A5037557449- Fish Ecology and Management Studies
- Isotope Analysis in Ecology
- Marine and fisheries research
- Aquatic Ecosystems and Phytoplankton Dynamics
- Microbial Community Ecology and Physiology
- Fish Biology and Ecology Studies
- Aquatic Invertebrate Ecology and Behavior
- Soil and Water Nutrient Dynamics
- Freshwater macroinvertebrate diversity and ecology
- Marine and coastal ecosystems
- Wastewater Treatment and Nitrogen Removal
- Hydrology and Sediment Transport Processes
- Genetic diversity and population structure
- Diatoms and Algae Research
- Marine Bivalve and Aquaculture Studies
- Marine Biology and Ecology Research
- Wildlife Ecology and Conservation
- Hydrology and Watershed Management Studies
- Fish biology, ecology, and behavior
- Physiological and biochemical adaptations
- Coral and Marine Ecosystems Studies
- Algal biology and biofuel production
- Marine Biology and Environmental Chemistry
- Coastal and Marine Management
- Water Treatment and Disinfection
Université de Toulouse
2015-2025
Centre National de la Recherche Scientifique
2016-2025
Université Toulouse III - Paul Sabatier
2014-2025
Institut de Recherche pour le Développement
2024-2025
Centre de Recherche sur la Biodiversité et l'Environnement
2024
Laboratoire Écologie Fonctionnelle et Environnement
2014-2023
Institut National Polytechnique de Toulouse
2007-2023
Laboratoire Evolution et Diversite Biologique
2015-2022
Justus-Liebig-Universität Gießen
2016
Ecolab (France)
2014-2015
Summary 1. Epilithic biofilm biomass was measured for 14 months in two sites, located up‐ and downstream of the city Toulouse Garonne River (south‐west France). Periodical sampling provided a data set to compare with simulations from model Uehlinger, Bürher Reichert (1996: Freshwater Biology , 36 249–263.), order evaluate impact hydraulic disturbance. 2. Despite differences application conditions (e.g. river size, discharge, frequency disturbance), base equation satisfactorily predicted...
Abstract Freshwater fish ecology has greatly benefited from the use of innovative tools such as stable isotope analysis to determine ecological effects non‐native fishes. Stable analyses are based on predictable relationship between composition a consumer and its prey, have become increasingly popular amongst aquatic ecologists. In parallel, they been implemented sensitive, cost‐effective temporally integrative tool analyse trophic interactions native species, detect some subtle human...
The behavioral strategies developed by predators to capture and kill their prey are fascinating, notably for that forage at, or beyond, the boundaries of ecosystem. We report here occurrence a beaching behavior used an alien large-bodied freshwater predatory fish (Silurus glanis) birds on land (i.e. pigeons, Columbia livia). Among total 45 behaviors observed filmed, 28% were successful in bird capture. Stable isotope analyses (δ13C δ15N) putative revealed highly variable dietary contribution...
Multiple anthropogenic pressures including the widespread introductions of non‐native species threaten biodiversity and ecosystem functioning notably by modifying trophic structure communities. Here, we provided a global evaluation impacts on isotopic (δ 13 C δ 15 N) freshwater fish We gathered stable isotope values (n = 4030) in 496 communities lentic (lakes, backwaters, reservoirs) lotic (running waters such as streams, rivers) ecosystems throughout world quantified Overall, found that...
In this study, the results of conventional stomach‐content analysis are compared with recent DNA metabarcoding approach on faeces to identify fish species consumed by non‐native European catfish Silurus glanis in Garonne River (south‐western France), a special emphasis anadromous prey. Fourteen prey were identified stomach contents or faeces, including four species. Despite higher intestine than emptiness, more through faecal (11 14) (five suggesting that is an efficient, non‐intrusive...
The Atlantic salmon (Salmo salar) is one of the world's most emblematic freshwater fish. Despite conservation and rehabilitation plans, populations this species are dramatically declining due to human impacts such as habitat fragmentation, overfishing water pollution. Owing their large body size, anadromous adults were historically invulnerable fish predation during spawning period migration. This invulnerability has disappeared in Western Europe with introduction a new predator, European...
