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| Registros recuperados: 17 | |
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| Dias, Jorge; Huelvan, Christine; Dinis, Maria; Metailler, Robert. |
| The incorporation of various bulk agents by substitution of an equivalent amount of the basal mixture was studied in terms of protein digestibility, growth performance and body composition in European seabass (Dicentrarchus labrax) juveniles. During the growth trial, triplicate groups of 40 seabass (mean initial weight: 7.0 g) were grown in seawater (salinity: 35; temperature: 18 degrees C) over 60 days. Fish were hand-fed, three times a day, one of seven experimental diets. Bulk agents tested at 10 or 20 % level of incorporation were silica, cellulose and a natural zeolite (chabamin). Feeding rates were adjusted in proportion to the percent dilution of the control diet without bulk incorporation. The incorporation of the bulk agents, at a 10 and 20 %... |
| Tipo: Text |
Palavras-chave: Dicentrarchus labrax Digestibilité Agents liants Nutrition des poissons; Dicentrarchus labrax Digestibility Inert fillers Fish nutrition. |
| Ano: 1998 |
URL: https://archimer.ifremer.fr/doc/1998/publication-870.pdf |
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| Zambonino, Jose-luis; Mazurais, David; Dubuc, Alexia; Queau, Pierre; Vanderplancke, Gwenaelle; Servili, Arianna; Cahu, Chantal; Le Bayon, Nicolas; Huelvan, Christine; Claireaux, Guy. |
| Ocean warming, eutrophication and consequent decrease in oxygen lead to smaller average fish size. Although such responses are well-known in an evolutionary context, involving multiple generations, it appears to be incompatible with current rapid environmental change. Rather, phenotypic plasticity could provide a means for marine fish to cope with rapid environmental changes. However, little is known about the mechanisms underlying plastic responses to environmental conditions that favour small phenotypes. Our aim was to investigate how and why European sea bass that had experienced a short episode of moderate hypoxia during their larval stage subsequently exhibited a growth depression at the juvenile stage compared to the control group. We examined... |
| Tipo: Text |
Palavras-chave: Climate change; Digestive enzymes; Dicentrarchus labrax; Growth; Hypoxia; Respirometry. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00373/48407/48635.pdf |
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| Crespel, Amelie; Zambonino-infante, Jose-luis; Mazurais, David; Koumoundouros, George; Fragkoulis, Stefanos; Quazuguel, Patrick; Huelvan, Christine; Madec, Lauriane; Servili, Arianna; Claireaux, Guy. |
| Ocean acidification is a recognized consequence of anthropogenic carbon dioxide (CO2) emission in the atmosphere. Despite its threat to marine ecosystems, little is presently known about the capacity for fish to respond efficiently to this acidification. In adult fish, acid-base regulatory capacities are believed to be relatively competent to respond to hypercapnic conditions. However, fish in early life stage could be particularly sensitive to environmental factors as organs and important physiological functions become progressively operational during this period. In this study, the response of European sea bass (Dicentrarchus labrax) larvae reared under three ocean acidification scenarios, i.e., control (present condition, P-CO2 = 590 mu atm, pH total =... |
| Tipo: Text |
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| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00393/50448/51181.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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| Mazurais, David; Ernande, Bruno; Quazuguel, Patrick; Severe, Armelle; Huelvan, Christine; Madec, Lauriane; Mouchel, Olivier; Soudant, P.; Robbens, J.; Huvet, Arnaud; Zambonino-infante, J.. |
| Microplastics are present in marine habitats worldwide and may be ingested by low trophic organisms such as fish larvae, with uncertain physiological consequences. The present study aims at assessing the impact of polyethylene (PE 10-45µM) microbeads ingestion in European sea bass (Dicentrarchus labrax) larvae. Fish were fed an inert diet including 0, 104 and 105 fluorescent microbeads per gram from 7 until 43 days post-hatching (dph). Microbeads were detected in the gastrointestinal tract in all fish fed diet incorporating PE. Our data revealed an efficient elimination of PE beads from the gut since no fluorescent was observed in the larvae after 48h depuration. While the mortality rate increased significantly with the amount of microbeads scored per... |
| Tipo: Text |
Palavras-chave: Microplastic; Fish; Larvae; Ingestion; Survival. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00279/39057/37621.pdf |
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| Vanderplancke, Gwenaelle; Claireaux, Guy; Quazuguel, Patrick; Huelvan, Christine; Corporeau, Charlotte; Mazurais, David; Zambonino-infante, Jose-luis. |
