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Registros recuperados: 27
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A new artificial diet for the early weaning of seabass (<i>Dicentrarchus labrax</i>) larvae OMA
Devresse, B.; Candreva, P.; Léger, P.; Sorgeloos, P..
The weaning of marine fish larvae is a critical step in larval rearing. The successful transition from live food to an artificial feed depends among others on the quality of the dry feed used (e.g. freshness of ingredients, digestibility, quality of the formulation) and the larvae themselves (e.g. age, behaviour towards artificial diets, development of the digestive tract, efficiency of certain metabolic pathways). The present study shows the results obtained with a new artificial diet formulated for the weaning phase of marine fish larvae (<i>Dicentrarchus labrax</i>) in commercial hatcheries.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Artificial feeding; Feed composition; Fish culture; Fish larvae; Hatcheries; Dicentrarchus labrax [Bass].
Ano: 1991 URL: http://www.vliz.be/imisdocs/publications/262322.pdf
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Aquaculture of red tilapia Oreochromis sp. in marine environments: State of the art. ArchiMer
Watanabe, W; Ernst, D; Olla, B; Wicklund, R.
The Caribbean Marine Research Centre is conducting research on the development of methods for intensive culture of euryhaline red tilapias in marine environments for application to Caribbean islands and similar regions with limited freshwater resources.
Tipo: Text Palavras-chave: Survival; Growth; Eggs; Brood stocks; Incubation; Brackish water; Seed (aquaculture); Food conversion; Hatcheries; Controlled conditions; Diets; Floating cages; Sea water; Salinity tolerance; Intensive culture; Fingerlings.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1493.pdf
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Avaliação da produção de biogás de resíduos de incubatório de ovos. Repositório Alice
STEINMETZ, R. L. R.; KUNZ, A.; SOARES, H. M.; AMARAL, A. C. do; MOTA, S. C. A..
Os resíduos de incubatório de ovos da produção de frangos de corte são caracterizados pelos riscos ambientais e sanitários. Há necessidade de estabelecer conhecimentos cada vez mais sólidos sobre a biossegurança dos métodos de tratamento ou processos que propõem eliminar ou aproveitar os resíduos. Neste contexto, a digestão anaeróbia sinaliza ser uma rota atrativa, pois pode agregar valor por meio da produção de biogás e tratar parcialmente o resíduo, mitigando o impacto ambiental. Porém, são quase inexistentes dados técnico-científicos normatizados e/ou normalizados referentes à produção específica de biogás ou metano de resíduos de incubatório. Este trabalho apresenta resultados de ensaios biocinéticos efetuados sob condições laboratoriais controladas,...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Casca do ovo; Resíduo orgânico; Biogás; Egg shell; Hatcheries; Residual effects; Sustainable agriculture.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1013737
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Characterization of summer mortalities of C. gigas oyster in France in relation to environmental parameters ArchiMer
Soletchnik, Patrick; Ropert, Michel; Bedier, Edouard; Costil, K. S.; Dubois, Brice; Degremont, Lionel; Bouget, Jean-francois; Martin, Jean-louis; Enriquez-diaz, M.; Faury, Nicole; Le Moine, Olivier; Renault, Tristan; Gagnaire, Beatrice; Huvet, Arnaud; Moal, Jeanne; Samain, Jean-francois.
Field characterization of summer mortality was performed in France in the frame of the Morest project. Natural and hatchery spat were compared between three oyster production areas in France. Regardless of the natural or hatchery origin, oysters died during the reproduction period after temperature reaches 19 degree C. Thus, in southern areas, temperature accelerated gametogenesis of small spat (10mm) as well as adults, and mortality appeared for the two age classes. In contrast, sexual maturation proceeded more slowly in northern where spat mortality was lower compared to 18 months old oysters. However, critical gametogenesis and temperature were not sufficient to induce mortalities, as observed in examples with stable environment. Alternatively sediment...
Tipo: Text Palavras-chave: Seasonal variation; Oyster culture; Mortality causes; Hatcheries; Gametogenesis; Environmental factors; Crassostrea gigas; Oysters.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/2003/acte-3348.pdf
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Comparative study of bactrial infections responsible for mass mortality in penaeid shrimp hatcheries of the Pacific zone ArchiMer
Le Groumellec, M.; Haffner, Philippe; Martin, B.; Martin, C..
Mass mortality associated with luminescence has been dbserved in sorne Thai and Ecuadorian penaeid shrimp hatcheries in recent years. Samples collected from hatcheries in these two different areas revealed luminescent sucrose-negative Vibrio strains in larVal rearing tanks where mortality occurred. Pathogenicity trials were carried out to identify the causative agents of mortality and to study the course of infection . . Results showed that strains isolated from Thai hatclleries were more virulent than Ecuadorian strains when tested on different larval stages of Penaeus monodon. The virulence of these strains was also estimated. Trials on other species ofpenaeid shrimp demonstrated the specifie action of Thai strains. Drug sensitivity patterns revealed a...
