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Registros recuperados: 143
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Rapport sur l'activité du Laboratoire de La Tremblade - Année 1961 ArchiMer
Trochon, Pierre.
Rapport sur l'activité du Laboratoire de La Tremblade année 1961
Tipo: Text Palavras-chave: Rapport activité; Conchyliculture; Hydrologie; Mortalité; Météorologie; Reproduction; Claire ostréicole; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1961 URL: http://archimer.ifremer.fr/doc/00069/18059/15603.pdf
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Etude du secteur de Marennes-Oléron (partie sud du bassin charentais) : suivi de la reproduction de l'huître creuse Crassostrea gigas en 1999. Bilan de trois années d'observation de 1997 à 1999 ArchiMer
Arnaud, Christophe; Faury, Nicole; Bouquet, Jean-paul.
The Marennes-Oléron is a well known cupped oyster (Crassostrea gigas) and mussel (Mytilus edulis) reproduction area. Every year, a monitoring of the reproduction of these two species is carried out on behalf of the Regional Shellfish Culture Section of Marennes-Oléron. This monitoring aims to determine the periods of larval emission in order to let the professionals know about the best collection times This study presents the main results obtained in 1999 and compares them with those obtained in 1997 and 1998. The year 1999 showed good results as far as larval emission and development are concerned in both oysters and mussels. The comparison of the three consecutive years shows the disparity of larval evolutions.
Tipo: Text Palavras-chave: Marennes Oléron; Captage; Larves; Mytilus edulis; Moules; Crassostrea gigas; Huîtres; Reproduction.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/1999/rapport-6571.pdf
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Monoclonal antibodies against sporangia and spores of Marteilia sp. (Protozoa: Ascetospora) ArchiMer
Robledo, Jaf; Boulo, Viviane; Mialhe, Eric; Despres, Béatrice; Figueras, Antonio.
Digestive glands of mussels Mytilus edulis from Brittany, France, infected with Marteilia sp. (Ascetospora) were used to purify the parasite. A modification of a previously used purification protocol increased purification efficiency, permitting sporangial primordia and sporangia of Marteilia sp. to be obtained. Mouse (Balb/c) monoclonal antibodies were generated against this parasite. From the fusion, 26 monoclonal antibodies against Marteilia sp. were obtained. Antibodies from 6 clones reacted only with Marteilia sp. cells and not with normal host tissues. Four of these antibodies (1/1-3, 3/1-1, 4/1-1 and 6/2-3) reacted with the sporangia wall and two with the spore cytoplasm (9/1-1 and 12/5-1). Antibodies cross-reacted with Marteilia refringens from...
Tipo: Text Palavras-chave: Marteilia sp.; Mytilus edulis; Monoclonal antibodies.
Ano: 1994 URL: http://archimer.ifremer.fr/doc/00196/30730/29404.pdf
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La mytiliculture dans la Manche. Biomasses en élevage et croissance de Mytilus edulis L. ArchiMer
Goulletquer, Philippe; Joly, Jean-pierre; Le Gagneur, Eric; Ruelle, Francois.
This report describes the mussel Mytilus edulis sampling stock strategy developed to carry out stock assesments along the French Normandy coastline between 1989 and 1993. The overall totalnetweight reached 13,992 metric tons in 1993 with 27% precision level. Simultaneously, a growth study was carried out on 36 experimental sites to estimate overall variability. Individual total weight varied from 6.6 to 12 g at rearing cycle completion. An empirical management model conceming the Western Cotentin rearing areas was proposed and explained 68% of total weight variance. Based on a stepwise multilinear relationship, the model linked overall growth performance to local stocking density, tidal distribution, and distance from the main runoffs inputs. It aims to...
Tipo: Text Palavras-chave: Mytilus edulis; Manche; Stock; Croissance; Mytilus edulis; Manche; Stocking density; Growth.
Ano: 1995 URL: http://archimer.ifremer.fr/doc/00072/18360/15932.pdf
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Rapport d'activité année 1979 du Laboratoire de Biologie Conchylicole de La Tremblade ArchiMer
Heral, Maurice.
