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| Registros recuperados: 50 | |
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| 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 |
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| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00029/14015/11205.pdf |
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| 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 |
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| Ano: 1988 |
URL: http://archimer.ifremer.fr/doc/00044/15543/12920.pdf |
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| 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 |
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| Ano: 1993 |
URL: http://archimer.ifremer.fr/doc/1993/publication-7479.pdf |
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| 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 |
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| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4766.pdf |
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| 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 |
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| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00077/18777/16357.pdf |
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| 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 |
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| 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 |
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| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00051/16189/13702.pdf |
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| 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 |
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| 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 |
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| Registros recuperados: 50 | |
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