|
|
|
|
|
| Mazurie, Joseph; Foucart, Marie; Langlade, Aime; Bouget, Jean-francois; Fleury, Pierre-gildas; Joly, Jean-pierre; Martin, Anne-genevieve. |
| This study deals with rearing methods, growth and mortality performances, and problems encountered by the oyster farmers from Quiberon Bay (2800 ha of leases) : it relies on a survey achieved in july 2001, about 18 oyster farmers, and 2 diving campaigns (july and october 2001) on 2 years old oyster batches from the same farmers. The analysed enterprises vary in particular by the location and depth of their concession inside the bay, but also by their rearing scheme : a majority favours seedings with 18 month old oysters or more, according to prices and availability of oysters supplies. The duration until marketable size and mean mortalities seem to have increased since a preceding inquiry in 1986. The main constraint, affecting priorly the south border... |
| Tipo: Text |
Palavras-chave: Rearing practices; Density; Predators; Mortality; Growth; Bay of Quiberon; Crassostrea gigas; Cupped oyster; Pratiques culturales; Densité; Algues; Prédateurs; Mortalité; Croissance; Baie de Quiberon; Crassostrea gigas; Huître creuse. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/2002/rapport-6103.pdf |
| |
|
|
| Soletchnik, Patrick; Geairon, Philippe; Le Moine, Olivier; Robert, Stephane. |
| Des observations faites en 2009 et 2010 en estuaire de la Seudre montrent que la survie du naissain d’huîtres sauvages s’échelonne de 90% à 10% sur une structure verticale en béton, selon l’altitude de fixation. Plusieurs hypothèses proposées alors, relèvent : de la sélection précoce, de la résistance physiologique, de l’exposition à de plus fortes températures, du temps de présence dans l’eau (contamination et ressource trophique), et de la relation des naissains avec le sédiment. En 2010 et 2011, des expérimentations seront réalisées pour tester ces différentes hypothèses ; En 2010, sur le site ostréicole d’Agnas (bassin de Marennes Oléron) l’expérimentation vise à préciser l’effet de l’altitude des parcs, de l’exposition et de la déplétion, par «... |
| Tipo: Text |
Palavras-chave: Mortalité; Naissain; Huître creuse; Crassostrea gigas; Pertuis Charentais; Pratiques culturales. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00084/19478/17101.pdf |
| |
|
|
| Soletchnik, Patrick; Mazurie, Joseph; Allain, Gwenhael; Bedier, Edouard; Benabdelmouna, Abdellah; Blin, Jean-louis; Bouquet, Anne-lise; Cochet, Hélène; Degremont, Lionel; Gaussem, Florian; Gervasoni, Erika; Glize, Philippe; Petton, Bruno; Roussel, Pierre-yves; Pernet, Fabrice. |
| This paper summarizes knowledge about relations between husbandry practices and oyster spat mortalities since 2008 in France. These relations are strictly analyzed from a panel of experiments set on the shore (in outdoor experiments) by Ifremer teams and technical institutes all over French coasts. Results show some practices are able to reduce spat mortality with some influencing factors relevant of spat quality (sanitary status, natural or genetic selection) or husbandry practices. Spat “free” of virus is able to survive up to 90% when it is isolated and confined in ponds or nursery, during an epidemic crisis. When outbreaks occurred in oyster beds, natural or nursery spat died in almost same proportions. In 2010, some studies conducted in Mediterranean... |
| Tipo: Text |
Palavras-chave: Surmortalité; Naissain; Huître creuse; OsHV-1; Pratiques culturales; Mortality; Spat; Cupped oyster; Crassostrea gigas; OsHV-1; Cultural practices. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00032/14280/25847.pdf |
| |
|
|
| Mazurie, Joseph; Langlade, Aime; Fleury, Pierre-gildas; Bouget, Jean-francois; Claude, Serge; Foucart, Marie; Bedier, Edouard. |
| This study is the second part of a former report rapport Ifremer DRV/RST/RA/LCB/2002-08 dealing with rearing methods, growth and mortality performances, and problems encountered by the oyster farmers from Quiberon Bay (2800 ha of leases) : the first report relied on a survey achieved in july 200l, about 18 oyster farmers, and 2 diving campaigns (july and october 2001) on 2 years old oyster batches from the same farmers. Il is now completed by a last campaign of diving in october 2002, on 7 parcels out of the 18, still bearing the initial oysters. The analysed enterprises vary in particular by the location and depth of their concession inside the bay, but also by their rearing scheme : a majority favours seedings with 18 month old oysters or more, according... |
| Tipo: Text |
Palavras-chave: Huître creuse; Crassastrea gigas; Baie de Quiberon; Croissance; Mortalité; Pratiques culturales; Rentabilité économique; Cupped oyster; Crassostrea gigas; Mortality; Rearing practices; Profitability; Bay of Quiberon; .growlh. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00102/21322/18944.pdf |
| |
|
|
|
