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An integrated fish-plankton aquaculture system in brackish water ArchiMer
Gilles, S.; Fargier, L.; Lazzaro, X.; Baras, E.; De Wilde, Nicolas; Drakides, C.; Amiel, C.; Rispal, B.; Blancheton, Jean-paul.
Integrated Multi-Trophic Aquaculture takes advantage of the mutualism between some detritivorous fish and phytoplankton. The fish recycle nutrients by consuming live (and dead) algae and provide the inorganic carbon to fuel the growth of live algae. In the meanwhile, algae purify the water and generate the oxygen required by fishes. Such mechanism stabilizes the functioning of an artificially recycling ecosystem, as exemplified by combining the euryhaline tilapia Sarotherodon melanotheron heudelotii and the unicellular alga Chlorella sp. Feed addition in this ecosystem results in faster fish growth but also in an increase in phytoplankton biomass, which must be limited. In the prototype described here, the algal population control is exerted by herbivorous...
Tipo: Text Palavras-chave: IMTA; Tilapia; Chlorella; Brachionus plicatilis; Photosynthetic recycling aquaculture system.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00118/22955/20945.pdf
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Bacteries associees aux production de Brachionus plicatilis ArchiMer
Nicolas, Jean-louis; Joubert, M.
Bacteria associated with semi-continuous culture of Brachionus plicatilis , which is used as the first food of marine fish larvae, were counted on Zobell 2216 E medium and identified. The numbers of bacteria were very high in both Brachionus (about 10 super(11) bact. per ml of digestive content) and in water (from 1.6.10 super(6) to 4.7.10 super(7) bact. per ml). The cultures were studied at driving a time when mortalities occurred frequently. The introduction of a Pseudomonas) phenon at a proportion of about 50% to the dominant microflora persisted in time and was little influenced by diet. It has been the cause of the repression of the Vibrio, Aeromonas group which was found in an unusually small proportion. It induced a lack of microflora diversity and...
Tipo: Text Palavras-chave: Brachionus plicatilis; Rotifera; Pseudomonas; Aeromonas; Vibrio; Nutrition; Pathology; Fish culture; Fish larvae; Food organisms; Bacteria; Continuous culture; Ecological associations; Zooplankton culture.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-994.pdf
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Contributions towards a specific DHA enrichment in the live food <i>Brachionus plicatilis</i> and <i>Artemia</i> sp. OMA
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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Desempenho larval do camarão-d'água-doce (Macrobrachium rosenbergii De Man, 1879) submetido a diferentes regimes alimentares R. Bras. Zootec.
Thomaz,Luciana Almada; Oshiro,Lídia Miyako Yoshii; Bambozzi,Andrea Cecchetto; Seixas Filho,José Teixeira de.
O desempenho das larvas de Macrobrachium rosenbergii submetidas a quatro diferentes regimes alimentares foi verificado utilizando a observação diária dos subestádios larvais e as primeiras metamorfoses. As larvas foram estocadas em densidade de aproximadamente 100 larvas.l-1, em 16 tanques retangulares, com capacidade de 33 litros. O experimento foi dividido em quatro unidades experimentais (blocos), nos quais foram testados quatro regimes alimentares na larvicultura em circuito aberto, com quatro repetições por tratamento. Os regimes alimentares substituindo progressivamente náuplio de Artemia sp. (nas) pelo rotífero Brachionus plicatilis (rots) foram os seguintes tratamentos: 100% Brachionus plicatilis (30 rots/mL) (T1); 100% Artemia (5 nas/ mL) (T2),...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aqüicultura; Alimentação; Brachionus plicatilis; Camarão-d'água-doce; Larvicultura; Macrobrachium rosenbergii.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982004000800003
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Evaluation of microdiets versus live feeds on growth, survival and fatty acid composition of larval haddock (Melanogrammus aeglefinus) ArchiMer
Blair, Tammy; Castell, Fisheries And Oceans Canada; Neil, Steven; D'Abramo, Louis; Cahu, Chantal; Harmon, Paul; Ogunmoye, Kehinde.
