Consulta: subjectFacets:"Polydora"
Registros recuperados: 15
Data/hora: 13/06/2024 23:41:54

L'huître creuse Crassostrea gigas en Bretagne. Résultats du réseau de suivi de 1991
Provedor de dados: 5
Autores: 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

Réseau d'évaluation de la croissance de l'huître creuse sur les côtes françaises (REMORA). Résultats des stations de BRETAGNE (Année 2000)
Provedor de dados: 5
Autores: Fleury, Pierre-gildas; Claude, Serge; Bouget, Jean-francois; Langlade, Aime; Le Coguic, Yvette.
Every year, from March to December, the IFREMER / REMORA network carries out a survey of mortality, growth and quality criteria of two oyster batches ("juveniles" = one-year ciass ; and "adults" = two-years class), distributed among various stations of the main French oyster areas. In Brittany, this network includes 11 points, to which regional points can be added (15 in 2000). With regard to the Breton stations of the network, the year 2000 showed rather low mortality rates, excepted mortality of several oysters when transfered to the sea. Several areas however had higher mortality rates (&gt; 20%) : l'Arguenon, Morlaix, les Abers, Pen-Bé and Le Croisic. 2000 is a year of good growth in South Brittany (72.8 g in December), more average in North Brittany...
Tipo: Text
Palavras-chave: REMORA; Bretagne; Huître creuse; Mortalité; Croissance; Qualité commerciale; Polydora; REMORA; Brittany; Gigas (cupped) oyster; Mortality; Growlh; Commercial qualily; Polydora.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/00113/22389/20084.pdf

REseau MOllusques des Rendements Aquacoles huitre creuse (REMORA) ; résultats des stations NATIONALES ; Année 2001
Provedor de dados: 5
Autores: Fleury, Pierre-gildas; Cornette, Florence; Claude, Serge; Palvadeau, Hubert; Robert, Stephane; D'Amico, Florence; Le Gall, Patrik; Vercelli, Catherine; Pien, S.
The monitoring network IFREMER /REMORA is assessing, on a yearly basis, mortality, growth and quality criteria of two oyster batches ("juveniles" = one-year old ; and "adults" = two-years old), distributed among various stations of the main French oyster areas. Samplings are carried out in March, June, September and December. This network is a tool for trend estimations (geographic and chronological, on the national scale) ; it must not be considered as an accurate estimation of professional oyster ongrowings. In 2001, mortality mainly occured in Summer on "adults" in baie des Veys (Normandy) and on juveniles in Cancale and Pénerf (Brittany) and in Fouras and Marennes (Poitou-Charentes). With an average individual weigh of 59 g in December, 2001 has been a...
Tipo: Text
Palavras-chave: Polydora; Quality; Growth; Mortality; Crassostrea gigas; Cupped (gigas) oyster; France; REMORA; Polydora; Qualité; Croissance; Mortalité; Crassostrea gigas; Huître creuse; France; REMORA.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/rapport-2438.pdf

REseau MOllusques des Rendements Aquacoles huitre creuse (REMORA) ; Résultats des stations nationales. Année 2000
Provedor de dados: 5
Autores: Fleury, Pierre-gildas; Cornette, Florence; Claude, Serge; Palvadeau, Hubert; Robert, Stéphane; D'Amico, Florence; Le Gall, Patrik; Vercelli, Catherine.
The monitoring network IFREMER /REMORA is assessing, on a yearly basis, mortality, growth and quality criteria of two oyster batches ("juveniles" = one-year old ; and "adults" = two-years old), distributed among various stations of the main French oyster areas. Samplings are carried out in March, June, September and December. This network is a tool for trend estimations (geographic and chronological, on the national scale) ; it must not be considered as an accurate estimation of professional oyster ongrowings. With the exception of Spring mortalities due to poor initial quality of adult oysters and to difficulties in the counting of juveniles, the year 2000 appeared to be a year of low mortality. 2000 is a year of poor growth (61.5 g in average weight in...
Tipo: Text
Palavras-chave: Polydora; Quality; Growth; Mortality; Crassostrea gigas; Cupped (gigas) oyster; France; REMORA; Polydora; Qualité; Croissance; Mortality; Crassostrea gigas; Huître creuse; France; REMORA.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/rapport-1635.pdf