Tipo: Text Palavras-chave: Mass mortality; Bacterial; Vibrio; Hatcheries; Penaeus monodon; Shrimp.
Ano: 1993 URL: http://archimer.ifremer.fr/doc/1993/acte-6100.PDF
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Croissance et spectre de tailles de six algues utilisees pour la nutrition de larves de bivalves en ecloserie, en culture non renouvelee ArchiMer
Robert, Rene; His, Edouard.
The growth and the size-frequency distribution of six unicellular marine algae, Isochrysis aff. galbana "Tahiti" nom. prov., Pavlova lutheri (Droop) Green, Pseudoisochrysis paradoxa nom. prov., Tetraselmis tetrathele (G.S. West) Butcher, Chaetoceros calcitrans (Paulsen) Takano et Chaetoceros gracilis Schutt have been studied. Most of these species showed an increase in size during the stationary phase of growth. Because these data and anterior ones were achieved in similar experimental conditions, they were ranked by size and their growth performances discussed.
Tipo: Text Palavras-chave: Molluscan larvae; Hatcheries; Nutrition; Growth; Algal culture.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/publication-1778.pdf
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Cultivos de moluscos bivalvos OceanDocs
Pascual, M.S.; Zampatti, E.A..
Bivalve culture in Argentina is beginning to develop commercially. Research was carried out at the North Patagonian gulfs (San Matias, San Jose and Nuevo)and focused three native species: the tehuelche scallop Aequipecten tehuelchus, the puelche oyster Ostrea puelchana and the common mussel Mytilus edulis platensis. Results achieved on each of these three species were different. In the case of scallops, the development of commercial aquaculture did not seem promising for many years due to the fact that production was sustained by natural populations: the dredge fishery of the San Matias Gulf and the diving fishery of the San Jose Gulf. Preliminary culture experiments dealt with larval fixation on artificial collectors and growth to commercial size on...
Tipo: Book Section Palavras-chave: Aquaculture economics; Aquaculture development; Aquaculture systems; Hatcheries; Seed collection; Clam culture; Oyster culture; Scallop culture; Mussel culture; Hatcheries; Seed collection; Oyster culture; Http://aims.fao.org/aos/agrovoc/c_3503; Http://aims.fao.org/aos/agrovoc/c_6930; Http://aims.fao.org/aos/agrovoc/c_5483.
Ano: 1998 URL: http://hdl.handle.net/1834/2580
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Diseases in mollusc hatcheries and their paraedox in health management ArchiMer
Berthe, Franck.
Global molluscan aquaculture production is continuously increasing, dominated by five species, among which the Pacific cupped oyster, Crassostrea gigas, predominates. Hatchery production is accompanying this increase to assist consistent availability of juveniles for restocking, fishery enhancement, genetic improvements as well as for species diversification. Hatchery development contributes significantly to the demand for international transfers of live molluscs; a consequence of which pathogen transfer via transfer of live molluscs is currently recognised as a major cause of epizootic disease outbreaks. Diseases are a primary constraint to mollusc aquaculture growth and sustainability, severely impacting socioeconomic development in many countries....
Tipo: Text Palavras-chave: Mollusca; Crassostrea gigas; Risks; Mollusc culture; Husbandry diseases; Hatcheries; Disease control.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/acte-3289.pdf
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Diseases of cultured prawns in Australia ArchiMer
Lester, R; Paynter, J.
Plebejus baculovirus and other MBV-related viruses have been found in Penaeus plebejus, P. monodon and P. merguiensis . They appear highly pathogenic in certain situations currently undefined. We have found Hepatopancreatic Parvo-like Virus (< hpv) in wild P. esculentus and P. merguiensis but not yet in cultured prawns. The amphophilic intranuclear inclusion bodies we find in P. esculentus do not appear to have a viral cause.
Tipo: Text Palavras-chave: Australia Coasts; Penaeidae; Viral diseases; Fungal diseases; Gills; Viruses; Hatcheries; Gill disease.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1458.pdf
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Disinfectants and antiseptics used in mollusc hatcheries and nurseries ArchiMer
Francois, Cyrille; Pepin, Jean-francois.
