Consulta: creatorFacets:"Coves, Denis"
Registros recuperados: 50
Data/hora: 04/06/2024 04:42:27

VALDORA 2018. Etude de la perte de poids au jeûne sur deux classes de poids de dorades sauvages, Sparus aurata, maintenues en vivier
Provedor de dados: 5
Autores: Coves, Denis; Dutto, Gilbert; Geoffroy, Thibault.
L’étude a été menée sur deux classes de poids (260-450g et 460-980 g) de dorades sauvages maintenues à jeun en vivier pendant 40 jours après 3 semaines de captivité en cages sans alimentation. Au cours de cette phase de captivité les conditions de température ont progressivement évolué de 16.5 à 9.3 °C. Le taux de saturation en oxygène est resté supérieur à 95%. Les autres conditions de stockage ont été estimées non limitantes. Dans ce contexte, la perte de poids individuelle mesurée sur 2 lots de 30 individus de chaque classe de poids est de 3.7% pour les plus petits et de 3.3% pour les plus gros poissons.
Tipo: Text
Palavras-chave: Dorades royales sauvages; Sparus aurata; Dévalaison; Vivier; Perte de poids au jeûne; Valorisation.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00628/74039/73372.pdf

Seedling production of Atlantic bluefin tuna (ABFT) Thunnus thynnus. The selfdott project
Provedor de dados: 5
Autores: De La Gandara, Fernando; Mylonas, Constantinos C.; Coves, Denis; Ortega, Aurelio; Bridges, Christopher R.; Belmonte Rios, Antonio; Vassallo-agius, Robert; Papandroulakis, Nikos; Rosenfeld, Hanna; Tandler, A; Medina, Antonio; Demetrio, A; Corriero, Aldo; Fauvel, Christian; Falcon, Jack; Sveinsvoll, K; Ghysen, Alain; Deguara, S; Gordin, Hillel.
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00029/14015/11205.pdf

The characteristics of sea bass (Dicentrarchus labrax ) eggs:Description, biochemical composition and hatching performances
Provedor de dados: 5
Autores: Devauchelle, Nicole; Coves, Denis.
This paper concerns eggs of captive fish and gonads of wild fish, from the Brittany coast obtained in the 7-18 degree C thermal range. The diameters of eggs, 1.07-1.32 mm are compared to those observed in other areas, especially along the Mediterranean coast. The duration of embryogenesis as a function of temperature and the efficiency of different incubators are discussed. The quality of eggs in relation with larval survival is discussed through the biochemical composition of the eggs collected in captivity compared to that of wild fish gonads. The absolute values of lipids, proteins, fatty acids, lipid classes, phosphatides and minerals measured, also the positive relations obtained between egg dry weight, diameters, mortality during incubation are...
Tipo: Text
Ano: 1988
URL: http://archimer.ifremer.fr/doc/00044/15543/12920.pdf

Culture of sea bass (Dicentrarchus labrax L)
Provedor de dados: 5
Autores: Coves, Denis; Dewavrin, Guirrec; Breuil, Gilles; Devauchelle, Nicole.
Tipo: Text
Ano: 1991
URL: http://archimer.ifremer.fr/doc/00049/16021/13482.pdf

Pour un poisson bien élevé : activité à l'Ifremer
Provedor de dados: 5
Autores: Coves, Denis.
La zootechnie est une science dont l'Ifremer a su, ces 10 dernières années, favoriser l'épanouissement et son application aux poissons marins en cours de domestication. Avec succès d'ailleurs, à en croire les jugements de nos collègues européens qui citent cette démarche comme une référence.
Tipo: Text
Ano: 1993
URL: http://archimer.ifremer.fr/doc/1993/publication-7479.pdf

Effects of high food-demand fish removal in groups of juvenile sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Di Poi, C; Beauchaud, M; Bouchut, C; Dutto, Gilbert; Coves, Denis; Attia, J.
In self-feeding conditions, a few individual sea bass (Dicentrarchus labrax (L., 1758)) display strong activity in striking the food dispenser, whereas the remaining individuals of the group actuate the feeder weakly or never. Here, we investigated the effects of removal of the individuals showing dominant activity on the social and feeding behaviours in groups of juvenile sea bass. Following removal, new fish showing a dominant self-feeding activity quickly appear. They always come from the group of fish that have a low number of triggering actuations. This observation shows that it takes less time, about 5 days after the removal of dominant triggerers vs. 14 days at the beginning, for the re-establishment of the behavioural structure, suggesting the...
Tipo: Text
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4766.pdf

