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| Registros recuperados: 69 | |
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| Benzekri, Hicham; Armesto, Paula; Cousin, Xavier; Rovira, Mireia; Crespo, Diego; Alejandro Merlo, Manuel; Mazurais, David; Bautista, Rocio; Guerrero-fernandez, Dario; Fernandez-pozo, Noe; Ponce, Marian; Infante, Carlos; Zambonino, Jose Luis; Nidelet, Sabine; Gut, Marta; Rebordinos, Laureana; Planas, Josep V.; Begout, Marie-laure; Gonzalo Claros, M.; Manchado, Manuel. |
| Background Senegalese sole (Solea senegalensis) and common sole (S. solea) are two economically and evolutionary important flatfish species both in fisheries and aquaculture. Although some genomic resources and tools were recently described in these species, further sequencing efforts are required to establish a complete transcriptome, and to identify new molecular markers. Moreover, the comparative analysis of transcriptomes will be useful to understand flatfish evolution. Results A comprehensive characterization of the transcriptome for each species was carried out using a large set of Illumina data (more than 1,800 millions reads for each sole species) and 454 reads (more than 5 millions reads only in S. senegalensis), providing coverages ranging from... |
| Tipo: Text |
Palavras-chave: Soles; Transcriptome; Microarray; Orthology; Molecular markers; SoleaDB. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00238/34918/33626.pdf |
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| Vignet, Caroline; Le Menach, Karyn; Lyphout, Laura; Guionnet, Tiphaine; Frere, Laura; Leguay, Didier; Budzinski, Helene; Cousin, Xavier; Begout, Marie-laure. |
| In the last 10 years, behavior assessment has been developed as an indicator of neurotoxicity and an integrated indicator of physiological disruption. Polycyclic aromatic hydrocarbon (PAH) release into the environment has increased in recent decades resulting in high concentrations of these compounds in the sediment of contaminated areas. We evaluated the behavioral consequences of long-term chronic exposure to PAHs, by exposing zebrafish to diets spiked with three PAH fractions at environmentally relevant concentrations. Fish were exposed to these chemicals from their first meal (5 days postfertilization) until they became reproducing adults (at 6 months old). The fractions used were representative of PAHs of pyrolytic (PY) origin and of two oils... |
| Tipo: Text |
Palavras-chave: Danio rerio; Polycyclic aromatic hydrocarbon; Heavy oil; Light crude oil; Anxiety-like behavior; Photomotor responses; Maze; Novel tank. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00188/29910/28380.pdf |
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| Acolas, M; Veron, V; Jourdan, H; Begout, Marie-laure; Sabatie, M; Bagliniere, J.l.. |
| The characteristics and activity of adult allis shad [Alosa alosa (L.)] were analysed during the last part of their upstream migration in the L'Aulne, a small river in Brittany, and during reproduction on a unique spawning ground downstream of an insurmountable dam. The age of the spawners ranged front three to seven years, females being larger and older than males. Population-level migration and reproduction were studied by counting the number of migrating fish, by estimating the sex ratio, and by counting the number of nocturnal spawning acts for three consecutive years starting in 2000. The influence of the environment, especially water temperature and discharge, was highlighted: temperature during migration may supplant the influence of water flow,... |
| Tipo: Text |
Palavras-chave: Small river; Reproduction; Biological features; Anadromous migration; Allis shad. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1214.pdf |
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| Benhaim, David; Begout, Marie-laure; Chatain, Beatrice. |
| The present work compared wild-caught and domesticated sea bass juveniles swimming activity, exploration and visual attraction induced by an unfamiliar congener located behind a transparent wall at the end of one arm of a T-maze. This cognitive challenge was based on the hypothesis that placed into a novel and therefore stressful environment; the fish would adopt a gregarious behaviour even though they were not familiar with the present congener. Twenty individuals of similar size from both origins were individually tested. After a 5min acclimatization period, the wall of the start-box was removed and the maze was filmed during 20 min. Different swimming variables including angular velocity (Vang), total distance travelled (Dtot), velocity mean (Vel), time... |
| Tipo: Text |
Palavras-chave: Domestication; Maze; Visual cue; Personality; Swimming activity. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00192/30322/28793.pdf |
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| Pean, Samuel; Daouk, Tarek; Vignet, Caroline; Lyphout, Laura; Leguay, Didier; Loizeau, Veronique; Begout, Marie-laure; Cousin, Xavier. |
| The use of polychlorinated biphenyls (PCBs) has been banned for several decades. PCBs have a long biological half-life and high liposolubility which leads to their bioaccumulation and biomagnification through food chains over a wide range of trophic levels. Exposure can lead to changes in animal physiology and behavior and has been demonstrated in both experimental and field analyses. There are also potential risks to high trophic level predators, including humans. A maternal transfer has been demonstrated in fish as PCBs bind to lipids in eggs. In this study, behavioral traits (exploration and free swimming, with or without challenges) of contaminated zebrafish (Danio rerio) adults and their offspring (both as five-day-old larvae and as two-month-old fish... |
| Tipo: Text |