Rapport d'activité du Laboratoire de Biologie Conchylicole de La Tremblade concernant l'année 1979
Tipo: Text Palavras-chave: Conchyliculture; Physiologie; Crassostrea gigas; Mytilus edulis; Reproduction; Estimation stock; Croissance; Ruditapes decussatus; Ruditapes philippinarum; Marennes Oléron.
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00070/18088/15636.pdf
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Écophysiologie des dinoflagellés du genre Azadinium, production toxinique et transfert trophique vers les mollusques bivalves ArchiMer
Jauffrais, Thierry.
This study has been conducted in order to develop the analysis of AZAs and to produce AZAs from A. spinosum culture. It also aimed at studying the effect of environmental and nutritional factors on growth and toxin production. The study also demonstrated a link between A. spinosum and the accumulation of AZAs in shellfish, followed by the clarification of the processes of accumulation, detoxification and biotransformation of AZAs into mussels. A quantitative analysis of AZAs in A. spinosum cultures was developed, and the formation and structure of the AZA methylated analogues was explained and minimised. This work also demonstrated the feasibility of a sustainable production of AZAs from A. spinosum culture and highlighted the main factors influencing...
Tipo: Text Palavras-chave: Azadinium spinosum; Mytilus edulis; Azaspiracides; Phycotoxines; Dinoflagellés; Écophysiologie; CL-SM/SM; Azadinium spinosum; Mytilus edulis; Azaspiracids; Phycotoxins; Dinoflagellate; Ecophysiology; LC-MS/MS.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00111/22217/19891.pdf
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Suivi de la reproduction de l'huître creuse Crassostrea gigas et de la moule Mytilus edulis dans le bassin de Marennes Oléron ArchiMer
Arnaud, Christophe; Faury, Nicole; Bouquet, Jean-paul; Guesdon, Stephane; Kantin, Roger.
The monitoring of the reproduction of Crassostrea gigas, and more occasionally that of the mussel Mytilus edulis, is carried out in the Marennes-Oléron Basin, each year, from June through to September. This report presents the main results obtained in 1997, 1998, 1999, 2000 and compares them. It also recalls the techniques used and provides, in appendix, some bibliographic information on larval development.
Tipo: Text Palavras-chave: Marennes Oléron; Captage; Larves; Reproduction; Mytilus edulis; Moules; Crassostrea gigas; Huîtres.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/2000/rapport-6569.PDF
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Implantation et survie de Campylobacter jejuni/coli chez la moule Mytilus edulis ArchiMer
Minet, Jacques; Sauvager, F; Cormier, M.
Illnesses due to marine bivalvia consumption are mostly associated with viruses as causative agents. In more than the half of cases, this agent remains unidentifies, nevertheless. So far as bacteria are concerned, Salmonella are found firstly. Campylobacters represent a major cause of gastrointestinal disease, with Salmonella, among humans. Whether campylobacteriosis may be acquired from shellfishes remains unclear. We undertook to comparatively appreciate the survival of Campylobacter jejuni/coli and Salmonella typhimurium in seawater and contaminated mussels. Bacterial enumerations where performes using microbial cultures and specific (with immunofluorescence) direct viable counts (of substrate responsive bacteria). During laboratory contamination...
Tipo: Text Palavras-chave: Campylobacter coli; Campylobacter jejuni; Mytilus edulis; Bivalvia; Pathogenic bacteria; Seafood; Microbial contamination; Pollution effects; Bacteria; Sea water; Survival.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/acte-1606.pdf
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Suivi de la reproduction des mollusques d'élevage 1990 ArchiMer
Ratiskol, Jacqueline; Faury, Nicole.
La reproduction des coquillages a été soumise à des conditions climatiques exceptionnelles amplifiées par un hiver doux et sec. Concernant la reproduction des moules la formation des gonades s'est normalement effectuée vers le mois de février. Dans l'ensemble, le captage a été correct et la croissance des jeunes moules rapide malgré la sécheresse. La gamétogénèse des huîtres creuses a débuté très tôt. La reproduction s'est effectuée dans des conditions climatiques et de milieu peu habituels.
Tipo: Text Palavras-chave: Reproduction; Larves; Crassostrea gigas; Mytilus edulis; Bassin de Marennes Oléron.