Elevage intensif du loup Dicentrarchus labrax
Provedor de dados: 5
Autores: Coves, Denis; Gasset, Eric.
Different seabass (Dicentrarchus labrax) intensiv rearing technics have been experimented in the pilot scale unit of our laboratory. During these upscalfing operation, the results obtained allow us to compare costs related to each fingemng production method. Closed system combined with early weaning with an efficient micropellet saves at least 69 % of direct production costs by comparison with an open system with Arternia during larval phase. However if closed systems are commonly used by private hatcheries, larval micropellets are always at experimental step.
Tipo: Text
Palavras-chave: Production cost; Early weaning; Closed system; Intensiv; Rearing; D. Labrax; Coût de production; Sevrage précoce; Recyclage; Intensif; Elevage; D. Labrax.
Ano: 1993
URL: http://archimer.ifremer.fr/doc/1993/rapport-1916.pdf

Developmental origin of a major difference in sensory patterning between zebrafish and bluefin tuna
Provedor de dados: 5
Autores: Ghysen, Alain; Dambly-chaudiere, Christine; Coves, Denis; De La Gandara, Fernando; Ortega, Aurelio.
The posterior lateral line system (PLL) of teleost fish comprises a number of mechanosensory organs arranged in defined patterns on the body surface. Embryonic patterns are largely conserved among teleosts, yet adult patterns are highly diverse. Although changes in pattern modify the perceptual abilities of the system, their developmental origin remains unknown. Here we compare the processes that underlie the formation of the juvenile PLL pattern in Thunnus thynnus, the bluefin tuna, to the processes that were elucidated in Danio rerio, the zebrafish. In both cases, the embryonic PLL comprises five neuromasts regularly spaced along the horizontal myoseptum, but the juvenile PLL comprises four roughly parallel anteroposterior lines in zebrafish, whereas it...
Tipo: Text
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00077/18777/16357.pdf

Behavioral and neurophysiological responses of European sea bass (Dicentrarchus labrax) groups reared under food constraint
Provedor de dados: 5
Autores: Di-poi, Carole; Attia, Joël; Bouchut, Colette; Dutto, Gilbert; Coves, Denis; Beauchaud, Marilyn.
Tipo: Text
Ano: 2007
URL: http://archimer.ifremer.fr/doc/00346/45753/45395.pdf

Dietary lipid level affects fatty acid composition and hydrolase activities of intestinal brush border membrane in seabass
Provedor de dados: 5
Autores: Cahu, Chantal; Zambonino, Jose-luis; Corraze, Genevieve; Coves, Denis.
Triplicate groups of juvenile seabass (initial weight of 241 g) were fed during 13 weeks three isonitrogenous experimental diets containing different lipid levels, 12% (LL group), 21% (ML group) and 30% (HL group). At the end of the experiment, fish weight gain was similar among the 3 dietary groups. Intestinal brush border membranes were purified for each dietary group; one part of the brush border fraction was dedicated to enzyme assays, the remaining fraction being used for lipid extraction followed by fatty acid analysis. The fatty acid composition of the brush border membrane differed among the 3 groups, although the 3 experimental diets had the same fatty acid composition. The increase in dietary lipid level resulted in a lowering in (n-3)...
Tipo: Text
Palavras-chave: Membrane lipid; Intestine; Fish; Fatty acids; Dietary lipids; Brush border hydrolases.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/publication-901.pdf

Current status of the French intensive larval rearing techniques for sea bass (Dicentrarchus labrax) &amp; sea bream (Sparus auratus)
Provedor de dados: 5
Autores: Chatain, Beatrice; Coves, Denis.
Tipo: Text
Ano: 1991
URL: http://archimer.ifremer.fr/doc/00364/47486/47777.pdf

Probiotic treatment of live food organisms for Atlantic bluefin tuna larvae: microbiological &amp; immunological criteria
Provedor de dados: 5
Autores: Coves, Denis; De Vogue, Benoist; Desbruyeres, Elisabeth; Dhormes, Benoit; Fievet, Julie; Huelvan, Christine; Lallement, Stephane; Le Gall, Marie-madeleine; Ruelle, Francois; Vidal, Marie-odile; Castex, M.; Mazurais, David; Cahu, Chantal; Gatesoupe, François-joel.
Tipo: Text
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00051/16189/13702.pdf

Effect of chronic ammonia exposure on growth of European seabass (Dicentrarchus labrax) juveniles
Provedor de dados: 5
Autores: Lemarie, Gilles; Dosdat, Antoine; Coves, Denis; Dutto, Gilbert; Gasset, Eric; Person, Jeannine.
Chronic effects of ammonia were studied in juvenile seabass, Dicentrarchus labrax (mean weight= 11 g), exposed for 63 days to eight stable ammonia concentrations, ranging from 0.24 to 0.90 mg l(-1) unionised ammonia nitrogen (UIA-N), respectively, from 6.1 to 22.3 mg l(-1) total ammonia nitrogen (TA-N). Temperature (21.8 degreesC), pH (8.0), salinity (37.0 ppt), and oxygen concentration (over 80% saturation at the outlet) were maintained constant. Fish were fed using a self-feeder device, and they were starved during the last 8 days. Mortality of 28.9 and 42.6% occur-red within the first 8 days at the two highest UIA-N concentrations, respectively, 0.90 and 0.88 mg l(-1). From days 0 to 55, a 1.8-fold increase in weight gain was observed under the 0.90-mg...
Tipo: Text
Palavras-chave: Plasma ammonia; Growth; Seabass; Chronic toxicity; Ammonia.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/publication-628.pdf

