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Registros recuperados: 119
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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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A simple way of avoiding feed wastage in European seabass, Dicentrarchus labrax, under self-feeding conditions ArchiMer
Coves, Denis; Gasset, Eric; Lemarie, Gilles; Dutto, Gilbert.
Self-feeding systems allow fish to freely express feeding activity. A simple rod at the water surface can act as a trigger and provide fish with a way of obtaining pellets from a feeder. Such a rod presented to experienced European seabass, Dicentrarchus labrax, may lead to feed wastage, probably as a result of unintentional fish contacts with the trigger. Trigger protection screens have been designed to prevent fish contacting the trigger by chance, and the efficacy of such screens was tested. Nocturnal and diurnal feed delivery and feed wasted were compared under conditions where the rod was unprotected or protected by semi-cylindrical or cylindrical screens. Tests were conducted using an unrestricted self-feeding regime (reward: 0.2 g pellet per kg of...
Tipo: Text Palavras-chave: Feeding behaviour; Feed wastage; Self feeding; Fish culture; Comportement alimentaire; Gaspillage d'aliment; Auto alimentation; Élevage de poissons.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/1998/publication-867.pdf
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An oral challenge for turbot larvae with <i>Vibrio anguillarum</i> OMA
Chair, M.; Dehasque, M.; Van Poucke, S.; Nelis, H.; Sorgeloos, P.; De Leenheer, A.P..
There is a need for a standard in vitro procedure to infect larval fish with bacteria. Such a procedure could be used as a tool to evaluate fish quality, verify fish sensitivity to a certain bacterial strain or evaluate the pathogenicity of a bacterium towards a given fish species. The availability of a challenge test is a prerequisite in studies dealing with the effect of different medicinal treatments on diseased fish. An oral challenge test would offer the possibility to investigate the routes of infection via the digestive tract, i.e. after feeding contaminated feeds. The present study aims to verify this hypothesis and proposes a standard challenge procedure for turbot (<i>Scophthalmus maximus</i>) larvae with a pathogenic <i>Vibrio...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacterial diseases; Digestive system; Disease control; Fish culture; Fish diseases; Fish larvae; Marine fish; Pathogenic bacteria; Vibrio anguillarum.
Ano: 1994 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2552
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Aquaculture in Hawaii: Past, present, and future ArchiMer
Wyban, J; Wyban, C.
Hawaii's aquaculture industry has a long and colorful history. When Cook arrived in Hawaii in 1778, over 350 fishponds were in operation. Future prospects for Hawaii's industry are bright. Expanded R&D activities have the greatest growth potential with technology transfer through international consulting and training likely. Commercial activities will focus on intensive culture of shrimp, finfish and seaweeds.
Tipo: Text Palavras-chave: Intensive culture; Fish culture; Shrimp culture.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1497.pdf
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Aquicultura: manejo e aproveitamento de efluentes. Infoteca-e
SILVA, M. S. G. M. e; LOSEKANN, M. E.; HISANO, H..
Resumo: O trabalho aborda inicialmente o panorama atual da aquicultura mundial, enfatizando o crescimento da produção da ordem de 3,2% no período de 1961-2009, e da brasileira, na qual houve um incremento de 40% nas atividades aquícolas continentais durante os anos 2008-2010. No entanto, esta evolução numérica nem sempre foi acompanhada de práticas de manejo sustentáveis dos efluentes gerados, o que compromete a qualidade da água. Com o propósito de orientar na gestão sustentável da água utilizada nas atividades aquícolas, bem como dos resíduos gerados, são apresentados métodos de tratamento da água usada na produção, notadamente os naturais, como os biofiltros e aplicação de efluentes no solo (fertirrigação). A aquaponia ? integração da aquicultura com a...
Tipo: Documentos (INFOTECA-E) Palavras-chave: Efluentes; Hidroponia.; Aquicultura; Impacto ambiental; Desenvolvimento sustentável; Piscicultura; Qualidade da água; Tratamento da água.; Aquaculture; Fish culture; Effluents; Environmental impact; Water quality; Aquaponics.
Ano: 2013 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/972692
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Aspectos biológicos y conductuales del estadio infectante de Caligus rogercresseyi Boxhall & Bravo 2000 (Copepoda: Caligidae), en peces nativos y de cultivo de Chile OceanDocs
Farias Aqueveque, D.R..
El impacto nocivo producido por Caligus rogercresseyi en los centros de cultivo de salmónidos en el sur de Chile ha ido en aumento, por lo que es necesario tener un mejor conocimiento de la especie para poder combatirla haciendo énfasis en la etapa infectante de ésta, el estadío copepodito. Este estudio aporta conocimientos biológicos y conductuales de éste estadío frente al estímulo de tres especies de hospederos; Salmo salar, especie de cultivo, y Eleginops maclovinus e Hypsoblennius sordidus, ambas especies nativas. Se realizaron tres experimentos, dos de ellos basados en los estímulos atractantes emanados del pez hospedero, controlados mediante la formación del filamento frontal de adhesión y respuestas conductuales frente a este estímulo mediante un...
