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Registros recuperados: 6
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Croissance et indice de condition de l'huître plate Ostrea edulis élevée en mer et en étang sur la côte méditerranéenne ArchiMer
Paquotte, Philippe; Moriceau, Jacques.
A monitoring of the growth and condition index of the flat oyster Ostrea edulis has been conducted in the Thau Lagoon and in open sea off the Cap d'Agde. Between April and November, its growth is greater in open sea than in the lagoon. In winter, the growth doesn't stop in open sea, but one needs to get away from mussel collection in practicing seabed farming. In these conditions, the oyster's growth, throughout the year, is very close in open sea and in lagoons whereas the condition index is higher in open sea.
Tipo: Text Palavras-chave: Méditerranée; Mer ouverte; Etang de Thau; Indice de condition; Croissance; Ostrea edulis.
Ano: 1986 URL: http://archimer.ifremer.fr/doc/1986/acte-6188.PDF
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Etude comparative de différents indices de condition chez l'huître creuse (Crassostrea gigas) ArchiMer
Bodoy, Alain; Prou, Jean; Berthome, Jean-paul.
Among the different condition indices, some of them were compared on a population of the japanese oyster, Crassostrea gigas. The follow-up of experimental racks was performed monthly during four years. The use of dry weight in condition indices gave a more precise and more reliable representation for the condition of the oysters than the fresh weight. The sensitivity of these indices, which corresponds to their ability in revealing small changes in the physiological condition, was calculated for each indice. Those exhibiting the best sensitivity were ranked as follow: dry weight on the difference between total weight and shell weight, dry weight on intervalve volume. Other indices including the ratio between dry weight and various assessments of the volume...
Tipo: Text Palavras-chave: Bivalve; Crassostrea gigas; Indice de qualité; Indice de condition; Crassostrea gigas; Bivalve; Condition factor; Condition index.
Ano: 1986 URL: http://archimer.ifremer.fr/doc/00000/2961/9155.pdf
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L'huître creuse Crassostrea gigas en Bretagne. Résultats du réseau de suivi de 1990 ArchiMer
Le Bec, Claude; Mazurie, Joseph.
The year 1990 is the second of a regional monitoring program on production assessment of Crassostrea in Britlany. 9 sites have been tested with 3 stations per site and 3 oysters bags in each station, at 3 different densities : 170, 210 and 250 oysters per bag. 18 month old oysters stocked in bags in march were analyzed 43 weeks later, by variables concerning growth, survival, quality... The growth was lower at higher densities, more or less according to sites. As previously, differences between sites and stations are observed, with some confirmations (higher mortalities in Aber Benoît site) and also evolutions (growth and Polydora infestations improvement in Pen Bé site).
Tipo: Text Palavras-chave: Bretagne; Crassostrea gigas; Mortalité; Indice de condition; Polydora; ACP; Brittany; Crassostrea gigas; Mortality; Condition index; Polydora; Factorial analysis.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/00102/21318/18938.pdf
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L'huître creuse Crassostrea gigas en Bretagne. Résultats du réseau de suivi de 1991 ArchiMer
Le Bec, Claude; Mazurie, Joseph.
The year 1991 is the third one of the regional network on growth assessment of Crassostrea gigas in Brittany, wearing on 9 sites and 3 stations per site. 2 bags of 210 oysters, 18 month old, were placed in each station. Comparatively to previous years, the 1991 growth was moderate, and condition index inferior. However, the survival rates were very high (above 91 %) and most of the slight mortalities occurred a short time after stocking (as revealed by the sizes of dead shells). An improvement was also observed in the infestation rate by the polychaete Polydora sp..Most of the growth differences between sites and stations are still present. An analytical study including environmental variables would be necessary for explanations and will be tempted in 1993.
Tipo: Text Palavras-chave: Bretagne; Crassostrea gigas; Croissance; Mortalité; Indice de condition; Polydora; A.C.P.; Brittany; Crassostrea gigas; Growth; Mortality; Condition index; Polydora; Factorial analysis.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/00102/21319/18939.pdf
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Mise au point d'un protocole standard utilisant la cuisson au four à micro-ondes pour la mesure d'un indice de condition de moules ArchiMer
Besse, Thimothee; Mazurie, Joseph.
Dans le cadre des programmes des analyses biométriques sont effectuées régulièrement sur des lots de moules. Le taux de remplissage est alors mesuré, pour suivre la croissance de celles-ci. La chair et le poids de coquille sont alors mesurés indépendamment du poids entier. Toutefois il est apparu nécessaire d'accélérer ces mesures par une méthode facilitant l'écoquillage des moules fraîches. Un passage des moules au micro-ondes induit une ouverture des valves et un décollement de la chair, et il est alors possible de traiter rapidement des lots entiers.
Tipo: Text Palavras-chave: Protocole expérimental; Indice de condition; Poids de chair; Moules; Mytilus edulis; Micro- ondes.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/00014/12479/9325.pdf
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Réseau de suivi de la croissance de l'huître creuse en Bretagne. Synthèse des quatre années 1989 à 1992 ArchiMer
Littaye-mariette, Anne; Mazurie, Joseph.
Since 1989, an homogeneous Crassostrea gigas oyster stock has been distributed once a year on several rearing sites in Brittany (3 populations per site). The main quantitative and qualitative growth descriptors, which reflect water quality effects during the monitoring period, are estimated at the end of each year. The 1989-1992 analysis prompted us to describe various growth responses correlated to biotops: oyster production in open areas influenced by oceanic waters was fairly constant in quality, including size and Polydora sp. infestation. In contrast, oysters in estuarine areas, partly affected by eutrophication (e.g., Aber Benoît, Pen Bé), or with a low carrying capacity, were characterized by weight and Polydora sp. infestation heterogeneity. These...
Tipo: Text Palavras-chave: Polydora; Condition Index; Mortality; Growth; Monitoring; Oyster; Crassostrea gigas; Brittany; Polydora; Indice de condition; Mortalité; Croissance; Réseau; Huître; Crassostrea gigas; Bretagne.
Ano: 1993 URL: http://archimer.ifremer.fr/doc/1993/rapport-1639.pdf
Registros recuperados: 6
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