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| Registros recuperados: 24 | |
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| 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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| Noffs,André Pedro; Tachibana,Leonardo; Santos,Antenor Aguiar; Ranzani-Paiva,Maria José Tavares. |
| The objective of this work was to evaluate the addition of Bacillus subtilis probiotic to the feed of common snook (Centropomus undecimalis) fingerlings, in alternate and continuous regimens. Six hundred and sixty fish, with average length of 5.90±0.88 cm and weight of 1.92±0.28 g, were stocked in 12 cages of 1.0 m3, with 55 fish each. The experimental design was completely randomized, with three treatments and four replicates. The treatments consisted of diet with the addition of probiotic, provided in alternate regimen for 7 days and in continuous regimen; besides a control without probiotic in the feed. Zootechnical performance, body composition, immune response, and blood parameters were evaluated. No significant differences were observed in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacillus subtilis; Centropomus undecimalis; Hematology; Immunostimulant; Marine aquaculture; Respiratory burst.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000400267 |
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| Fraysse, C.; Petraroia, A.. |
| Mariculture in Argentina has expanded over the last years. Flounders of the Paralichtydae family are a very important fishery resource due to their abundance, meat quality, and high market price. The first mass production of juveniles of Paralichthys orbignyanus in captivity was successfully performed in 2002 at the Estación Experimental de Maricultura (EEM), Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), Mar del Plata. Moreover, it has got potential as a species for cultivation, due to its behaviour in captivity, good growth, survival and feed conversion rates. In this study, the parameters that affect this flounder cultivation under controlled conditions and in closed recirculating seawater system, are presented. Temperature, pH, and... |
| Tipo: Theses and Dissertations |
Palavras-chave: Fish culture; Controlled conditions; Recirculating systems; Juveniles; Marine aquaculture. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5445 |
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| Camacho, Olga; Montaña Fernández, Julián. |
| Con el fin de proporcionar información sobre cultivos macroalgales en Colombia, se realizaron ensayos de cultivo en medio natural del alga roja Hypnea musciformis. El estudio se desarrolló entre febrero-junio de 2006 en la zona costera de Santa Marta, Caribe colombiano. Los ensayos se hicieron utilizando bolsas de polipropileno suspendidas en una línea superficial en el mar, considerando: lugar (Taganga y Puerto Luz), época climática (seca mayor y lluviosa menor) y tiempo de cosecha (semanal y quincenal). Se obtuvo en promedio total una tasa de crecimiento diaria (TCD) de 2.66 %. No se encontraron diferencias significativas entre los ensayos desarrollados; sin embargo, los mejores resultados se obtuvieron en Taganga en los ensayos semanales durante la... |
| Tipo: Journal Contribution |
Palavras-chave: Algal culture; Aquaculture techniques; Marine aquaculture; Hypnea musciformis. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/4429 |
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| Aristizabal, E.O.. |
| Spontaneous spawning of red porgy was achieved in captivity by using photoperiod and temperature control systems along the year. During a four-month reproduction period females released in average about 0.2 times their own body weight in oocytes with an energy content of 5.71 J mg-1 wet weight. A total of 28.8 x 106 eggs and approximately 200 g of viable eggs (wet weight) per female kg were obtained. The eggs and larvae quality in terms of hatching and larval survival rates experienced a significant variation during the spawning season ranging between 0%-92% and 0.3%-33.2% respectively. Comments in reference to the probable causes of these variations and the need of carrying on with this line of research are presented. |
| Tipo: Journal Contribution |
Palavras-chave: Fish culture; Marine aquaculture; Spawning seasons; Fish culture; Http://aims.fao.org/aos/agrovoc/c_2918. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/1569 |
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| Jacq, E; Moal, Jeanne; Samain, Jean-francois; Corre, S; Daniel, J; Nicolas, Jean-louis; Cochard, Jean-claude; Fera, P. |
| Larval rearings were performed with seawater either freshly pumped or after storage in a pond. Concerning bacterial populations these waters were characterized by a high diversity, little sized bacteria whose few of them (1%) were cultivable on Zobell medium. In the tanks, the bacterial ecosystem was modified by the presence of antibiotics, larvae and algae: the diversity was lowered, the cellular volume was increased by a factor 2 to 5, 100% bacteria were cultivable and chloramphenicol resistant, and their metabolism changed. Taxonomic screening showed no differences among the two waters neither at the beginning nor at the end of the rearings. However, depending on the water (stored or not) differences were identified for bacterial physiology and... |
| Tipo: Text |
Palavras-chave: Marine aquaculture; Pond culture; Scallop culture; Ecology; Antibiotics; Organic matter; Grazing; Carbohydrates; Mathematical models; Modelling; Growth; Bacterial diseases; Biological production; Culture tanks; Larvae; Rearing. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/1992/acte-914.pdf |
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| Radonic, M.; López, A.V.; Oka, M.; Aristizabal, E.O.. |
| Assessment of egg quality at early embryonic stages may be useful predictive criterion to evaluate the potential mass juvenile production in red porgy Pagrus pagrus. The objective of the present study is to describe in detail the embryonic developmental stages in the red porgy and the time taken by larvae to hatch at three incubation temperatures. Fertilized eggs obtained from natural spawnings were incubated at 15, 20 and 25°C. Photomicrographs of all the embryonic stages were taken at the three temperatures. Cell divisions after fertilization and organ appearance during the embryonic development were identified. The sequence in cellular divisions and appearance of sensory and motor organs were the same for the three temperatures, although the higher the... |
