SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Sorgeloos, P.; Persoone, G..

The 3 culturing devices described are based on the principle of the classic air-water lift, which facilitates continuous recirculation and aeration of the cultivation medium. The first device is a "circulation cylinder", convenient for hatching eggs of the brine shrimp Artemia salina and for culturing algae and protozoans. In the second device, an internal basket (i.e., a glass cylinder with plankton-gauze bottom) prevents the animals being carried along in the air-water lift. The third device, analogous to the second, is provided with a lateral waste-drain and a water collector with siphon, which empties regularly into the main culture vessel. The second and third devices proved to be excellent for the cultivation of a variety of...

Observaciones sobre embriones de larvas y juveniles de la pescadilla (Cynoscion striatus)

Palavras-chave: Aquaculture; Fish larvae; Instruments; Marine invertebrates.

Ano: 1972

URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3461

de Ciechomski, J.D.; Cassia, M.C..

Observations on the embrionic and larval development of Cynoscion striatus are presented. The description are made on the basis of material obtained by artificial fertilization. Eggs are pelagic, spherical, 700-840µ in diameter and with single oil globule of 210µ-240µ. The yolk is homogeneous and the chorion has smooth surface. The embryonic development is short and at temperatures of 19°-20°C hatching takes place, 34-36 hours after the fertilization. The larvae at hatching are small, about 2 mm in length and not advanced in their development. The mouth is not functional and the anus is not open. The oil globule is situated in the posterior part of the yolk sac; the position of the anus is close to the posterior end of the yolk sac and the digestice tract...

Tipo: Journal Contribution

Palavras-chave: Embryos; Fish larvae; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_2924.

Ano: 1982

URL: http://hdl.handle.net/1834/2045

Sur l'utilisation des criteres comportementaux pour determiner l'etat de sante et l'evolution probable des elevages de poissons marins. 1: Cas des prelarves et des larves de Diplodus sargus, Sparus aurata, Puntazzo puntazzo, Lithognatus mormyrus

Bacteries associees aux production de Brachionus plicatilis

Kentouri, M; Divanach, P.

In aquaculture and particularly during fish larval rearing when the time between moment of stress application and the non-return point acquisition is very limited, criteria which may provide health state and stock evolution are of great importance. Now, in stress responce chronology, the specific behavioral scheme modification is first noted. This early identification, associated with initial conditions restoration, generaly do not involve after effects. Ethological knowledge beeing the basis of this for-casting strategy, the authors define in this study a simplified behavioral scheme of four sparid larval species in a range of physiological conditions.

Tipo: Text

Palavras-chave: Lithognathus mormyrus; Puntazzo puntazzo; Sparus aurata; Diplodus sargus; Sparidae; Pisces; Prediction; Biological stress; Ethology; Fish larvae; Pathology.

Ano: 1983

URL: http://archimer.ifremer.fr/doc/1983/acte-1255.pdf

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

Determinación de diferentes conjuntos de merluza común (Merluccius hubbsi) en el Mar Argentino mediante el estudio histológico de ovarios

Preliminary results on the nutritional evaluation of omega-3-HUFA-enriched Artemia nauplii for larvae of the sea bass, Dicentrarchus labrax

Cornejo, A.M..

Tipo: Theses and Dissertations

Palavras-chave: Ovaries; Histology; Ecosystems; Fish eggs; Fish larvae.

Ano: 1985

URL: http://hdl.handle.net/1834/4188

Van Ballaer, E.; Amat, F.; Hontoria, F.; Léger, P.; Sorgeloos, P..

Freshly hatched San Pablo Bay and Great Salt Lake Artemia nauplii (omega-3-HUFA-poor) and enriched meta-nauplii (omega-3-HUFA-enriched)were compared to reference Artemia nauplii (omega-3-HUFA-rich) as a food source for the larvae of the sea bass, Dicentrarchus labrax. Significant differences in survival and biomass production between the treatments could be attributed to the omega-3-HUFA content of the food. A delayed mortality in fish larvae fed the Great Salt Lake Artemia is suspected to be caused by a high level of alpha-BHC in this Artemia source. Growth was not significantly different between the treatments, most probably due to the large variation in growth...

Estudio sobre el crecimiento en peso y factor de condición en larvas de anchoíta, Engraulis anchoita Hubbs & Marini. Variaciones regionales, estacionales y anuales

Palavras-chave: Artificial feeding; Fish culture; Fish larvae; Nutritive value; Artemia salina; Dicentrarchus labrax [Bass].

Ano: 1985

URL: http://www.vliz.be/imisdocs/publications/261899.pdf

Estudios sobre las variaciones espacio-temporales en los patrones de distribución de embriones y larvas de la anchoíta (Engraulis anchoita), en relación con la estimación de su intensidad reproductiva

de Ciechomski, J.D.; Sánchez, R.P.; Alespeiti, G.; Regidor, H..

