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| Registros recuperados: 251 | |
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| Robles, R.; Sorgeloos, P.; Van Duffel, H.; Nelis, H.J.. |
| With the intensification of aquaculture production systems, mass mortality of fish and shellfish caused by bacterial infections is not unusual. Chemotherapy (treatment of infection with antimicrobial compounds) and immunoprophylaxis (vaccination and immunostimulation), are the common methods applied to treat bacterial infections. In search of an efficient and cost-effective delivery route for antimicrobial agents and/or immuno-prophylactics to treat fish and shrimp larvae, the use of live prey organisms bioencapsulated with drugs has been explored. This article provides an update on the use of the bioencapsulation technique in aquaculture. |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1998 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=315 |
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| Han, K.; Geurden, I.; Sorgeloos, P.. |
| Three separate enrichment trials compared the <i>n</i>-3 highly unsaturated fatty acid (HUFA) levels in <i>Artemia franciscana</i> nauplii (Great Salt Lake, USA) as a function of the <i>n</i>-3 HUFA level in the emulsion (30% and 50%), the enrichment dose (0.05, 0.1, 0.2, 0.3 and 0.4 g1-1) and the degree of dilution of a high HUFA emulsion with an <i>n</i> -3 HUFA-free emulsion (100/0, 50/50, 25/75, 12.5/87.5 and 0/100, HUFA-rich/HUFA-free, w/w). The standard emulsions were distributed by the International Council for the Exploration of the Sea, Working Group on the Mass Rearing of Juvenile Fish (ICES). After the 48-h enrichment, the content of docosahexaenoic acid (DHA), eicosapentaenoic acid EPA) and total... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Experimental culture; Feeding experiments; Polyunsaturated fatty acids; Zooplankton culture; Artemia; Artemia franciscana. |
| Ano: 2000 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=42 |
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| Lavens, P.; Sorgeloos, P.. |
| It is generally accepted, that a major constraint in the further development of marine fish and crustacean aquaculture, is the variable quality of eggs and larvae used for the hatchery-production of fry. Nonetheless, valid criteria to evaluate optimal egg quality have not been identified yet. Instead, particular indicators, are used, e.g. the fertilization and hatching rate, overall culture success during the first rearing period, etc., but these are not totally objective because hatchery-specific conditions may interfere. The biochemical composition of the egg may be one of the possible determinants of egg quality, which can be evaluated on a more objectie basis. In this respect, studied have been initiated to analyze in freshly-released eggs, the levels... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aquaculture techniques; Biochemical composition; Crustacean culture; Eggs; Fatty acids; Fish culture; Hatcheries; Quality control; Vitamin C. |
| Ano: 1991 |
URL: http://www.vliz.be/imisdocs/publications/262328.pdf |
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| Sorgeloos, P.; Baeza-Mesa, M.; Benijts, F.; Persoone, G.. |
| In the framework of research on mariculture at the "Institute for Marine Scientific Research" (IZWO), the "Laboratory for Biological Research in Environmental Pollution" at the State University of Ghent, is focusing on culturing problems of the brine shrimp <i>Artemia salina</i>. The following research topics are discussed: 1. The mechanisms leading to the hatching of <i>Artemia</i> cysts are reviewed and complemented with new data on the sensitivity to light and temperature, and on the reversibility of the development within the cyst. The possible influences of the collecting, sorting, and packaging processes on the quality of the cysts are discussed. 2. Since in the literature much confusion exists concerning the mechanisms... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1976 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3533 |
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| Tzovenis, I.; De Pauw, N.; Sorgeloos, P.. |
| The culture of <i>Isochrysis</i> aff. <i>galbana</i> Green (T-ISO) in hatcheries is promoted for its high docosahexaenoic acid (DHA) content which favours the successful rearing of aquatic larvae. In this paper we identified the need for well-defined culture conditions of microalgae if sufficient DHA content is the final goal. Using photoperiods of 24:0h, 12:12h and 16:8h L/D combined with photon flux densities (PFD's) of 110, 220 and 460 µE m<sup>-2</sup> s<sup>-1</sup>, batch cultures of T-ISO were sampled for DHA content in the exponential as well as the post-exponential (light-limited) growth phase. The various light regimes resulted in differences of DHA content of T-ISO revealing influences and strong... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rhodomonas salina. |
| Ano: 1997 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2979 |
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| Sorgeloos, P.; Persoone, G.. |
