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| Registros recuperados: 501 | |
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| Pagand, Pascal. |
| When facing the increasing development of aquaculture, farming in recycled water is an alternative to limit the impact on the environment: farming produces a lower amount of wastes but of higher concentration which can be treated. The goal of this thesis is to evaluate the efficiency of high rate algal lagooning/ponding (HRAP) for the treatment of marine fish culture effluents. Also, this study utilizes wastes from Dicentrarchus labrax grown in Ifremer's recycled waters station. The first step shows the particularities linked to recycled water farming effluents. They are characterized by low particle and organic substance concentrations as well as strong dissolved inorganic nitrogen (DIN) and phosphorus (DIP) concentrations. Furthermore, nitrogen is mainly... |
| Tipo: Text |
Palavras-chave: Fish; High rate algal pond; Aquaculture; Alga; Water treatment; Recirculating effluents. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/1999/these-1748.pdf |
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| Leonard, Noemie. |
| Recirculation of the water of fish rearing systems requires a biological treatment based on the nitrifying activity of autotrophic bacteria. In parallel heterotrophic bacterial populations utilise the organic substrate, produced by the fish, to grow. Opposite to the autotrophic populations, the heterotrophic bacteria (1) have a quick growth and (2) might contain fish pathogenic strains. The main aim was to characterise the heterotrophic bacteria populations ?.nd to understand (1) which parameters do control the dynamics of their populations and (2) their influence on the quality of the recirculating water. In a rearing system, the heterotrophic bacterial populations are stable in number and in genus, for a given operating mode. The bacteria are either... |
| Tipo: Text |
Palavras-chave: Carbon; Gills; Bacterium; Humics substances; Fish; Ozone; Aquiculture; Carbone; Branchies; Bacterie; Substances humiques; Poisson; Ozone; Aquaculture. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/2000/these-1728.pdf |
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| Thebault, Marie-t; Izem, Lahoucine; Leroy, Jean Paul; Gobin, Eric; Charrier, Gregory; Raffin, Jean-paul. |
| AMP-deaminase activity was measured in white muscle from a wide range of fish, including one cyclostome, 13 chondrosteans, and one teleost to elucidate the pattern of the AMP-deaminase activity in white muscle of fish. Compared to a mammalian (rat) muscle extract, low enzyme activities are found in the cyclostome and two elasmobranchs from two families (Scyliorhinidae, Hexanchidae). In contrast, higher AMP-deaminase activities, similar to mammals, are expressed in Squalidae, all families of skates, Chimaeridae and in the teleostean fish. We then compared AMP-deaminase activities in red and white muscles from two representative elasmobranch fish, the dogfish (Scyliorhinus canicula) and the thornback ray (Raja clavata). The fibre type composition and... |
| Tipo: Text |
Palavras-chave: White fibres; Red fibres; Muscle; Histology; Fish; Evolution; Elasmobranch; AMP deaminase. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-635.pdf |
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| Follesa, Maria C.; Marongiu, Martina F.; Zupa, Walter; Bellodi, Andrea; Cau, Alessandro; Cannas, Rita; Colloca, Francesco; Djurovic, Mirko; Isajlovic, Igor; Jadaud, Angelique; Manfredi, Chiara; Mulas, Antonello; Peristeraki, Panagiota; Porcu, Cristina; Ramirez-amaro, Sergio; Salmeron Jimenez, Francisca; Serena, Fabrizio; Sion, Letizia; Thasitis, Ioannis; Cau, Angelo; Carbonara, Pierluigi. |
| Thanks to the availability of the MEDITS survey data, a standardized picture of the occurrence and abundance of demersal Chondrichthyes in the northern Mediterranean has been obtained. During the spring-summer period between 2012 and 2015, 41 Chondrichthyes, including 18 sharks (5 orders and 11 families). 22 batoids (3 orders and 4 families) and 1 chimaera, were detected from several geographical sub-areas (GSAs) established by the General Fisheries Commission for the Mediterranean. Batoids had a preferential distribution on the continental shelf (10-200 m depth). while shark species were more frequent on the slope (200-800 m depth). Only three species, the Carcharhiniformes Galeus melastomus and Scyliorhinus canicida and the Torpediniformes Torpedo... |
| Tipo: Text |
Palavras-chave: Fish; Chondrichthyes; Bottom trawl surveys; Distribution; Abundance; Mediterranean. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00600/71220/69591.pdf |
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| Santigosa, Ester; Geay, Florian; Tonon, Thierry; Le Delliou, Herve; Kuhl, Heiner; Reinhardt, Richard; Corcos, Laurent; Cahu, Chantal; Zambonino, Jose-luis; Mazurais, David. |
