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Registros recuperados: 6
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A new artificial diet for the early weaning of seabass (<i>Dicentrarchus labrax</i>) larvae OMA
Devresse, B.; Candreva, P.; Léger, P.; Sorgeloos, P..
The weaning of marine fish larvae is a critical step in larval rearing. The successful transition from live food to an artificial feed depends among others on the quality of the dry feed used (e.g. freshness of ingredients, digestibility, quality of the formulation) and the larvae themselves (e.g. age, behaviour towards artificial diets, development of the digestive tract, efficiency of certain metabolic pathways). The present study shows the results obtained with a new artificial diet formulated for the weaning phase of marine fish larvae (<i>Dicentrarchus labrax</i>) in commercial hatcheries.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Artificial feeding; Feed composition; Fish culture; Fish larvae; Hatcheries; Dicentrarchus labrax [Bass].
Ano: 1991 URL: http://www.vliz.be/imisdocs/publications/262322.pdf
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Comparison of the fatty acid profile of wild caught fingerlings and yolk sac sea bass (<i>Dicentrarchus labrax</i>) larvae with cultured healthy larvae and larvae suffering from whirling disease OMA
Corneille, S.; Agius, C.; Ollevier, F.P..
Analysis of the fatty acids of total lipids of wild fingerlings (1-4 g) of sea bass (<i>Dicentrarchus labrax</i>) caught off the northcoast of France shows that more than 30% of total fatty acids consists of the two essential fatty acids eiopentaenoic (C20:5 n-3) and docosahaenoic (C22:6 n-3) acids. One- and three-day old yolk sac larvae have even higher amounts of these two important fatty acids (about 40%). On the other hand, laboratory-reared 60-day old larvae had much lower concentrations of C20:5 n-3 (4% of total fatty acids) and C22:6 n-3 (5,5% of total fatty acids). In larvae suffering from whirling or spinning disease the percentage of C20:5 n-3 was only 2,8% and only traces of C22:6 n-3 were found. These results emphasize the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dicentrarchus labrax [Bass].
Ano: 1990 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3059
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Early postlarval fish in the hyperbenthos of the Dutch Delta (south-west Netherlands) OMA
Beyst, B.; Mees, J.; Cattrijsse, A..
Early (post)larval fish constitute a significant part of the temporary hyperbenthos, i.e. of the fauna living in the lower reaches of the water column close to the substratum. Information on the densities and spatial and temporal variations of these stages, as well as on their lengths at the moment of occurrence, can be an important contribution to the knowledge of their dispersion, migrations and to the identification of possible bottlenecks in their recruitment. Therefore the hyperbenthos of the Voordelta, a shallow coastal zone in front of the Dutch Delta, as well as that of the subtidal channels and the intertidal brackish marsh creeks of the Westerschelde Estuary, was sampled monthly during one year by means of a sledge and a stow net. A total of 37...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Community composition; Deltas; Dominant species; Ecological distribution; Estuaries; Intertidal environment; Juveniles; Marine fish; Nursery grounds; Pleuronectes; Population density; Salt marshes; Sprattus sprattus; Wetlands; Zoobenthos; Clupea harengus; Dicentrarchus labrax [Bass]; Solea solea [Sole].
Ano: 1999 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3979
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Live-food mediated drug delivery as a tool for disease treatment in larviculture: 2. A case study with European seabass OMA
Chair, M.; Romdhane, M.S.; Dehasque, M.; Nelis, H.; De Leenheer, A.P.; Sorgeloos, P..
The purpose of this study is to investigate the possibility of oral delivery of the antibiotics Trimethoprim (TMP) and Sulfamethoxazole (SMX) to marine fish larvae through incorporation of these antibiotics into the live food organism <i>Artemia</i>. SMX and TMP were selected for their wide range action against gram negative pathogenic bacteria and because of their limited solubility in seawater. Ormetoprim-Sulfadimethoxine (brand name Romet-30) is a new combination of a similar antimicrobial drug used in aquaculture. Diseased penaeid larvae fed Romet-30 through the food chain exhibited greater survival than the untreated ones. In an earlier study Verpraet have described a technique for bioencapsulating high doses of more than 500 mu g TMP +...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antibiotics; Aquaculture techniques; Disease control; Fish culture; Fish larvae; Food additives; Food organisms; Dicentrarchus labrax [Bass].
Ano: 1991 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2805
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(n-3) HUFA composition of freshly spawned eggs from European seabass (<i>Dicentrarchus labrax</i>), seabream (<i>Sparus aurata</i>) and red seabream (<i>Pagrus major</i>) collected in different hatcheries OMA
Komis, A.; Léger, P.; Sorgeloos, P..
The biochemical composition of fish eggs is often used as an indicator for assessing the nutritional requirements of aquaculture species during their larval stages. Fatty acids of the (n-3) HUFA type have proven to play a critical role in providing good growth, survival and stress resistance in marine fish larvae. Hence, analyzing these fatty acids in fish eggs may provide interesting data on the requirements for those essential nutrients. By comparing the analyses of wild versus broodstock fish eggs differences may appear, possibly explaining differences in egg quality. Intra-spawning-season differences may further appear by following fatty acid profiles in the course of time. Finally, the influence of broodstock nutritionon egg composition may be another...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Comparative studies; Fatty acids; Fish culture; Fish eggs; Hatcheries; Induced breeding; Dicentrarchus labrax [Bass]; Pagrus major; Sparus aurata [Gilthead].
Ano: 1991 URL: http://www.vliz.be/imisdocs/publications/262325.pdf
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Preliminary results on the nutritional evaluation of omega-3-HUFA-enriched <i>Artemia</i> nauplii for larvae of the sea bass, <i>Dicentrarchus labrax</i> OMA
Van Ballaer, E.; Amat, F.; Hontoria, F.; Léger, P.; Sorgeloos, P..
Freshly hatched San Pablo Bay and Great Salt Lake <i>Artemia</i> nauplii (omega-3-HUFA-poor) and enriched meta-nauplii (omega-3-HUFA-enriched)were compared to reference <i>Artemia</i> nauplii (omega-3-HUFA-rich) as a food source for the larvae of the sea bass, <i>Dicentrarchus labrax</i>. Significant differences in survival and biomass production between the treatments could be attributed to the omega-3-HUFA content of the food. A delayed mortality in fish larvae fed the Great Salt Lake <i>Artemia</i> is suspected to be caused by a high level of alpha-BHC in this <i>Artemia</i> source. Growth was not significantly different between the treatments, most probably due to the large variation in growth...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Artificial feeding; Fish culture; Fish larvae; Nutritive value; Artemia salina; Dicentrarchus labrax [Bass].
Ano: 1985 URL: http://www.vliz.be/imisdocs/publications/261899.pdf
Registros recuperados: 6
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