Influence of an environmental parameter in seabass (Dicentrarchus labrax L.) voluntary feed intake in intensive production system. General experimental designe illustrated by the example of water ammonia nitrogen level action
Provedor de dados: 5
Autores: Coves, Denis; Gasset, Eric; Lemarie, Gilles; Dutto, Gilbert.
Tipo: Text
Ano: 1996
URL: http://archimer.ifremer.fr/doc/00317/42853/42268.pdf

Caractérisation de la qualité du platax (Platax orbicularis) issu d’aquaculture : transformation - composition chimique - caractérisation sensorielle
Provedor de dados: 5
Autores: Knockaert, Camille; Cornet, Josiane; Cardinal, Mireille; Gasset, Eric; Maamaatuaiahutapu, Moana; Coves, Denis.
Tipo: Text
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00058/16917/14396.pdf

Améliorations récentes des techniques d'élevages et de la qualité des animaux produits en écloserie de loup, Dicentrarchus labrax
Provedor de dados: 5
Autores: Coves, Denis.
Tipo: Text
Ano: 1986
URL: http://archimer.ifremer.fr/doc/00142/25313/23390.pdf

Intensive recirculation production system in seabass, Dicentrarchus labrax L.
Provedor de dados: 5
Autores: Coves, Denis; Gasset, Eric.
Tipo: Text
Ano: 1996
URL: http://archimer.ifremer.fr/doc/00259/37019/35519.pdf

Cloning and retinal expression of melatonin receptors in the European sea bass, Dicentrarchus labrax
Provedor de dados: 5
Autores: Sauzet, S; Besseau, L; Perez, P; Coves, Denis; Chatain, Beatrice; Peyric, E; Boeuf, G; Munoz Cueto, J; Falcon, J.
Melatonin contributes to synchronizing behaviors and physiological functions to daily and seasonal rhythm in fish. However, no coherent vision emerges because the effects vary with the species, sex, moment of the year or sexual cycle. And, scarce information is available concerning the melatonin age, receptors, which is crucial to our understanding of the role melatonin plays. We report here the full length cloning of three different melatonin receptor subtypes in the sea bass Dicentrarchus labrax, belonging, respectively, to the MT1, MT2 and Mellc subtypes. MT1, the most abundantly expressed, was detected in the central nervous system, retina, and gills. MT2 was detected in the pituitary gland, blood cells and, to a lesser extend, in the optic tectum,...
Tipo: Text
Palavras-chave: Retina; Melatonin receptors; Sea bass.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4513.pdf

Evaluation des rejets biologiques de juvéniles de platax (Platax orbicularis) : approche méthodologique
Provedor de dados: 5
Autores: Colleter, Julie; Gasset, Eric; Buchet, Vincent; Coves, Denis.
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00020/13174/10232.pdf

Focus : Marine Nature Park of Mayotte, a case study
Provedor de dados: 5
Autores: Callier, Myriam; Giannasi, Paul; Coves, Denis.
Tipo: Text
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00430/54140/55469.pdf

Tagging juvenile seabass and sole with telemetry transmitters: medium-term effects on growth
Provedor de dados: 5
Autores: Begout, Marie-laure; Coves, Denis; Dutto, Gilbert; Laffargue, Pascal; Lagardere, Francoise.
The effects of tagging with acoustic transmitters on the growth of juvenile seabass, Dicentrarchus labrax (L.) (initial mean mass +/- SD, 173 g +/- 23.4) in a 47 d tank experiment, and sole. Solea solea (L.) ( 103.2 g +/- 14.8) in a 72 d tank experiment and (104.0 g +/- 18.4) in a 58 d salt marsh mesocosm experiment were examined. Twenty externally tagged seabass grew more slowly than the 20 with surgically implanted tags, which reached the same mass as nine control fish. Movements of the external transmitter's harness caused abrasions of the skin and loss of the tag in 60% of the cases. We thus recommend implanting transmitters for telemetry studies of juvenile seabass weighing between 120 and 214 g and carrying a tag that represents 2.2-2.5% of body...
Tipo: Text
Palavras-chave: Aquaculture; Telemetry; Marking techniques; Juvenile fish; Adaptation.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/publication-386.pdf

