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Registros recuperados: 4
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Determination of stocking density limits for Crassostrea gigas larvae reared in flow-through and recirculating aquaculture systems and interaction between larval density and biofilm formation ArchiMer
Asmani, Katia; Petton, Bruno; Le Grand, Jacqueline; Mounier, Jerome; Robert, Rene; Nicolas, Jean-louis.
The first aim of this study was to determine the stocking density limits for Pacific oyster Crassostrea gigas larvae reared in flow-through system (FTS) and recirculating aquaculture systems (RAS). The second aim was to examine biofilm formation on the larval tank wall and its interaction with larvae growth. Three larvae concentrations were tested: 50, 150, and 300 mL−1. Chemical parameters and larvae performance were measured. The biofilm was observed by scanning electron microscopy, and its bacterial composition was investigated by pyrosequencing analysis of part of the 16S rRNA gene. The highest growth (13 µm day–1), survival (87%) and metamorphosis (50%) rates were observed in FTS at 50 larvae mL–1, while lower and similar performances occurred at...
Tipo: Text Palavras-chave: Pacific oyster; Larval culture; High stocking density; Biofilm; Filamentous bacteria.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00395/50611/51324.pdf
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Effects of temperature on herpes-like virus detection among hatchery-reared larval Pacific oyster Crassostrea gigas ArchiMer
Le Deuff, Rose-marie; Renault, Tristan; Gerard, Andre.
This paper describes effects of temperature on herpes-like virus detection in Pacific oyster Crassostrea gigas larvae held at different temperatures. Intranuclear, intracytoplasmic and extracellular viral particles were observed in velum and mantle connective tissues of oyster larvae reared at 25-26°C. In larvae held at 22-23OC, although nuclear lesions were observed, the presence of viral particles was not detected. Results were obtained for oyster larvae with 4 different parental origins. Herpesvirus infection was found in 3 of the 4 groups of oyster larvae held In the same conditions at the higher temperature.
Tipo: Text Palavras-chave: Temperature; Mortality; Larval culture; Crassotrea gigas; Pacific oyster; Herpesvirus.
Ano: 1996 URL: http://archimer.ifremer.fr/doc/1996/publication-2900.pdf
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Relation between lipid and fatty acid composition of eggs and larval survival in white pacific shrimp (Penaeus vannamei, Boone, 1931) ArchiMer
Palacios, Elena; Rehault, Jean Pierre; Heras, Horacio; Marty, Yannick; Moal, Jeanne; Samain, Jean-francois.
In this study, lipid classes and fatty acid composition were determined in eggs of P. vannamei as a function of survival to zoea III stage. Spawns were reared individually to zoea III and grouped, according to their final survival to this larval stage, into spawns of high and low survival. Eggs of individual spawns were analyzed for lipid and fatty acid composition of neutral and polar lipids and the results were then grouped according to survival to zoea III. The lipids within each group (high and low survival to zoea III) were pooled for the separation of phospholipids and the analysis of their fatty acid composition. Higher levels of triglycerides, carotenoids, and linoleic (18: 2n-6) acid in eggs were associated with improved survival to zoea III....
Tipo: Text Palavras-chave: Triglycerides; Phospholipid; Larval quality; Larval culture; Carotenoid.
Ano: 2001 URL: https://archimer.ifremer.fr/doc/2002/publication-786.pdf
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Remplacement total des artémia par des microparticules inertes dans l'élevage larvaire de l'ombrine Sciaenops ocellatus en Martinique ArchiMer
Petton, Bruno; Falguiere, Jean-claude.
In most of marine fishes cultured, larvae in their early development are fed with live prey (rotifer and/or artemia). In hatcheries, culture of these preys is labour consuming, needs specific facilities and represent an important part of production cast. On the other hand, world artemia production is subjected to fluctuation of harvest in the wild which could Iimit fish farming industry in the near future. A dried formula adapted to marine fish larvae has been perfected by Ifremer's center of Brest (France) and is distributed by a feeding company since 1999. This artificial microbound diet has been successfully tested on several temperate fishes such as European seabass (Dicentrarchus labrax), Atlantic cod (Gadus morhua) or European seabream (Sparus...
Tipo: Text Palavras-chave: Micro diets; Sciaenops ocellatus; Larval culture; Aquaculture; Microparticules; Sciaenops ocellatus; Élevage larvaire; Aquaculture.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/acte-6597.pdf
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