Ano: 1990 URL: http://archimer.ifremer.fr/doc/00049/16069/13530.pdf
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Can habitat specialisation maintain a mosaic hybrid zone in marine bivalves? ArchiMer
Bierne, Nicolas; David, Pierre; Langlade, Aime; Bonhomme, F.
Maintaining the integrity of differentiated genomes in marine organisms needs efficient isolation mechanisms, because planktonic larval dispersion provides contacts between taxa. Habitat specialisation is interesting in this respect, because it can both prevent interspecific crosses (each taxon reproduces in its own habitat) and eliminate hybrids (typically less fit than a parental taxon in each habitat). The contact zone between smooth-shelled mussels Mytilus edulis and M. galloprovincialis in Europe is a good example, as allozyme genotypes typical of both taxa seem to segregate into different habitats. However, allozymes may be selected directly and it is not known whether the same pattern can be extended to the whole genome. Here, we used 6 presumably...
Tipo: Text Palavras-chave: Habitat specialisation; Hybrid zone; Introgression; Mytilus edulis; Mytilus galloprovincialis.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/00000/10228/7597.pdf
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Expertise des élevages de moules après la canicule estivale : rapport final ArchiMer
Robert, Stephane; Le Moine, Olivier.
La comparaison des rendements de production des moules commercialisables entre les relevés professionnels du mois de juillet et les prélèvements réalisés en présence de la commission montre qu'il y a effectivement eu un évènement particulier qui a entraîné la disparition d'une partie de la ressource. Cette disparition a eu lieu après le 14 août. Elle a été estimée pour' le littoral charentais: à 66% pour la zone Marsilly Esnandes, et à 43% pour la zone Baie d'Yves, Île d'Aix . L'analyse des données biologiques (longueur, poids total) souligne un arrêt de croissance inhabituel. Il est sans doute le reflet d'un stress des animaux. Il n'est pas observé d'amaigrissement important sur les deux sites explorés. La mise en évidence dans la littérature de facteurs...
Tipo: Text Palavras-chave: Rendement production; Mytilus edulis; Moule; Mortalité; Croissance; Pertuis Breton; Baie Aiguillon; Pertuis Antioche.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/00074/18511/16051.pdf
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Réseau national d'observation de la moule bleue Mytilus edulis, MYTILOBS, Campagne 2014-2 ArchiMer
Robert, Stephane; Bouget, Jean-francois; Fleury, Elodie; Chauvin, Jacky; Gagnery, Aline; Normand, Julien; Blin, Jean Louis; Cheve, Julien; Dagault, Francoise; Gerla, Daniel; Lejolivet, Aurore; Penot, Julia; Chabirand, Jean-michel; Genauzeau, Sylvie; Geairon, Philippe; Grizon, James; Le Moine, Olivier; Schmitt-gallotti, Anne; Seugnet, Jean-luc; Soletchnik, Patrick.
Le réseau national Mytilobs est implanté dans les principales régions mytilicoles du littoral atlantique : Normandie, Bretagne Nord, Bretagne Sud, Pays de Loire et Poitou-Charentes. Les sites d’Agon (Ouest Cotentin), du Vivier (baie du Mont Saint-Michel), de Pont Mahé (baie de Vilaine), de l’Aiguillon (pertuis Breton), d’Yves (pertuis d’Antioche) représentent l'élevage sur bouchot du Nord au Sud. Le site Filière (pertuis Breton) représente l’élevage sur corde, en pleine eau. La mise à l’eau des cheptels sur l’ensemble des sites du réseau, en septembre 2013, s’est faite à partir d’un même lot de moules calibrées (23,97 +/- 0,7mm), captées sur corde dans le pertuis Breton. Les prélèvements de la campagne 2014 (septembre 2013-décembre 2014) sont trimestriels....
Tipo: Text Palavras-chave: Mytilus edulis; Moule; Bouchot; Mortalité; Croissance; Température; Phytoplancton; Réseau; Biométrie; Environnement.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00270/38086/36231.pdf
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Compte rendu sur la reproduction des huîtres et des moules dans le bassin de Marennes Oléron pour l'année 1985 ArchiMer
Ratiskol, Jacqueline; Heurtebise, Serge.