| Tipo: Journal Contribution |
Palavras-chave: Marine aquaculture; Marine fish. |
| Ano: 2005 |
URL: http://hdl.handle.net/1834/1404 |
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| Azaza, M.S.; Mensi, F.; Imouri Toko, I.; Dhraief, M.N.; Abdelmouleh, A.; Brini, B.; Kraiem, M.M.. |
| Afin de réduire le coût des aliments aquacoles, nous avons procédé à la substitution d’une matière première végétale importée: le tourteau de soja (TS) par un sous produit local : la farine de tomate (FT). L’expérience est menée sur des juvéniles de Tilapia (Oreochromis niloticus) monosexe mâle ayant un poids moyen initial de 20,54 ± 0,08 g. (poids moyen ± ES), et elle consiste à tester 4 régimes alimentaires isoprotéiques (27 % de protéines) et isoénergétiques (17 KJ/g) contenant différents taux de farine de tomate: 0 % (aliment témoin), 10 %, 20 % et 30 % noté respectivement A0, A10, A20 et A30. Ces aliments sont testés, durant 75 jours. A la fin de l’expérience les poids moyens finaux ont atteint des valeurs comprises entre 98,62 g et 129,77 g selon... |
| Tipo: Journal Contribution |
Palavras-chave: Diets; Digestibility; Feed efficiency; Feeding experiments; Fish culture; Growth; Marine aquaculture; Nutrition; Oreochromis niloticus; Http://aims.fao.org/aos/agrovoc/c_34687. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/4238 |
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| Zouari, M.; Hitonori, N.; Lymayem, Y.; M'Rabet, R.; Dhraief, M.N.; Missaoui, H.; Guergej, H.; Kraiem, M.M.. |
| Le potentiel de grossissement de la palourde Ruditapes decussatus (L. 1758), élevée dans des poches de filet de 1 m2 de surface, a été évalué sur l’estran de Zarat (golfe de Gabès) pour la période de juillet 2006 à novembre 2007. Dans une première expérience, trois niveaux de la marée, représentant des chenaux de drainage de l’eau, existants entre la ligne de marée haute et celle de marée basse, ont été comparés sur une durée de 16 mois. Chacun des niveaux a été représenté par un triplicata de sacs de 150 individus. Dans une seconde expérience, trois densités de mise en charge différentes ont été comparées sur une durée de 17 mois. Pour cela, deux sacs de 100 individus chacun et deux autres de 200 individus chacun ont été alignés à l’expérience précédente,... |
| Tipo: Journal Contribution |
Palavras-chave: Clam culture; Comparative studies; Environmental conditions; Estuaries; Experimental culture; Growth; Growth rate; Marine aquaculture; Marine molluscs; Population density; Rearing; Stocking density; Clams. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/4495 |
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| Garcés, Y.; Betanzos, A.; Lopeztegui, A.; Artiles, A.. |
| The aim of this work was to analyze hydrological condition variations in Cienfuegos’ Bay in 2011 and its possible influence in life cycle and distribution of the green mussel Perna viridis. The hydrological parameters in the bay are described according to the campaigns performed in February, May and November. Samples from two levels (surface and bottom) were taken, in order to get water temperature, salinity and dissolved oxygen. The results show the climatic seasonality influence (dry and rain) both in spatial as well as in vertical distribution of the observed parameters. The mean concentrations of the analyzed hydrological markers were in agreement with the NC 25: 1999 requirements of good quality water for fishing use. The observed hydrological... |
| Tipo: Journal Contribution |
Palavras-chave: Marine aquaculture; Temperature; Parameters; Environmental conditions; Salinity effects. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/5349 |
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| Bruni, V; Crisafi, E; Maugeri, T; Zaccone, R. |
| 110 Vibrio strains were isolated, at various times of the year, from samples of sea-water supply, breeding-tank water and discarded fish used as food at the breeding stations. From the results obtained by the biochemical and cultural tests, it was possible to identify most of the isolated strains as Vibrio anguillarum . Strains with intermediate characteristics, above-all positive saccharose, proved to be numerous. The authors discuss the occurrence, in particular environments such as those being studied, of atypical or intermediate vibrio strains which are difficult to classify. |
| Tipo: Text |
Palavras-chave: Vibrio; Microbiological culture; Bacteria; Food; Minced products; Fish ponds; Sea water; Identification; Marine aquaculture; Bacteria collecting devices; Microbiological analysis. |
| Ano: 1984 |
URL: http://archimer.ifremer.fr/doc/1984/acte-997.pdf |
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| De Pauw, N.; Verboven, J.; Claus, C.. |
| The feasibility of large-scale bloom induction of nutritionally suited natural phytoplankton species, to feed a semi-industrial nursery of edible shellfish, built on the Belgian coast, was tested. The outdoor microalgal production unit consisted of four tanks of 100 m² surface each (two of 1 m depth and two of 0.5 m depth), equipped with different mixing devices. The cultures were run as chemostats in which seawater was enriched with commercial inorganic N, P and Si fertilizers. Depending on the season, between 5-10 and 80% of the culture volume could be harvested daily, with algal densities ranging from 50,000 to 500,000 cells per ml. By manipulation of operational parameters such as detention time, nutrient levels and nutrient ratios (N: Si: P), unsuited... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Algal culture; Marine aquaculture; Mass culture; Mollusc culture; Rearing; Chaetoceros; Chlorella; Nitzchia; Phaeodactylum; Skeletonema. |
| Ano: 1983 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3395 |
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| Registros recuperados: 24 | |
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