Increasing development of aquaculture business has thrown up new requirements in terms of prevention and control of mollusc diseases. In closed structures, one way to reduce infectious risk is to make use of anti-infectives . Specific drugs like antibiotics should be used only for therapeutic purpose against identified agents. Less specific anti-infectives like disinfectants could be employed for preventive and also for curative goals against causal pathogens and opportunist agents. A critical analysis synthesizes the bibliography available on disinfection in mollusc hatcheries and nurseries. Physical and chemical tools are reviewed then selected depending on four criteria: (1) efficiency against most important pathogens of molluscs, (2) safety for...
Tipo: Text Palavras-chave: Antiseptics; Disinfectants; Nurseries; Hatcheries.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/acte-3312.pdf
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Dix ans de production en ecloserie de mollusques bivalves ArchiMer
Leborgne, Y.
SATMAR has developed techniques and methods allowing a production of over 100 million spat per year at a size from 2 to 10 millimetres. Among the 13 species concerned by this production, 3 of major importance are the oysters Crassostrea gigas, Ostrea edulis and the Japanese little neck clam, Ruditapes philippinarum . The hatchery production could easily be doubled if the market would increase. Current research tend to increase the quality of the products by means of genetics and to lower the costs by improving the nursery phase.
Tipo: Text Palavras-chave: Ruditapes philippinarum; Ostrea edulis; Crassostrea gigas; Bivalvia; Costs; Marine aquaculture; Economics; Hatcheries; Aquaculture enterprises; Ecloserie; Production commerciale; Mollusques bivalves.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1184.pdf
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Effects of nutritional requirement of live food organisms on growth and survival of barramundi/seabass Lates calcarifer (Bloch) larvae. ArchiMer
Rimmer, M; Reed, A.
Larvae of barramundi (Lates calcarifer ) reared intensively in some Australian hatcheries have suffered periodic high mortalities which have been ascribed to nutritional deficiencies in the live food organisms used, particularly deficiencies of polyunsaturated fatty acids. Barramundi larvae reared in an experimental system and fed on four diets, representing combinations of supplemented and unsupplemented rotifers (Brachionus plicatilis ) and supplemented and unsupplemented brine shrimp (Artemia salina ). Supplementation of rotifers and brine shrimp with a commercially available microencapsulated diet increased the levels of several polyunsaturated fatty acids in the food organisms.
Tipo: Text Palavras-chave: Lates calcarifer; Brine shrimp culture; Growth; Intensive culture; Fatty acids; Feeding; Mortality; Hatcheries; Rearing; Food organisms; Nutritional requirements; Diets; Larvae; Survival.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1421.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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Impact of intensive larval rearing practices in oyster hatcheries : selective processes and loss of genetic variability (Poster) ArchiMer
Taris, Nicolas; Sauvage, Christopher; Boudry, Pierre.
Early-life history of oysters, like in most marine bivalves, is characterized by high fecundity and low survival rate. In hatcheries, which are ecoming more and more important for the production of juveniles for aquaculture production, rearing conditions are optimised (density, feeding, temperature...), and contrast with those observed in the wild. Additionally, slow growing larvae are culled by sieving.
Tipo: Text Palavras-chave: Crassostrea gigas; Juvenile; Genetic variability; Selection; Genetic; Hatcheries; Oyster.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/acte-3444.pdf
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Impact of intensive larval rearing practices in oyster hatcheries : selective processes and loss of genetic variability (slides) ArchiMer
Taris, Nicolas; Sauvage, Christopher; Boudry, Pierre.
Oysters, like many marine bivalves, are characterized by very high fecundity and low survival rate at early stages of life. Rearing conditions in hatcheries (i.e. density, feeding, temperature...) are different from those observed in the wild. Additionally, slow growing larvae are culled by sieving. As previous studies have shown that genetic variability exists for several early development traits, we aimed to assess if common hatchery rearing practices exert specific selective processes at the larval stage. In order to avoid possible bias and to increase the number of families studied, we used a mixed-family approach with subsequent parentage analysis using a recently developed set of three multiplexed microsatellite markers. We studied the variance in...
Tipo: Text Palavras-chave: Hatcheries; Selection; Genetic drift; Genetic; Crassotrea gigas; Pacific oysters.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/acte-3483.pdf
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Influence de la temperature sur la differentiation sexuelle des gonades chez la tortue luth (Dermochelys coriacea ); etude en incubation artificielle et naturelle ArchiMer
Rimblot, F; Fretey, J; Lescure, J; Pieau, C.
Sexual differentiation of the marine leatherback turtle is sensitive to temperature. Incubation of eggs below 29 degree C results in 100% males, whereas incubationa bove 30 degree C results in 100% potential females at hatching. Therefore, the threshold temperature lies between 29 and 30 degree C as has been found for other marine turtles (Caretta caretta, Chelonia mydas ). Among hatchlings from natural nests in French Guiana, 10% were males, 20% were potential females and 70% had an intermediate phenotype. The sand temperature at 60 cm of depth, near one nest, was recorded and was found to vary between 29 and 30 degree C during the presumed thermosensitive period. These results will be useful to marine turtle hatcheries which seek to manipulate sex ratios...
