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

An inexpensive turbidimeter for the automatic culturing of filter feeders

Ksouri, J.; Mensi, F.; Ben Said, R..

Cette étude, réalisée dans la partie Nord-Est du lac de Bizerte du premier Avril au 30 Juin 1999, porte sur l’étude de l’effet des deux paramètres, distance entre les touffes et poids initial des touffes, sur le rendement de culture par bouturage de Gracilaria verrucosa selon le mode des boudins de sable. Il en ressort que les conditions optimales de culture de cette espèce sont engendrées par un poids initial de 200 g, une distance entre les fragments de thalles de 30 cm et une récolte impérativement vers la fin du mois de Juin. Dans ces conditions, on enregistre un passage du poids de 200 g à 1087 g, un taux de croissance spécifique de 2,20 et une densité finale de 3,74 kg/m².

Tipo: Journal Contribution

Palavras-chave: Marine sciences; Weight; Algae; Seaweed culture; Aquaculture techniques; Gracilaria verrucosa; Http://aims.fao.org/aos/agrovoc/c_49675.

Ano: 2000

URL: http://hdl.handle.net/1834/4287

Versichele, D.; Bossuyt, E.; Sorgeloos, P..

Automatization in the food distribution is necessary for the controlled culturing of filter feeders in high densities. Numerous devices have been described to distribute specific quantities of food suspension at preset time intervals (cf. review in Kinne, 1977). The number of systems which, however, add food whenever a preset critical turbidity of the medium is exceeded are rather limited. They furthermore are either very expensive (sophisticated equipment) or have to be cleaned very often (cf. review in Sorgeloos et al., 1976). We tried to simplify the technological complexity of the existing systems and developed an inexpensive, automatic, self cleaning food distributor. This apparatus measures the turbidity of the culturing medium which is pumped into a...

Cofeeding of phospholipids to turbot Scophthalmus maximus L. larvae as a tool to reduce live food consumption

Palavras-chave: Aquaculture techniques; Filter feeders; Turbidity sensors.

Ano: 1979

URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3625

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 Artemia , to first-feeding turbot larvae were investigated. Five dietary regimes were used: control ( Artemia 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 Artemia 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...

Concevoir des structures pour l'élevage des poissons en mer

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

Controlled production of Artemia cysts under standard conditions in a recirculating culture system

Priour, Daniel.

The quick evolution of fish farming in Europe, and its development towards the open sea needs suitable farming tools. These tools must withstand the difficult sea states, but they must be easy to use, well adapted to the fish farming and not too much expensive. This book helps the design of such tools. It defines the solicitations of the sea on all the structures, and presents rules and methods to control these solicitations. Here, a structure is composed of a rearing support, a mooring system and equipments. This book describes these components, class them and gives lists of providers. The rearing support can be a cage, a group of cages or a boat. The support can float or to be submersible. The mooring system can be made up ropes, chains, anchors,...

Tipo: Text

Palavras-chave: Aquaculture equipment; Mooring systems; Anchoring; Aquaculture techniques; Structures; Sea water; Life support systems; Aquatic environment; Cage culture; Marine technology; Rearing; Fish culture.

Ano: 1995

URL: http://archimer.ifremer.fr/doc/1995/rapport-1667.pdf

Lavens, P.; Sorgeloos, P..

A flow-through culture system is described for the controlled production of Artemia cysts in 10 liter aquaria using 50 promille artificial seawater enriched with Fe-EDTA as culture medium, micronised rice bran as food source and cyclic flushes of the cultures with N2-gas as induction mechanism for oviparity. The culture water is recirculated over a rotating biological contactor, a settling tank and a UV disinfection unit. Cysts are continuously harvested by filtration of the culture effluent. Production yields average 0.5 g dry cysts per day and per aquarium.

Cultivo experimental en el mar de alga roja Hypnea musciforms en el área de Santa Marta, Caribe colombiano

Palavras-chave: Aquaculture techniques; Artemia.