REseau MOllusques des Rendements Aquacoles huitre creuse (REMORA) ; résultats des stations NATIONALES ; Année 2002
Provedor de dados: 5
Autores: Fleury, Pierre-gildas; Simonne, Charlotte; Claude, Serge; Palvadeau, Hubert; Guilpain, Patrice; D'Amico, Florence; Le Gall, Patrik; Vercelli, Catherine; Pien, S.
The monitoring network IFREMER /REMORA is assessing, on a yearly basis two oyster batches ("juveniles" = one-year old ; and "adults" = two-years old), distributed among various stations of the main French oyster areas. Samplings are carried out in March, June, September and December. In this way this network assess seasonal mortality, growth and quality of cupped oysters, in which it is a tool for trend estimations, and then for ecosystem management or scientific studies. However, it must not be considered as an accurate estimation of professional oyster ongrowings. 2002 has been a year of very few mortality (6% in average for "adults" and 11% for juveniles). Only 2 batches were over 15% mortality. The mortality is a bit higher in juveniles batches' with 5...
Tipo: Text
Palavras-chave: Polydora; Quality; Growth; Mortality; Crassostrea gigas; Cupped (gigas) oyster; France; REMORA; Polydora; Qualité; Croissance; Mortalité; Crassostrea gigas; Huître creuse; France; REMORA.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/rapport-2439.pdf

Infestation des coquilles d'huîtres Crassostrea gigas par les polydores en Basse-Normandie: recommandations et mise au point d'un traitement pour réduire cette nuisance.
Provedor de dados: 5
Autores: Ruellet, Thierry.
Polydorid species form a complex of 157 Spionidae. Among them, Boccardia polybranchia, Boccardia semibranchita, Polydora ciliata and Polydora hoplura regularly colonize oysters cultivated in Normandy. Only one tenth of the populations survives more than one year. Recruits observed on the East coast of Cotentin come from the rocky calcareous flatness of Calvados. Their reproduction is spread out over all the year but winter recruitment is more prejudicial for oysters. Deepest area are more infested. Polydorids create mudblisters which cause a bad marketing of the oyster production. In order to reduce this harmful effect, it is possible to shift the setting of the oyster towards the end of March, to transfer oysters towards other areas during the peak of...
Tipo: Text
Palavras-chave: Boccardia; Polydora; Parasites control; Polychaeta; Pests; Oysters; Boccardia; Polydora; Parasites (lutte contre les); Polychètes; Animaux et plantes nuisibles; Huîtres.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/these-162.pdf

Réseau de suivi de la croissance de l'huître creuse en Bretagne. Synthèse des quatre années 1989 à 1992
Provedor de dados: 5
Autores: 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

REseau MOllusques des Rendements Aquacoles huitre creuse (REMORA) ; résultats des stations NATIONALES ; Année 2004
Provedor de dados: 5
Autores: Fleury, Pierre-gildas; Simonne, Charlotte; Claude, Serge; Palvadeau, Hubert; Guilpain, Patrice; D'Amico, Florence; Le Gall, Patrik; Vercelli, Catherine; Pien, C.
The network REMORA by IFREMER quarterly follows each year 2 batches of Pacific cupped oysters Crassostrea gigas ("juveniles"= 1 year old; and "adults" = 2 years old) on various sites among the main French oyster areas. The network monitored 46 sites in 2004, including the 7 new sites added in 2003. The network REMORA thus assess seasonal survival, growth and quality of cupped oysters. It is a tool for trend estimations, ecosystem management and a reference frame for scientific studies. Globally speaking, the year 2004 was a good year for oyster farming, with a low mortality and a fast growth. The rearing yield (survival x growth) reached 2.0 for adults instead of 1.8 usually. However, the meat index remained close to the average inter annual data....
Tipo: Text
Palavras-chave: Polydora; Quality; Growth; Mortality; Crassostrea gigas; Pacific Cupped oyster; France; REMORA; Polydora; Qualité; Croissance; Mortalité; Crassostrea gigas; Huître creuse; France; REMORA.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/rapport-2413.pdf