Mécanisme d'apparition de la vessie natatoire chez les larves d'ombrine ocellée (Sciaenops ocellatus) et de platax (Platax orbicularis)
Provedor de dados: 5
Autores: Dutto, Gilbert; Gasset, Eric; Falguiere, Jean-claude; Bompas, Gregory; Connan, Jean-paul; Coves, Denis.
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00020/13167/10225.pdf

La recherche pour un développement durable de la pisciculture marine
Provedor de dados: 5
Autores: Roque D'Orbcastel, Emmanuelle; Coves, Denis; Chatain, Beatrice; Callier, Myriam.
Tipo: Text
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00487/59825/62968.pdf

Long-term monitoring of individual fish triggering activity on a self-feeding system: An example using European sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Coves, Denis; Beauchaud, M; Attia, J; Dutto, Gilbert; Bouchut, C; Begout, Marie-laure.
In two experiments, a computerized on-demand feeding system coupled with a PIT tag monitoring device was used to continuously record the triggering activity by ca. 50 individual sea bass for 55 days (Exp. 1, initial average body weight and coefficient of variation, CV: 299 g, 15%) and 69 days (Exp. 2, 157 g, 13%). Each group was stocked in 1 m(3) tanks and exposed to a water temperature of 21 +/- 1 degrees C and a light regime of 16:8 LD. Only 5% of the triggering activity was not associated with simultaneous PIT tag detection. Although each individual was detected via PIT tag during the experiment, only 67% and 74% of the fish actuated the trigger at least once in Exp. 1 and Exp. 2, respectively. Moreover, only two fish in Exp. 1 and one fish in Exp. 2...
Tipo: Text
Palavras-chave: PIT tag detection antenna; Individual triggering activity; Self feeding; Sea bass.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1341.pdf

Typology of individual growth in sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Gardeur, J; Lemarie, Gilles; Coves, Denis; Boujard, Thierry.
The individual growth variability of passive integrated transponder tagged sea bass was studied using data sets from two different experiments. In experiment 1 (n = 485), fish submitted to different photoperiod regimes were held in fourteen groups of individual weight of 88 ± 13 g (mean ± SD). In experiment 2 (n = 748, initial weight 243 ± 30 g) fish were held in fifteen groups and had either free or restricted access to diets with three lipid levels. After adjustment for treatment and tank effects, individual growth curves were analysed using multivariate analysis (principal component analysis and clustering) and were modelled using the summary statistics technique. Different growth profiles where characterized. All of them appeared to be curvilinear....
Tipo: Text
Palavras-chave: Variability; Typology; Sea bass; Modelling; Growth curves; Variabilité; Typologie; Bar; Modélisation; Courbes de croissance.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/publication-548.pdf

A simple way of avoiding feed wastage in European seabass, Dicentrarchus labrax, under self-feeding conditions
Provedor de dados: 5
Autores: Coves, Denis; Gasset, Eric; Lemarie, Gilles; Dutto, Gilbert.
Self-feeding systems allow fish to freely express feeding activity. A simple rod at the water surface can act as a trigger and provide fish with a way of obtaining pellets from a feeder. Such a rod presented to experienced European seabass, Dicentrarchus labrax, may lead to feed wastage, probably as a result of unintentional fish contacts with the trigger. Trigger protection screens have been designed to prevent fish contacting the trigger by chance, and the efficacy of such screens was tested. Nocturnal and diurnal feed delivery and feed wasted were compared under conditions where the rod was unprotected or protected by semi-cylindrical or cylindrical screens. Tests were conducted using an unrestricted self-feeding regime (reward: 0.2 g pellet per kg of...
Tipo: Text
Palavras-chave: Feeding behaviour; Feed wastage; Self feeding; Fish culture; Comportement alimentaire; Gaspillage d'aliment; Auto alimentation; Élevage de poissons.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/1998/publication-867.pdf

Fiche technique. La nouvelle génération d'incubateur autonome fonctionnant en circuit fermé : une nouvelle étape dans la fiabilité et le contôle zoosanitaire de l'élevage des poissons marins
Provedor de dados: 5
Autores: Coves, Denis; Bouget, Jean-francois.
Tipo: Text
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00342/45330/44790.pdf

Guide méthodologique pour l'élaboration des dossiers de demande d'autorisation d'Installations Classées pour la Protection de l'Environnement (ICPE) en matière de pisciculture marine pour la région Corse
Provedor de dados: 5
Autores: Roque D'Orbcastel, Emmanuelle; Sauzade, Didier; Ravoux, Georges; Coves, Denis.
Sea fish farms with production of more than 20 tons per year in France must obtain two operating licences: (i) one for Sea Farming (AECM), with the aim of ensuring that the granted site and use of the maritime public domain for exploitation will respect all restrictions of general interest; (ii) one for regulating Facilities Classified for the Protection of the Environment (ICPE). Although the first one requires a relatively simple licence request file, the second one demands a very complete file, which includes, beyond the notice of exploitation information, a complete impact study, as well as a hazards study and a health and safety notice. In this context, petitioners in Corsica (adjustment of status or new exploitation) are faced with the same...
Tipo: Text
Palavras-chave: Specifications; Study of dangers; Effluent; Potential impact; Impact survey; Exploitation; Demand; Marine fish culture; Corsica; Classified installations for the environment protection (CIEP); Methodological guide; Cahier des charges; Etude de dangers; Rejets; Impacts potentiels; Etude d'impact; Exploitation; Demandeur; Pisciculture marine; Corse; Installations Classées pour la Protection de l'Environnement (ICPE); Guide méthodologique.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/rapport-2188.pdf