Ano: 1984

URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3267

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

Culture en conditions optimisées de la macroalgue rouge <Gracilaria gracilis> (stackhouse) steentofr et al. dans le lac de Bizerte

Differentiation de juveniles de Chlamys varia et Chlamys opercularis

Ksouri, J.; Challougui, I.; Mensi, F..

La culture de Gracilaria a été réalisée selon le mode de bouturage dans la partie Nord-Est du lac de Bizerte du 15 Avril au 31 Mai 2006 afin de déterminer l'effet des conditions initiales optimisées sur le rendement final. Ces conditions initiales, sont caractérisées par une culture sur le fond (sur cordes tendues), un poids initial des touffes de 200 g, une distance entre les rangées de culture de 50 cm et un écartement entre les touffes de 30 cm; de ce fait, la densité initiale est de 1,4 kg/m². Au terme de 46 jours de culture, nous avons enregistré un accroissement du poids de 200 g à 1280 g engendrant un taux de croissance spécifique de 4,03 %/j et une densité finale de 9,1kg/m² (soit 91t poids frais/ha).

Tipo: Journal Contribution

Palavras-chave: Algal culture; Aquaculture systems; Aquaculture techniques; Density; Growth rate; Off-bottom culture; Seaweed culture; Aquaculture techniques; Seaweed culture; Algal culture; Density; Growth rate; Http://aims.fao.org/aos/agrovoc/c_28992; Http://aims.fao.org/aos/agrovoc/c_6914; Http://aims.fao.org/aos/agrovoc/c_31892; Http://aims.fao.org/aos/agrovoc/c_2186; Http://aims.fao.org/aos/agrovoc/c_16130.

Ano: 2008

URL: http://hdl.handle.net/1834/3795

Effect of season on controlled propagation of the African catfish, clarias gariepinus (Burchell 1822).

Morizur, Yvon.

The recent developments in collecting techniques for spat of Chlamys operoularis and Chlamys varia make it necessary to find criteria for separating these two species at early life stages. Biométrie criteria for differenciating between species have been found to be usable on individuals of a height superior to 3 mm. A quick différenciation of smaller individuals is possible by observation, under light microscope, of the périostracum external morphology on left valves.

Tipo: Text

Palavras-chave: Chlamys; Aquaculture techniques; Juveniles.

Ano: 1977

URL: http://archimer.ifremer.fr/doc/1977/acte-2343.pdf

Effects of age and environment on the summer mortality in cupped oyster Crassostrea gigas during the first two years

Ayinla, O.A.; Nwadukwe, F.O..

The effect of season on the controlled propagation of C. gariepinus was investigated. The hypophysation of C. gariepinus using the pituitary extract from the sacrificed C. gariepinus was carried out from July, 1987 to June 1988. The female broodstock weight ranged from 0.50kg while the male weight, from 0.5kg to 0.6kg. The condition factor of the female broodfish was more or less uniform (1.3 to 1.7). The results showed that there was peak production of eggs by the female during the rainy season. Eggs production for rainy season ranged from 28,000 eggs/kg body weight in June to 37,600 eggs/kg body weight in August. The percentage hatching of the fertilized eggs was also higher in the rainy season than the dry season. The highest hatching of the...

Tipo: Report

Palavras-chave: Aquaculture techniques; Aquaculture development; Aquaculture techniques; Http://aims.fao.org/aos/agrovoc/c_28992.

Ano: 1990

URL: http://hdl.handle.net/1834/2436

Degremont, Lionel; Boudry, Pierre; Soletchnik, Patrick; Bedier, Edouard; Ropert, Michel; Samain, Jean-francois.