| Since European sea bass (Dicentrarchus labrax) larvae occurred in coastal and estuarine waters at early life stages, they are likely to be exposed to reduced dissolved oxygen waters at a sensitive developmental stage. However, the effects of hypoxia at larval stage, which depend in part on fish species, remain very poorly documented in European sea bass. In the present study, the impacts of an experimental exposure to a chronic moderate hypoxia (40 % air saturation) between 30 and 38 days post-hatching on the physiological and developmental traits of European sea bass larvae were assessed. This study was based on the investigation of survival and growth rates, parameters related to energy metabolism [Citrate Synthase (CS) and Cytochrome-c Oxidase (COX)... |
| Tipo: Text |
Palavras-chave: Hypoxia; Fish larvae; Energy metabolism; Maturation. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00253/36433/35005.pdf |
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| Zambonino, Jose-luis; Claireaux, Guy; Ernande, Bruno; Quazuguel, Patrick; Severe, Armelle; Huelvan, Christine; Mazurais, David. |
| An individual's environmental history may have delayed effects on its physiology and life history at later stages in life because of irreversible plastic responses of early ontogenesis to environmental conditions. We chose a marine fish, the common sole, as a model species to study these effects, because it inhabits shallow marine areas highly exposed to environmental changes. We tested whether temperature and trophic conditions experienced during the larval stage had delayed effects on life-history traits and resistance to hypoxia at the juvenile stage. We thus examined the combined effect of global warming and hypoxia in coastal waters, which are potential stressors to many estuarine and coastal marine fishes. Elevated temperature and better trophic... |
| Tipo: Text |
Palavras-chave: Fish; Environmental programming; Climate change; Hypoxia; Nutrition. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00127/23858/21810.pdf |
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| 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 |
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| Gatesoupe, Francois-joel; Huelvan, Christine; Le Bayon, Nicolas; Le Delliou, Herve; Madec, Lauriane; Mouchel, Olivier; Quazuguel, Patrick; Mazurais, David; Zambonino-infante, Jose-luis. |
| Background The better understanding of how intestinal microbiota interacts with fish health is one of the key to sustainable aquaculture development. The present experiment aimed at correlating active microbiota associated to intestinal mucosa with Specific Growth Rate (SGR) and Hypoxia Resistance Time (HRT) in European sea bass individuals submitted to different nutritional histories: the fish were fed either standard or unbalanced diets at first feeding, and then mixed before repeating the dietary challenge in a common garden approach at the juvenile stage. Results A diet deficient in essential fatty acids (LH) lowered both SGR and HRT in sea bass, especially when the deficiency was already applied at first feeding. A protein-deficient diet with high... |
| Tipo: Text |
Palavras-chave: Host-microbe interaction; 16S rRNA; Pyrosequencing; Autochthonous bacteria; Alternative feed ingredients; Physiological status. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00356/46719/46590.pdf |
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| Delcroix, Jeremy; Gatesoupe, F.j.; Desbruyeres, Elisabeth; Huelvan, Christine; Le Delliou, Herve; Le Gall, Marie-madeleine; Quazuguel, Patrick; Mazurais, David; Zambonino-infante, Jose-luis. |
| Protein hydrolysate is an essential component of dry starter diets for fish larvae, as promoting healthy development. Peptides are also suitable substrates for many intestinal microbes. Five experimental diets were compared to a control diet (CONT) supplemented with a commercial fish protein hydrolysate. Each diet contained one marine protein hydrolysate, which differed by the proportion of di- and tri-peptides, and by raw materials. Two diets (HYD4 and HYD5) stimulated larval growth compared with CONT. Two other diets (HYD1 and HYD2) yielded inferior growth. HYD1 was detrimental for survival, which was associated with an up-regulation of genes involved in inflammation and antioxidative responses, while the gene coding for osteocalcin was down-regulated in... |
| Tipo: Text |
Palavras-chave: Compound diets; Denaturing gradient gel electrophoresis; Digestive enzymes; Gene expression; Gut maturation; Peptides. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00197/30865/29268.pdf |
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| Dosdat, Antoine; Metailler, Robert; Desbruyeres, Elisabeth; Huelvan, Christine. |
| Brown trout and rainbow trout (average weight 100 g) were reared in fresh water at 12 degrees C under the same conditions before transferring brown trout to sea water, in order to compare phosphorus utilisation in both species. Apparent phosphorus availability, orthophosphate excretion and phosphorus accretion in the fish were directly determined. Thus, actual phosphorus mass balance was built. Rainbow trout raised in fresh water had a higher phosphorus retention coefficient (maximum 50 %) than brown trout reared in fresh water (maximum 45 %). Transferring brown trout to sea water induced a reduction in phosphorus retention (maximum 39 %), Orthophosphate excretion, ranging 7-20 mg phosphorus per kg wet weight per day, represented 10-20 % of ingested... |