Tipo: Text Palavras-chave: Dermochelys coriacea; Chelonia mydas; Reptilia; Hatcheries; Natural populations; Incubation; Turtle culture; Eggs; Temperature effects; Sexual dimorphism.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1241.pdf
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La densite, un critere de qualite applicable en ecloserie aux embryos de Pecten maximus (mollusque bivalve) ArchiMer
Faure, Catherine; Devauchelle, Nicole; Dorange, Germaine.
The quality of the scallop embryos is determined by the spawners characteristics as well as by the external factors they support during the maturation and the spawning phases. All these parameters are not still well controlled during the artificial conditioning in the hatcheries. As a consequence, the quality of the embryos is drastically variable and with them, the larvae performances in terms of survival and growth rates. It would be interesting to get a simple and quick test which would allow the estimation of the spawns quality. The embryos density, evaluated by isopycnic centrifugation of Percoll medium, is well adapted to this objective. Actually, a centrifugation of embryos two hours after fertilization separates them in 3 stratum with their density...
Tipo: Text Palavras-chave: Pecten maximus; Bivalvia; Quality; Survival; Larvae; Growth; Sexual maturity; Spawning populations; Spawning; Embryos; Hatcheries.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/acte-915.pdf
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L'aquaculture du Macrobrachium rosenbergii aux Antilles Francaises ArchiMer
Lacroix, Denis.
The aquaculture of Macrobrachium rosenbergii is launched in Martinigue by the regional council in 1976. A first "green water" type hatchery is built and provides juveniles to the first ponds. In 1978, CNEXO is asked to cooperate in scientific assistance. A new hatchery is built with COP "clear water" system and produces in 1980. The development of ponds (20 ha) needs the increase of the hatcheries capacity, which is now done with one single method and intensive larval first stage (7-8 millions PL. cap). In Guadeloupe, the first ponds started in 1978. Two cooperatives and 11 ha of ponds at this time have determined the construction of CNEXO in the construction of a regional hatchery. A small light one is already under production since July 83.
Tipo: Text Palavras-chave: Macrobrachium rosenbergii; Malacostraca; Growth; Hatcheries; Aquaculture systems; Aquaculture development; Guadeloupe; Production Martinique; Grossissement; Écloserie; Macrobrachium.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1194.pdf
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L'unite d'ecophysiologie et de molysmologie larvaire des bivalves d'interet commercial du laboratoire I.S.T.P.M. d'Arcachon. ArchiMer
Robert, René; His, Edouard; Maurer, Danièle.
An experimental hatchery for bivalves and the different techniques used in Arcachon are described: sea water treatment, phytoplankton culture, conditionning of oysters for spawning and larval culture. This experimental unit has been organised to study the reasons why natural reproduction is disturbed in the bay. The quality of the oysters and the sea water was analysed to ascertain their capacity to acquire normal oyster development. Also, the influence of different micropollutants which may disturb the environment were studied. Observations during larval stage at various concentrations of chemicals include: percentages of fertilized eggs; percentage of D larvae former; percentages of normal and surviving larvae, larval growth, establishing growth curves...
Tipo: Text Palavras-chave: Bivalvia; Experimental research; Hatcheries; Larval development; Sexual reproduction; Oyster culture; Research programs.
Ano: 1981 URL: http://archimer.ifremer.fr/doc/1981/publication-1894.pdf
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Manipulated yeast diets as a partial algal substitute for the nursery culture of the hard clam <i>Mercenaria mercenaria</i> OMA
Coutteau, P.; Hadley, N.H.; Manzi, J.; Sorgeloos, P..
Rearing bivalve molluscs in commercial hatchery and nursery systems has so far relied on the production of live algae, which is costly and often unpredictable. Therefore the development of satisfactory artificial diet would greatly reduce the operating costs of bivalve operations. The development of techniques to improve the nutritional composition and digestibility of yeasts resulted in a product with great potential as a substitute for unicellular algae. Previous work on the Manila clam <i>Tapes semidecussata</i> showed that replacing 80% of the algae by these manipulated yeasts resulted in growth rates of 64 to 93% in comparison with the growth rate obtained for the algal control. In the present study a standard culture test for evaluating...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Clam culture; Diets; Feed composition; Feeding experiments; Food preferences; Hatcheries; Invertebrate larvae; Rearing.
Ano: 1991 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2809
Registros recuperados: 27
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