A5015670303- Fish Ecology and Management Studies
- Marine and fisheries research
- Fish Biology and Ecology Studies
- Reproductive biology and impacts on aquatic species
- Aquaculture Nutrition and Growth
- Fish biology, ecology, and behavior
- Avian ecology and behavior
- Animal Behavior and Reproduction
- Aquatic Invertebrate Ecology and Behavior
- Hydraulic flow and structures
- Ecology and biodiversity studies
- Esophageal and GI Pathology
- Wildlife Ecology and Conservation
- Gastrointestinal disorders and treatments
- Genetic and phenotypic traits in livestock
- Ichthyology and Marine Biology
- Clinical Nutrition and Gastroenterology
- Biliary and Gastrointestinal Fistulas
- Food Industry and Aquatic Biology
- Freshwater macroinvertebrate diversity and ecology
- Foreign Body Medical Cases
- Soil and Water Nutrient Dynamics
- Turtle Biology and Conservation
- Congenital gastrointestinal and neural anomalies
- Marine Ecology and Invasive Species
Nutrition Metabolism Aquaculture
2015-2024
Ecosystèmes, Biodiversité, Evolution
2013-2024
Ecologie Comportementale et Biologie des Populations de Poissons
2014-2024
Université de Pau et des Pays de l'Adour
2004-2023
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2020-2023
Institut Agro Rennes-Angers
2019-2023
Association pour l'Utilisation du Rein Artificiel dans la région Lyonnaise
2022
L'Institut Agro
2022
Institut National de la Recherche Agronomique
2005-2009
Hôpital Purpan
1984-1997
Efficiencies of two types bypass, a surface and bottom sluice, were tested for the natural downstream migration silver eels Anguilla anguilla at small hydroelectric power plant Halsou, on River Nive in France. Naturally migrating caught after their passage through either bypass. A total 637 trapped during three-year study. Total efficiency both bypasses, evaluated basis movement radiotagged eels, ranged from 56% to 64%. Given bias due hydrological conditions time runs, precise each separate...
Abstract – Human‐induced habitat alteration is one of the main causes decline freshwater fish populations. The watershed River Bidasoa (Spain) an example heavily fragmented habitat. local brown trout ( Salmo trutta L.) population disturbed, with evidence poor recruitment as well low adult densities in stem. Forty male and female migratory were tagged external or internal radio transmitters released. Fixed stations data loggers mobile antennae used daily surveys to track movements during...
Abstract Environmental sex determination (ESD) has been detected in a range of vertebrate reptile and fish species. Eels are characterized by an ESD that occurs relatively late, since cannot be histologically determined before individuals reach 28 cm. Because several eel species at risk extinction, assessing the earliest stage is crucial management issue. Based on preliminary results RNA sequencing, we targeted genes susceptible to differentially expressed between ovaries testis different...
Abstract – The efficiency of a Passive Integrated Transponder (PIT)‐tag detection system was tested during 23‐day experiment using permanent digital video to record the passage fish through multiplexed antennas. Coupling PIT allowed error sources and correction erroneous data. its variation were investigated according swimming speed, direction movement individual behaviour. Influence time environmental conditions on results also checked. tag 96.7% efficient in detecting fish. Upstream...
Abstract Salmonid females invest heavily in reproduction, through gamete production, habitat selection and maternal care. Habitat care are expected to provide shelter for eggs against scouring predators. However, also tend produce variable egg sizes, this trait may interact with quality influence the survival of offspring. In study, we aimed at evaluating role female on conditional individual size body size. We monitored reproductive activity two natural rivers 3 years, order relate nest...
Ecologists have long been interested in relevant techniques to track the field movement patterns of fish. The elemental composition otoliths represents a permanent record growing habitats experienced by fish throughout its lifetime and is increasingly used literature. lack predictive mechanistic understanding individual kinematics underlying ion incorporation/depletion limits our fine-scale temporal interpretation chemical signal recorded otolith. In particular, rate at which elements are...
At the onset of sexual maturation, European eels Anguilla anguilla exhibit high locomotor activity which may correspond to migratory restlessness. We measured captive and determined whether it correlated with downstream runs silver as well changes in environmental factors. Groups at different stages silvering process (yellow stage) were tagged placed separate tanks supplied either river or tap water. Activity was by means a flat-board antenna vertically middle tank surface Wild migrating...
Abstract Electrofishing in streams of low water conductivity has technical limitations leading to the widespread use poison fishing. In theory, provided a high enough voltage gradient can be created water, electrofishing should possible all but lowest conductivities (<10 µS/cm). Using custom‐made equipment delivering up 1,500 V DC, tests were carried out French Guiana on 27 with as 16 µS/cm. Approximately 5,800 fish 93 species captured, an mortality rate 1.83%. Poison treatments used...
We combined habitat mapping, radio tracking of adults, redd and genetic parentage analysis on juveniles for 2 consecutive years to test eight predictions the reproductive payoffs individual features associated with space use tactics anadromous Atlantic salmon (Salmo salar) in a natural population. Regarding payoffs, we found that (1) males settled better habitat, visited more redds, tended get mates than poorer habitat; (2) they also sired offspring; (3) latter effect was stronger first...
Abstract Animals of many species lay their eggs in nests built to provide offspring a suitable microhabitat during critical phase development. Nest characteristics result from two processes: habitat choice and modification that may impact differently nest suitability for eggs. This field-based study aimed estimate independent effects interaction on the capacity sea lamprey retain Physical variables linked both affected suitability, but higher effect sizes indicated prevalence modification....
Abstract Nest building relates to reproductive effort, sexual selection, intersexual conflict and cooperation may be linked individual phenotype interindividual interactions. In particular, larger individuals having more energy reserves are expected build more, nests, without trade intrasexual competition for cooperative nest building. Capture–mark–recapture survey of sea lamprey ( Petromyzon marinus L. 1758) were combined assess the relationship between nesting activity on a spawning...
The habitat heterogeneity hypothesis states that increased promotes species diversity through availability of ecological niches. We aimed at describing the local-scale (i.e. nest and adjacent substrate) effects nests sea lamprey (Petromyzon marinus L.) as ecosystem engineer on macroinvertebrate assemblages. hypothesized streambed physical caused by spawning would modify invertebrate assemblages specific biologic traits promote reach-scale diversity. sampled thirty Nive River, a river south...
L’objectif de cette étude est déterminer la meilleure technique d’implantation chirurgicale intra-abdominale radioémetteurs chez truite commune (Salmo trutta). Deux types d’anesthésie, chimique au clou girofle et par l’électricité sont comparés. d’émetteurs, à antenne filaire externe interne enroulée deux emplacements l’incision paroi abdominale, en avant arrière ceinture pelvienne, testés.
Atlantic Salmon (Salmo salar) is an anadromous migratory species adapted to cool temperatures. It protected by the Bern convention and European Habitats Directive. has been listed as vulnerable French IUCN Red List. decline result of combined cumulated, mainly anthropic, causes: climate change, increasingly high number impoundments, degradation water quality habitat over-exploitation fisheries. Monitoring this carried out on three rivers in France (Southern part distribution area) produce...
A bstract During the reproductive season, animals have to manage both their energetic budget and gamete stock. In particular, for semelparous capital breeders with determinate fecundity no parental care other than gametic investment, depletion of stock must match stock, so that individuals get exhausted just after last egg is laid fertilized. Although these budgets are managed continuously, monitoring dynamics mating acts energy expenditure at a fine temporal scale in wild challenging. This...