Description of the unusual digestive tract of   Platax orbicularis   and the potential impact of   Tenacibaculum maritimum   infection
Provedor de dados: 5
Autores: Alix, Maud; Gasset, Eric; Bardon-albaret, Agnes; Noel, Jean; Pirot, Nelly; Perez, Valérie; Coves, Denis; Saulnier, Denis; Lignot, Jehan-hervé; Cucchi, Patricia N.
Background Ephippidae fish are characterized by a discoid shape with a very small visceral cavity. Among them Platax orbicularis has a high economic potential due to its flesh quality and flesh to carcass ratio. Nonetheless, the development of its aquaculture is limited by high mortality rates, especially due to Tenacibaculum maritimum infection, occurring one to three weeks after the transfer of fishes from bio-secure land-based aquaculture system to the lagoon cages for growth. Among the lines of defense against this microbial infection, the gastrointestinal tract (GIT) is less studied. The knowledge about the morphofunctional anatomy of this organ in P. orbicularis is still scarce. Therefore, the aims of this study are to characterize the GIT in...
Tipo: Text
Palavras-chave: Digestive system; Tenacibaculosis; Mucous; Osmoregulation; Absorption; Batfish; Teleost.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00652/76421/77485.pdf

Marine fish culture of "new species" farmed in Europe
Provedor de dados: 5
Autores: Suquet, Marc; Divanach, Pascal; Hussenot, Jerome; Coves, Denis; Fauvel, Christian.
In Europe, fish aquaculture in a marine environment developed following two successive waves: Atlantic salmon and then sea-bass and sea-bream. Rearing "new marine fish species" is sustained for many complementary reasons. This paper aims at presenting the aquaculture status of these "new species," research carried out and then problems and perspectives suggested by farming development in these species.
Tipo: Text
Palavras-chave: Species; Sea fishes; Fish culture; Europa; Diversification.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6558.pdf

Projet SELFDOTT : Avancées de l'élevage larvaire et de la production de juvéniles en 2010
Provedor de dados: 5
Autores: Coves, Denis.
Tipo: Text
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00050/16115/13598.pdf

Sea bass (Dicentrarchus labrax ) reproduction in captivity:Gametogenesis and spawning
Provedor de dados: 5
Autores: Devauchelle, Nicole; Coves, Denis.
This paper describes the large-scale production of eggs and larvae of sea bass (Dicentrarchus labrax ) and shows how spawning can be planned to produce viable eggs throughout the year by manipulation of photoperiod and temperature. The rearing temperature was 9.5-22 degree C during spawning and 9-24 degree C during the gametogenesis. The photoperiodic cycles tested were normal (i.e. the photoperiodic cycle observed at Palavas-les-Flots, Mediterranean coast, France, 1984/1987) advanced by 3 to 5 months and delayed by 2 months.
Tipo: Text
Ano: 1988
URL: http://archimer.ifremer.fr/doc/00044/15542/12919.pdf

A spatiotemporal study of bacterial community profiles associated with Atlantic bluefin tuna larvae, Thunnus thynnus L., in three Mediterranean hatcheries
Provedor de dados: 5
Autores: Gatesoupe, Joel; Coves, Denis; Ortega, Aurelio; Papandroulakis, Nikos; Vadstein, Olav; De La Gandara, Fernando.
During the first 2 years of larval rearing trials with Atlantic bluefin tuna, survival was a challenging issue. As bacterial colonization of the gut has been shown to play a key role for other species, we studied the profiles of the microbiota associated with individual larvae at different stages in three distant hatcheries. The Bacterial Community Profile (BCP) was quantified based on PCR-DGGE analyses of partial amplicons from 16S rDNA. Considerable individual variability in BCP was observed before onset of feeding, and the BCP did not show regular fluctuation during ontogenesis. Microalgae were added to the rearing tanks in two of the three hatcheries, but it was not possible to distinguish the effect of location from the effect of algal addition on...
Tipo: Text
Palavras-chave: Larval rearing; Bacterial diversity; DGGE; Thunnus thynnus.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00075/18648/16197.pdf

