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| Registros recuperados: 140 | |
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| Verdonck, L.; Swings, J.; Kersters, K.; Dehasque, M.; Sorgeloos, P.; Léger, P.. |
| Samplings were organized in three marine fish hatcheries. Samples were taken at different steps during the production of algae, rotifers and <i>Artemia</i> . There were 233 dominant colony types isolated for further characterization. The isolates were compared to each other and to reference strains of <i>Photobacterium, Vibrio</i> and <i>Alteromonas</i>, using cellular fatty acid fingerprints. Fatty acid profiles of the isolates were grouped using principal component analysis. The isolates fell into at least ten major groups, of which two correspond to the genera <i>Vibrio</i> and to <i>Alteromonas</i>, respectively. Some groups seem to be restricted to a particular type of live food or isolation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemia; Brachionus plicatilis. |
| Ano: 1994 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2689 |
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| Vanhaecke, P.; Persoone, G.. |
| Considering the need for reliable standardized routine toxicity tests for the marine environment, a short-term bioassay with <i>Artemia</i> nauplii has been developed for routine testing. The major reason for the selection of brine shrimp as test species is the continuous availability of <i>Artemia</i> under the form of dry cysts from which the larvae are hatched very easily. This unique advantage solves one of the major problems of aquatic ecotoxicological tests, namely stock recruitment and/or culturing; the <i>Artemia</i> test can be performed anywhere and at any time from dry biological material available "on the shelf".An extensive study has been performed on various brine shrimp tests published in scientific... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Methodology; Nauplii; Toxicity tests; Artemia. |
| Ano: 1984 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3275 |
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| Triantaphyllidis, G.V.; Abatzopoulos, T.J.; Sorgeloos, P.. |
| In this study we report on the known <i>Artemia</i> habitats worldwide. Recent literature information is incorporated about the taxonomic status of the various populations studied. The genus is composed of di-, tri-, tetra- and pentaploid parthenogenetic populations and of the following bisexual species, <i>A. franciscana franciscana</i>, <i>A. franciscana monica</i>, <i>A. franciscana</i> sp., <i>A. persimilis</i>, <i>A. salina, A. urmiana, A. sinica</i> and <i>A.</i> sp. from Kazakhstan. The problems of characterizing new brine shrimp populations are discussed. In view of the great importance of <i>Artemia</i> as part of the live food chain for the culture of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemia. |
| Ano: 1998 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=320 |
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| Merchie, G.; Lavens, P.; Radull, J.; Nelis, H.; De Leenheer, A.P.; Sorgeloos, P.. |
| The effects of high levels of ascorbic acid (AA) delivered through enriched live food has been verified through the successful culture of larval giant freshwater prawn, <i>Macrobrachium rosenbergii</i> Two successive feeding trials were set up using a control (550 µg AA g<sup>-1</sup> DW) and two different AA-enrichment levels in <i>Artemia</i> (1300 and 2750 µg AA g<sup>-1</sup> DW). Under standard culture conditions, no differences in growth nor survival could be observed demonstrating that the nutritional requirements are below 550 µg AA g<sup>-1</sup> DW, which is the normal level occurring in freshly-hatched <i>Artemia</i> . However, a significantly positive effect could be... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemia. |
| Ano: 1995 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2582 |
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| Wolf, G.; Vanpachtebeke, M.; Hens, F.; Decleir, W.; Moens, L.; Van Hauwaert, M.-L.. |
| The physiological properties of total haemoglobin samples from <i>Artemia</i> populations of different geographical origin (Tientsin, Great Salt Lake, Chaplin Lake, Macau, Galera Zamba) have been studied <i>in vitro</i>. Measurements carried out with the diffusion chamber technique at different pH-values and temperatures, revealed significant differences in oxygen affinity (p50 values between 1.25 and 16.33 mm Hg), cooperativity (Hill coefficients between 1.07 and 2.18) and free oxygen-binding energy (between -34.7 and 56.2 Kj/mol). All the strains showed a decrease of oxygen affinity with increasing temperature, and a positive Bohr effect. Tientsin containing a considerable amount of Hbl (36.6%), shows the lowest oxygen... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemia. |
