Consulta: subjectFacets:"Tetraselmis suecica"
Registros recuperados: 4
Data/hora: 07/06/2024 02:49:52

The food quality of Tetraselmis suecica slurry for Crassostrea gigas spat
Provedor de dados: 5
Autores: Robert, Rene; Parisi, Guilina; Pastorelli, Roberta; Poli, Bianca Maria; Tredici, Mario.
In an attempt to provide cost-effective alternatives to live microalgae and to simplify hatchery-nursery procedures, concentrated microalgae appear to be very promising. Due to its high preservation ability, Prasinophytes appear to be good candidates for such alternative diets. Nevertheless, in a previous study the utilization of Tetraselmis suecica was only conceivable for old Crassostrea gigas larvae. In the present work its nutritional quality has been accordingly searched on ]apanese oyster's juveniles. Whatever the assemblages and condition, fresh or preserved microalgae, T. suecica did not allow an adequate postlarval development in C. gigas.
Tipo: Text
Palavras-chave: Nutritional quality; Crassostrea gigas; Tetraselmis suecica; Microalgae; Valeur alimentaire; Crassostrea gigas; Tetraselmis suecica; Microalgues.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/2002/publication-6202.PDF

Les métaux (Cd, Cu, Pb et Zn) dans la production des microalgues sur différents milieux de  culture : biodisponibilité, bioaccumulation et impact physiologique
Provedor de dados: 5
Autores: Gagneux-moreaux, Sindy.
The quality and the productivity of microalgal cultures depend on different physicochemical factors like salinity, pH, nutrient and trace element (including trace metals) concentration in the culture medium. During this doctoral study, the bioavailability of four metals for microalgae was tested in coastal seawater and several salt groundwaters. The bioavailability of a metal depends on its own total concentration as well as that of ligands in the medium, and on the relative affinity of each ligand towards the given metal. After a comparative study of the quality of algae grown in coastal seawater and salt groundwaters, the complexation capacities of these media were studied to allow a better understanding of the observed variations of metal...
Tipo: Text
Palavras-chave: Metal speciation; Artifical medium DAM; Salt groundwater; Coastal seawater; Tetraselmis suecica; Skeletonema costatum; Phaeodactylum tricornutum; Haslea ostrearia; Spéciation métallique; Milieu artificiel DAM; Eau souterraine salée; Eau de mer; Tetraselmis suecica; Skeletonema costatum; Phaeodactylum tricornutum; Haslea ostrearia.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/these-3128.pdf

Croissance et spectre de taille de trois algues en cultures non renouvelées, utilisées pour la nutrition de larves de bivalves en écloserie
Provedor de dados: 5
Autores: Robert, Rene; His, Edouard.
The different growth stages of three marine unicellular algae used in aquaculture, Isochrysis galbana, Chaetoceros calcitrans forma pumilum and tetraselmis suecica have been studied for 50 days under controlled culture conditions using a particle meter. At the same time, the size spectrum of the cells has been determined using a C 1000 scanner. The exponential growth stage is 11 days in the first two species, and 13 in the last one. Chaetoceros calcitrans forma pumilum is the smallest with an average size of 3.5 µm. Its cellular volume is constant. The average size of Isochrysis galbana is 4.5 µm. An increase of the cellular volume is observed through its stationary stage. The modal size of Tetraselmis suecica is 8 µm.  Again, an increase in the cellular...
Tipo: Text
Palavras-chave: Spectre de taille; Croissance; Tetraselmis suecica; Chaetoceros calcitrans forma pumilum; Isochrysis galbana; Algues unicellulaires.
Ano: 1986
URL: http://archimer.ifremer.fr/doc/1986/acte-6187.PDF

Contribution a l'etude de l'elevage de la crevette rose Palaemon serratus (Pennant) en captivite.
Provedor de dados: 5
Autores: Campillo, Albert.
The growth of post-larval P. serratus has been studied until the appearance of secondary sexual characters, in order to eliminate the influence of sex ratio on the mean wt. The influence of temp on intermolt period and number of molts was observed in male and female kept individually. Different sorts of food of natural origin have been tested. The rearing of post-larval lots metamorphosed at different times of the yr showed that the growth of P. serratus is conditioned not only by the temp, but also by the season. The food conversion ratio was defined in relation to the sex and age of the prawns. Shelters allowed the author to obtain a ratio of survival which varied post-larvae per square meter. The sex ratio established from several breedings as soon as...
Tipo: Text
Palavras-chave: Phaeodactylum tricornutum; Tetraselmis suecica; Artemia; Palaemon serratus; Crustacean culture; Larval development; Larvae; Induced breeding; Hatching; Controlled conditions; Laboratory culture; Rearing.
Ano: 1975
URL: http://archimer.ifremer.fr/doc/1975/publication-2027.pdf