| Fish are the main source of the n-3 highly unsaturated fatty acids, which are crucial for human health. Their synthesis from C18 precursors is mediated by desaturases and elongases, but the activity of these enzymes has not been conclusively established in marine fish species. This study reports the cloning, tissue expression, and functional characterization of a sea bass (Dicentrarchus labrax L.) Δ6-desaturase and one of its splicing variants. Two cDNAs with open reading frames of 1,346 and 1,354 bp were cloned and named D6D and D6D-V, respectively. Both deduced protein sequences (445 and 387 amino acids, respectively) contained two transmembrane regions and the N-terminal cytochrome b5 domain with the HPGG motif characteristic of microsomal desaturases.... |
| Tipo: Text |
Palavras-chave: Sea bass (Dicentrarchus labrax); Desaturase; HUFA biosynthesis; Fish; EPA. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00023/13470/10477.pdf |
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| Cheret, Romuald; Chapleau, Nicolas; Delbarre Ladrat, Christine; Verrez-bagnis, Veronique; De Lamballerie, Marie. |
| High pressure is an innovative non-thermal food-preservation technology. We studied the effect of high-pressure treatment up-to 500 MPa for 5 min on physical characteristics of sea bass fillets after 0, 7, and 14 d of refrigerated storage.. Color results exhibited an increase of lightness and a slight change of hue, which might be imperceptible in cooked fish. High-pressure treatment induced a decrease of exudation and water-holding capacity Pressure treatment above 300 MPa provoked higher fish hardness after storage than in untreated sample, proving the ability of high pressure to improve textural, quality of chilled, stored fish fillet. These assessments were corroborated with microstructure observations. We showed that high-pressure treatment at 500 MPa... |
| Tipo: Text |
Palavras-chave: Preservation; Microstructure; Texture profile analysis; High pressure; Fish. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-734.pdf |
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| Mahe, Kelig; Bellail, Robert; Dufour, Jean-louis; Boiron-leroy, Anne; Dimeet, Joel; Duhamel, Erwan; Elleboode, Romain; Felix, Jerome; Grellier, Patrick; Huet, Jerome; Labastie, Jacques; Le Roy, Didier; Lizaud, Oceann; Manten, Marie-line; Martin, Stephane; Metral, Luisa; Nedelec, Daniel; Verin, Yves; Badts, Vincent. |
| This document presents all the techniques used in routine by Ifremer to estimate the age of fish from the calcified piece. The procedure for estimating age describes each technical stage from the taking of the calcified piece through to the supplying of key sizes/ages to the European work groups. This procedure is specific to each species and even each population of fish. |
| Tipo: Text |
Palavras-chave: Poisson; TNPC; Préparation; Procédure; Age; Ecaille; Illicium; Otolithe; Sclérochronologie; Fish; TNPC; Preparation; Procedure; Age; Scale; Illicium; Otolith; Sclerochronology. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00000/7294/rapport-7294.pdf |
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| Romeo, Michele; Mathieu, A; Gnassia-barelli, M; Romana, Louis-alexandre; Lafaurie, M. |
| Trace metal concentrations (Cd, Cu, Fe, Zn) and total-calcium content were measured in the gills of 2 marine fish (painted comber Serranus cabrilla and striped mullet Mullus barbatus) sampled in different stations in the cove of Cortiou, where the outlet collecting the waste waters of Marseille, France, is situated (NW Mediterranean). In parallel, the activity rates of some phase I enzymes (ethoxyresorufin-0-dealkylase, EROD; pentoxyresorufin-0-dealkylase, PROD) and phase II enzymes (glutathione-S-transferase, GST) were determined in the livers of both species of fish. Cadmium and copper concentrations were highly variable for both species. Two sampling stations situated in the dispersion area of waste waters seemed affected by chemical pollution. At these... |
| Tipo: Text |
Palavras-chave: Heavy metal; Biotransformation enzymes; Fish. |
| Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/00196/30736/29393.pdf |
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| Biscoito, M; Almeida, A; Segonzac, Michel. |
| A preliminary description of the biology of the Saldanha hydrothermal field in the Mid-Atlantic Ridge (36 degrees 34'N, 32 degrees 26'W, 2200 m) is given, based on direct observation, video images and samples. Venting occurs mainly in a diffuse way through sediment, but hydrothermal fluid discharges are visible through centimeter-long orifices, scattered on the sediment, over an area of approximately 400 m(2), at depths between 2,200 and 2,220 metres. Emitted fluids are transparent, with a temperature of 7-9 degrees C. An almost complete absence of macro- and megafauna around the venting orifices was found. The only vent invertebrate identified was the gastropod Phymorhynchus sp., with only two juvenile specimens caught. A careful examination of the images... |