Palavras-chave: Exploration; Swimming activity; Organic pollutant effects; Generation; Video analysis. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00167/27799/26068.pdf |
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| Vignet, Caroline; Devier, Marie-hélène; Le Menach, Karyn; Lyphout, Laura; Potier, Jeremy; Cachot, Jerome; Budzinski, Helene; Begout, Marie-laure; Cousin, Xavier. |
| A natural sediment spiked with three individual polycyclic aromatic hydrocarbons (PAHs; pyrene, phenanthrene and benzo[a]pyrene) was used to expose zebrafish embryos and larvae during 4 days. The total PAH concentration was 4.4 μg g−1 which is in the range found in sediment from contaminated areas. Quantification of metabolites in the larvae after exposure confirmed the actual contamination of the larvae and indicated an active metabolism especially for pyrene and benzo[a]pyrene. After a transfer in a clean medium, the larvae were reared to adulthood and evaluated for survival, growth, reproduction, and behavior. Measured endpoints revealed a late disruption of growth (appearing at 5 months) and a trend toward a lower reproductive ability. Adults of... |
| Tipo: Text |
Palavras-chave: Danio rerio; Polycyclic aromatic hydrocarbon; Lifecycle; Anxiety-like behavior; Offspring. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00188/29909/28497.pdf |
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| Begout, Marie-laure; Lagardere, Jean-paul. |
| An experiment was conducted to measure swimming activity of rainbow trout (254.0 +/- 33.7 g) held in outdoor tanks under three culture conditions with stocking density used to generate differences: 27 (Culture Density 1, CD1), 80 (CD2) and 136 kg m(-3) (CD3). Fish were fed dry pellets at 1% of tank biomass from 9h00 to 13h00 with automatic feeders. Using acoustic telemetry, fish positions were monitored every 5 s during 48 h for nine fish (three in each treatment). Swimming behaviour was analysed in terms of trajectories: they varied between (i) holding position (high turning angles), (ii) chaotic trajectories (equal use of all turning angles) and (iii) circular swimming (average turning angle of 60degrees). Space utilisation differed for each culture... |
| Tipo: Text |
Palavras-chave: Rainbow trout; Aquaculture; Swimming activity; Fish welfare; Acoustic telemetry. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/publication-387.pdf |
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| Millot, Sandie; Nilsson, Jonatan; Fosseidengen, Jan Erik; Begout, Marie-laure; Kristiansen, Tore. |
| 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 degrees C) that were first given the choice between two self-feeders with identical content (Period 1 of 14 days) and... |
| Tipo: Text |
Palavras-chave: Learning; Self-feeding; Social status; Behaviour; Coping abilities; Gadidae. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00116/22754/20605.pdf |
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| Millot, Sandie; Begout, Marie-laure; Chatain, Beatrice. |
| Differences in bold and shy personality on sea bass Dicentrarchus labrax were investigated between a population (wild) produced from wild-brood fish and a population (selected) produced from selected-brood fish. During the experiment (112 days), fish were reared under self-feeding condition to characterize the feeding behaviour of each individual fish. Three risk-taking tests (T1, T2 and T3 of 24 h with day-night alternation) were carried out at > 1 month intervals on 180 fish of each strain in order to monitor D. labrax behaviour over time and in relation to the light:dark period. A risk-taking score was evaluated via a preference choice between a safe zone (without food) and a risky zone (potentially with food) by recording the number and the duration... |
| Tipo: Text |
Palavras-chave: Learning; Habituation; Domestication; Choice test; Boldness. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-7313.pdf |
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| Millot, Sandie; Pean, Samuel; Leguay, Didier; Vergnet, Alain; Chatain, Beatrice; Begout, Marie-laure. |
| Among other strategies to improve fish welfare in rearing environment, domestication and/or selective breeding was proposed to minimize fish responsiveness to husbandry practices. To verify this hypothesis on a recently domesticated specie, the sea bass, Dicentrarchus labrax, L., an experiment was realized, using four populations differing according to their level of domestication or selection: one population produced from wild parents (Wild), one population produced from parents domesticated for one generation (Domesticated) and two produced from parents selected for growth for one generation (Selected A and Selected B). The experiment was carried out over 91 days with 600 fish (50 fish per tank, 150 fish per population). After a control period, the fish... |
| Tipo: Text |
Palavras-chave: Feed intake; Feeding rhythm; Specific growth rate; Adaptation capacities; Welfare. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00011/12254/9030.pdf |
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| Millot, Sandie; Begout, Marie-laure. |
| The long term influence of individual biological rhythms on group feed demand behaviour was investigated in European sea bass (Dicentrarchus labrax) held under controlled environmental conditions with an on-demand feeding system. The experiment was realized over 219 days with 190 fish distributed on 4 tanks. Sea bass had a mean body mass comprised between 139 g to 183 g. The number of feed demand acts by each individual was calculated daily, and the population could thus be partitioned into three categories (high-, low-and zero-triggering fish). The duration of the period that an individual held high-triggering status could vary, but was 63 +/- 16 days on average. The transition period between two highest-triggering fish in one tank was on average 4 +/- 4... |
