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Registros recuperados: 6
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Cofeeding of phospholipids to turbot <i>Scophthalmus maximus</i> L. larvae as a tool to reduce live food consumption OMA
Dhert, P.; González Félix, M.; Van Ryckeghem, K.; Geurden, I.; Thysen, F.; Lebegue, E.; Lavens, P.; Sorgeloos, P..
The possible benefits of feeding a formulated diet, together with <i>Artemia</i> , to first-feeding turbot larvae were investigated. Five dietary regimes were used: control ( <i>Artemia</i> only), cofeeding with a diet rich in phospholipid (PL) from bovine brain, cofeeding with a diet rich in free fatty acids (FFA) from the same source, cofeeding with a commercial diet (Lansy A2), and a formulated feed only (PL-rich diet). All treatments with artificial diets and the control treatment that received <i>Artemia</i> exclusively gave a similar survival rate of the fish at day 29. Cofeeding with artificial diets resulted in a lower growth rate than the control treatment. Cofeeding the larvae with PL-rich or FFA-rich diets did...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquaculture techniques; Feeding experiments; Fish culture; Fish larvae; Food organisms; Scophthalmus maximus; Artemia.
Ano: 1999 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=4014
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Ionic composition of endolymph in teleosts: Origin and importance of endolymph alkalinity ArchiMer
Payan, P; Kossmann, Hans; Watrin, A; Mayer-gostan, N; Boeuf, Gilles.
Ionic (Na+, K+, Cl-, PO43-, pH), total CO2, total calcium and protein concentrations in the plasma and endolymph of the inner ear were compared in trout Oncorhynchus mykiss and turbot Scophthalmus maximus. In both species, saccular endolymph was characterized by high levels of K+ and total CO2 and in trout by an alkaline pH, The kinetic characteristics of proton secretion across the saccular epithelium of trout were investigated using a titration technique in which isolated saccules were mounted as closed sacs. The rate of proton secretion depends strongly on the pH of the Ringer's solution and secretion stops at a pH below 7.2, Proton secretion is driven by an energy-dependent mechanism involving basolateral ouabain-sensitive Na+/K+ exchangers. Proton...
Tipo: Text Palavras-chave: Teleost; Inner ear; Saccular epithelium; Proton secretion; Otolith; Biocalcification; Trout; Oncorhynchus mykiss; Turbot; Scophthalmus maximus.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/00336/44695/44987.pdf
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Long-term ammonia exposure of turbot: effects on plasma parameters ArchiMer
Person, Jeannine; Lamers, A; Le Roux, Annick; Severe, Armelle; Boeuf, Gilles; Mayer Gostan, N.
Turbot juveniles were exposed to four ammonia concentrations [0.17 (L), 0.34 (M), 0.73 (MH) and 0.88 (H) mgl(-1) NH3-N] for different exposure durations (28 days minimum to 84 days). Their physiological status and growth performances were compared to a control group [0.004 (C) mgl(-1) NH3-N]. No growth was observed in the H group, and by day 57, mass increase in the MH group was only 15% of that in group C. During the first month growth in the L group was similar to that in control group while it was lower (33%) in the M group; afterwards the L and M groups had a similar growth (half that of controls). Accumulation of total ammonia nitrogen (TA-N) in plasma was dependent on ambient ammonia concentrations. Plasma urea levels in ammonia-exposed fish were...
Tipo: Text Palavras-chave: Urea; Total ammonia nitrogen; Scophthalmus maximus; Ion regulation; Cortisol; Chronic toxicity.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/2003/publication-618.pdf
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Protein digestion in juvenile turbot (<i>Scophthalmus maximus</i>) and effects of dietary administration of <i>Vibrio proteolyticus</i> OMA
De Schrijver, R.; Ollevier, F.P..
The trial was made to study the protein digestion in juvenile turbot during passage of digesta from stomach to rectum. Moreover, diet supplementation with the potential probiotic bacteria, <i>Vibrio proteolyticus</i>, was evaluated with regard to protein digestion. For a 3-week period, fish (25-30 g) were fed by oral intubation and received either a liquid mixture consisting of 40% nonpurified control diet and 60% water or this mixture supplemented with 10 <sup>10</sup> viable <i>V. proteolyticus</i> ml <sup>-1</sup>. Daily dry matter was 1.5% body weight. As digesta progressed from the stomach to the foregut, hindgut and rectum, the increase in apparent nitrogen digestibility was accompanied by higher...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquaculture; Diets; Digestibility; Digestion; Feeding experiments; Fish culture; Food conversion; Nitrogen; Probiotics; Probiotics; Proteins; Scophthalmus maximus; Stomach; Scophthalmus maximus; Vibrio proteolyticus.
Ano: 2000 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=9593
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Search for beneficial bacterial strains for turbot (<i>Scophthalmus maximus</i> L.) larviculture OMA
Huys, L.; Dhert, P.; Robles, R.; Ollevier, F.P.; Sorgeloos, P.; Swings, J..
The aerobic bacterial flora in the gut of turbot larvae and their influence on larval survival was examined. Two turbot experiments were run with six replicates each time. Large variation, from 0% up to 44%, was observed in the survival percentage of turbot larvae. There was no correlation between the number of bacteria present in the gut of turbot larvae and the larval survival rate. During both experiments, all replicates followed nearly the same rate of bacterial development in the gut of turbot larvae going from circa 10<sup>2</sup> CFU larva<sup>-1</sup> just before first feeding at day 3 post hatch to 10<sup>5</sup> CFU larva<sup>-1</sup> at day 9 post hatch.In total, 127 bacterial isolates from 12...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aerobic bacteria; Aquaculture; Commensals; Digestive system; Fish culture; Fish larvae; Gastrointestinal tract; Microorganisms; Rearing; Scophthalmus maximus; Survival; Bacteria; Scophthalmus maximus; Vibrio mediterranei.
Ano: 2001 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=5720
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Sperm features in turbot (Scophthalmus maximus): a comparison with other freshwater and marine fish species ArchiMer
Suquet, Marc; Billard, Roland; Cosson, Jacky; Dorange, Germaine; Chauvaud, Laurent; Mugnier, Chantal; Fauvel, Christian.
This paper presents some features of turbot sperm and compares them with data reported in the literature on other freshwater and marine fish. In captivity, turbot spermiation period lasts 6 months. When compared to other fish species, turbot males are characterized by low values of maximum gonadosomatic index (0.6-0.8%) and are poor sperm producers in terms of volume (0.2-2.2 ml), concentration (0.7-11.0 x 10(9) spermatozoa/ml) and total sperm number released per stripping (0.2-12.0 x 10(9) spermatozoa). Compared to most freshwater species, the duration of cell movement is long (1-17 min). The spermatozoon of turbot can be considered to be of a primitive type. A very high protein content (8.8 mg/ml) is found in the seminal fluid of turbot. Increasing...
Tipo: Text Palavras-chave: Scophthalmus maximus; Turbot; Biologie du sperme; Liquide séminal; Mobilité du spermatozoïde; Morphologie du spermatozoïde; Poisson marin; Scophthalmus maximus; Turbot; Sperm biology; Seminal fluid; Sperm motility; Sperm morphology; Marine fish.
Ano: 1994 URL: http://archimer.ifremer.fr/doc/00188/29893/28334.pdf
Registros recuperados: 6
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