The equation log W=a+bL (where W=dry weight in ug, and L=total length in mm)was used to describe the growth in weight of larval anchovy collected in two areas of the Argentine sea, sampled in different months and several years. Regression lines were compared by covariance analysis applied to two size groups, namely larvae less and over 10 mm total length, as an evident break in the slopes indicated the existence of a chenge of rythm in the trajectory of larval growth in length. Significant differences between the slopes of the growth lines were observed within the smaller size group. No regional or yearly differences could be established fo larvae larger than 10 mm.

Tipo: Journal Contribution

Palavras-chave: Length-weight relationships; Fish larvae; Condition factor; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_2924.

Ano: 1986

URL: http://hdl.handle.net/1834/2023

Larval rearing and weaning of seabass, Lates calcarifer (Block), on experimental compounded diets

Sánchez, R.P..

Ichthyoplankton samples were collected during an exploratory cruise carried out by the RV Dr.Holmberg during the spring spawning peak of 1981 in the sea-shelf off Buenos Aires province (Argentina). The cruise was designed to carry out population studies in a restricted area of intense reproduction activity, in order to gather information on the time-space patterns of distribution of the eggs and larvae of the species.

Tipo: Journal Contribution

Palavras-chave: Fish larvae; Mortality; Growth curves; Controlled conditions; Fish eggs; Fish larvae; Mortality; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_4945.

Ano: 1986

URL: http://hdl.handle.net/1834/2031

Fuchs, Jacques; Nedelec, Georges.

Larval rearing trials of seabass larvae, either imported from Singapore or obtained from the captive broodstock of IFREMER/C.O.P. at Tahiti, were carried out since 1987, by testing different technologies originally used in South East Asia (green-water culture, sequential water changes) or developed by IFREMER for other species (clear water system, preys enrichment, continuous water renewal).

Tipo: Text

Palavras-chave: Lates calcarifer; Diets; Survival; Fish larvae; Brood stocks; Mortality; Pellet feeds; Artificial feeding; Swimming; Abnormalities; Swim bladder; Growth.

Ano: 1989

URL: http://archimer.ifremer.fr/doc/1989/acte-1433.pdf

Production of live prey for marine fish larvae

Pathology of marine warmwater finfish in Israel: Problems and research

Kraul, S.

Tropical marine fish larvae vary in their requirements for live planktonic food. Selection of live prey species for culture depends on larval size and larval tolerance of water quality. This report describes some of the cultured prey species, and their uses and limits as effective food for fish larvae. Methods are presented for the culture of phytoplankton, rotifers, copepods, and other live feeds.

Tipo: Text

Palavras-chave: Brine shrimp culture; Diets; Prey selection; Food organisms; Feeding; Growth; Rearing; Nutritional requirements; Fish larvae; Marine fish; Tropical fish.

Ano: 1989

URL: http://archimer.ifremer.fr/doc/1989/acte-1443.pdf

Définition d'un modèle d'élevage larvaire intensif pour la daurade Sparus auratus

Colorni, A.

A condition in Sparus aurata larvae termed "distended gut syndrome" (DGS) has become a major problem in the past three seasons. Unable to digest rotifers and brine shrimp nauplii, the larvae develop a swollen abdomen, exhibit a disoriented spinning motion and are swept passively with the current. Bacterial or viral infections were suspected. Chloramphenicol-supplemented larval food did not affect the prevalence of DGS. Virus-like particles 80 nm in diameter were observed in necrotic cytoplasm of midgut wall cells.

Tipo: Text

Palavras-chave: Israel; Sparidae; Pisces; Sparus aurata; Fish diseases; Fish larvae; Pathology.

Ano: 1989

URL: http://archimer.ifremer.fr/doc/1989/acte-1479.pdf

Ounais-guschemann, Nadia.

This study defines rearing parameters for mass products of 30-day old post larvae. Continuous lighting (600 lux) optimizes the predatory activity and suppresses the feeding rhythm. For 4-5 mm larvae (15 days), food ingestion slows down if the prey concentration in the tank is below 5 rotifers/ml, while there is no such threshold for 6-7 mm larvae (22 days). The rotifer Brachionus plicatilis , between 100 and 200 mu m, is an adequate initial prey, it can be replaced by Artemia salina for 7-8 mm larvae (30 days). It is observed that free amino acids and essential fatty acids contents have a prominent role in larvae growth; docosahexaenoic acid (C22:6n-3) content could be determined. Finally, the development of the swim bladder is facilitated by the renewal...

Tipo: Text

Palavras-chave: Sparus auratus; Pisces; Marine fish; Environmental diseases; Fatty acids; Amino acids; Controlled conditions; Juveniles; Culture tanks; Growth; Light effects; Nutritional requirements; Fish larvae; Syndrome de paroi; Nutrition; Alimentation; Lumière; Inflation primaire de la vessie natatoire; Sparus auratus; Elevage larvaire intensif; Poisson.

Ano: 1989

URL: http://archimer.ifremer.fr/doc/1989/these-1679.pdf

Early weaning of marine fish larvae onto microdiets: Constraints and perspectives

Selection of finfish species (seabass) as candidates for aquaculture in French Polynesia

Person, L.

