity, distribution and impact of gut intracellular bacterial symbionts tick development tick-borne pathogen transmission. The study this internal microbiome requires use a sterilization method to remove external (i.e. cuticular) microbes present tick's surface avoid any further contamination. Several methods exist, including ethanol- or...
In the mosquito Culex pipiens, insecticide resistance genes alter many life‐history traits and incur a fitness cost. Resistance to organophosphate insecticides involves two loci, with each locus coding for different mechanism of (degradation vs. insensitivity insecticides). The density intracellular Wolbachia bacteria has been found be higher in resistant mosquitoes, regardless involved. To discriminate between costs due from those associated elevated densities, we compared strains sharing...
In the mosquito Culex pipiens, insecticide resistance genes alter many life-history traits and incur a fitness cost. Resistance to organophosphate insecticides involves two loci, with each locus coding for different mechanism of (degradation vs. insensitivity insecticides). The density intracellular Wolbachia bacteria has been found be higher in resistant mosquitoes, regardless involved. To discriminate between costs due from those associated elevated densities, we compared strains sharing...
Abstract Inherited bacteria are now recognized as important players in arthropod evolution and ecology. Here, we test spiders, a group recently identified possessing inherited commonly, for the presence of two reproductive parasites, Cardinium hertigii (Bacteroidetes group) Wolbachia (α‐proteobacteria), estimating incidence, prevalence, any sex bias infection, infection diversity, panel field‐collected specimens. We identify spiders hotspot . Present 22% sampled species, incidence was...
Inherited symbionts are important drivers of arthropod evolutionary ecology, with microbes acting both as partners that contribute to host adaptation, and subtle parasites drive evolution. New symbioses most commonly formed through lateral transfer, where a microbial symbiont passes infectiously from one species another, then spreads its new population. However, the rate horizontal transfer has been regarded sufficiently low population coevolutionary processes can be approximated one,...
The use of the bacterium Wolbachia is an attractive alternative method to control vector populations. In mosquitoes, as in members Culex pipiens complex, induces a form embryonic lethality called cytoplasmic incompatibility, sperm-egg incompatibility occurring when infected males mate either with uninfected females or incompatible strain(s). Here we explore feasibility Incompatible Insect Technique (IIT), species-specific approach which field are sterilized by inundative releases males. We...
Current views about the impact of Wolbachia on Plasmodium infections are almost entirely based data regarding artificially transfected mosquitoes. This work has shown that reduces intensity in mosquitoes, raising exciting possibility using to control or limit spread malaria. Whether natural have same parasite-inhibiting properties is not yet clear. Wolbachia-mosquito combinations with a long evolutionary history are, however, key for understanding what may happen Wolbachia-transfected...
Abstract Endosymbiotic bacteria are important drivers of insect evolutionary ecology, acting both as partners that contribute to host adaptation and subtle parasites manipulate reproduction. Among them, the genus A rsenophonus is emerging one most widespread lineages. Its biology is, however, entirely unknown in cases, it therefore unclear how infections spread through populations. Here we examine incidence history aphid populations from 86 species, characterizing processes shape their...
The Nycteribiidae are obligate blood-sucking Diptera (Hippoboscoidea) flies that parasitize bats. Depending on species, these wingless exhibit either high specialism or generalism toward their hosts, which may in turn have important consequences terms of associated microbial community structure. Bats been hypothesized to be reservoirs numerous infectious agents, some recently emerged human populations. Thus, bat the epidemiology and transmission bat-borne diseases, acting directly as...
Bacterial endosymbionts are known as important players of the evolutionary ecology their hosts. However, distribution, prevalence and diversity still largely unexplored. To this aim, we investigated infections by most common bacterial reproductive manipulators in herbivorous spider mites South-Western Europe. Across 16 populations belonging to three Tetranychus species, Wolbachia was prevalent (ca. 61%), followed Cardinium (12%-15%), while only few individuals were infected Rickettsia...
Mutualistic interactions with microbes have facilitated the adaptation of major eukaryotic lineages to restricted diet niches. Hence, ticks their strictly blood-feeding lifestyle are associated intracellular bacterial symbionts through an essential B vitamin supplementation. In this study, examination diversity in 25 tick species genus Amblyomma showed that three bacteria, Coxiella-like endosymbionts (LE), Francisella-LE and Rickettsia, remarkably common. No other bacterium is as uniformly...
Many animals are dependent on microbial partners that provide essential nutrients lacking from their diet. Ticks, whose diet consists exclusively vertebrate blood, rely maternally inherited bacterial symbionts to supply B vitamins. While previously studied tick species consistently harbor a single lineage of those nutritional symbionts, we evidence here the invasive Hyalomma marginatum harbors unique dual-partner system between an ancestral symbiont, Francisella , and more recently acquired...
Abstract Tick-borne bacteria of the genera Ehrlichia and Anaplasma cause several emerging human infectious diseases worldwide. In this study, we conduct an extensive survey for infections in rainforests Amazon biome French Guiana. Through molecular genetics metagenomics reconstruction, observe a high indigenous biodiversity circulating among humans, wildlife, ticks inhabiting these ecosystems. Molecular typing identifies as highly endemic, with majority new strains putative species specific...
Abstract Populations of the marble trout ( Salmo marmoratus ) have declined critically due to introgression by brown trutta strains. In order define strategies for long‐term conservation, we examined genetic structure 8 known pure populations using 15 microsatellite loci. The analyses reveal extraordinarily strong differentiation among separated < km, and extremely low levels intrapopulation variability. As natural recolonization seems highly unlikely, appropriate management conservation...
Newly occurring adaptive genes, such as those providing insecticide resistance, display a fitness cost which is poorly understood. In order to detect subtle behavioural changes induced by the presence of resistance we used natural predators and compared their differential predation on susceptible resistant Culex pipiens mosquitoes, using strains with similar genetic background. Resistance genes were either coding an overproduced detoxifying esterase (locus Ester), or insensitive target...