9 results on '"Bégout, Marie-Laure"'
Search Results
2. An acoustic telemetry study of seabream (Sparus aurata L.): first results on activity rhythm, effects of environmental variables and space utilization
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Bégout, Marie-Laure, Lagardère, Jean-Paul, Dumont, H. J., editor, and Balvay, Gérard, editor
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- 1995
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3. Exposure to microplastic: ingestion/egestion rates and behavioural impact on Solea solea
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Vignet, Caroline, Bégout, Marie-Laure, Cachot, Jérôme, Cousin, Xavier, Tirefort, Claire, J. Baztan, M. Bergmann, A. Carrasco, C. Fossi, B. Jorgensen, A. Miguelez, S. Pahl, R. C. Thompson, J.-P. Vanderlinden, Laboratoire Ressources Halieutiques (LRH), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Université de Bordeaux (UB), Biochimie et Toxicologie des Substances Bioactives (BTSB), Institut national universitaire Champollion [Albi] (INUC), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC), Observatoire aquitain des sciences de l'univers (OASU), Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Cabildo de Lanzarote, UVSQ, Plymouth University, AWI, Cornell University, and Università di Siena and Marine Sciences For Society
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ish ,microplastics ,[SDV.TOX.ECO] Life Sciences [q-bio]/Toxicology/Ecotoxicology ,[SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology ,solea solea ,behaviour - Abstract
International audience; Microplastic (MP) occurrence is ubiquitous in fresh and marine waters and species living inEstuary are particularly exposed to this kind of pollution. In this context, the Seine River isinteresting for investigating the impacts of MP on fish, because of intense and numerous humanactivities through its watershed. The goal of this study is to evaluate the fate and impact of MPingestion using experimental exposure of the common sole, Solea solea, a representative species ofthe Seine Estuary. Larvae of fish (from 7 days post hatch (dph) to 42 dph) were exposed during 2hours to MP particles before (7 dph), during (21 and 22 dph) and after metamorphosis (41 and 42dph). Three types of industrial MP were chosen with different properties (middle size floating (27-35μg mL-1, DC: 50 ng mL-1). Post-exposurem, d=0.99), middle size sinking (27-32μg mL-1, DC: 50 ng mL-1). Post-exposurem, d=1.20) and large size sinking (63- 75μg mL-1, DC: 50 ng mL-1). Post-exposurem, d=1.20).In addition, at the last stage, fish were also exposed to natural plastic particles collected in the SeineRiver and ground into a fraction with a size less than 100 μg mL-1, DC: 50 ng mL-1). Post-exposurem (PVC, PE, PET, PS and PP testedseparately). After exposure, fish which had ingested MP were counted (Figure 1) and isolated tomonitor egestion. Solea solea ingested all types of plastics in variable (1 to more than 100)quantities and egested them on average less than 24 hours after exposure at all stages. A behaviouralchallenge, was performed on MP contaminated larvae. Behavioral responses of fish did not seem tobe affected by MP exposures before metamorphosis compared to controls but distance moveddecreased during metamorphosis for fish that had ingested MP particles. This could be explained bythe fact that before metamorphosis fish can still use yolk energy reserve and are thus less affected byMP than later on when external feeding becomes mandatory.
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- 2018
4. Long term effects of an early and continuous exposure to PAHs on zebrafish behavioral responses
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Vignet, Caroline, Guionnet, Thiphaine, Le Menach, Karyn, Lyphout, Laura, Leguay, Didier, Budzinski, Hélène, Bégout, Marie-Laure, Cousin, Xavier, Laboratoire d'Ecotoxicologie - Place Gaby Coll BP7, Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Université Sciences et Technologies - Bordeaux 1, Environnements et Paléoenvironnements OCéaniques (EPOC), Observatoire aquitain des sciences de l'univers (OASU), Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Écotoxicologie, Laboratoire Ressources Halieutiques, Place Gaby Coll , BP 7, Laboratoire de Physiologie et Génomique des Poissons (LPGP), Institut National de la Recherche Agronomique (INRA)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), and Society of Environmental Toxicology and Chemistry (SETAC). BEL.
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reproduction ,[SDV.TOX]Life Sciences [q-bio]/Toxicology ,pah ,zebrafish ,contaminant ,behaviour - Published
- 2013
5. Changes in Brain Monoamines Underlie Behavioural Disruptions after Zebrafish Diet Exposure to Polycyclic Aromatic Hydrocarbons Environmental Mixtures.