Au cours de l'année 1985, le laboratoire CSRU de La Tremblade a pris en charge le suivi de la reproduction des larves d'huîtres et de moules dans le bassin de Marennes Oléron. Les différents points sont choisis en fonction de critères tels que la proximité des bancs géniteurs (gisements naturels d'huîtres ou de moules) et des zones traditionnelles de reproduction des huîtres : Les Doux et Mérignac pour le bassin, Faulx, Coux et Les Roches pour la Seudre, Les Palles et La mouclière pour la Charente.
Tipo: Text Palavras-chave: Reproduction; Larves; Crassostrea gigas; Mytilus edulis; Bassin de Marennes Oléron.
Ano: 1986 URL: http://archimer.ifremer.fr/doc/00049/16073/13534.pdf
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Observations sur le frai de Mytilus edulis Var. galloprovincialis (Lmk). Dates précises de frai. Facteurs provoquant l'émission de produits génitaux ArchiMer
Bouxin, H..
Durant sept années, de 1933 à la guerre, j'ai observé dans la région de Concarneau (Finistère) le frai de diverses espèces de Lamellibranches marins, notamment de la moule commune, Mytilus edulis var. galloprovincialis (Lmk). Les travaux sur le frai de la moule sont extrêmement nombreux. Les auteurs qui s'en sont occupés n'ont pas eu, en général, la possibilité d'observer les émissions elle-mêmes. Ils ont dû se contenter d'en induire l'époque soit d'après l'état des glandes génitales, soit en observant la présence de larves dans le plankton, soit, enfin, d'après la possibilité de fécondations artificielles. Or, si utiles que soient des observations de ce genre, elles ne permettent d'atteindre qu'à une probabilité de circonscrire qu'une époque relativement...
Tipo: Text Palavras-chave: Reproduction; Moules; Mytilus edulis; Mytilus galloprovincialis; Larves.
Ano: 1954 URL: http://archimer.ifremer.fr/doc/00004/11489/8045.pdf
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Phytoplancton des zones myticoles de la baie de Vilaine et intoxication par les coquillages. ArchiMer
Andresen Leitao, Maria Da Paz; Lassus, Patrick; Maggi, Pierre; Le Baut, Claire; Chauvin, Jacky; Truouet, Philippe.
Following 1978 and 1981 human poisoning by mussels in Vilaine Bay (France) a survey of potentially toxic dinoflagellates was conducted in that area in 1982. At the same time paralytic shellfish poison (PSP) analyses were made, the authors studied the dinoflagellates encountered in the intestinal guts of mussels from January to August 1982. Results failed to demonstrate an occurrence of PSP producing species, either by toxicological analysis or dinoflagellate persistency in the mussel guts.
Tipo: Text Palavras-chave: Mytilus edulis; Bivalvia; Marine mollusks; Stomach content; Toxicity; Phytoplankton; Biological poisons; Mussel culture.
Ano: 1982 URL: http://archimer.ifremer.fr/doc/1982/publication-1853.pdf
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Suivi de la reproduction des mollusques d'élevage 1991 ArchiMer
Faury, Nicole; Ratiskol, Jacqueline.
Les conditions météorologiques semblaient cette année à priori favorables à la reproduction des moules. Cependant, le maturation des gonades a été très lente. Ainsi, les premières pontes, de faible importance, ont eu lieu début Avril. Plusieurs émissions tardives sont apparues fin Mai et se sont poursuivies jusqu'au début du mois de Juillet. Elles n'ont pas été importantes et ont conduit à une faible quantité de larves au stade fixation. Un captage "moyen" a été observé début Mai. Ensuite, la présence de quelques larves grosses n'a pas permis un recrutement suffisant. Généralement, suite à la période de reproduction les moules reconstituent rapidement leur réserve; or cette année, elles sont restées maigres jusqu'à la fin Juillet. Le fort déficit...
Tipo: Text Palavras-chave: Reproduction; Captage; Naissain; Crassostrea gigas; Marennes Oléron; Mytilus edulis.
Ano: 1991 URL: http://archimer.ifremer.fr/doc/00072/18285/15857.pdf
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Applying Dynamic Energy Budget (DEB) theory to simulate growth and bio-energetics of blue mussels under low seston conditions ArchiMer
Rosland, R; Strand, O; Alunno-bruscia, Marianne; Bacher, Cedric; Strohmeier, T.