| Ano: 1987 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3231 |
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| Van Damme, P.; Pacolet, W.; Sulem Yong, S.; Fremaut, D.; Ollevier, F.P.. |
| Two experiments were performed in order to determine the effect of supplementation of dry foods with live <i>Artemia</i> nauplii on the growth, survival, rate of cannibalism, and length-weight relationships of <i>Clarias gariepinus</i> larvae. It was found that <i>Artemia</i> -supplementation resulted in a significantly higher growth rate. The "condition", expressed as a length-weight relationship, was likewise altered after supplementation. The survival and rate of cannibalism were not influenced by supplementation. <i>Artemia</i> -supplementation of dry foods was compared with other approaches which are based on the concept of the 'adaptation weight'. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adaptations; Freshwater fish; Weight; Artemia; Clarias gariepinus. |
| Ano: 1989 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3193 |
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| Sorgeloos, P.; Remiche-Van der Wielen, C.; Persoone, G.. |
| Because of their easy hatching from dry cysts and their year-round availability, nauplii of the brine shrimp <i><i>Artemia</i> salina</i> are most convenient test organisms for toxicity studies. The bioassays mentioned in literature have, however, mostly been carried out with larvae of which neither the exact instar stage nor the geographical origin is known. The incubation of the cysts should always be carried out under strictly controlled temperature conditions since both the onset of hatching and the length of the hatching period are temperature-dependent. Moreover, the experiments should only be carried out with populations of nauplii of the same stage of development since it is demonstrated that the second and third instars are... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nauplii; Toxicity tests; Artemia. |
| Ano: 1978 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3588 |
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| Sorgeloos, P.. |
| Biometrical, biochemical and food-value characteristics of <i>Artemia</i> nauplii vary with the source of the cyst material. In order to facilitate intercalibration and/or comparison of research conducted with cysts from different sources, homogenous cyst material can now be obtained from the <i>Artemia</i> Reference Center (State University of Ghent, J. Plateaustraat 22, B-9000 Ghent, Belgium). The reference cysts have been tested extensively for hatching characteristics, biometrics, fatty-acid content, pesticide contamination and effectiveness as larval food for various crustaceans and fishes. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cysts; Artemia. |
| Ano: 1980 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3694 |
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| Bernaerts, F.; Blust, R.; Van der Linden, A.; Thoeye, C.. |
| The respiratory physiology in 35 pro mille artificial seawater has been studied for four strains of adult <i>Artemia</i> . The scope of activity and the potential activity range were studied by measuring the respiratory rate of actively swimming and anaesthetized animals and the respiration of total homogenates. The experiments were carried out at temperatures ranging from 5 to 45°C. The lower lethal value for male and female <i>Artemia</i> from the four strains (Great Salt Lake, Macau and Sfax) being 5°C. The higher lethal value for male <i>Artemia</i> from Great Salt Lake, Macau and Sfax being 45°C, while male animals from San Francisco Bay only survive up to 35°C. Female <i>Artemia</i> from the four... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemia. |
| Ano: 1987 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3161 |
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| Van Beek, E.; Criel, G.R.J.; Walgraeve, H.; De Loof, A.. |
| The <i>Artemia</i> strain from Great Salt Lake (GSL 375) was used. Total body extracts and hemolymph of <i>Artemia</i> were purified by solvent partition and column chromatography. Moulting-hormone concentrations were then determined by a specific radioimmunoassay (RIA). Results are expressed in ng ecdysteroid activity/g fresh weight (or per ml). Initially, the RIA data on extracts of adults were highly variable. The use of a more accurate sampling technique based on the reproductive cycle of the females allowed to determine a hormone activity pattern.In females, moulting cycles alternate with vitellogenic cycles. The lowest values of ecdysone (3-6 ng ecdysone equivalents/g fresh body weight or ml hemolymph) occur during... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hormones; Moulting; Artemia. |
| Ano: 1987 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3209 |