| Although extensive fundamental research has been performed on the brine shrimp, the yields from hatching and culturing this organism which is widely used in mariculture, can be greatly improved. By exposing the immersed cysts to light and by using a new type of hatching cylinder and separator box, greater hatching and separation efficiencies can be obtained. Controlled mass culture of brine shrimp larvae to the adult stage has been extremely difficult until now; the literature on the subject is reviewed and a new technique of high density culturing at the pilot-stage is described. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemia salina. |
| Ano: 1975 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3511 |
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| Gapasin, R.S.J.; Nelis, H.; Chair, M.; Sorgeloos, P.. |
| Assimilation levels of the antibacterials trimethoprim (TMP) and sulfamethoxazole (SMX) in sea bass (<i>Dicentrarchus labrax</i>) fry tissue administered orally were investigated. A 1:5 TMP and SMX combination incorporated in oil emulsion (Selco) at 20% and 40% concentrations (w/w) were bioencapsulated in <i>Artemia</i> (Instar II) nauplii. Chemotherapeutics-loaded ('medicated') nauplii were fed to the sea bass fry and drug concentration in the tissue were analysed by high-performance liquid chromatography (HPLC). Fish fed 40% 'medicated' <i>Artemia</i> assimilated significantly higher levels of chemotherapeutics compared with those fed 20% 'medicated' <i>Artemia</i> . Chemotherapeutics given at 40% reached... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dicentrarchus labrax (Linnaeus; 1758) [Bass]. |
| Ano: 1996 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2964 |
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| Van Stappen, G.; Lavens, P.; Sorgeloos, P.. |
| Short-term treatment with peroxide solutions has been tested as a chemical way to break the diapause of <i>Artemia</i> cysts of different species and geographical strains. The methodology was further standardized by analyzing the impact of the cyst hydration level and the application conditions (concentration, duration, temperature) on the hatching percentage. The peroxide treatment was most effective in deactivating diapause when applied on fully hydrated cysts, and showed a quantitative nature: a maximal positive effect was obtained for specific combinations of peroxide concentration and exposure time. The peroxide effect was preserved after processing and storage of treated cysts. The biochemical mechanisms possibly involved in induction and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemia. |
| Ano: 1998 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=321 |
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| Bruggeman, E.; Sorgeloos, P.; Vanhaecke, P.. |
| Because bleaching powder is the cheapest source of hypochlorite in many countries of the world, a decapsulation procedure has been worked out in which technical calciumhypochlorite Ca(OCl)<sub>2</sub> is utilized.A standard procedure has been developed for the deactivation of the chlorine residues adsorbed on the decapsulated cysts. Proper dehydration and storage of the decapsulated cysts assure maximum viability of the embryos in diapause. A prototype system for routine decapsulation and processing of large quantities of cysts is proposed.Beneficial effects of the decapsulation process on both the hatching percentage and the individual dry weight of the hatched nauplii are discussed in detail. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemia. |
| Ano: 1980 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3611 |
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| Van Sprang, P.; Léger, P.; Sorgeloos, P.. |
| A new test system is described for the evaluation of toxic levels of liposoluble products in the aquatic food chain using <i>Artemia</i> and <i>Mysidopsis bahia</i> (M.) as experimental animals. For this, freshly released juveniles (<24h old) of <i>M. bahia</i> are transferred to the experimental bioassay test system, cultured under standard conditions and fed 24h old purposely contaminated <i>Artemia</i> nauplii. After 11 days, data on survival, reproductive characteristics, individual length and dry weight are recorded and treated statistically. |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1991 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2910 |
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| Triantaphyllidis, G.; Criel, G.R.J.; Abatzopoulos, T.J.; Sorgeloos, P.. |
| A detailed morphological and allometrical study was performed with adult males and females of eleven bisexual populations of brine shrimp <i>Artemia</i> . Multivariate procedures, discriminant and cluster analysis, allowed to separate and group together populations which exhibit great genetic similarities. The eleven populations studied form four distinct groups: the <i>A. franciscana</i> group, the <i>A. tunisiana</i> group, the <i>A. urminiana</i> group and a broader group which includes Eastern Old World populations. Scanning electron microscopy revealed differences in the male genital organs of an <i>A. tunisiana</i> population by lacking a medial protuberance in the base of the penes while... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemia. |
| Ano: 1997 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2973 |
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| Registros recuperados: 251 | |
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