Summary Teleost fishes interact with diverse microbial communities, playing crucial functions for host fitness. While gut microbiome has been extensively studied, skin overlooked. Specifically, there is no assessment of the relative impact and environmental factors on variability as well neutral processes shaping fish microbiome. Here, we assessed a Siluriforme, European catfish ( Silurus glanis ) sampled in four sites located Southwestern France. We roles individual features (body size...
Abstract Sea lamprey ( Petromyzon marinus ) is a unique jawless vertebrate among the most primitive of all living vertebrates. This migratory fish endangered in much its native area due to dams, overfishing, pollution, and habitat loss. An introduced predator, European catfish Silurus glanis ), now widespread Western Southern freshwaters, adding new threat for sea migrating into freshwater spawn. Here, we use prototype predation tag coupled with RFID telemetry on 49 individuals from one...
ABSTRACT Recreational anglers use ground baiting to attract fish and increase catch inputs organic matter that can have important effects on water quality by increasing eutrophication. However, nutrient from angling bait recreational fisheries not yet been estimated. We quantified baits in small lakes supporting specialized carp, put‐and‐take, roach with a 2‐year field survey of activity in‐person angler questionnaires. Angling was highly variable among averaged 82 (±74 SD)...
Detecting signatures of life in sedimentary rocks lies the difficulty distinguishing them from abiotic signals and interpreting their formational conditions, particularly when working on planetary systems that are different Earth, such as Mars (Corenblit et al., 2023). Research this field is booming, thanks to development deployment detection tools either orbit or surface. great interest due its early history comparable Earth during Noachian period > 3.7 Ga (Lapôtre, 2022). In...
Habitat stability is an important driver of ecological community composition and development. River epilithic biofilms are particularly unstable habitats for the establishment benthic communities because they regularly disturbed by floods. Our aim was to determine influence habitat instability on meiobenthic organisms. We hypothesized that hydrologic variables most predictors meiofauna distribution. monitored (meiofauna microalgae) with a high sampling frequency during 2 periods contrasting...
The ubiquity and fascinating nature of animal aggregations are widely recognised. We report here consistent previously undocumented occurences a giant alien freshwater fish, the Wels catfish (Silurus glanis). Aggregative groups were on average composed 25 (± 10 SD, ranging from 15 to 44) adults with estimated total biomass 651 kg (386 - 1132) density 23 m(-2) (14 40). Aggregations always occurred within same location. No foraging, reproductive or anti-predator behaviour observed during...
Abstract Despite significant progress in recent years, understanding the rules governing assembly of natural communities is still challenging and knowledge how integration nonnative species may disrupt community structure function needed. To address this challenge, we collated stable isotope data for 159 freshwater fish around world with without quantified spatial variation both isotopic functional diversity intraspecific niches. Using a null model partial least squares path analysis, then...
Abstract The European catfish Silurus glanis is the largest freshwater fish (excluding anadromous species) in Europe. Its measurements raise many concerns about its potential impact on recipient ecosystems and communities also feed rumors fantasies. It largely accepted that individual ever caught was 5 m long weighed 306 kg. This information has been reported scientific literature for at least a century now numerous specialized Web sites. In this manuscript, we test hypothesis such huge...
Abstract Terrestrial subsidies are important for freshwater ecosystems and, in lakes supporting recreational fisheries, angling baits can represent an allochthonous input. This resource directly contribute to fish diet but its consumption may be influenced by body size and the type of used different fisheries. In this study, we evaluated two common cyprinid species, Cyprinus carpio Rutilus rutilus, three fishery types (specialised carp, specialised roach, put‐and‐take fisheries). We stable...
Summary The European catfish, Silurus glanis , was widely introduced in western Europe, and it has now established self‐sustaining populations numerous large rivers of France. Using data collected from surveys conducted by the French National Agency for Water Aquatic Environment (Onema) 1989 to 2010 more than 500 sites throughout country (10636 electrofishing surveys), we investigated potential impact catfish on fish communities rivers. In first part analysis, compared trends observed before...
Abstract High environmental microplastic pollution, and its largely unquantified impacts on organisms, are driving studies to assess their potential entry pathways into freshwaters. Recreational angling, where many anglers release manufactured baits freshwater ecosystems, is a widespread activity with important socio-economic implications in Europe. It also represents pathway freshwaters that has yet be quantified. Correspondingly, we analysed three different categories of...