Three successive generations were produced between 2001 and 2003 to assess to what extent genetic variability exists for survival in juvenile oysters Crassostrea gigas. For each generation, two groups were selected for their high ("R" for resistant) and low ("S" for susceptible) survival. Significant differences in mortality were observed during the first year in Riviere d'Auray (RA) (Brittany-France). However, low and similar mortality were observed for both groups, with no significant difference between groups in the first and second generation in this site, where the first summer is the critical, sensitive period with a clear age effect. In Baie des Veys (BDV) (Normandie-France), where mortalities usually mainly affect adults, mortality between groups,...

Tipo: Text

Palavras-chave: Crassostrea gigas; Spat; Spatial variations; Survival; Rearing; Mollusc culture; Marine molluscs; Environmental factors; Nursery grounds; Mortality causes; Biological age; Aquaculture techniques.

Ano: 2005

URL: http://archimer.ifremer.fr/doc/2005/acte-3385.pdf

Experimental studies on acclimatization of marine shrimps, Penaeus monodon and Metapenaeus monoceros to freshwater

High density flow-through culturing of brine shrimp Artemia on inert feeds: preliminary results with a modified culture system

Rathacharen, S.; Laxminarayana, A.; Venkatasami, O.; Codabaccus, B..

The adult shrimps, Penaeus monodon and Metapenaeus monoceros were induced to mature and spawn by eyestalk ablation. The larvae of both the species of shrimps were reared up to post larval stage on a diet of the phytoplankton, Chaetoceros calcitrans. The post larvae of M. monoceros were fed with artificial feeds only, whereas the post larvae of P. monodon were fed on small quantities of Artemia sp. in addition to artificial feed. After post larval stage, PL-20, the post-larvae were acclimatized to freshwater. Acclimatization was tried for different periods ranging between 2 and 20 days. The best survival rate was obtained for an acclimatization period of 5 days. Results obtained so far showed that the growth of P. monodon was significantly higher in...

Tipo: Preprint

Palavras-chave: Aquaculture techniques; Marine shrimp culture; Aquaculture techniques; Http://aims.fao.org/aos/agrovoc/c_28992.

Ano: 2005

URL: http://hdl.handle.net/1834/1083

Brisset, P.; Versichele, D.; Bossuyt, E.; De Ruyck, L.; Sorgeloos, P..

A modified filter system is described for the intensive culturing of Artemia in a continuously renewed medium. Extrapolated to a 1 m³ tank, 25 kg live weight Artemia could be produced over a culture period of two weeks on a diet of micronized and defatted rice bran using the salt enriched effluent of an abandoned geothermal well as a culture medium.

International study on Artemia : 24. Cold storage of live Artemia nauplii from various geographical sources: potentials and limits in aquaculture

Palavras-chave: Aquaculture techniques; Artemia.

Ano: 1982

URL: http://www.vliz.be/imisdocs/publications/261893.pdf

Léger, P.; Vanhaecke, P.; Sorgeloos, P..

Freshly-hatched Artemia nauplii from various geographical sources survived storage in a refrigerator (2-4°C) at densities of 2000 per ml and above. Except for Artemia from Chaplin Lake and Buenos Aires, naupliar viability was very high even after 48 h storage, and did not decrease significantly after a 24 h post-storage transfer to 25°C. Neither the naupliar dry weight nor biochemical composition changed significantly during refrigeration for most strains tested. Comparative culture-tests with stored and freshly-hatched nauplii as food for juvenile marine mysids Mysidopsis bahia M. and larval carp Cyprinus carpio L. revealed similar production performances.

International study on Artemia : 48. The effect of temperature on cyst hatching larval survival and biomass production for different geographical strains of brine shrimp Artemia spp.

Palavras-chave: Aquaculture techniques; Cold storage; Nauplii; Artemia.

Ano: 1983

URL: http://www.vliz.be/imisdocs/publications/261894.pdf

Vanhaecke, P.; Sorgeloos, P..