| Tipo: Text |
Palavras-chave: Oncorhynchus mykiss; Salmo trutta; Excrétion; Digestibilité; Phosphore; Oncorhynchus mykiss; Salmo trutta; Excretion; Digestibility; Phosphorus intake. |
| Ano: 1998 |
URL: https://archimer.ifremer.fr/doc/1998/publication-876.pdf |
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| Cadiz, L.; Desmarais, E.; Servili, Arianna; Quazuguel, Patrick; Madec, Lauriane; Huelvan, Christine; Andersen, O.; Zambonino-infante, Jose-luis; Mazurais, David. |
| Hemoglobins (Hb) play a critical role in satisfying the oxygen demand of vertebrate aerobic metabolism. The present study reports the characterization of the European sea bass (Dicentrarchus labrax) Hb genes, including genomic organization, phylogeny, and spatio-temporal gene expression. These Hb genes are divided into two unlinked clusters, the “MN” cluster containing eleven genes (five Hbα genes named MN-Hbα1-5 and six Hbβ genes named MN-Hbβ1–6) and the “LA” cluster consisting of three genes (two Hbα genes named LA-Hbα1-2 and one Hbβ gene named LA-Hbβ1). Comparative analysis of Hb amino acid sequences indicates that most of the important amino acid residues involved in hemoglobin-oxygen binding, particularly in the Bohr and Root effects, are generally... |
| Tipo: Text |
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| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00382/49349/49787.pdf |
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| Gatesoupe, Joel; Huelvan, Christine; Le Bayon, Nicolas; Severe, Armelle; Aasen, Inga Marie; Degnes, Kristin F.; Mazurais, David; Panserat, Stephane; Zambonino, Jose-luis; Kaushik, Sadasivam. |
| The aim of this work was to investigate the catabolic process of three kinds of dietary carbohydrates in the gut of sea bass juveniles, with the possible contribution of the intestinal microbiota to the nutrition of the host, and the subsequent effects on intermediary metabolism. A first diet contained waxy maize (99% amylopectin), a highly digestible form of starch. A second diet was less quickly digestible due to its high amylose content of resistant starch. Two other diets contained fibre instead of starch, either only cellulose as control, or also other non-starch polysaccharides brought by lupin meal. The effect of the diets on the host confirmed previous results, with the stimulation of glucose storage in the liver in sea bass fed the starchy diets,... |
| Tipo: Text |
Palavras-chave: Digestive enzymes; Glucose metabolism; Intestinal microbiota; Viscerosomatic index; Gene expression; Metabolite analyses; Vegetable feedstuffs. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00166/27763/25944.pdf |
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| Darias, Maria J.; Mazurais, David; Koumoundouros, Giorgos; Glynatsi, Nomiki; Christodoulopoulou, Stavroula; Huelvan, Christine; Desbruyeres, Elisabeth; Le Gall, Marie-madeleine; Quazuguel, Patrick; Cahu, Chantal; Zambonino-infante, Jose L.. |
| The influence of dietary vitamin D-3 (VD3) on survival, growth and morphogenesis during the larval development of European sea bass (Dicentrarchus labrax) was evaluated until 45 days post hatching. Diets contained 4% of the standard vitamin mix (VM) recommended by the National Research Council (NRC) and incorporated 0, 19.2, 38.4, or 140 IU of VD3 per gram of diet to give VD-0, VD-1, VD-2 and VD-3 dietary treatments, respectively. The present study revealed for the first time an impact of dietary VD3 on the sea bass digestive system ontogenesis that consequently conditioned the ossification process and morphogenesis. All dietary VD3 levels were in the "adequate range" based on larval survival. Nevertheless, growth, intestinal maturation and ossification at... |
| Tipo: Text |
Palavras-chave: Fish larvae; Ossification; Malformations; Vitamin D; Digestive system; Gene expression. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00000/11147/7849.pdf |
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| Zouiten, Dora; Ben Khemis, Ines; Masmoudi, Ahmed Slaheddin; Huelvan, Christine; Cahu, Chantal. |
| The quality of development in intensive or mesocosm hatchery-reared Dicentrarchus labrax larvae was investigated using physiological indicators assessing ontogeny. Larvae were reared in intensive (120 L tanks) and in mesocosm systems (20 m(3) enclosures) with the same feeding sequence, excluding the wild zooplankton naturally available in mesocosms. Faster growth was recorded since early development [16 day after hatching (DAH)] in the mesocosm. Maturation of the digestive system also occurred earlier as indicated by the higher amylase secretion ratios, the intestinal maturation index (alkaline phosphatase/leucine-alanine peptidase and aminopeptidase-N/leucine-alanine peptidase ratios) and the more developed intestinal epithelium at 23 DAH. Nevertheless,... |
| Tipo: Text |
Palavras-chave: Fish larvae; Hatchery; Mesocosm; Ontogenesis; Enzyme; Skeletogenesis. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00051/16225/14064.pdf |
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| Registros recuperados: 17 | |
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