A Dynamic Energy Budget (DEB) model for simulation of growth and bioenergetics of blue mussels (Mytilus edulis) has been tested in three low seston sites in southern Norway. The observations comprise four datasets from laboratory experiments (physiological and biometrical mussel data) and three datasets from in situ growth experiments (biometrical mussel data). Additional in situ data from commercial farms in southern Norway were used for estimation of biometricalrelationships in the mussels. Three DEB parameters (shape coefficient, half saturation coefficient, and somatic maintenance rate coefficient) were estimated from experimental data, and the estimated parameters were complemented with parameter values from literature to establish a basic parameter...
Tipo: Text Palavras-chave: Low seston; Modelling; DEB theory; Mytilus edulis; Mussel culture.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6266.pdf
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Characterization of ten microsatellite loci in the blue mussel Mytilus edulis ArchiMer
Lallias, Delphine; Stockdale, Ruth; Boudry, Pierre; Lapegue, Sylvie; Beaumont, Andy R..
Mussels of the genus Mytilus are ecologically and commercially important worldwide, and they form hybrid complexes where their distributions overlap. Allozyme and nuclear markers have bee It Used to investigate their genetics over many years, but successful development of reliable highly valuable microsatellite markers has lagged be hind other shellfish species. We have developed and characterized tell novel microsatellite loci that amplify reliably for the blue mussel Mytilus edulis. The number of alleles among 30 individuals from a wild population (Menai Strait, North Wales UK) ranged between 9 and 29 and the observed heterozygosity between 0.300 and 0.954. Significant heterozygote deficiencies against the Hardy-Weinberg model were observed at 6 out of...
Tipo: Text Palavras-chave: Mytilus edulis; Microsatellites; Universal tailed-primer labeling; Null alleles; Mussels.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/00002/11275/7841.pdf
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Influence of suspended mussel lines on sediment erosion and resuspension in Lagune de la Grande Entrée, Îles-de-la-Madeleine, Québec, Canada ArchiMer
Walker, Tony R.; Grant, Jon; Weise, Andrea M.; Mckindsey, Christopher W.; Callier, Myriam D.; Richard, Marion.
Downward fluxes of organically rich biodeposits under suspended mussel lines can cause benthic impacts such as changes in benthic community structure or microbial mat production. Quantifying sediment erosion in these coastal ecosystems is important for understanding how fluxes of organic matter and mussel biodeposits contribute to benthic–pelagic coupling. Critical shear velocity (u*crit), erosion rates and particle size distributions of resuspended sediment were measured at four stations distributed along a transect perpendicular to a mussel farm in Lagune de la Grande Entrée, Îles-de-la-Madeleine (Quebec, Canada). Stations were selected underneath the outer-most mussel line (0 m) and at distances of 15, 30 m and at a reference station (500 m) further...
Tipo: Text Palavras-chave: Sediment erosion; Shear velocity; Resuspension; Biodeposits; Particle size; Mytilus edulis.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00202/31287/31925.pdf
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Modélisation de la détoxication de mollusques bivalves contenant des phycotoxines paralysantes ou diarrhéiques ArchiMer
Gueguen, Marielle.
The purpose of this study is to implement models to describe detoxification kinetics of Pacific oysters Crassostrea gigas and Blue mussels Mytilus edulis containing paralytic and diarrheic phycotoxins respectively. First, experimental trials made it possible to complement data from the literature regarding the understanding of processes involved in mollusc detoxification. In particular, they pointed out a difference in the mollusc capacity to degrade cellwalls of phycotoxin-producing dinoflagellates, according to their en cystement capacities. It was observed that paralytic phycotoxins reached the various oyster tissues whereas diarrheic toxins were mainly sequestred in the digestive gland of mussels. The latter seem to be retained by lysosomes localized...
Tipo: Text Palavras-chave: Modélisation; Mytilus edulis; Crassostrea gigas; Phycotoxines; Détoxication; Acide okadaïque; Toxines paralysantes; Modelling; Mytilus edulis; Crassostrea gigas; Phycotoxins; Detoxification; Okadaix acid; Paralytic toxin.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/00003/11473/8032.pdf
Registros recuperados: 143
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