Until recently, it was considered impossible to feed newly hatched marine fish species with a compound diet. Substituting a compound diet for live prey was performed several weeks after hatching, depending on the species. Compound diets were well ingested at the early stage but larvae died with a gut full of food, suggesting that larvae were unable to digest the compound diet. The hypothesis was that younger larvae have insufficient digestive enzymes to thrive on compound diets, and that exogenous enzymes, provided from live prey, are necessary for early stages. The organogenesis of marine fish larvae is not completely achieved at hatching and histological studies have revealed that the anatomy of the digestive tract undergoes developmental changes over...
Tipo: Text Palavras-chave: Highly unsaturated fatty acids; Essential fatty acids; Survival; Growth; Artemia; Brachionus plicatilis; Microdiet; Haddock larvae.
Ano: 2003 URL: https://archimer.ifremer.fr/doc/2003/publication-445.pdf
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High-density production of the rotifer <i>Brachionus plicatilis</i> in a recirculation system: consideration of water quality, zootechnical and nutritional aspects OMA
Suantika, G.; Dhert, Ph.; Nurhudah, M.; Sorgeloos, P..
Rotifers were reared on the artificial diet culture Selco® in batch and recirculation conditions at different water exchange rates. The different rearing conditions resulted in considerable changes in water quality, which in their turn affected rotifer growth and food consumption. At a daily water exchange rate of 100%, no positive effect was obtained in rotifer growth compared to the batch rearing system, but the rotifer culture period could be prolonged by 1 week. By increasing the daily water exchange rate from 100 to 300% the maximum rotifer density could be significantly (<i>P</i> < 0.05) increased from 1800 to 2500 individuals ml<sup>-1</sup>. At the highest recirculation rate (daily water exchange of 500%) the highest...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquaculture systems; Batch culture; Population density; Recirculating systems; Water quality; Zooplankton culture; Brachionus plicatilis; Rotifera.
Ano: 2000 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=44
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New developments in the mass culture and nutritional enrichment of the rotifer <i>Brachionus plicatilis</i> using artificial diets OMA
Komis, A.; Naessens, E.; Van Ballaer, E.; Van Sprang, P.; Léger, P.; Sorgeloos, P..
A research program was carried out to improve and facilitate rotifer (<i>Brachionus plicatilis</i>) culturing as well as to assure their optimal nutritional quality as a prey, concentrating on the development of a dry and complete rotifer diet that does not require the use of algae and does result in a HUFA rich <i>Brachionus</i>. The present poster provides results dealing with culture aspects and rotifer nutritional quality. Different diet compositions based on single cell proteins enriched with various nutritional additives were evaluated. Results obtained so far demonstrate that a selected formula of a combined culture and enrichment diet, that does not involve the use of microalgae at all, can be successfully used for growing...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Artificial feeding; Diets; Food organisms; Mass culture; Nutritive value; Brachionus plicatilis.
Ano: 1989 URL: http://www.vliz.be/imisdocs/publications/262326.pdf
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Predictive value of laboratory tests with aquatic invertebrates: influence of experimental conditions OMA
Persoone, G.; Van de Vel, A.; Van Steertegem, M.; De Nayer, B..
Considering the difficulty of making meaningful extrapolations of laboratory bioassay data to real world situations, short-term tests have been carried out in a factorial pattern to determine the magnitude of effect variation resulting from changes in experimental abiotic conditions.Three selected zooplankton species (the rotifer <i>Brachionus plicatilis</i>, the brine shrimp <i><i>Artemia</i> salina</i> and the waterflea <i>Daphnia magna</i>) have been exposed to increasing concentrations of two chemicals (one inorganic and one organic) in different combinations of two major environmental variables.For the brackish water rotifer <i>B. plicatilis</i> the acute toxicity of potassium dichromate and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Artemia salina; Brachionus plicatilis; Daphnia magna.
Ano: 1989 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3189
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Rearing techniques for difficult marine fish larvae OMA
Dhert, Ph.; Divanach, P.; Kentouri, M.; Sorgeloos, P..
