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Registros recuperados: 122
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Interaction between feeding rate and area for periphyton in culture of Nile tilapia juveniles - doi: 10.4025/actascianimsci.v34i2.12469 Animal Sciences
Rebouças, Vanessa Tomaz; Universidade Federal do Ceará; Caldini, Nayara Nunes; Universidade Federal do Ceará; Cavalcante, Davi de Holanda; Universidade Federal do Ceará; Silva, Francisco Jackes Rodrigues da; Universidade Federal do Ceará; Sá, Marcelo Vinícius do Carmo e; Universidade Federal do Ceará.
The objective of the present work was to determine the effects of the interaction between feeding rate and area for periphyton in rearing aquaria for Nile tilapia. Twenty 25 L polyethylene outdoor aquaria were used to hold experimental fish. Three tilapia fingerlings (2.56 ± 0.14 g) were stocked in each aquarium for five weeks (12 fish m-2). There were two different feeding rates (full and full minus 30%) and two submerged areas for periphyton development (59.4% and 96.5% of the aquarium surface area; n = 5). Final body weight, specific growth rate and yield in the 96.5%-area aquaria of fish submitted to 30% less feed were significantly higher than in the 96.5%-area aquaria submitted to full feeding rates. Fish growth in the restricted-feed aquaria was...
Palavras-chave: Tilapia; Fish culture; Semi-intensive system; Productivity; Water quality.
Ano: 2012 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/12469
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La pisciculture marine : un secteur industriel en émergence ArchiMer
Paquotte, Philippe; Harache, Yves.
In a general context of low progression, European aquaculture has been characterized by the development of intensive fish farming. The most notable fact is the recent increase in intensive salmonid farming, with a turnover of almost two million ECU. More recently, the intensive farming of sea bass and sea bream has increased very rapidly in the Mediterranean Basin, although on a more reduced extent. Although research has started as soon as the seventies with a strong public incentive both for salmon, sea bass and sea bream, the development of these different types of aquaculture has not been done at the same pace. Some elements of sectorial dynamics are analysed such as research planning and financing, organization of the production and public policy. For...
Tipo: Text Palavras-chave: Europe; Environmental protection; Economic development; Production structure markets; Saltwater fishes; Sea bream; Sea bass; Atlantic salmon; Marine environment; Fish culture; SEM; Europe; Protection de l'environnement; Développement économique; Marché; Structure de production; Poisson de mer; Dorade; Bar; Saumon atlantique; Milieu marin; Pisciculture.
Ano: 1996 URL: http://archimer.ifremer.fr/doc/1996/publication-4104.pdf
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Lab-scale periphyton-based system for fish culture Ciência Rural
Cavalcante,Davi de Holanda; Silva,Suzete Roberta da; Pinheiro,Paloma Damasceno; Martins,Ádila da Cunha; Sá,Marcelo Vinícius do Carmo e.
The present research aimed to assess a lab-scale model to study periphyton-based systems for fish culture. Twenty-five liters plastic aquaria were stocked with three Nile tilapia, Oreochromis niloticus, juveniles (0.77±0.09g; 12 fish m-2) for 6 weeks in a 2x2 factorial design. Small plastic bottles were placed in some aquaria for periphyton development. Two feeding regimes were employed: "full-fed" (standard feeding rates were fully adopted) and "half-fed" (50% of standard feeding rates). Growth performance and limnological variables were observed in each aquarium. There werefive replicates per treatment. Fish have fed actively on periphyton, especially in the half-fed aquaria. The placement of periphyton bottles had no significant effects on the water...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Periphyton; Tilapia; Feeding restriction; Fish culture.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011001200022
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L'activite de deplacement et le reperage de la nourriture chez le bar juvenile captif ArchiMer
Anthouard, M; Paris, J.
Movement activity and localization of food were studied dynamically with the objective of establishing the capacities of behavioral adaptation of the young Dicentrarchus labrax faced with a novel situation. The role played by previous rearing conditions was demonstrated, the level of stimulation being a sensitive intervening factor (currents associated with the food). The data show the favourable effects of such treatment, and are in agreement with work carried out on higher vertebrates, which have brought to light the importance of early stimulation in behavioral ontogeny which respect to emotionality as well as capacities of adaptation in subjects reaching adulthood.