Study of the ontogeny of the orbicular batfish (Platax orbicularis)
Provedor de dados: 5
Autores: Bardon-albaret, Agnes; Gasset, Eric; Teissier, Alexandre; Teiri, W; Maamaatuaiahutapu, M; David, R; Tayale, Alexandre; Belliard, Corinne; Levy, Peva; Basset, Caline; Sicard, Julien; Magre, Kevin; Herne, Antoine; Reverter, Myriam; Sasal, Pierre; Coves, Denis; Saulnier, Denis.
Tipo: Text
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00281/39246/37819.pdf

Optimizing the exploitation of wild and reared bluefin tunas under the constraint of sustainability: the Ifremer R&amp;D project
Provedor de dados: 5
Autores: Coves, Denis; Rene, Francois; Fauvel, Christian.
A brief account is given of a research project commenced in 2000 by IFREMER concerning aspects of wild bluefin farming in offshore cages and reproduction control in land-based facilities. Three inter-related sub­ projects have been suggested: (i) wild fish ongrowing and/or fattening; (ii) reproduction; and (Hi) fingerling production and improvement of the understanding of early stage recruitment limitations. The Integration of this project in other EU community activities is discussed.
Tipo: Text
Palavras-chave: Elevage du thon rouge sauvage; Cages offshore; Installations à terre; Production d'alevins; Engraissement; Reproduction; Wild bluefin tuna farming; Offshore cages; Land based facilities; Fattening; Fingerling production; Reproduction.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/00372/48347/48517.pdf

Regulation of feed intake, growth, nutrient and energy utilisation in European sea bass (Dicentrarchus labrax) fed high fat diets
Provedor de dados: 5
Autores: Boujard, Thierry; Gelineau, Anne; Coves, Denis; Corraze, Genevieve; Dutto, Gilbert; Gasset, Eric; Kaushik, Sadasivam.
Three practical isoproteic (54% protein) diets were formulated to contain graded levels of crude fat (diet L: 10%, diet M: 20% and diet H: 30%). Each diet was assigned unrestrictedly to three and restrictedly to two replicate groups of fish (IBW 243 g). In unrestricted groups, increasing the dietary lipid level led to a significant decrease in voluntary feed intake without affecting growth rate. In the feed-restricted groups, daily growth rates increased with increasing dietary fat levels. There was a significant and inverse effect of the dietary fat content on whole body moisture and fat levels, with highest lipid (ca. 20%) and lowest moisture (ca. 58%) contents in sea bass fed diet containing the highest lipid level; muscle lipid concentration was...
Tipo: Text
Palavras-chave: Phosphorus excretion; Feed intake; Lipid; Digestible energy; European sea bass; Dicentrarchus labrax.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/publication-392.pdf

Maîtrise technique de la production de poissons lagonaires Rapport 2008 et annexes
Provedor de dados: 5
Autores: Maamaatuaiahutapu, Moana; Joufoques, Vaiana; Tamata, Thiery; Dupieux, Sylvain; Teissier, Alexandre; Rarahu, David; Remoissenet, Georges; Gasset, Eric; Knockaert, Camille; Gueguen, Yannick; Coves, Denis.
Ce rapport traite de la poursuite de l’acquisition de connaissances, du début du transfert vers le secteur privé et des futurs travaux sur de l’élevage du Paraha peue (Platax orbicularis).   Acquisition de connaissances porte sur (i) Grossissement en cages en fonction du site d’élevage, tests de produits immuno-stimulants, définition de traitements anti-parasitaires, mise au point des méthodes de transport d’alevins et la mise en cages précoces d’animaux de 1 g pour le transport par voie aérienne vers les îles (i.i.) Synchronisation des pontes et mise en place d’un plan de croisement de géniteurs diminuant le risque de consanguinité et permettant un progrès génétique par la domestication et/ou la sélection, ainsi que la mise au point d’outils de...
Tipo: Text
Ano: 2008
URL: http://archimer.ifremer.fr/doc/00128/23887/21820.pdf

Development of the posterior lateral line system in Thunnus thynnus, the atlantic blue-fin tuna, and in its close relative Sarda sarda
Provedor de dados: 5
Autores: Ghysen, Alain; Schuster, Kevin; Coves, Denis; De La Gandara, Fernando; Papandroulakis, Nikos; Ortega, Aurelio.
The lateral line system of amphibians and fish comprises a large number of individual mechanosensory organs, the neuromasts, and their sensory neurons. The pattern of neuromasts varies markedly between species, yet the embryonic pattern is highly conserved from the relatively basal zebrafish, Danio rerio, to more derived species. Here we examine in more detail the development of the posterior lateral line (PLL) in embryos and early larvae of one of the most derived fish species, the blue-fin tuna Thunnus thynnus, and of its close relative, the Atlantic bonito Sarda sarda. WE! show that the basic features of embryonic PLL development, including the migratory properties of the PLL primordium, the patterning of neuromasts and their innervation, are largely...
Tipo: Text
Palavras-chave: Neuromast; Hair cell; Planar polarity; Cupula; Migrating primordium.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00019/13032/10162.pdf