The effect of temperature on different geographical strains of Artemia has been studied for the following criteria: the hatchability of the cysts, the resistance of the larvae to high temperature (34°C) and the biomass production of larvae cultured under standard conditions. Experimental temperatures ranged from 25° to 37°C for the hatching criteria and from 20° to 32.5°C for the biomass production.Both the hatching percentage and growth performance are affected by temperature. However, the relative and quantitative impact of temperature varies widely among Artemia strains. This is also the case for the temperature resistance of the larvae. The impact of increasing temperatures on cyst hatching as well as the...

Larval rearing techniques and stock enhancement of silver seabream (Rhabdosargus sarba) in Mauritius

Palavras-chave: Aquaculture techniques; Biomass; Brine shrimp culture; Growth; Larvae; Survival; Temperature effects; Artemia.

Ano: 1989

URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3194

Les filières pour l'élevage des moules

Baccus, H.; Ramsaha, S.; Rathacharen, S.; Hassea, R.; Auliar, I.; Codabaccus, B..

The silver sea bream (Rhabdosargus sarba), has great commercial value in Mauritius. The species is a potential candidate for aquaculture. The sea bream, a winter spawner, was successfully induced to breed in captivity with HCG (Human Chorionic Gonadotropin) hormone injection (250 IU/kg body weight) in 1989 at the Albion Fisheries Research Centre. In 1997, the Coastal Fisheries Resources and Environment Conservation Project of Japanese International Cooperation Agency (JICA) was launched to enhance the stock of the silver sea bream in the lagoon. This species breeds under hatchery conditions during the spawning season. Annually, the hatchery-produced sea bream fingerlings, of 2.0 to 2.5 cm body length, were released in the coastal areas. The larval rearing...

Tipo: Journal Contribution

Palavras-chave: Rhabdosargus sarba; Aquaculture techniques; Larval development; Aquaculture techniques; Larvae; Http://aims.fao.org/aos/agrovoc/c_28992; Http://aims.fao.org/aos/agrovoc/c_4204.

Ano: 2005

URL: http://hdl.handle.net/1834/1064

Liquid chromatographic determination of efficacy of incorporation of trimethoprim and sulfamethoxazole in brine shrimp (Artemia spp.) used for prophylactic chemotherapy of fish

Bompais, Xavier.

This handbook has been written for those who want to use long-lines for mussel culture. It describes different types of mussel long-lines, moorings and components: specifications, advantages, disadvantages. It brings up some methods for lay down mooring and also operating mussel long-lines

Tipo: Text

Palavras-chave: France; Mooring lines; Off bottom culture; Mooring systems; Aquaculture techniques; Breeding; Mussel culture.

Ano: 1991

URL: http://archimer.ifremer.fr/doc/1991/rapport-1671.pdf

Nelis, H.; Léger, P.; Sorgeloos, P.; De Leenheer, A.P..

The brine shrimp Artemia , 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 Artemia franciscana, a sensitive and specific analytical method was developed. It is based on homogenization of Artemia nauplii in methanol, extraction of lipids with hexane, solid-phase cleanup on C18 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...

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

Palavras-chave: Aquaculture techniques; Fish culture; Infectious diseases; Medicine; Artemia.

Ano: 1991

URL: http://www.vliz.be/imisdocs/publications/262329.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 +...

Marine larval fish rearing

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

Onshore nursery rearing of bivalve molluscs in Belgium

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

Claus, C.; Maeckelberghe, H.; De Pauw, N..

From October to April the growth of spat of Ostrea edulis, Crassostrea gigas and Venerupis semidecussata in an onshore nursery was recorded as a function of water temperature and food level. The results of this study indicate that even very eutrophic water, such as that of the Sluice Dock at Ostend, Belgium, does not provide enough microalgae to sustain growth of bivalve spat during winter, irrespective of whether the water is heated or not. It is necessary to supply additional food (cultured live algae). Food shortage for three months at higher temperature induced a stress situation resulting in high mortality rates, even after transferring all the spat into an optimal combination of temperature and food availability.