Weaning small sized marine fish larvae at first feeding directly onto compound pellets is still difficult, while good results can be obtained when used in combination with live prey or when a prefeeding period on live prey is provided up to a size of about 2-3 mg. Microdiets are generally well ingested as their acceptability and visual detection may be improved using feeding activators and increasing good perception contrast. In theory, food may be processed to have a correct nutritional balance, selection of high digestible components is very important as larval digestive system is not fully functional during the first 2 or 3 weeks of life.

Tipo: Text

Palavras-chave: Hatching; Fatty acids; Amino acids; Nutritional requirements; Feeding behaviour; Stomach; Digestive system; Enzymes; Digestion; Physiology; Diets; Pellet feeds; Feeding; Fish larvae.

Ano: 1989

URL: http://archimer.ifremer.fr/doc/1989/acte-1422.pdf

Estudio de huevos y larvas de peces en el mar ecuatoriano durante septiembre-diciembre de 1990

Fuchs, Jacques; Gasset, Eric; Nedelec, Georges.

Species with a very high potential for aquaculture, allowing development projects on a short terms basis: the seabass originating from S.E. Asia. Species, potentially interesting but presenting some drawbacks, as difficulties to perform larval rearing or presenting pathological problem. Species considered as difficult to rear and not retained like Siganus argenteus , Siganidae or Caranx ignobilis , Carangidae. The future development of finfish in Polynesia is emphasized and a project of sea bass netcage culture in Polynesian lagoon is presented.

Tipo: Text

Palavras-chave: Siganus argenteus; Oreochromis; Coryphaenidae; Epinephelus microdon; Serranidae; Lates calcarifer; Centropomidae; Pisces; Fry; Fish larvae; Lagoons; Cage culture; Pellet feeds; Sexual reproduction; Spawning; Growth.

Ano: 1989

URL: http://archimer.ifremer.fr/doc/1989/acte-1474.pdf

Development of a lipid-enrichment technique for Artemia juveniles produced in an intensive system for use in marine larviculture

Villamar, F.; Ortega, D..

Durante los cruceros oceanográficos realizados en septiembre, noviembre y diciembre de 1990, las especies de peces de interés comercial encontrados fueron: Sardinops sagax, Etrumeus teres, Opisthonema s.p, Scomber japonicus y Engraulis ringens; en concentraciones no mayores a 100 ejemplares/10 m2, localizados en la zona Sur del perfil costanero ecuatoriano. Entre otros huevos (H) y larvas (L) de peces, se encontraron los pertenecientes al género Leuroglossum, de la familia Bathylagidae y también ejemplares pertenecientes a la familia Myctophydae. En general, la cantidad máxima total de huevos de peces fue mayor de 10000 H/10 m2 en la longitud 82°00'W, tanto a la altura de Cabo Pasado como al sur de la Punta de Santa Elena. La cantidad máxima de larvas de...

Tipo: Journal Contribution

Palavras-chave: Larval development; Fish larvae; Commercial species; Fish eggs; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_2924.

Ano: 1991

URL: http://hdl.handle.net/1834/3140

Dhont, J.; Lavens, P.; Sorgeloos, P..

Although there exists an obvious inclination to replace live larval food by formulated feeds, Artemia nauplii are still essential in the larviculture of marine fish species. So far, on-grown Artemia are rarely used in larviculture although they offer several advantages over Artemia nauplii: e.g. they contain a higher individual protein and energy content thus improving the fish larvae's energy budget; an equal amount of live food is reached with far less individuals thus a considerable saving of Artemia cysts; their composition of (n-3) highly unsaturated fatty acids (HUFA) may easily be improved by applying enrichment techniques. This study deals with the development of...

Effect of dietary essential fatty acids on egg quality and larviculture success of the greasy grouper (Epinephelus tauvina F.): preliminary results

Palavras-chave: Fish culture; Fish larvae; Food organisms; Intensive culture; Lipids; Nutritive value; Artemia.

Ano: 1991

URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2854

Dhert, P.; Lim, L.C.; Lavens, P.; Chao, T.M.; Chou, R.; Sorgeloos, P..

In spite of its aquaculture potential, the larval rearing of greasy grouper (Epinephelus tauvina) remains problematic and is not yet commercially feasible. The low and unpredictable larval survival is due to difficulties encountered in spawning the broodstock, the small size of the larvae at first feeding, and the high sensitivity of the larvae until day 45. The nutritional requirements for the broodstock as well as for the young larvae are still enigmatical. In this presentation the impact of supplementing the highly unsaturated fatty acids (HUFA), eicosapentaenoic (EPA), and docosahexaenoic acid (DHA) to the broodstock and larval diets is illustrated.

A new artificial diet for the early weaning of seabass (Dicentrarchus labrax) larvae

Palavras-chave: Diets; Fatty acids; Fish culture; Fish eggs; Fish larvae; Nutritional requirements; Survival.

Ano: 1991

URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2852

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 (Dicentrarchus labrax) in commercial hatcheries.

Live-food mediated drug delivery as a tool for disease treatment in larviculture: 2. A case study with European seabass

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

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 Artemia. 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 +...

Consideraciones sobre la alimentación de la caballa con especial enfasis en la depredación de huevos y larvas de peces

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