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| Registros recuperados: 28 | |
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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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| Holmefjord, I.; Gulbrandsen, J.; Lein, I.; Refstie, T.; Léger, P.; Harboe, T.; Huse, I.; Sorgeloos, P.; Bolla, S.; Olsen, Y.; Reitan, K.I.; Vadstein, O.; Øie, G.; Danielsberg, A.. |
| The larval stage is regarded to be the main bottleneck of halibut production. Halibut eggs were obtained from captive broodstock both by stripping and by natural spawning. Artificial photoperiods were used to increase the total spawning season. Yolk sac larvae are presently produced either in small stagnant units or in large flow through systems. A major consideration is to avoid stress of the larvae, caused by mechanical disturbances of the larvae and by high bacterial load or high ammonia levels in the water.The experimentation showed that halibut larvae began to ingest algae earlier than rotifers <i>Brachionus</i> sp. Supplementation of algae to first feeding tanks resulted in enhanced survival and growth rate of the larvae. Both rotifers... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1993 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2709 |
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| Van Ballaer, E.; Versichele, D.; Vanhaecke, P.; Léger, P.; Ben Abdelkader, N.; Turki, S.; Sorgeloos, P.. |
| <i>Artemia</i> cysts have been collected from different saltworks and natural salt lakes in Tunisia. The cyst material was processed and used for the following characterization analyses: cyst and naupliar biometrics, cyst hatching characteristics, fatty acid pattern of the nauplii, nutritional value of the nauplii for mysid shrimp, naupliar growth rate and temperature resistance, mode of reproduction, and characterization of sibling species. The cross-breeding tests and cyst biometrics reveal that only <i>Artemia tunisiana</i> occurs in Tunisia. Although quality improvements may be expected through improved harvesting, Tunisian <i>Artemia</i> have acceptable hatching characteristics and are a good food for mysid shrimp.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemia; Tunisia. |
| Ano: 1987 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3207 |
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| Léger, P.; Johns, D.; Sorgeloos, P.. |
| A standardized bioassay is described for the nutritional evaluation of <i>Artemia</i> nauplii and metanauplii using juvenile <i>Mysidopsis bahia</i>. This test is particularly suited to evaluate the dietary value of different strains and batches of <i>Artemia</i> . One day starved, fed or enriched <i>Artemia</i> metanauplii can also be tested.For this test, a homogenous population of freshly-released juveniles (less or equal to 24h-old) were produced in a mysid generator-separator. The test animals were transferred into an experimental apparatus, cultured under standard conditions and offered <i><i>Artemia</i> ad libitum</i>. After 12 days, data on survival, length, individual dry... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemia; Mysidopsis bahia. |
| Ano: 1987 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3181 |
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| Léger, P.; Vanhaecke, P.; Sorgeloos, P.. |
| Freshly-hatched <i>Artemia</i> nauplii from various geographical sources survived storage in a refrigerator (2-4°C) at densities of 2000 per ml and above. Except for <i>Artemia</i> from Chaplin Lake and Buenos Aires, naupliar viability was very high even after 48 h storage, and did not decrease significantly after a 24 h post-storage transfer to 25°C. Neither the naupliar dry weight nor biochemical composition changed significantly during refrigeration for most strains tested. Comparative culture-tests with stored and freshly-hatched nauplii as food for juvenile marine mysids <i>Mysidopsis bahia</i> M. and larval carp <i>Cyprinus carpio</i> L. revealed similar production performances. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aquaculture techniques; Cold storage; Nauplii; Artemia. |
| Ano: 1983 |
URL: http://www.vliz.be/imisdocs/publications/261894.pdf |
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| Léger, P.; Sorgeloos, P.; Millamena, O.M.; Simpson, K.L.. |
| Different <i>Artemia</i> cyst samples harvested from the San Francisco and the San Pablo Bay regions (California, USA), and suspect because of their poor nutritional performance in fish and crustacean farming, have been analyzed for their chlorinated hydrocarbon and fatty acid content. These results have been correlated with survival, growth, and biomass production of larvae of the marine crustacean <i>Mysidopsis bahia</i> Molenock fed those different <i>Artemia</i> in a standard culture test. Differences in chlorinated hydrocarbon content do not correlate with differences in mysid culture performance. Fatty acid profiles reveal three groups of <i>Artemia</i> batches with high, intermediate, and low levels of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chlorinated hydrocarbons Fatty acids Nutritional requirements Artemia INE; USA; California; San Francisco Bay INE; USA; California; San Pablo Bay. |
| Ano: 1985 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3965 |
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| Léger, P.; Naessens-Foucquart, E.; Sorgeloos, P.. |
| The importance of essential fatty acids for the early larval stages of cultured marine fish and crustacean larvae is well documented. In this regard, the variability in essential fatty acid content of their live prey <i>Artemia</i> is critical.This paper describes different techniques for improving the fatty acid profile in <i>Artemia</i> nauplii using microparticles and emulsions as enrichment diets. These diets can be applied during the incubation of the cysts and/or after the separation of the nauplii. After enrichment, the nauplii not only contain high levels of the essential fatty acid 20:5 omega 3 (up to 13.5% or 35.2 mg/g) but also considerable levels of 22:6 omega 3 (up to 7% or 18.1 mg/g), another essential fatty acid which... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemia; Mysidopsis bahia. |
| Ano: 1987 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3184 |
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| Nelis, H.; Léger, P.; Sorgeloos, P.; De Leenheer, A.P.. |
| The brine shrimp <i>Artemia</i> , an excellent live food source in aquaculture, has been studied as a carrier to deliver selected chemotherapeutic agents to fish for prophylactic treatment of infectious diseases. To monitor the efficiency of incorporation of trimethoprim and sulfamethoxazole in <i><i>Artemia</i> franciscana</i>, a sensitive and specific analytical method was developed. It is based on homogenization of <i>Artemia</i> nauplii in methanol, extraction of lipids with hexane, solid-phase cleanup on C<sub>18</sub> cartridges, and reversed-phase liquid chromatography with detection at 210 nm. The method is sensitive (detection limit, on the order of 3 µg/g with a sample quantity of 30 mg... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aquaculture techniques; Fish culture; Infectious diseases; Medicine; Artemia. |
| Ano: 1991 |
URL: http://www.vliz.be/imisdocs/publications/262329.pdf |
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| Coutteau, P.; Lavens, P.; Léger, P.; Sorgeloos, P.. |
| The development of a cost-effective algal substitute would greatly reduce operating costs of bivalve hatcheries and has therefore been the subject of many studies. Previous work has resulted in the development of a yeast diet with improved digestibility and nutritional composition. Preliminary trials showed that this diet can substitute up to 80% of the algal diet in the seed culture of the Manila clam <i>Tapes semidecussata</i>. In this communication we propose a culture test diet which will be used to study further dietary improvements of the yeast product.Juveniles of the Manila clam (1 to 5 mg unit weight) were batch cultured in a 51 recirculating system. Optimal daily ration for the algal control diet <i>Chaetoceros... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1990 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2812 |
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| Registros recuperados: 28 | |
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