A5025134879- Parasite Biology and Host Interactions
- Insect symbiosis and bacterial influences
- Aquatic Invertebrate Ecology and Behavior
- Parasitic Infections and Diagnostics
- Evolution and Genetic Dynamics
- Parasites and Host Interactions
- Insect and Arachnid Ecology and Behavior
- Evolutionary Game Theory and Cooperation
- Insect Utilization and Effects
- Plant and animal studies
- Crustacean biology and ecology
- Animal Behavior and Reproduction
- Invertebrate Immune Response Mechanisms
- Insect and Pesticide Research
- Genetic diversity and population structure
- Insect-Plant Interactions and Control
- Myxozoan Parasites in Aquatic Species
- Helminth infection and control
- Marine Biology and Ecology Research
- Fish Ecology and Management Studies
- Legume Nitrogen Fixing Symbiosis
- Nematode management and characterization studies
- Environmental DNA in Biodiversity Studies
- Aquaculture Nutrition and Growth
- Marine and coastal plant biology
Biogéosciences
2016-2025
Centre National de la Recherche Scientifique
2015-2025
Université de Bourgogne
2016-2025
Université Bourgogne Franche-Comté
2017-2023
Écologie et Biologie des Interactions
2019
Laboratoire de Biométrie et Biologie Evolutive
2009
Université de Poitiers
1992-2002
Interactions involving several parasite species (multi-parasitized hosts) or host (multi-host parasites) are the rule in nature. Only a few studies have investigated these realistic, but complex, situations from an evolutionary perspective. Consequently, their impact on evolution of virulence and transmission remains poorly understood. The mechanisms by which multiple infections may influence include dynamics intrahost competition, mediation immune system increase genetic recombination....
Wolbachia are maternally inherited, intracellular, alpha proteobacteria that infect a wide range of arthropods. They cause three kinds reproductive alterations in their hosts: cytoplasmic incompatibility, parthenogenesis and feminization. There have been many studies the distribution arthropods, but very few crustacean species known to be infected. We investigated prevalence 85 from five orders. Twenty–two isopod were found carry these bacteria. The bacteria mainly terrestrial suggesting...
Traditional morphological diagnoses of taxonomic status remain widely used while an increasing number studies show that one morphospecies might hide cryptic diversity, i.e. lineages with unexpectedly high molecular divergence. This hidden diversity can reach even tens lineages, hyper diversity. Even well-studied model-organisms may exhibit overlooked Such is the case freshwater crustacean amphipod model taxon Gammarus fossarum. It extensively in both applied and basic types research,...
Although interest in Acanthocephala seems to have reached only a small community of researchers worldwide, we show this opinion article that group parasites is composed excellent model organisms for studying key questions parasite molecular biology and cytogenetics, evolutionary ecology, ecotoxicology. Their shared ancestry with free-living rotifers makes them an ideal explore the origins parasitic lifestyle drivers host shifts environmental transitions. They also provide useful features...
Vertical transmission (VT) and associated manipulation of host reproduction are widely reported among prokaryotic endosymbionts. Here, we present evidence for widespread use VT sex-ratio distortion in a eukaryotic phylum. The Microspora an unusual diverse group parasites that infect all animal phyla. Following our initial description microsporidian feminizes its crustacean host, survey the diversity distribution within Microspora. We find vertically transmitted microsporidia ubiquitous...
Abstract This article documents the addition of 220 microsatellite marker loci to Molecular Ecology Resources Database. Loci were developed for following species: Allanblackia floribunda, Amblyraja radiata, Bactrocera cucurbitae, Brachycaudus helichrysi, Calopogonium mucunoides, Dissodactylus primitivus, Elodea canadensis, Ephydatia fluviatilis, Galapaganus howdenae howdenae, Hoplostethus atlanticus, Ischnura elegans, Larimichthys polyactis, Opheodrys vernalis, Pelteobagrus fulvidraco,...
Many trophically transmitted parasites with complex life cycles manipulate their intermediate host behavior in ways facilitating transmission to final by predation. This facilitation generally results from lowering host's antipredatory defenses when the parasite is infective host. However, a recent theoretical model predicts that an optimal parasitic strategy would be protect predation noninfective, before switching stage reached. We tested this hypothesis fish acanthocephalan Pomphorhynchus...
The amphipod Dikerogammarus villosus has colonized most of the European main inland water bodies in less than 20 years, having deteriorating effect on local benthic communities. Our aim was to reveal species phylogeography native Black Sea area, define source populations for colonization routes continental Europe and newly established UK populations. We tested loss genetic diversity between invasive as well along invasion route. also isolation by distance. Thirty three were genotyped mtDNA...
Summary Freshwater amphipods G ammarus fossarum and pulex are widespread in Europe, with some evidence of cryptic diversity the former. We used DNA barcoding to assess genetic within among amphipod populations examined mate discrimination pre‐copulatory pair formation between genetically divergent individuals. Eight distinct . four molecular operational taxonomic units (MOTUs) were detected. Among 33 sampled, 11 contained a single MOTU , had two composed three sympatric s. Genetic...
Abstract Sex is determined by non‐Mendelian genetic elements overriding the sex factors carried heterochromosomes in some species of terrestrial isopods. A bacterium Wolbachia and a non‐bacterial feminizing factor (f) can both force chromosomal males Armadillidium vulgare to become phenotypic functional females. The f believed be element derived from genome that becomes inserted into host nuclear genome. considered selfish because they bias their host's ratio increase own transmission. New...
Abstract Female sex determination in the pill bug Armadillidium vulgare is frequently under control of feminizing parasitic factors (PSF). One these PSF an intracytoplasmic Wolbachia-like bacterium (F), while other (f) suspected being F-bacterial DNA sequence unstably integrated into host genome. In most wild populations harboring PSF, all individuals are genetic males (ZZ), and female phenotypes occur only due to presence which overrides male determinant carried by Z chromosome (females...
Agriculture faces the challenge of increasing food production while simultaneously reducing use inputs and delivering other ecosystem services. Ecological intensification agriculture is a paradigm shift, which has recently been proposed to meet such challenges through manipulation biotic interactions. While this approach opens up new possibilities, there are many constraints related complexity agroecosystems that make it difficult implement. Future advances, essential guide agricultural...
Competition between parasites within a host can influence the evolution of parasite virulence and resistance, but few studies examine effects unrelated with conflicting transmission strategies infecting same host. Vertically transmitted (VT) parasites, from mother to offspring, are in conflict virulent, horizontally (HT) because healthy hosts necessary maximize VT fitness. Resolution these should lead one two strategies: avoidance, or sabotage HT by parasite. We investigated co-infecting...
Non-indigenous species are increasingly recognized as altering local com- munities in newly colonized areas. In some north European freshwater systems, the Ponto-Caspian invasive crustacean Dikerogammarus villosus (Amphipoda) is im- plicated to have such an effect, with general monitoring of its progress and pact required. The present study contributes this monitoring. D. was ob- served 2003 all major French rivers prospected (i.e. Rhine, Meuse, Moselle, Sao ne, Rho Seine, Loire), a region...
Many trophically transmitted parasites manipulate their intermediate host phenotype, resulting in higher transmission to the final host. However, it is not known if manipulation a fixed adaptation of parasite or dynamic process upon which selection still acts. In particular, local has never been tested manipulating parasites. this study, using experimental infections between six populations acanthocephalan Pomphorhynchus laevis and its amphipod Gammarus pulex, we investigated whether...