Data/hora: 04/06/2024 07:37:26

Provedor de dados: | 5
País: | France
Título: | REMONOR : Résultats 2004. Evaluation de la mortalité, croissance et qualité des huîtres creuses
Autores: | Mary, Charlotte; Pien, S.
Data: | 2005-06
Ano: | 2005
Palavras-chave: | REMORA; Quality; Growth; Mortality; Normandy; REMONOR; Cupped (gigas) oyster; Crassostrea gigas; REMORA; Qualité; Croissance; Mortalité; Basse Normandie; REMONOR; Huître creuse; Crassostrea gigas.
Resumo: | Since 1998, a growth and quality monitoring study of reared molluscs has been developed between the Shellfish Research Laboratory of Normandy (IFREMER Port-en-Bessin, Calvados) and the SMEL (Syndicat Mixte d'Expansion du Littoral) Experimental Centre (Blainville, Manche). REMONOR (REseau MOllusque de NORmandie). This study is based on the experience gained through the national monitoring network REMORA, which protocol has been entirely applied. Adults and spat of Pacific oysters Crassostrea gigas were dispatched on 17 stations all along the four oysters rearing areas of Normandy (Meuvaines-Asnelles, the Baie des Veys, the East and West coasts of the Cotentin peninsula -including Chausey archipelago-). These molluscs had the same origin and history (i.e. age and weight). Four essential criteria were used for monitoring the rearing areas: seasonal and annual mortality, growth (daily weight , seasonal growth rate and weight growth rate), quality (length, width and height coefficients, quality index [Afnor], condition index [Lawrence &amp; Scott] and Polydora index) and production level (survival x weight). This report leads to an identification of the characteristics of these four rearing areas. Annual average mortality was computed from 6,7 % (adults) to 7,5 % (juveniles). Adult mollusc's yearly growth remained normal compared to previous annual results with an average weight of 60, 8 g for all stations. Juveniles showed a very fast growth with an average weight of 29,1 g which is the highest ever met. All these growths seem to have been very high during summer. Concerning the meat quality, 2004 showed very bad performances for both year classes (adults 10,4 and juveniles : 10,2) These values are the lowest that have been computed since the beginning of this study. Infestation by Polydora did not show any differences from previous years except in the Baie des Veys where this phenomenon seems to have had a lower rate.
Tipo: | Text
Idioma: | Francês
Identificador: | http://archimer.ifremer.fr/doc/2005/rapport-2245.pdf
Relação: | http://archimer.ifremer.fr/doc/00000/2245/
Formato: | application/pdf