Tipo: Text Palavras-chave: Dicentrarchus labrax; Serranidae; Pisces; Juveniles; Stimuli; Locating; Locomotion; Fish culture; Nutrition; Ethology.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1253.pdf
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Le thon rouge (Thunnus thynnus thynnus L. 1758) des eaux tunisiennes Etats des lieux, pêche et activités d’engraissement OceanDocs
Hattour, A..
L’engraissement du thon rouge a connu un regain d’intérêt depuis le boom économique japonais i.e. vers le milieu des années 70. A cette époque les projections ont mis en évidence que la production mondiale ne suffirait plus à satisfaire le marché japonais. C’est ce constat qui a amené les grandes firmes japonaises à réfléchir sur l’engraissement du thon rouge. Cette technologie fût exportée en Espagne où l’activité a démarré effectivement au début des années 1990 pour atteindre son apogée vers les années 1996-1997. Plusieurs pays méditerranéens ont suivi le pas de l’Espagne à l’image de la Croatie, Malte, Chypre, Italie, etc., En Tunisie, pendant les six dernières années (2003-2008) l’activité d’engraissement du thon rouge (BFT) a atteint voire dépassé...
Tipo: Journal Contribution Palavras-chave: Purse seines; Cages; Fish culture; Tuna; Environmental impact.
Ano: 2011 URL: http://hdl.handle.net/1834/4735
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L'interaction hôte-parasite en aquaculture : cas du charax, diplodus puntazzo (pisces, sparidae) infesté par myxidium leei (myxozoa) OceanDocs
Tarer, V.; Marques, A.; Raymond, J. Ch..
Un échantillonnage de poissons parasités (Diplodus puntazzo) en provenance d’une firme aquacole située au Sud-est de la Corse (Ouest méditerranéen) montre une infestation due à un Myxidium leei. Le parasite envahit l’épithélium intestinal causant amaigrissement du poisson et une forte mortalité. Les spécimens de plus de 16 cm de longueur totale étaient significativement moins infestés. Toutefois, l’infestation ne montre pas de différence significative entre mâles et femelles quelle que soit la taille des spécimens. Quelques paramètres hématologiques ont été utilisés pour montrer le rôle du parasite dans cette maladie de poissons et statuer sur l’interaction hôte-parasite.
Tipo: Journal Contribution Palavras-chave: Fish diseases; Interactions; Parasitic diseases; Hosts; Aquaculture; Parasitism; Fish culture.
Ano: 2000 URL: http://hdl.handle.net/1834/4291
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Liquid chromatographic determination of efficacy of incorporation of trimethoprim and sulfamethoxazole in brine shrimp (<i>Artemia</i> spp.) used for prophylactic chemotherapy of fish OMA
Nelis, H.; Léger, P.; Sorgeloos, P.; De Leenheer, A.P..
The brine shrimp <i>Artemia</i> , an excellent live food source in aquaculture, has been studied as a carrier to deliver selected chemotherapeutic agents to fish for prophylactic treatment of infectious diseases. To monitor the efficiency of incorporation of trimethoprim and sulfamethoxazole in <i><i>Artemia</i> franciscana</i>, a sensitive and specific analytical method was developed. It is based on homogenization of <i>Artemia</i> nauplii in methanol, extraction of lipids with hexane, solid-phase cleanup on C<sub>18</sub> cartridges, and reversed-phase liquid chromatography with detection at 210 nm. The method is sensitive (detection limit, on the order of 3 µg/g with a sample quantity of 30 mg...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquaculture techniques; Fish culture; Infectious diseases; Medicine; Artemia.
Ano: 1991 URL: http://www.vliz.be/imisdocs/publications/262329.pdf
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Live-food mediated drug delivery as a tool for disease treatment in larviculture: 2. A case study with European seabass OMA
Chair, M.; Romdhane, M.S.; Dehasque, M.; Nelis, H.; De Leenheer, A.P.; Sorgeloos, P..