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Vignet, Caroline, Trenkel, Verena M., Vouillarmet, Annick, Bricca, Giampiero, Bégout, Marie-Laure, and Cousin, Xavier
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ZEBRA danio ,POLYCYCLIC aromatic hydrocarbons ,MONOAMINE transporters ,NORADRENALINE ,FISH food ,PHYSIOLOGY - Abstract
Zebrafish were exposed through diet to two environmentally relevant polycyclic aromatic hydrocarbons (PAHs) mixtures of contrasted compositions, one of pyrolytic (PY) origin and one from light crude oil (LO). Monoamine concentrations were quantified in the brains of the fish after six month of exposure. A significant decrease in noradrenaline (NA) was observed in fish exposed to both mixtures, while a decrease in serotonin (5HT) and dopamine (DA) was observed only in LO-exposed fish. A decrease in metabolites of 5HT and DA was observed in fish exposed to both mixtures. Several behavioural disruptions were observed that depended on mixtures, and parallels were made with changes in monoamine concentrations. Indeed, we observed an increase in anxiety in fish exposed to both mixtures, which could be related to the decrease in 5HT and/or NA, while disruptions of daily activity rhythms were observed in LO fish, which could be related to the decrease in DA. Taken together, these results showed that (i) chronic exposures to PAHs mixtures disrupted brain monoamine contents, which could underlie behavioural disruptions, and that (ii) the biological responses depended on mixture compositions. [ABSTRACT FROM AUTHOR]
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- 2017
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6. Evaluation of self-feeders as a tool to study diet preferences in groups of Atlantic cod (Gadus morhua).
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Millot, Sandie, Nilsson, Jonatan, Fosseidengen, Jan Erik, Bégout, Marie-Laure, and Kristiansen, Tore
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ATLANTIC cod ,FISH feeds ,FOOD preferences ,FISH weight ,WATER temperature ,FISH populations - Abstract
Among other applications, self-feeding has been used to study food preferences in fish allowing them to choose between feeders with different food content. Preference tests assume that (i) trigger actuations are motivated by appetite, (ii) fish can learn which feeder contains which food and discriminate between feeders solely on the basis of their content, and (iii) in groups of fish, the triggering preferences is representative for the individuals of the group. We studied individual triggering behaviour in four groups of 14 Atlantic cod (length of 34 ± 2 cm, weight of 424 ± 102 g, mean ± SE, water temperature comprised between 7–8 °C) that were first given the choice between two self-feeders with identical content (Period 1 of 14 days) and subsequently with one feeder full and the other empty (Period 2 of 14 days) . In all four groups, one or two individuals performed the majority of the actuations, and in three groups the high triggering fish was a female high-ranked for size and growth rate. Cod displayed a preference for one of the two feeders despite their identical content. When the preferred feeder was emptied, the preference switched after one to eight days but both feeders were still actuated throughout the experiment. In conclusion, the assumption that actuation frequency reflects food preference and is representative for the individuals of the group may not be true, at least for Atlantic cod. If aiming at determining preferences representative for the whole population multiple representative fish should be kept isolated in separate tanks, with self-feeders containing each food option, on each tank. [ABSTRACT FROM AUTHOR]
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- 2012
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7. First links between self-feeding behaviour and personality traits in European seabass, Dicentrarchus labrax.
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Ferrari, Sébastien, Benhaïm, David, Colchen, Tatiana, Chatain, Béatrice, and Bégout, Marie-Laure
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EUROPEAN seabass , *DICENTRARCHUS , *ANIMAL nutrition , *ANIMAL immobilization , *SOCIAL structure , *BALISTIDAE - Abstract
Most studies carried out with seabass under self-feeding conditions report an intriguing social structure that is built around the device and the food dispenser with three coexisting triggering categories: high-triggering (HT), low-triggering (LT) and zero-triggering (ZT) fish. However, neither sex nor feeding motivation or hierarchy can explain the establishment of this specialization. We characterized the personality of seabass with the commonly used restraint and open field tests and assessed the link between personality traits and individual triggering activity towards the self-feeder apparatus. We found no differences between triggering categories during the restraint test but high triggering fish were characterized as shyer than low- and zero-triggering fish during the open field test. Triggering activity was negatively correlated with exploratory capacities and boldness. This experiment provides for the first time evidence that high triggering status in seabass is correlated with personality traits, which could partly explain the social structure that builds around a self-feeder device. [ABSTRACT FROM AUTHOR]
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- 2014
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8. Acoustic signals produced by Nile tilapia Oreochromis niloticus and black-chinned tilapia Sarotherodon melanotheron during intra- and interspecific pairings.