Tipo: Theses and Dissertations Palavras-chave: Fish culture; Ectoparasites; Fish diseases.
Ano: 2005 URL: http://hdl.handle.net/1834/4900
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Atelier de Kayar OceanDocs
Dioh, B.; Ndiaye, O.; Sané, K.; Diouf, P.S..
ATELIER DE FORMATION SUR L'APPLICATION DES LOIS ET REGLEMENTS AU CONTEXTE DE LA PECHERIE MARITIME DE KAYAR Introduction Dans le programme de conservation des écosystèmes marins et côtiers de I'Akique de I'Ouest du World Wide Fund for Nature (WWF), Kayar a été retenu comme site où des activités de terrain doivent être menées. Dans le but de former et de sensibiliser les acteurs chargés de I'application des lois et règlements relatifs à la pêche et ceux à qui cette réglementation s'applique, une séance de vulgarisation des lois et règlements régissant la pêche au Sénégal a été organisée le 26 juillet 2002 à Kayar. Aprés la cérémonie d'ouverture, Messieurs Ousmane NDIAYE, Chef de la division pêche artisanale à la Direction de l'océanographie et des pêches...
Tipo: Proceedings Paper Palavras-chave: Fish consumption; Fish counters; Fish culture; Law of the sea; Licences; Fish culture; Licences; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_4313.
Ano: 2002 URL: http://hdl.handle.net/1834/1709
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Au front, bulletin d'information du projet Evaluation et Gestion des Ressources halieutiques de la République du Sénégal OceanDocs
Bulletin d'information du projet Evaluation et Gestion des Ressources Halieutiques au Sénégal
Tipo: Other Palavras-chave: Fish culture; Fish consumption; Fish; Fish conversion factors; Fish catch statistics; Fishery management; Fishery biology; Fish; Fish culture; Fishery management; Fishery biology.
Ano: 2004 URL: http://hdl.handle.net/1834/1483
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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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Bacteries ichtyopathogenes en mariculture ArchiMer
Vigneulle, Martine.
Bacterial infections occurred during the development of marine fish farming of species such as turbot, sea-bass, sea-bream or salmon and trout. The main-specific bacteria involved in these diseases observed belong to 3 groups: the Vibrionaceae for Vibrio anguillarum (type 408) and Aeromonas salmonicida , the causative agents of respectively vibriosis and furinculosis; the Corynebacteriaceae for Renibacterium salmoninarum , responsible for bacterial kidney disease (BKD), the Enterobacteriaceae for Yersinia ruckeri , the causative agent of enteric redmouth disease. The clinical signs typical of those diseases always depend on the rearing and environmental conditions. The losses resulting from these bacterial diseases and the persistence of the bacteria in...
Tipo: Text Palavras-chave: Yersinia ruckeri; Renibacterium salmoninarum; Aeromonas salmonicida; Vibrio anguillarum; Bacteria; Bacterial diseases; Fish culture; Pathogenic bacteria.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-996.pdf
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Bioenergética del besugo Pagrus pagrus. OceanDocs
Aristizabal, E.O..
The utilization of the energy of food by red porgy (Pagrus pagrus Linnaeus, 1758) from the Argentine Sea (SW Atlantic) was studied. From the energetic point of view, it is proposed that the strategy of patitioning, utilization and storage of the energy of food, is an indicator of the organism response to the environmental conditions. The main objective was to know the proportion of the energy of food derived to the different components of the bioenergetics budget. In order to estimate the monthly energy investment in reproductive growth, chemical analysis of gonads from fishes caught by the fishery fleet and from laboratory studies were performed. Two indexes were used to calculate the energy investment in female ovaries: the proportion of net daily energy...
Tipo: Theses and Dissertations Palavras-chave: Fish culture; Bioenergetics; Eggs; Fish larvae; Food consumption; Energy budget; Metabolism; Oxygen consumption; Fish culture; Eggs; Food consumption; Metabolism; Fish larvae; Oxygen consumption; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_3016; Http://aims.fao.org/aos/agrovoc/c_4769; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_5478.
Ano: 2003 URL: http://hdl.handle.net/1834/1466
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Biología reproductiva del lenguado Paralichthys orbignyanus: Maduración y potencial reproductivo en ejemplares cultivados y salvajes OceanDocs
Radonic, M..