The purpose of this study is to investigate the possibility of oral delivery of the antibiotics Trimethoprim (TMP) and Sulfamethoxazole (SMX) to marine fish larvae through incorporation of these antibiotics into the live food organism <i>Artemia</i>. SMX and TMP were selected for their wide range action against gram negative pathogenic bacteria and because of their limited solubility in seawater. Ormetoprim-Sulfadimethoxine (brand name Romet-30) is a new combination of a similar antimicrobial drug used in aquaculture. Diseased penaeid larvae fed Romet-30 through the food chain exhibited greater survival than the untreated ones. In an earlier study Verpraet have described a technique for bioencapsulating high doses of more than 500 mu g TMP +...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antibiotics; Aquaculture techniques; Disease control; Fish culture; Fish larvae; Food additives; Food organisms; Dicentrarchus labrax [Bass].
Ano: 1991 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2805
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Low water quality in tropical fishponds in southeastern Brazil Anais da ABC (AABC)
COSTA,SIMONE M.; APPEL,ELEONORA; MACEDO,CARLA F.; HUSZAR,VERA L.M..
Expansion of aquaculture around the world has heavily impacted the environment. Because fertilizers are needed to raise fish, one of the main impacts is eutrophication, which lowers water quality and increases the frequency of algal blooms, mostly cyanobacteria. To evaluate whether the water quality in 30 fishponds in southeastern Brazilian met the requirements of Brazilian legislation, we analyzed biotic and abiotic water conditions. We expected that the high nutrient levels due to fertilization would cause low water quality. We also analyzed cyanotoxins in seston and fish muscle in some systems where cyanobacteria were dominant. The fishponds ranged from eutrophic and hypereutrophic with high phytoplankton biomass. Although cyanobacteria were dominant in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cyanobacteria; Cyanotoxins; Eutrophication; Fish culture.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301181
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Maduración y desove del pargo amarillo Lutjanus argentiventris (Peters, 1869) en condiciones controladas de temperatura y fotoperíodo OceanDocs
Martínez, R.A..
El cultivo de peces marinos ha atraído considerable atención en la última década, experimentando un gran auge en años recientes. Esto se debe principalmente al desarrollo y optimización de la tecnología de cultivo en jaulas, como también al mejoramiento de las técnicas de producción de juveniles, lo que ha incrementado el número de especies para las cuales existen cultivos de orientación comercial. En las circunstancias actuales, para que el cultivo de peces sea rentable es necesario controlar todas las fases del ciclo vital de la especie. En el presente trabajo se abordó esta problemática a través de estudios enfocados a la maduración gonadal y desove a través de tratamientos de temperatura y fotoperíodo denominados no invasivos. En el primer experimento...
Tipo: Theses and Dissertations Palavras-chave: 959; Temperature; Lipids; Photoperiods; Marine fish; Fish culture; Fish culture; Temperature; Lipids; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_7657; Http://aims.fao.org/aos/agrovoc/c_4362.
Ano: 2003 URL: http://hdl.handle.net/1834/3445
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Manual de métodos parasitológicos e histopatológicos en piscicultura OceanDocs
Keim, Albert.
Recientes problemas provocados por epiemias de infecciones de Ichthyophthirius multifiliie en la cría de bagre negro (Rhandia sapo) cultivado por el Departamento de Acuicultura del INAPE de Uruguay, y el conocimiento de que todos los piscicultores tienen problemas con los parásitos, constituyeron la base y antecedente para el inicio de un programa de investigaciones parasitológicas. Este programa incluyó. 1) Disección de bagres capturados en Laguna de Sauce y colecta de parásitos. 2) Disección de bagres cultivados en el Laboratorio y en los estanques de INAPE, y colecta de parásitos. 3) Identificación de los parásitos recolectados. 4) Elaboración de un manual que recopila los métodos más comunmente utilizados en parasitología e histopatología en la...
Tipo: Report Palavras-chave: Fish diseases; Parasitic diseases; Fish culture; Parasitology; Histopathology; Manuals; Ichthyophthirius.
Ano: 1982 URL: http://hdl.handle.net/1834/4913
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Marine cage fish farming ArchiMer
Espeut, P.; Harache, Yves; Lemarie, Gilles; Ricard, Jean-marc.