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Akian, Dieudonné Djétouan, Yao, Kouakou, Parmentier, Eric, Joassard, Lucette, Clota, Frédéric, Baroiller, Jean-François, Lozano, Paul, Chatain, Béatrice, and Bégout, Marie-Laure
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NILE tilapia , *NEST building , *TILAPIA , *ANIMAL aggression , *DRUM playing - Abstract
• Drum and rolling sounds have been characterized for the first time in black-chinned tilapia Sarotherodon melanotheron. • Rolling sounds produced in courtship differ from drum sounds in aggressive context hampering interspecies communication. • O. niloticus and S. melanotheron produce sounds in interspecific context both in aggressive and non-aggressive situations. • Sounds and behaviours are not correlated to sex steroid levels in these two tilapias. We characterised, for the first-time, the sound production of black-chinned tilapia Sarotherodon melanotheron and show differences with that of Nile tilapia Oreochromis niloticus in a hybridization pairing context. Although both species were able to produce drum sounds, they showed different acoustic features. Drum sounds were produced in aggressive (chasing or lateral attack) and non-aggressive (courtship) contexts by O. niloticus but only in aggressive situations (fleeing or avoidance) by S. melanotheron. The second type of sounds produced by O. niloticus were grunts, produced in both aggressive (chasing and after biting) and non-aggressive contexts (nest building). The second type of sound produced by S. melanotheron was a rolling sound, produced only during courtship. Each species was able to produce common sounds (drum) and species-specific sounds (grunts and rolling). This implies that species can communicate without being able to understand each other because the sounds emitted may probably have different significance. Drumming corresponded only to aggressivity in S. melanotheron , whereas this was not true for O. niloticus. 11-ketotestosterone (11-kt) levels were significantly higher in male O. niloticus than male S. melanotheron , but there was no significant correlation between 11-kt or estradiol concentrations and the number of sounds produced in aggressive or non-aggressive behavioural contexts in either species. During interspecies interactions, O. niloticus drum sounds are likely considered to be aggressive by S. melanotheron and could potentially constitute a reproductive barrier between the two species. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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9. Spatial distribution and activity patterns as welfare indicators in response to water quality changes in European sea bass, Dicentrarchus labrax.
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Alfonso, Sébastien, Sadoul, Bastien, Cousin, Xavier, and Bégout, Marie-Laure
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EUROPEAN seabass , *WATER quality , *WATER quality management , *SOCIAL cohesion , *STANDARDIZED tests , *TRANQUILIZING drugs - Abstract
• Groups of fish were exposed to acute stressors (Hypoxia, Hyperoxia, High ammonia). • Behavior was recorded both during stress condition and following stress. • All stress conditions induce a decrease in activity, thigmotaxis and group cohesion. • Novel tank diving test was validated for welfare assessment in European sea bass. • Activity, thigmotaxis and group cohesion are sensitive welfare indicators. In aquaculture, fish are exposed to unavoidable stressors that can be detrimental for their health and welfare. However, welfare in farmed fish can be difficult to assess, and, so far, no standardized test has been universally accepted as a welfare indicator. This work contributes to the establishment of behavioural welfare indicators in a marine teleost in response to different water quality acute stressors. Groups of ten fish were exposed to high Total Ammonia Nitrogen concentration (High TAN, 18 mg.L-1), Hyperoxia (200 % O 2 saturation), Hypoxia (20 % O 2 saturation), or control water quality (100% O 2 saturation and TAN < 2.5 mg.L-1) over 1 hour. Fish were then transferred in a novel environment for a group behaviour test under the same water quality conditions over 2 hours. Videos were recorded to assess thigmotaxis, activity and group cohesion. After this challenge, plasma cortisol concentration was measured in a subsample, while individual behavioural response was measured in the other fish using novel tank diving test. Prior to this study, the novel tank diving test was validated as a behavioural challenge indicative of anxiety state, by using nicotine as anxiolytic drug. Overall, all stress conditions induced a decrease in activity and thigmotaxis and changes in group cohesion while only fish exposed to Hypoxia and High TAN conditions displayed elevated plasma cortisol concentrations. In post -stress condition, activity was still affected but normal behaviour was recovered within the 25 minutes of the test duration. Our work suggests that the activity, thigmotaxis and group cohesion are good behavioural indicators of exposure to degraded water quality, and could be used as standardized measures to assess fish welfare. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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