Gene expression pattern of digestive and antioxidant enzymes during the larval development of reared Atlantic bluefin tuna (ABFT), Thunnus thynnus L.
Provedor de dados: 5
Autores: Mazurais, David; Coves, Denis; Papandroulakis, Nikos; Ortega, Aurelio; Desbruyeres, Elisabeth; Huelvan, Christine; Le Gall, Marie-madeleine; De La Gandara, Fernando; Cahu, Chantal.
The aim of this study was to determine whether mortality observed during the larval development of reared bluefin tuna (Thunnus thynnus) could be related to improper expression profiles of key genes involved in digestive or antioxidant response capabilities. Tuna larvae were sampled at hatching, 2, 5, 10, 15 and 20 dph (days post hatching) for the relative quantification of transcripts encoded by genes involved in digestive [trypsinogen 1 (TRYP1), alpha-amylase (AMY), aminopeptidase N (ANPEP)] and antioxidant [catalase (CAT)] functions. The levels of expression of ANPEP related to the development and maturation of intestinal function increased from 5 to 20 dph. Furthermore, AMY and TRYP1 genes, which are pancreatic enzymes implicated in carbohydrate and...
Tipo: Text
Palavras-chave: Tuna; Gene; Expression; Development; Digestion; Antioxidant.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00171/28264/26521.pdf

Effet du ratio lipides/protéines de l'aliment sur la croissance de l'ombrine ocellée (Sciaenops ocellatus) et sur les rejets biologiques
Provedor de dados: 5
Autores: Faure, Leslie; Regina, Françoise; Dutto, Gilbert; Falguiere, Jean-claude; Coves, Denis; Cahu, Chantal.
Tipo: Text
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00098/20947/18566.pdf

Scenarios of fish waste deposition at the sub-lagoon scale: a modelling approach for aquaculture zoning and site selection
Provedor de dados: 5
Autores: Chary, Killian; Callier, Myriam; Coves, Denis; Aubin, Joel; Simon, Julien; Fiandrino, Annie.
Spatial planning, including zoning and site-selection steps, is necessary to determine locations that minimize environmental impacts of aquaculture and respect ecosystem carrying capacities. This study aimed to analyse potential benthic waste deposition in a broad range of fish farming situations to facilitate zoning. To this end, we simulated waste dispersion for 54 aquaculture scenarios combining three red drum (Sciaenops ocellatus) farm types (Small, Medium, and Large) based on real farm characteristics and 36 sites with contrasting hydrodynamics in Mayotte’s North-East Lagoon. Key forcing variables and parameters of the particle-dispersion model for farms (layout and solid waste fluxes), species (feed- and faeces-settling velocities) and sites (depth...
Tipo: Text
Palavras-chave: Aquaculture zones; Carrying-capacity; Environmental impact; Hydrodynamics; NewDEPOMOD; Particle dispersion; Red drum; Scenario analysis.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00666/77810/79985.pdf

Behavioral and neurophysiological responses of European sea bass groups reared under food constraint
Provedor de dados: 5
Autores: Di Poi, Carole; Attia, J; Bouchut, C; Dutto, Gilbert; Coves, Denis; Beauchaud, M.
The individual food-demand behavior of juvenile European sea bass (Dicentrarchus labrax, L.) reared in groups under self-feeding conditions was investigated. The triggering activity on self-feeder, i.e. index of the food-demand activity, agonistic interactions and territorial behavior were monitored for periods of 42 to 68 days in six groups of 50 fish. The specific growth rate was calculated and the brain serotonergic activity was used as a stable index of social stress. Inter-individual differences appeared in triggering activity and three groups were distinguished: 3-5 high-triggering fish, 17-30 low-triggering fish and the remaining individuals were null-triggering fish. There were no significant differences in specific growth rates calculated at the...
Tipo: Text
Palavras-chave: Social stress; Brain serotonergic activity; Territorial behavior; Agonistic interactions; Self feeding; European sea bass; Triggering activity; Food demand behavior.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2637.pdf

Elevage larvaire du turbot (Scophtalmus maximus) en circuit fermé grande échelle
Provedor de dados: 5
Autores: Gasset, Eric; Coves, Denis.
Tipo: Text
Ano: 1993
URL: http://archimer.ifremer.fr/doc/00279/38997/37562.pdf

"Social knockout effect" on group feeding dynamic in juvenile sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Di-poi, Carole; Attia, Joël; Bouchut, Colette; Dutto, Gilbert; Coves, Denis; Beauchaud, Marilyn.
Tipo: Text
Ano: 2007
URL: http://archimer.ifremer.fr/doc/00346/45752/45394.pdf

