Consulta: creatorFacets:"Ponis, Emanuele"
Registros recuperados: 6
Data/hora: 01/06/2024 15:22:40

A glimpse on the mollusc industry in Europe
Provedor de dados: 5
Autores: Robert, Rene; Sanchez, Jose Luis; Perez-paralle, Luz; Ponis, Emanuele; Kamermans, Pauline; O'Mahoney, Maria.
Tipo: Text
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00126/23737/21744.pdf

Nutritional value of six Pavlovophyceae for Crassostrea gigas and Pecten maximus larvae
Provedor de dados: 5
Autores: Ponis, Emanuele; Probert, I; Veron, Benoit; Le Coz, Jean-rene; Mathieu, Michel; Robert, Rene.
Four unidentified new strains of Pavlovophyceae [Pavlova sp. AC 250 (M), Pavlova sp. AC 248 (Psh), Pavlova sp. AC 251 (Pth), Pavlova sp. AC 538 (Psm)] and two known species [Pavlova pinguis (Ppi), Rebecca salina (ex Pavlova salina, Rsa)] were characterized (productivity, size, dry weight, ash, gross composition, fatty acids, sterols) and their nutritional value in bispecific diets were evaluated both on Crassostrea gigas and Pecten maximus larvae. All microalgae exhibited poor food value for C gigas larvae. P. pinguis and R. salina did not sustain any growth, like the control starved larvae. No exo-toxicity of P. pinguis and R. salina was detected. These two species were weakly ingested by C. gigas larvae, while the four other pavlovophytes were...
Tipo: Text
Palavras-chave: Biochemical composition; Larval nutrition; Nutritional value; Microalgae.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1558.pdf

Pavlova lutheri: Production, preservation and use as food for Crassostrea gigas larvae
Provedor de dados: 5
Autores: Ponis, Emanuele; Parisi, G; Chini Zittelli, G; Lavista, F; Robert, Rene; Tredici, M. R.
The haptophyte Pavlova lutheri was cultivated in a 4-l flat alveolar photobioreactor (FAP) in semi-continuous mode during 35 days, achieving a mean volumetric productivity of 0.4 g l-1 day-1. The microalgal culture was harvested from the photobioreactor at an average concentration of 3.5 g l-1 and subjected to different storage conditions in which the effects of temperature (1 °C, 4 °C and 25 °C), air supply and preservative (ascorbic or propionic acid) addition on the viability of the stored suspensions were investigated. Low temperatures (1 and 4 °C) and air-bubbling extended the shelf-life of the stored suspension, while no beneficial effects of ascorbic or propionic acid were found. The influence of temperature and air-bubbling on fatty acid content...
Tipo: Text
Palavras-chave: Crassostrea gigas; Fatty acid composition; Mollusc nutrition; Photobioreactor; Pavlova lutheri; Preservation; Algal suspensions.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4194.pdf

New microalgae for the Pacific oyster Crassostrea gigas larvae
Provedor de dados: 5
Autores: Ponis, Emanuele; Probert, Ian; Veron, Benoit; Mathieu, Michel; Robert, Rene.
The number of microalgae of high nutritional value actually available to mollusc hatcheries is limited to a few species and this represents a constraint for the industry. Fifteen microalgal species belonging to seven different taxonomic classes were selected from the Algobank-Caen microalgal culture collection of the University of Caen. An initial screening of these microalgae, based on their cytomorphological characteristics and growth performances, led to the selection of four species (Imantonia rotunda, Emiliania huxleyi, Pseudoisochrysis paradoxa and Diacronema vlkianum), which were then tested as food for Crassostrea gigas larvae. Two species (L rotunda and E huxleyi) were of poor food value for oyster larvae, while P paradoxa and D. vlkianum resulted...
Tipo: Text
Palavras-chave: Biochemical composition; Larval nutrition; Mollusc hatchery; Microalgae.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1547.pdf

Effect of the culture system and culture technique on biochemical characteristics of Pavlova lutheri and its nutritional value for Crassostrea gigas larvae
Provedor de dados: 5
Autores: Ponis, Emanuele; Parisi, G; Le Coz, Jean-rene; Robert, Rene; Zittelli, G; Tredici, R.
Pavlova lutheri was cultivated in carboys using batch technique and in a flat alveolar photobioreactor (FAP), using initially batch and then semi-continuous techniques. Growth and productivity of the cultures were compared and their nutritional quality was assessed by analysing their biochemical composition (gross composition, fatty acids and sterols) and by evaluating their food value for Pacific oyster (Crassostrea gigas) larvae as bispecific diet in association with Chaetoceros calcitrans forma pumilum. The highest productivity was achieved with the FAP operating in semi-continuous mode. Gross composition of P. lutheri was similar in all cultures, while cellular organic matter content of the microalga grown in FAP in semi-continuous mode was lower....
Tipo: Text
Palavras-chave: Semi continuous culture; Pavlova lutheri; Flat alveolar photobioreactors; Crassostrea gigas; Carboys; Biochemical composition; Batch culture.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-6117.pdf

Valeur alimentaire de Tetraselmis striata et T. chui pour les larves de Crassostrea gigas
Provedor de dados: 5
Autores: Ponis, Emanuele; Parisi, Guilina; Robert, Rene.
In an attempt to simplify mollusc hatchery-nursery procedures and to provide cost-effective alternative diets, the use of concentrated and preserved microalgae is an alternative to the use of fresh microalgae. Because of their ability for preservation, Prasinophytes appears to be good candidates for remote algal production. In the present work, the food value of fresh and preserved Tetraselmis chui and T. striata for umboned Crassostrea gigas larvae was studied. During the first experiment, fresh T. striata led to the best larval development, but these performances were not confirmed subsequently. When used as monospecific diets the food value of both Prasinophytes is unsufficient to support a good C. gigas larval development. However in bispecific diets a...
Tipo: Text
Palavras-chave: Food value; Microalgae; Crassostrea gigas; Tetraselmis chui; Tetraselmis striata; Valeur alimentaire; Microalgues; Crassostrea gigas; Tetraselmis chui; Tetraselmis striata.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/2002/publication-6203.PDF