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Rico Villa, Benjamin; Pouvreau, Stephane; Robert, Rene. |
Ingestion, growth and metamorphosis of Pacific oyster, Crassostrea gigas, larvae were studied under controlled conditions of food density and temperature using a combination of a flow-through rearing system and a hydrobiological monitoring device. In a first experiment larvae were exposed to three different phytoplankton densities (12, 20 and 40 cells μl-1) while in a second trial larvae were reared at five different temperatures (17, 22, 25, 27 and 32°C). Both food concentration and temperature significantly affected the larval physiology throughout the entire development from D-veliger to young spat. Larvae survived over a wide range of both environmental parameters with high survival at the end of experiments. The feeding functional response... |
Tipo: Text |
Palavras-chave: Temperature; Food; Growth; Ecophysiology; Bivalve larvae; Crassostrea gigas. |
Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4747.pdf |
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Rico Villa, Benjamin; Le Coz, Jean-rene; Mingant, Christian; Robert, Rene. |
Microalgae commonly used as feed for bivalves, Pavlova lutheri (P), Isochrisis affinis galbana (T) and Chaetoceros calcitrans forma pumilum (Cp), were fed to Pacific oyster Crassostrea gigas to assess their nutritional value for larval development and metamorphosis during two experiments. Monospecific, bispecific and trispecific diets were firstly evaluated during 3 weeks from D larvae to young postlarvae. Then bispecific diets, based on different T and Cp proportions, were assessed during a similar period. Concurrently, ingestion was studied through the whole larval and postlarval development for each diet and/or diet mixture. Because lipids are assumed to be a key nutrient for bivalves, biochemical analysis was undertaken on the second set of trials... |
Tipo: Text |
Palavras-chave: Lipids; Grazing; Metamorphosis; Growth; Larvae; Crassostrea gigas. |
Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1707.pdf |
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