In finfish mariculture, seed production and larval rearing still form the bottleneck for all ongrowing operations and are considered as the main limiting factor for industrial development. Through trial and error more than through biological understanding two opposite hatchery techniques have been developed which surprisingly control a multiparametric combination of different factors but aspire to the same objective of conformity with wild standards and the cost-effective production of larvae. In intensive aquaculture, the rearing technique is characterised by high initial larval densities in small tanks under strict hydraulic, thermic, and nutritional conditions. The light conditions are artificial. The temperature and quality of water are controlled. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquaculture techniques; Environmental conditions; Fish eggs; Fish larvae; Food organisms; Industrial production; Marine fish; Rearing; Seed (aquaculture); Artemia; Brachionus plicatilis; Pisces [Fish].
Ano: 1998 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=301
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Selection of bacteria enhancing the growth rate of axenically hatched rotifers (<i>Brachionus plicatilis</i>) OMA
Rombaut, G.; Dhert, P.; Vandenberghe, J.; Verschuere, L.; Sorgeloos, P.; Verstraete, W..
The effect of bacterial strains on the growth rate of rotifers, Brachionus plicatilis, was determined under monoxenic conditions. The first objective was to obtain sterile rotifer cultures starting from rotifer resting eggs using merthiolate or glutaraldehyde as disinfectant. Sterile rotifer cultures were obtained, without affecting the hatching ability of the resting eggs, when 0.05 µl/l glutaraldehyde was used. This disinfection procedure was used to examine the effect of 20 bacterial strains, isolated from well-performing live-feed production systems, on the population growth rate of rotifers cultured under monoxenic conditions. Five out of the 20 bacterial strains tested were able to improve significantly the asexual reproduction of rotifers. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquaculture; Aquaculture techniques; Bacterial diseases; Disease transmission; Disinfection; Hatching; Zooplankton; Zooplankton culture; Brachionus plicatilis; Rotifera.
Ano: 1999 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=4030
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Techniques de cultures axeniques d'organismes planctoniques: Un rotifere, Brachionus plicatilis et une algue, Platymonas (= Tetraselmis ) suecica. ArchiMer
The efficiency of different methods for the purification and maintenance of axenic cultures of a rotifer and an unicellular alga is tested. The use of antibiotics seems to be the most suitable method to realize bacteria-free cultures of plankton. No elements prove that the presence of bacteria is necessary for the development of the cultures. Bacteria-free cultures show a physiological evolution of the culture medium is enriched with some nutrients.
Tipo: Text Palavras-chave: Brachionus plicatilis; Rotifera; Algae; Bacteria; Antibiotics; Algal culture; Laboratory culture.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/publication-1823.pdf
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The influence of a selected bacterial strain <i>Vibrio anguillarum</i> TR27 on the growth rate of the rotifer, <i>Brachionus plicatilis</i> in two culture conditions OMA
Shiri Harzevili, A.R.; Van Duffel, H.; Defoort, T.; Sorgeloos, P.; Swings, J..
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brachionus plicatilis; Vibrio anguillarum.
Ano: 1995 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2612
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Variability of the microbial environment of rotifer <i>Brachionus plicatilis</i> and <i>Artemia</i> production systems OMA
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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Zooplankton of an urban coastal lagoon: composition and association with environmental factors and summer fish kill Rev. Bras. Zool.
Souza,Leonardo C. e; Branco,Christina W. C.; Domingos,Patrícia; Bonecker,Sérgio L. C..
Zooplankton may be regarded as a sensitive tool for monitoring environmental variations in coastal lagoons due to their ability to immediately react to changes in the water column trophic features and salinity levels. As a coastal lagoon with a broad history of anthropic influence, Rodrigo de Freitas Lagoon (Rio de Janeiro, Brazil) is widely used for water sports and artisanal fishing. The present study aimed to expand the knowledge base about zooplankton in the Rodrigo de Freitas Lagoon by assessing the composition and time-spatial distribution of the major zooplankton groups. Samples were collected fortnightly from at four distinct sampling points August 2001 to July 2002. At each point, salinity, temperature, dissolved oxygen and water transparency were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brachionus plicatilis; Dissolved oxygen; Fish mortality; Mesohaline; Shallow waters.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000300010
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