Le réseau REMORA de suivi de la croissance des huîtres creuses Crassostrea gigas ; analyse des premières tendances (1993-98) en Bretagne.
Provedor de dados: 5
Autores: Fleury, Pierre-gildas; Goyard, Emmanuel; Mazurie, Joseph; Claude, Serge; Bouget, Jean-francois; Langlade, Aime; Le Coguic, Marie-jo.
The network IFREMER/REMORA has watched every year, since 1993, from February to December, mortality, growth and quality criteria of two oyster class-size ("juveniles" of the first-year c1ass and "adults" of the second year c1ass), distributed among various stations of the French oyster areas. This has provided a quite standard and simple annual assessment of the rearing results, generally tallied with professional observations. From year to year, data series have been obtained, from which mean values (references), chronological trends or spatial differences can be analysed. Results in Brittany, from 1993 to 1998, show that, in a "normal" year, 30 g oysters grow to 60-80 g at the end of the year, with a mortality rate of 10-15%. Mortality occures mainly in...
Tipo: Text
Palavras-chave: REMORA; Bretagne; Huître creuse; Crassostrea gigas; Mortalité; Croissance; Qualité; Polydora; REMORA; Brittany (France); Gigas oyster; Crassostrea gigas; Mortality; Growth; Quality; Polydora.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00113/22386/20081.pdf

Réseau d'évaluation de la croissance de l'huître creuse sur les côtes françaises (REMORA) ; résultats des stations de BRETAGNE (Année 1999)
Provedor de dados: 5
Autores: Fleury, Pierre-gildas; Claude, Serge; Bouget, Jean-francois; Langlade, Aime; Le Coguic, Yvette.
The network IFREMER/ REMORA watches every year, from February to December, mortality, growth and quality criteria of two oyster batches ("juveniles" = one-year class ; and "adults" = two-years class), distributed among various stations of the main French oyster areas. This network is a tool for trend estimations (geographic and chronological, on the national scale). With regard to the Breton stations of the network, the year 1999 showed a small increase of mortality rates, both in adults alter their transfer on the REMORA stations and in juveniles during the Summer season. this was particularly observed in Morlaix, Aber Benoît and Pen-Bé. Although it was better than 1998, the year 1999 was a poor year for growth, especially in North Brittany (62.5 g in...
Tipo: Text
Palavras-chave: REMORA; Bretagne; Huître creuse; Mortalité; Croissance; Qualité commerciale; Polydora; REMORA; Brittany; Gigas oyster; Mortality; Growth; Commercial quality; Polydora.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/00113/22388/20083.pdf

Anomalies des coquilles d'huîtres creuses Crassostrea gigas observées sur le littoral français en mai-juin 1989 dues au ver Polydora et aux peintures antisalissures
Provedor de dados: 5
Autores: Catherine, Martial; Blateau, Dominique; Mazurie, Joseph; Le Bec, Claude.
La recrudescence du ver Polydora dans les coquilles d'huîtres creuses observée dès l'été 1988 a pour principale conséquence le développement parfois très important de formations variqueuses et des chambres à vase à l'intérieur des huîtres, ce qui est très préjudiciable à leur qualité commerciale. Le bilan de l'infestation des coquilles d'huîtres par le ver Polydora sur le littoral normand et atlantique en mai et juin 1989 montre que les secteurs ostréicoles les plus touchés se situent à proximité de la Loire et de la Vilaine. Divers traitements des huîtres contre le Polydora sont possibles. Les meilleurs résultats sont obtenus par la combinaison de l'action de la saumure et d'un assec de 24 heures. L'examen du chambrage à gel colloïdal dans les huîtres...
Tipo: Text
Palavras-chave: Polydora; Huîtres creuses; Chambrage; Galeries; Traitement; Peintures marines; TBT; Réglementation.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00104/21491/19072.pdf