| Tipo: Text |
Palavras-chave: Dicentrarchus labrax; Self feeder; Social interactions; Feed demand leader; Feeding rhythms. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6874.pdf |
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| Ferrari, Sebastien; Horri, Khaled; Allal, Francois; Vergnet, Alain; Benhaim, David; Vandeputte, Marc; Chatain, Beatrice; Begout, Marie-laure. |
| To understand the genetic basis of coping style in European seabass, fish from a full factorial mating (10 females x 50 males) were reared in common garden and individually tagged. Individuals coping style was characterized through behavior tests at four different ages, categorizing fish into proactive or reactive: a hypoxia avoidance test (at 255 days post hatching, dph) and 3 risk-taking tests (at 276, 286 and 304 dph). We observed significant heritability of the coping style, higher for the average of risk-taking scores (h2 = 0.45 ± 0.14) than for the hypoxia avoidance test (h2 = 0.19 ± 0.10). The genetic correlations between the three risk-taking scores were very high (rA = 0.96–0.99) showing that although their repeatability was moderately high (rP =... |
| Tipo: Text |
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| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00362/47278/47239.pdf |
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| Tetard, Stephane; Feunteun, Eric; Bultel, Elise; Gadais, Romain; Begout, Marie-laure; Trancart, Thomas; Lasne, Emilien. |
| Connectivity in aquatic systems is often related to abundance and permeability of physical barriers, such as dams, which delay or impede movements of biota with important consequences for aquatic biodiversity. Water quality may, however, also control connectivity between essential habitats. In macrotidal estuaries, Estuarine Turbidity Maxima (ETM) have a strong impact on water quality because of the low oxygen concentration occurring as a response to the related high bacterial and low photosynthetic activities. In this study, we assess Allis shad estuarine spawning migration in 2011 and 2012 in the Loire River (France) where the ETM occurs at spring and summer. Using an acoustic telemetry array, we show that trans-estuarine migration is inhibited during... |
| Tipo: Text |
Palavras-chave: Connectivity; Hypoxic conditions; Acoustic telemetry; Estuarine migration; Allis shad. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00301/41212/40365.pdf |
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| Guinand, Bruno; Durieux, Eric D. H.; Dupuy, Celie; Cerqueira, Frederique; Begout, Marie-laure. |
| Growth-related characters, condition factor, and genetic differentiation were investigated for a single cohort of young-of-the-year (YOY) sole within and among nurseries with differing levels of heavy metals (Cd, Cu and Zn) contamination in the two Charentais Straits, Bay of Biscay, France. Analyses were performed when individuals recruited (May), then after a full summer spent in each nursery (October). Levels of phenotypic and genetic diversity were compared, together with genetic differentiation at a candidate metallothionein (MT) locus and three putatively neutral microsatellite loci. No phenotypic or genetic differentiation was detected among nurseries in May, but significant variation at each phenotypic trait and at the multilocus level in October (P... |
| Tipo: Text |
Palavras-chave: Solea solea; Nursery; Bay of Biscay; Metallothionein. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00033/14392/11694.pdf |
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| Durieux, Eric; Begout, Marie-laure; Pinet, Patrick; Sasal, Pierre. |
| This study focused on the spatio-temporal variation in the host-parasite system, 0-group sole-digenean metacercariae, in nearshore coastal areas at relatively small spatial scale. 0-group soles were sampled using a standard beam trawl in April, May, June, August and October 2005 at nine different sites in the Pertuis Charentais area (Bay of Biscay, France). Sole density, size, Fulton's condition factor K and digenean metacercariae communities were analysed. 0-group sole concentrated in shallow and muddy areas where they accumulated digenean metacercariae. Parasite communities displayed strong spatial patterns tightly linked to the distribution of the first intermediate mollusc hosts. These parasitological data suggest that 0-group sole during their first... |
| Tipo: Text |
Palavras-chave: Flatfish; Juveniles; Trematodes; Parasite Community; Spatio-temporal Dynamics; Habitat Use. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00008/11924/8640.pdf |
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| Campeas, Arnaud; Millot, Sandie; Chatain, Beatrice; Begout, Marie-laure; Alunno-bruscia, Marianne. |
| Reared sea bass (Dicentrarchus labrax) represent 13% of the economic weight of the Mediterranean aquaculture production (FAO, 2005) and is a subject of selection program. However, the traditional goal of selection that prevailed in the last century, i.e. increasing productivity, have to be modulated by new objectives such as better feed management or increasing fish welfare. The aim of our study is to evaluate the influence of domestication and selection, and their interactions with stress, on the energy balance in sea bass (Dicentrarchus labrax). Therefore, we used two experimental datasets and analysed their results through a mathematical model. Four strains of sea bass were studied: i) Wild strain, ii) Domesticated strain (first generation obtained by... |
| Tipo: Text |
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| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00032/14371/11665.pdf |
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| Registros recuperados: 69 | |
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