| Tipo: Text |
Palavras-chave: New records; Antimora; Acanthonus; Fish; Sponge; Bathyal megafauna; Gastropoda; Fauna assemblage; Mid Atlantic Ridge; Hydrothermal vents. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-3610.pdf |
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| Muller-feuga, Arnaud. |
| Algae are utilized diversely in aquaculture, but their main applications are related to nutrition. They are used in toto, as a sole component or as a food additive to supply basic nutrients, color the flesh of salmonids or for other biological activities. The need for nutritional sources safer than traditional animal products has renewed interest in plants in general and algae in particular. This report deals principally with the nutritional role of microalgae in aquaculture.The larvae of molluscs, echinoderms and crustaceans as well as the live prey of some fish larvae feed on microalgae. Though attempts have been made to substitute inert particles for these micro-organisms which are difficult to produce, concentrate and store, only shrimp and live prey... |
| Tipo: Text |
Palavras-chave: Shrimp; Post larvae; Phytoplankton; Molluscs; Microalgae; Hatchery; Fish; Aquaculture. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/2000/publication-497.pdf |
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| Mille, Tiphaine; Cresson, Pierre; Chouvelon, Tiphaine; Bustamante, Paco; Brach-papa, Christophe; Bruzac, Sandrine; Rozuel, Emmanuelle; Bouchoucha, Marc. |
| Concentrations of 6 trace metals (Ag, Cd, Cu, Ni, Pb, Zn) in the muscle of 2 sharks (Galeus melastomus and Scyliorhinus canicula), 4 teleosts (Helicolenus dactylopterus, Lepidorhombus boscii, Micromesistius poutassou and Phycis blennoides) and 1 crustacean (Nephrops norvegicus) were compared between the Bay of Biscay (Atlantic Ocean) and the Gulf of Lions (Mediterranean Sea). Although average concentrations and the trace element pollution index were generally higher in the Gulf of Lions, significant differences between the two ecosystems were only found for Zn for Helicolenus dactylopterus, and for Ag and Cu for the crustacean N. norvegicus. Moreover, some relationships between trophic level or size and metal concentrations were found for these two... |
| Tipo: Text |
Palavras-chave: Inorganic elements; Contamination; Bioaccumulation; Fish; Shark; Norway lobster. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00448/55958/57497.pdf |
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| Boudry, Pierre; Chatain, Beatrice; Naciri-graven, Yamama; Lemaire, Christophe; Gerard, Andre. |
| In France, marine fish and shellfish farming is based mainly on the breeding of wild species, whose natural populations are traditionally exploited. Research programs are conducted by IFREMER, in co-operation with INRA and Universities. French research programs for the genetical improvement of marine fish and shellfish concern primarily seabass (Dicentrarchus labrax) and oysters (Ostrea edulis and Crassostrea gigas). The following programs are developed: The knowledge of wild and farmed populations. The most recent prodjects involve the highly variable microsatellite markers. Seven markers are presently available for seabass and the work is now initiated on turbot (Scophthalmus maximus). In molluscs, microsatellite markers have been developed for the... |
| Tipo: Text |
Palavras-chave: Selection; Triploid; Shellfish; Fish; Genetic. |
| Ano: 1996 |
URL: http://archimer.ifremer.fr/doc/1996/acte-3206.pdf |
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| Cresson, Pierre; Bouchoucha, Marc; Miralles, F.; Elleboode, Romain; Mahe, Kelig; Marusczak, Nicolas; Thebault, Herve; Cossa, Daniel. |
| Mercury (Hg) is one of the main chemicals currently altering Mediterranean ecosystems. Red mullet (Mullus barbatus and M. surmuletus) have been widely used as quantitative bio-indicators of chemical contamination. In this study, we reassess the ability of these species to be used as efficient bio-indicators of Hg contamination by monitoring during 18 months Hg concentrations in muscle tissue of mullet sampled from 5 French Mediterranean coastal areas. Mean concentrations ranged between 0.23 and 0.78 μg g−1 dry mass for both species. Values were consistent with expected contamination patterns of all sites except Corsica. Results confirmed that red mullets are efficient bio-indicators of Hg contamination. Nevertheless, the observed variability in Hg... |
| Tipo: Text |
Palavras-chave: Mercury; Bio-indicator; Fish; Mullus spp.; Mediterranean. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00244/35514/34083.pdf |
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| Registros recuperados: 501 | |
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