L'huître creuse Crassostrea gigas en Bretagne. Résultats du réseau de suivi de 1990
Provedor de dados: 5
Autores: 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

Réseau de suivi de la croissance de l'huître creuse sur les côtes françaises (REMORA) , résultats des stations de BRETAGNE (Année 1998)
Provedor de dados: 5
Autores: Fleury, Pierre-gildas; Claude, Serge; Langlade, Aime; Le Coguic, Yvette.
The network IFREMER/ REMORA watches every year, from February to December, mortality, growth and quality criteria of two oyster batches ("juveniles" = one-year class ; and "adults" = two-years class), distributed among various stations of the main French oyster areas. This network is a tool for trend estimations (geographic and chronological, on the national scale) ; it must not be regarded as an accurate estimation of professional oyster ongrowings. With regard to REMORA results, generally tallied with professional observations, 1998 on the whole was a second year of low mortality. But some areas remained affected by significant mortalities such as Pen-Bé in South Brittany. The year 1998 was overall a very poor year for growth : the mean oyster weight in...
Tipo: Text
Palavras-chave: REMORA; Bretagne; Huître creuse; Mortalité; Croissance; Qualité commerciale; Polydora; REMORA; Brittany; Gigas oyster; Mortality; Growth; Commercial quality; Polydora.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00113/22387/20082.pdf

REseau MOllusques des Rendements Aquacoles de l'huître creuse Crassostrea gigas sur les côtes françaises (REMORA). Résultats de la lagune de Thau pour l'année 2003.
Provedor de dados: 5
Autores: Le Gall, Patrik; Lagarde, Franck; Pichot, Yves; Vercelli, Catherine.
The monitoring network IFREMER/REMORA in Thau lagoon is assessing, on a yearly basis, mortality, growth and quality criteria distributed among 6 stations. Samplings are carried out in March, June, September and December. 2003 is a year with a very important mortality in Mèze and Marseillan area due to an anoxy and an anormal mortality at Bouzigues Nord in december. The growth rate is always better than others French oysters areas. Afnor index is high (beetwen 13.7 and 16.5 in december), so the totality of the oysters are classifed in "Spéciales". Polydora sp. Index is important but the initial stock was first infected. The valve quality is good, with no gelatine, except on Bouzigues South.
Tipo: Text
Palavras-chave: REMORA; France; Lagune de Thau; Huître creuse; Crassostrea gigas; Mortalité; Croissance; Qualité; Polydora; REMORA; France; Thau lagoon; Cupped oyster; Crassostrea gigas; Mortality; Growth; Quality; Polydora.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/00113/22384/20079.pdf

REseau MOllusques des Rendements Aquacoles huitre creuse (REMORA) ; Résultats des stations nationales. Année 1998
Provedor de dados: 5
Autores: Fleury, Pierre-gildas; Ruelle, Francois; Claude, Serge; Palvadeau, Hubert; Robert, Stephane; Vercelli, Catherine; Chabirand, Jean-michel; D'Amico, Florence.
The monitoring network IFREMER /REMORA is assessing on a yearly basis, from February to December, mortality, growth and quality criteria of two oyster batches ("juveniles" = one-year class ; and "adults" = two-years class), deployed among various stations of the main French oyster areas. This network is a tool for trend estimations (geographic and chronological, on the national scale) ; it must not be considered as an accurate estimation of professional oyster ongrowings. Based on REMORA results, generally tallied with professional observations, 1998 on the whole was a second year of low mortality. However several areas remained affected by significant mortalities : the baie des Veys (in Normandy), Morlaix and Pen-Bé (in Brittany) and Marennes (in...
Tipo: Text
Palavras-chave: Polydora; Commercial quality; Growth; Mortality; Crassostrea gigas; Pacific cupped oyster; France; REMORA; Polydora; Qualité commerciale; Croissance; Mortalité; Crassostrea gigas; Huître creuse; France; REMORA.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/1999/rapport-1638.pdf