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Advances in the enrichment of rotifers and <i>Artemia</i> as food sources in marine larviculture OMA
Léger, P.; Grymonpré, D.; Van Ballaer, E.; Sorgeloos, P..
A summary is given of experiments conducted regarding the enrichment of rotifers and <i>Artemia</i> for use as food sources marine larviculture, with particular reference to levels of omega 3-HUFA.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brine shrimp culture; Crustacean culture; Fatty acids; Food organisms; Nutritive value; Artemia; Rotifera.
Ano: 1989 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2880
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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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Enrichment of live foods. ArchiMer
Watanabe, T.
Live foods such rotifers and Artemia are still indispensable for mass propagation of larval fish. At present, more than 20 fish and crustacean species are mass produced in Japanese governmental fish farming centres and private hatcheries. Fry are either released into the coastal areas or used for commercial cultivation. This culture technology is rapidly developing with new species being introduced each year and larval rearing is increasingly identified as the number one constraint. Artemia is used most extensively, particularly for the mass production of Kuruma prawn, Penaeus japonicus .
Tipo: Text Palavras-chave: Penaeus japonicus; Malacostraca; Rotifera; Diets; Larvae; Brine shrimp culture; Nutrition; Marine crustaceans; Shrimp culture; Hatcheries; Fish culture.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1444.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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Production, disinfection and evaluation for aquaculture applications of rotifer resting eggs from Bohai Bay, P.R. of China OMA
Dhert, P.; Schoeters, K.; Vermeulen, P.; Sun, J.; Gao, S.; Shang, Z.; Naihong, X.; Van Duffel, H.; Sorgeloos, P..
The dynamics of resting egg production of the rotifer <i>Brachionus plicatilis</i> originating from a wild population in the Tanggu Saltworks (P.R. China) was investigated. In the natural environment as well as in semi-controlled rearing conditions an increased resting egg production was noticed with declining food availability. Processed resting eggs had a hatching efficiency of 3x10<sup>6</sup> rotifers per gramme irrespective of their origin. Hatching started 22h after the initiation of incubation and was completed after 36h. Rotifers obtained from resting eggs could be further cultured on Culture Selco® and enriched with Super Selco®. The fatty acid profile of these rotifers were not divergent from reference rotifers...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquaculture; Resting eggs; Rotifera.
Ano: 1997 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2939
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Review and current status of the aquaculture potential for the mahimahi, Coryphaena hippurus ArchiMer
Kraul, S.
The mahimahi, Coryphaena hippurus , has excellent potential for aquaculture due to its fast growth (2 kg at 6 months, 9 kg at 1 year), good food conversion efficiency (30%, wet weight), high fecundity with natural captive spawns (200,000 eggs/female/2 days year round for a 1 year old female), and high price (US$ 9.00/kg wholesale in Hawaii).
Tipo: Text Palavras-chave: Copepoda; Rotifera; Coryphaena hippurus; Coryphaenidae; Pisces; Artificial feeding; Diets; Spawning; Fingerlings; Females; Eggs; Food; Food conversion; Hatcheries; Nutritional requirements; Growth.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1473.pdf
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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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Spatiotemporal dynamics of soil rotifers in a South-Bohemian beech forest. Repositório Alice
DEVETTER, M..
Abstract ? The objective of this work was to determine seasonal variation and vertical distribution of the soil rotifer assemblage in a climax beech forest in South Bohemia. During 2005, soil rotifer was investigated to the species level. Soil samples of 10 cm2 and 10 cm in depth were divided into five layers, which were processed separately. Thirty one rotifer species were identified during the investigation. Dominant species significantly changed throughout the seasons. The most abundant species were Encentrum arvicola and Wierzejskiella vagneri among the monogononts, and Adineta steineri, Ceratotrocha cornigera, Habrotrocha filum, Habrotrocha ligula, Macrotrachela plicata, Mniobia tentans, Mniobia incrassata and Mniobia granulosa among the bdelloids....
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Bdelloidea; Monogonota; Seasonal dynamics; Vertical distribution; Rotifera.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/handle/doc/660995
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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 effect of HUFA and vitamin C-enriched rotifers on larval growth and survival of grouper (<i>Epinephelus suillus</i>) OMA
Chavez, D.R.; Estenor, D.G.; Merchie, G.; Lavens, P..
Newly-hatched grouper larvae were reared for 24 days at a density of 15 larvae.l<sup>-1</sup> in 250-l capacity cylindro-conical tanks filled with 200l seawater. Starting day 2, the larvae were given: <i>Chlorella</i>-fed rotifers (Chl-R) rotifers fed Culture Selco (INVE Aquaculture NV, Belgium) (CS-R), and rotifers fed Culture Selco and consequently enriched for 24h with 20% vitamin C (CSC-R). The rotifer density in the larval tanks was maintained at 15 rotifers.ml<sup>-1</sup>. The rotifer diet was supplemented with egg yolk until day 5. Each treatment had five replicates. Preliminary results show no significant difference in the survival rate of grouper larvae given Chl-R (4.21±2.8%), CS-R (2.56±0.9%) and CSC-R...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fatty acids; Feeding experiments; Growth; Larvae; Survival; Vitamin C; Chlorella; Epinephelus suillus; Rotifera.
Ano: 1995 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2537
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The use of biomarkers in <i>Daphnia magna</i> testing: 3. Rapid toxicity testing of pure chemicals and sediment pore waters using ingestion and digestive enzyme activity OMA
De Coen, W.M.; Vangheluwe, M.L.; Janssen, C.R..
In this study, 4 rapid (90 min) toxicity tests were developed using ingestion and digestive enzyme activity of <i>Daphnia magna</i> juveniles. Ingestion activity was assessed using fluorescent labelled latex micro-beads and digestive enzyme activity (trypsin, beta-galactosidase and esterase) was measured in homogenates using chromogenic (N-benzoyl-L-arginine-4-nitroanilide) and fluorogenic (4-methylumbelliferyl-B-D-galactoside and fluorescein diacetate) substrates.All assays and toxicity endpoints were evaluated for their potential use as routine toxicity testing tools for pure chemicals and sediment pore waters. The observed high correlation coefficients (r(2)>0.9) between the short-term toxicity values and the acute toxicity endpoint (24h...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Assimilation; Assimilation; Exposure; Exposure; Filtration; Respiration; Zooplankton; Daphnia magna; Rotifera.
Ano: 1998 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7488
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Variação temporal da comunidade zooplanctônica em viveiros de piscicultura. Repositório Alice
SILVA FILHO, A. T. da; ARAUJO, P. L. D.; CAVICHIOLI, G. O.; MILHOMENS, H. de C.; PINHO, E. S.; LIMA, A. F.; MORO, G. V..
O presente estudo teve por objetivo analisar a variação temporal da comunidade planctônica em dois viveiros de piscicultura, localizados na Fazenda Projeto Surubim, no município de Santa Rita, Tocantins, Brasil. As coletas foram realizadas entre o período de março e agosto de 2014, com uso de uma rede de plâncton. As amostras foram analisadas quantitativamente, a partir da contagem em câmaras de Sedgewick-Rafter de três subamostras (1 mL), sob microscópio óptico, e qualitativamente quanto a três grandes grupos: rotíferos, cladóceros e copépodos. Ao analisar as amostras, observou-se que a comunidade de rotíferos se sobressai das demais comunidades analisadas, semelhante ao que ocorre em ambientes aquáticos naturais. A população de cladóceros se manteve...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Rotifera; Cladocera; Aquicultura; Piscicultura; Zooplancton; Copepoda.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1079422
Registros recuperados: 12
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