Marine capture fisheries in Jamaica is primarily artisanal in nature ansd is conducted maiinly by fishermen operating from canoes. Approximately 95% of these fishermen operate on the coastal shelf and its associated banks. The commercial species harvested comprise bottom-dwelling, coral reef species and free swimming species of finfish. Other fishery resources of commercial value include marine shrimp, conch and lobsters. Catch statistics are not available for all species, but the Department of Fisheries reports a slight decline in fishery production with production decreasing from 16 milion lbs in 1990, despite the fact that fishing efforts have doubled. Over this period the number of registered fishermen has grown from 12 000 to 16 000, al of whom are...
Tipo: Text Palavras-chave: Aquaculture equipment; Cage culture; Rearing; Marine technology; Fish culture; Jamaica.
Ano: 1993 URL: http://archimer.ifremer.fr/doc/1993/rapport-1918.pdf
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Marine finfish pathology: Specific problems and research in the French West Indies ArchiMer
Gallet Desaint Aurin, D; Raymond, J; Vianas, Viviane.
The finfish species reared in marine intensive conditions in the French Caribbean Islands are imported (European seabass, American red drum and Oreochromis hybrids) or local (Carangids and Lutjanids) species. The European seabass (Dicentrarchus labrax ) is susceptible, during its first year of life, to a contagious disease characterized by whirling and hyperexcitability, associated with severe lesions of the brain, viral particles being pointed out in the damaged nervous cells.
Tipo: Text Palavras-chave: Growth; Hatcheries; Nutrient deficiency; Nutritional requirements; Pathology; Parasitic diseases; Fish culture.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1478.pdf
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Marine fish culture of "new species" farmed in Europe ArchiMer
Suquet, Marc; Divanach, Pascal; Hussenot, Jerome; Coves, Denis; Fauvel, Christian.
In Europe, fish aquaculture in a marine environment developed following two successive waves: Atlantic salmon and then sea-bass and sea-bream. Rearing "new marine fish species" is sustained for many complementary reasons. This paper aims at presenting the aquaculture status of these "new species," research carried out and then problems and perspectives suggested by farming development in these species.
Tipo: Text Palavras-chave: Species; Sea fishes; Fish culture; Europa; Diversification.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6558.pdf
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Marine larval fish rearing ArchiMer
Arnold, C.
Various methods of producing juvenile finfish will be discussed. This includes the intensive production in controlled environments as well as extensive pond production. Factors important to survival such as temperature, salinity, pH, water quality, bacteria and parasites, density, food types and food density as well as information on food and food production will be given.
Tipo: Text Palavras-chave: Fish culture; Aquaculture development; Aquaculture techniques; Rearing.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1445.pdf
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Maturation and spawning of tropical and subtropical marine finfish by environmental manipulations ArchiMer
Roberts Jr, D.
Circannual, diel, and lunal periodic mechanisms in naturally reproducing stocks of tropical and subtropical fishes are reviewed. Manipulations of biological clocks, used to control reproduction in captive broodstocks, are detailed. Experiments to induce controlled maturation and spawning in fishes either test efficacy of changing environmental conditions (regimes), or constant environmental conditions (controlled). Data have been generated in experimental/scientific studies, as well as applied research. Effects of controlled environmental regimes on serum steroids, gametogenesis, spawning, fry performance and egg quality are summarized for selected members of Centropomidae, Serranidae, and Sciaenidae.
Tipo: Text Palavras-chave: Sciaenidae; Serranidae; Centropomidae; Fish culture; Controlled conditions; Sexual maturity; Photoperiods; Fish eggs; Gametogenesis; Steroids; Animal reproductive organs; Brood stocks; Marine fish; Spawning; Sexual reproduction.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1437.pdf
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Metodologia de biomonitoramento aplicada a reservatórios com tanques-rede de piscicultura. Infoteca-e
SILVA, M. S. G. M. e; ROSA, A. J. de M.; RUOCCO, A. M. C.; DIAS, E. S.; KOBAYASHI, J. T..
Resumo: Este documento apresenta as metodologias empregadas nos reservatórios de Ilha Solteira e Chavantes, para avaliação da qualidade da água e do sedimento em áreas aquícolas com tanques-rede. Tal pesquisa é parte do Projeto BRS Aqua, Plano de Ação "Protocolo de Biomonitoramento em reservatórios com atividade de aquicultura baseado em insetos aquáticos", cujo objetivo final é a proposição de um protocolo de biomonitoramento para as áreas estudadas e está relacionado ao Objetivo de Desenvolvimento Sustentável da ONU (ODS 6), meta 6.3: "Até 2030, melhorar a qualidade da água, reduzindo a poluição, eliminando despejo e minimizando a liberação de produtos químicos e materiais perigosos, reduzindo à metade a proporção de águas residuais não tratadas e...