Effect of chronic exposure to ammonia on growth, food utilisation and metabolism of the European sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Dosdat, Antoine; Person, Jeannine; Coves, Denis; Dutto, Gilbert; Gasset, Eric; Le Roux, Annick; Lemarie, Gilles.
The chronic effects of exposing sea bass (average initial weight 100 g) to ammonia in water at 22 degreesC were first evaluated over a 61-day period (period 1, P1) during which nine different groups were submitted to nine ambient ammonia levels ranging from 0.014 to 0.493 mg 1(-1) NH3-N (0.53-16.11 mg 1(-1) total ammonia nitrogen (TA-N)) and fed using self-feeders. At the end of P1, the fish were starved for 10 days (P2). Their recovery capacity was tested over 43 days (P3) after which the exogenous ammonia supply was stopped in all treatments and the fish were allowed to feed. After 20 days of exposure a highly significant effect of ammonia was evident from the decrease in feeding activity, voluntary feed intake (VFI) and specific growth rate (SGR), and...
Tipo: Text
Palavras-chave: Sea bass; Self feeding; Compensatory growth; Chronic toxicity; Ammonia.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/publication-595.pdf

Melatonin receptors expression (MT1 and MT2) in the pituitary of European sea bass (Dicentrarchus labrax): arising explanations for daily and seasonal variations in pituitary hormones
Provedor de dados: 5
Autores: Herrero, Maria Jesús; Besseau, L; Fuentes, M; Sauzet, S; Coves, Denis; Peyric, E; Boeuf, Gilles; Rubio, F; Falcon, Jack.
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00013/12429/9220.pdf

« Qui va à la chasse perd sa place ! » Hiérarchie et groupe social chez le loup de Méditerranée
Provedor de dados: 5
Autores: Di Poi, Carole; Attia, Joel; Beauchaud, Marilyn; Bouchut, Colette; Coves, Denis; Dutto, Gilbert; Mathevon, Nicolas.
Tipo: Text
Ano: 2006
URL: http://archimer.ifremer.fr/doc/00162/27284/25500.pdf

Modeling sea cage outputs for data-scarce areas: application to red drum (Sciaenops ocellatus) aquaculture in Mayotte, Indian Ocean
Provedor de dados: 5
Autores: Chary, Killian; Fiandrino, Annie; Coves, Denis; Aubin, Joel; Falguiere, Jean-claude; Callier, Myriam.
Robust and accurate prediction of fish farm waste is a first and crucial step in managing the cause-effect chain that leads to local environmental impacts of aquaculture. Since aquatic production is diversifying with new fish species and extending to new areas for which data can be scarce, it is important to develop parsimonious approaches with fewer data requirements and less scientific complexity. We developed the Farm productIon and Nutrient emiSsions (FINS) model, which simulates fish farm operation and estimates fish biomass, feed inputs, and waste emissions from sea cages using simple modeling approaches and a variety of data sources. We applied FINS to red drum (Sciaenops ocellatus) culture in Mayotte by collecting relevant input data (growth,...
Tipo: Text
Palavras-chave: Aquaculture waste modeling; CNP mass balance; Farming scenarios; Feed digestibility; Individual-based growth model; Red drum.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00498/61003/64475.pdf

The challenge of domestication of bluefin tuna Thunnus thynnus: highlights of the selfdott project from 2008-2009
Provedor de dados: 5
Autores: De La Gandara, Fernando; Mylonas, Constantinos C.; Coves, Denis; Bridges, Christopher R.; Belmonte Rios, Antonio; Vassallo-agius, Robert; Rosenfeld, Hanna; Medina, Antonio; Demetrio, G; Falcon, Jack; Sveinsvoll, K; Ghysen, Alain; Deguara, S.
Tipo: Text
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00134/24515/22545.pdf

No efficiency of the lateral system on nocturnal feeding in the European sea bass (Dicentrarchus labrax L.)
Provedor de dados: 5
Autores: Faucher, Karine; Dutto, Gilbert; Coves, Denis; Aubert, Anne; Lagardere, Jean-paul.
In order to evaluate the effect and consequence of lateral system inactivation on fish nocturnal feeding, the differential growth of groups of European sea bass maintained in different rearing conditions were compared. Whereas some fish with intact lateral system (placebo fish) were placed under a photoperiod of 12-L: 12-D, other placebo fish were kept in the dark. In the same way, fish deprived of lateral system by section of their lateral system nerves and antibiotic treatment were placed under a photoperiod of 12-L: 12-D and the others in the dark. For each of these four rearing conditions, two sets of experiment were realized. Percent mortality, feed rhythm, averaged daily feed demand, specific growth rate and feed efficiency were compared among these...
Tipo: Text
Palavras-chave: Feed efficiency; Growth; Nocturnal feeding; Photoperiod; Lateral system; European sea bass.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-2267.pdf