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| Baert, P.; Anh, N.T.N.; Quynh, V.D.; Hoa, N.V.; Sorgeloos, P.. |
| In this study, one-cycle and multi-cycle culture systems for <i>Artemia</i> in seasonal salt ponds are compared. In one-cycle systems, <i>Artemia</i> is inoculated only once per season, while in multi-cycle systems ponds are drained and re-stocked several times per season. In Vietnam, three-cycle systems gave significantly higher cyst yields than did the one-cycle system. However, after two cycles, systems were not significantly different. Food limitation probably caused the steady decline in cyst yields, as observed in the one-cycle ponds. In these ponds, females have smaller broods (from the second cycle onwards) and during the last cycle the number of adult females is lower than in multi-cycle ponds. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cysts; Pond culture; Artemia. |
| Ano: 1997 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2921 |
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| Dhert, Ph.; Sorgeloos, P.; Devresse, B.. |
| This paper reports on enrichment techniques oriented towards a specific DHA accumulation in the live prey <i>Brachionus plicatilis</i> and <i>Artemia sp.</i> The product used in these experiments (DHA7) is an experimental emulsion with a DHA/EPA ratio 6.7:1. Rotifers enriched with this pure DHA7 emulsion contained up to 69 mg/g DW DHA and a DHA/EPA ratio of 1.6. The DHA/EPA ration could be increased to a much higher level by different enrichment techniques. Dilution of the DHA7 emulsion with coconut oil prior to enrichment also had a beneficial effect on the DHA/EPA ratio of the rotifers. Using a mixture DHA7/coconut oil 3:7 the DHA/EPA ratio could be raised to 4.9. In <i>Artemia</i> DHA levels were slightly influenced... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemia; Brachionus plicatilis. |
| Ano: 1993 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2688 |
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| Triantaphyllidis, G.; Criel, G.R.J.; Abatzopoulos, T.J.; Thomas, K.M.; Peleman, J.; Beardmore, J.A.; Sorgeloos, P.. |
| A scanning electron microscopy (SEM) study of bisexual <i>Artemia</i> populations revealed that populations representing the species <i>A. franciscana, A. persimilis, A. urmiana, A. sinica</i> and a recently described species from Kazakhstan have a pair of spine-like outgrowths at the basal parts of their penes, whereas populations from Southern Europe and North Africa (i.e. Mediterranean populations) lack these spine-like outgrowths. Allozyme and DNA polymorphisms, detected by allozyme starch gel electrophoresis and AFLP fingerprinting, respectively, suggested conspecificity of the studied populations from the broader Mediterranean basin. Male specimens from the collection of the Natural History Museum of London (UK) of the extinct... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemia. |
| Ano: 1997 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2977 |
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| Tackaert, W.; Vanhaecke, P.; Sorgeloos, P.. |
| A standard method has been developed to produce F<sub>1</sub>-generation cysts from different zygogenetic strains and their cross-breeds. The F<sub>1</sub> cysts were used to determine the quantitative heritability of the following characteristics: cyst hatchability, cyst diameter, larval growth, and temperature resistance of the freshly-hatched nauplii.Data are given for cysts produced from nine strains and seven cross-breeds. Important differences for all characteristics studied were noted between the cross-bred and the parental strains. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemia. |
| Ano: 1987 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3203 |
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| Vanhaecke, P.; Sorgeloos, P.. |
| A comparative hatching study has been carried out with reference <i>Artemia</i> cysts as well as cysts from Argentina, Australia, Brazil, Canada, France, Italy, the People' s Republic of China, the Philippines and the USA. Hatching rate, percentage and efficiency vary considerably from one cyst source to another. These hatching criteria are, however, not strainspecific since significant variation is found among cyst batches from the same geographical origin. The limitations of the "hatching efficiency" concept are discussed and a new criterion "hatching output", i.e. the biomass of nauplii expressed in mg dry weight produced per gram cyst product, is proposed for evaluation of the hatching quality of <i>Artemia</i> cyst brands. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Efficiency; Hatching; Artemia. |
| Ano: 1983 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3399 |
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| Registros recuperados: 140 | |
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