Intensive culture of teleost fish introduces changes over the environmental conditions found in their spawning grounds, leading to reproductive dysfunctions. The manipulation of these parameters (photoperiod, temperature) represents a common technique to alter the reproductive rhythms and enhance the spawnings in terms of quality and quantity. Nevertheless, for each species some modifications or adjustments have to be done according to their reproductive strategies. The advantages of manipulating those parameters are primarily to schedule the spawning for a desired period of time and to obtain good quality and quantity eggs. Many factors such as tank dimension, light intensity, nutritional status and husbandry of broodfish and minimum stress level have...
Tipo: Theses and Dissertations Palavras-chave: Fish culture; Marine aquaculture; Reproduction; Fecundity; Wild spawning; Brood stocks; Fish culture; Aquaculture; Paralichthys orbignyanus.
Ano: 2011 URL: http://hdl.handle.net/1834/4505
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Boas práticas de manejo para manter concentrações adequadas de oxigênio dissolvido em viveiros de piscicultura. Infoteca-e
QUEIROZ, J. F. de; BOEIRA, R. C..
Este comunicado técnico apresenta um conjunto de Boas Práticas de Manejo (BPM) para manter uma concentração adequada de OD em viveiros de piscicultura, uma vez que a troca de água dos viveiros não é um método efetivo e ambientalmente sustentável, conforme demostrado por meio de alguns exemplos práticos.
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Oxigênio dissolvido; Piscicultura; Viveiro; Qualidade da água; Fish culture; Dissolved oxygen; Water quality; Good aquaculture practices.
Ano: 2016 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1062610
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Boas práticas de manejo para piscicultura em tanques-rede. Infoteca-e
QUEIROZ, J. F. de; ROTTA, M. A..
Resumo: O objetivo desta Circular Técnica é indicar um conjunto de boas práticas de manejo para a produção de peixes em tanques-rede de modo a atender as regulamentações impostas pela Lei 12.651, de 25 de maio de 2012, conhecida como Novo Código Florestal, que dispõe sobre a proteção da vegetação nativa, a adoção de boas práticas agrícolas, como por exemplo, na prevenção dos processos erosivos do solo nas Áreas de Preservação Permanente, de proteção ambiental e da preservação dos recursos hídricos.
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Boas práticas de manejo; Tanques-rede; Piscicultura; Proteção ambiental; Qualidade da água; Tanque; Produtividade; Fish culture; Best management practices; Environmental protection; Water quality.
Ano: 2016 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1060545
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Broodstock management and induced spawning of flounder Paralichthys orbignyanus (Valenciennes, 1839)under a closed recirculated system OceanDocs
Bambill, G.A.; Oka, M.; Radonic, M.; López, A.V.; Müller, M.I.; Boccanfuso, J.; Bianca, F..
The present study was conducted to determine the parameters regulating spawning performance of P. orbignyanus wild broodstock. The adaptation to captivity was successfully achieved with minimal stress levels. In three consecutive spawning seasons, the annual photothermal manipulation was not effective for the maturation and natural spawning of females although males were running. Females were HCG injected, releasing non fertilized eggs. Artificial fertilization was carried out after stripping the fish with a total production of 18,000 fertilized eggs in 2001 (egg diameter=800±10 µm), 55,300 in 2002 (egg diameter= 850±12 µm)and 1,635,000 fertilized eggs in 2003 (egg diameter 818.4 ±30.08 µm, oil drop 98.1 ±2.96 µm). For the study of the ovulationtime,...
Tipo: Journal Contribution Palavras-chave: Fish culture; Marine fish; Brood stocks; Eggs; Induced breeding; Fish culture; Eggs; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_2502.
Ano: 2006 URL: http://hdl.handle.net/1834/1814
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Calcium-free and low-calcium water production for aquaculture research - doi: 10.4025/actascianimsci.v33i1.10686 Animal Sciences
Pinheiro, Paloma Damasceno; Universidade Federal do Ceará; Cavalcante, Davi de Holanda; Universidade Federal do Ceará; Moraes, Manuella Gazzineo de; Universidade Federal do Ceará; Sá, Marcelo Vinícius do Carmo e; Universidade Federal do Ceará.
The present work aimed to obtain a mathematical expression to calculate the amount of EDTA required to produce calcium-free and low-calcium water ([Ca2+] < 5 mg L-1). Initially, a pilot test was carried out to confirm the effectiveness of EDTA as a chelating agent of waterborne calcium and to evaluate its effect on water pH. Five application rates of Na-EDTA (25, 50, 75, 100 and 125 mg L-1) were tested. The concentration of calcium in water was determined initially (before the application of EDTA) and after one hour. Linear regression analysis was performed to find out the relationship between the desired calcium concentration in water and the required EDTA: initial calcium hardness ratio. The expression ŷ = -0.0911x + 3.3628 (R² = 0.933) was derived...