Tipo: Documentos (INFOTECA-E) Palavras-chave: Biomonitoramento; Tanque-rede; Qualidade da Água; Piscicultura; Reservatório de Água; Tanque; Water quality; Water quality analysis; Fish culture; Water reservoirs; Aquaculture tanks; Environmental monitoring.
Ano: 2021 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1131496
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Morphological development of the mouth and improvement in feeding ability in the early larval stages of red porgy, Pagrus pagrus (L.) OceanDocs
Aristizabal, E.O..
The appearance, ossification and growth of cartilaginous structures of the mouth in early larval stages of laboratory reared red porgy Pagrus pagrus, were examined. At the time of mouth opening, red porgy larvae are equipped with the fundamental components of the oral cavity to allow the sucking motion for acquiring food. During the initial feeding stage, from day 5 after hatching (AH) to day 7 AH, the hyoid and lower branchial archs were completed, and the head length and other structural elements, like the ceratohyal-epihyal cartilage, increased rapidly. These events intensified sucking mechanisms by increasing the amount of ingested rotifers. After day 13 AH, the presence of the bony premaxilla and angular, the ossification of the Meckels cartilage and...
Tipo: Journal Contribution Palavras-chave: Marine aquaculture; Fish culture; Fish larvae; Osteology; Fish culture; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_2924.
Ano: 2005 URL: http://hdl.handle.net/1834/1560
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(n-3) HUFA composition of freshly spawned eggs from European seabass (<i>Dicentrarchus labrax</i>), seabream (<i>Sparus aurata</i>) and red seabream (<i>Pagrus major</i>) collected in different hatcheries OMA
Komis, A.; Léger, P.; Sorgeloos, P..
The biochemical composition of fish eggs is often used as an indicator for assessing the nutritional requirements of aquaculture species during their larval stages. Fatty acids of the (n-3) HUFA type have proven to play a critical role in providing good growth, survival and stress resistance in marine fish larvae. Hence, analyzing these fatty acids in fish eggs may provide interesting data on the requirements for those essential nutrients. By comparing the analyses of wild versus broodstock fish eggs differences may appear, possibly explaining differences in egg quality. Intra-spawning-season differences may further appear by following fatty acid profiles in the course of time. Finally, the influence of broodstock nutritionon egg composition may be another...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Comparative studies; Fatty acids; Fish culture; Fish eggs; Hatcheries; Induced breeding; Dicentrarchus labrax [Bass]; Pagrus major; Sparus aurata [Gilthead].
Ano: 1991 URL: http://www.vliz.be/imisdocs/publications/262325.pdf
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O uso do sulfato de cobre em ecossistemas aquáticos: fatores que afetam sua toxicidade em peixes de água doce. Infoteca-e
SAMPAIO, F. G.; BOIJINK, C. de L.; RANTIN, F. T..
O aumento mundial da contaminação de sistemas de água doce com inúmeros compostos químicos industriais e naturais é hoje um dos principais problemas ambientais.Mineração, emissão de esgoto doméstico, aplicação de fertilizantes e pesticidas degradam severamente os ecossistemas aquáticos com metais pesados. A aquicultura, caracterizada nas últimas décadas como potencial atividade agropecuária não está isenta desta negativa contribuição, uma vez que utiliza, em sua cadeia produtiva, compostos que interferem diretamente na cadeia trófica dos sistemas aquícolas. Dentre os principais produtos utilizados na piscicultura, para contornar as dificuldades no processo produtivo, pode-se citar o sulfato de cobre (CuSO4) que, quando utilizado indevidamente, gera efeitos...
Tipo: Documentos (INFOTECA-E) Palavras-chave: Ecossistema aquático; Aquicultura.; Sulfato de cobre; Poluição da água; Peixe de água doce; Toxidez.; Copper sulfate; Water pollution; Toxicity; Freshwater fish; Fish culture.
Ano: 2013 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/963179
Registros recuperados: 122
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