Palavras-chave: EDTA; Calcium hardness; Fish culture EDTA; Calcium hardness; Fish culture.
Ano: 2011 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/10686
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Can a small change in the tilapia’s on-going feeding strategy impair its growth? - doi: 10.4025/actascianimsci.v35i3.18290 Animal Sciences
Caldini, Nayara Nunes; Universidade Federal do Ceará; Pereira, Nayagra Vidal; Universidade Federal do Ceará; Rebouças, Vanessa Tomaz; Universidade Federal do Ceará; Sá, Marcelo Vinícius do Carmo e; UFC.
The aim of the present work was to answer the following question: can a small change in the tilapia’s on-going feeding strategy impair its growth? In the initial phase of the study, fish were evenly distributed and maintained for two weeks in four tanks. In tanks 1 and 2, the ration was given in three equal meals at 8, 12 and 16h or at 9, 13 and 17h, respectively. In tanks 3 and 4, there was only one daily meal at 9 or 10 o’clock, respectively. In the second 8-week phase, fish from tank 1 were distributed into two groups in ten 100-L tanks: the 8-12-16 group, in which fish were always fed at 8, 12 and 16h; and the 8-12-16/9-13-17 group, in which fish were fed at 8, 12 and 16h in the first four weeks and at 9, 13 and 17h in the last four weeks. Fish from...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Feeding schedule; Circadian rhythm; Feeding management; Fish culture Feeding schedule; Circadian rhythm; Feeding management; Fish culture.
Ano: 2013 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18290
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Cepario de microalgas marinas y producción inicial e intermedia de Nannochloropsis oculata (Eustigmatophyceae) en condiciones controladas de laboratorio OceanDocs
López, A.V.; Bocanfusso, J.J..
Collection of microalgae strains and initial and intermediate production of Nannochloropsis oculata (Eustigmatophyceae) under controlled laboratory conditions. Microalgae, as primary producers of the marine trophic pyramid, make up the first link of the food chain in the aquatic environment. In aquaculture, they are the basis of the whole production of marine fish larvae food such as rotifera, copepods and artemias. Within the “Experimental Mariculture and Biology” Program, at the Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), the culture technology of red porgy (Pagrus pagrus) and flounder (Paralichthys orbignyanus) that requires production of microalgae to obtain larvae and juveniles of both species is being developed. The first step...
Tipo: Journal Contribution Palavras-chave: Algal culture; Controlled conditions; Fish culture.
Ano: 2013 URL: http://hdl.handle.net/1834/5507
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Characterization and evaluation of the impact of feed management on the effluents of Nile tilapia (Oreochromis niloticus) culture BABT
Baccarin,Ana Eliza; Camargo,Antonio Fernando Monteiro.
The objective of this study was to evaluate the effect of different feed management on the quality of effluent water generated in Nile tilapia (Oreochromis niloticus) culture ponds. Feed was supplied as follows: natural food, and pelleted, extruded or minced ration. The study was conducted during 19 weeks in 12 continuous water exchange ponds of 300 m² each, with a population of male Nile tilapia juveniles, in a density equal to 1.7 fish m-2. Feeds contained 30% crude protein, 3,000 kcal digestible energy, and were supplied twice a day. Natural food consisted of chicken manure. Temperature, dissolved oxygen, pH, total phosphorus, total nitrogen, chlorophyll a and suspended solids were monitored weekly in the supplying and effluent water. Water residence...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish culture; Environmental impact; Feed management; Effluent.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000100012
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Cofeeding of phospholipids to turbot <i>Scophthalmus maximus</i> L. larvae as a tool to reduce live food consumption OMA
Dhert, P.; González Félix, M.; Van Ryckeghem, K.; Geurden, I.; Thysen, F.; Lebegue, E.; Lavens, P.; Sorgeloos, P..
The possible benefits of feeding a formulated diet, together with <i>Artemia</i> , to first-feeding turbot larvae were investigated. Five dietary regimes were used: control ( <i>Artemia</i> only), cofeeding with a diet rich in phospholipid (PL) from bovine brain, cofeeding with a diet rich in free fatty acids (FFA) from the same source, cofeeding with a commercial diet (Lansy A2), and a formulated feed only (PL-rich diet). All treatments with artificial diets and the control treatment that received <i>Artemia</i> exclusively gave a similar survival rate of the fish at day 29. Cofeeding with artificial diets resulted in a lower growth rate than the control treatment. Cofeeding the larvae with PL-rich or FFA-rich diets did...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquaculture techniques; Feeding experiments; Fish culture; Fish larvae; Food organisms; Scophthalmus maximus; Artemia.
Ano: 1999 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=4014
Registros recuperados: 119
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