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Registros recuperados: 143
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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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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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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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Strategy of researches on marine bivalve defense mechanisms ArchiMer
Bachere, Evelyne; Mialhe, Eric; Noel, Thierry; Boulo, Viviane; Hervio, Dominique; Le Gall, Ghyslaine; Morvan, Annie.
Because of the impact of infectious diseases in marine mollusc aquaculture, research has been initially developed in pathology in term of epidemiology and diagnosis. The establishment of basic techniques for in vitro and in vivo studies of host/pathogen interactions and the progresses in the field of cellular and molecular biology have permitted to undertake researches in immunology. Parallel to fundamental interest in understanding defense mecanisms of molluscs against pathogens, applications may be expected for resistant strains obtained by genetic engineering.
Tipo: Text Palavras-chave: Defense mechanisms; Hosts; Immunology; Pathogens; Crassostrea gigas; Mytilus edulis.
Ano: 1991 URL: http://archimer.ifremer.fr/doc/00038/14884/12207.pdf
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Hydrobiologie d'un écosystème conchylicole : le Pertuis Breton (17) ArchiMer
Barille, Anne-laure.
La Baie de l'Aiguillon fut le berceau de la conchyliculture: les premiers parcs à moules furent établis au XIII""'· siècle par un irlandais P. Walton, naufragé en 1235 prés du port d'Esnande. C'est à lui que l'on attribut l'invention des bouchots. L'élevage traditionnel sur bouchot, initialement implanté à l'intérieur de la Baie de l'Aiguillon, a entraîné un tel envasement, que la culture des moules y est devenue impraticable. Les mytiliculteurs ont du installer leur bouchot à la sortie de la baie. Cette culture représente 20 000 tonnes; ce qui fait . du Pertuis Breton le plus important secteur de production mytilicole de la façade Atlantique. Cet élevage traditionnel occupe actuellement tous les sites exploitables, il faut donc conquérir de nouveaux...
Tipo: Text Palavras-chave: Hydrobiologie; Capacité trophique; Estimation biomasse; Mytiliculture; Mytilus edulis; Pertuis Breton.
Ano: 1993 URL: http://archimer.ifremer.fr/doc/00165/27639/25787.pdf
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Estimation des stocks de moules de gisements naturels dans la baie de Bourgneuf en 1986 ArchiMer
Baud, Jean-pierre; Haure, Joel.
L'estimation de stocks de mollusques non cultivés et plus particulièrement des moules de gisements naturels a été effectuée pour la première fois dans la Baie de Bourgneuf en Novembre 1986. Cette étude a fourni les résultats suivants; le stock total s'élève à 40 068 tonnes de moules de gisement naturel avec une précision de 49%. Pour obtenir cette estimation globale, trois secteurs ont été échantillonnés : la zone du Fain en eau profonde, qui représente 19 930 tonnes de moules (précision de 58%) et deux secteurs situés dans la zone de balancement des marées, à l'ouest du premier secteur qui sont estimés respectivement à 6 172 tonnes (précision 54%) et 3 966 tonnes (précision 186%). Cette étude montre l'importance des gisements naturels de moules dans ce...
Tipo: Text Palavras-chave: Conchyliculture; Biomasse; Stock; Moules; Gisements naturels; Baie de Bourgneuf; Mytilus edulis.
Ano: 1988 URL: http://archimer.ifremer.fr/doc/00047/15874/13295.pdf
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Ecotoxicological evaluation of the immunocompetence of two bivalves species (Mya arenaria and Mytilus edulis) in the Saguenay Fjord including a salinity gradient ArchiMer
Beaudry, A.; Lacaze, E.; Jobin-piche, A.; Masson, S.; Auffret, Michel; Brousseau, P.; Fournier, M..
Tipo: Text Palavras-chave: Mya arenaria; Mytilus edulis; Ecotoxicological evaluation.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00617/72882/71919.pdf
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Mortality investigation of Mytilus edulis and Mytilus galloprovincialis in France: An experimental survey under laboratory conditions ArchiMer
Benabdelmouna, Abdellah; Garcia, Celine; Ledu, Christophe; Lamy, Pierre; Maurouard, Elise; Degremont, Lionel.
In the context of mass mortality outbreaks affecting adult and juvenile mussels since 2014 in France, two investigations were conducted to study mussel mortality under laboratory conditions in 2015. The first investigated the horizontal transmission of a putative causal agent of the mortality among two stocks of wild Mytilus edulis and the potential genetic resistance of adults and their progenies. The second evaluated the resistance of pure and hybrid crosses of M. edulis and M. galloprovincialis at the spat stage to a mortality outbreak. For the first time in France, we described several mortality outbreaks affecting spat and adult mussels under laboratory conditions. Mortality was observed for seawater temperatures ranging from 10 to 23 °C, although the...
Tipo: Text Palavras-chave: Mytilus edulis; Mytilus galloprovincialis; Interspecific hybrids; Mortality outbreaks.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00445/55696/57364.pdf
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Taxinomie et épidémiologie moléculaires du parasite Marteilia refringens Grizel et al. 1974 : intérêt pour la gestion du risque sanitaire en conchyliculture ArchiMer
Berthe, Franck.
Infectious diseases are currently recognised as a major limiting factor to development and sustainability of aquaculture of molluscs. The study is focused on the European flat oyster, Ostrea edulis and its paramyxean parasite Marteilia refringens. Results are contributing to the prevention of risk associated to infected stocks imports from endemic zones, by developing molecular diagnostic tools that are specific, sensible and reliable. Phylogeny and taxonomy of Marteilia refringens, previously impeded by microscopy limits, were clarified by sequencing the rDNA SSU, small sub-unit in the rRNA gene cluster. These new insights have practical implications discussed in a pragmatic polyphasic approach involving pathology and epidemiology. This approach led us to...
Tipo: Text Palavras-chave: Marteilia refringens; Marteilia maurini; Ostrea edulis; Mytilus edulis; Pathologie; Phylogénie moléculaire; Taxinomie; Epidémiologie; Marteilia refringens; Marteilia maurini; Ostrea edulis; Mytilus edulis; Molluscs diseases; Molecular phylogeny; Taxonomy; Epidemiology.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/00109/21980/19594.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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Assortative fertilization and selection at larval stage in the mussels Mytilus edulis and M-galloprovincialis ArchiMer
Bierne, Nicolas; David, Pierre; Boudry, Pierre; Bonhomme, F.
Assortative mating (prezygotic isolation) and reduced hybrid fitness (postzygotic isolation) are typically invoked to explain the stability of hybrid zones. In the tension zone model. these factors work in opposition to migration, which promotes genetic homogeneity. Many marine animals migrate over long distances through a planktonic larval stage. Therefore. strong reproductive isolation is needed to maintain stable marine hybrid zones. However, surprisingly little is known about mating preferences and hybrid fitness in marine organisms. Smooth-shelled mussels (Mytilus spp.) form a well-known species complex, with hybridization over extensive areas such as the contact zone of M. edulis and M. galloprovincialis around European Atlantic coasts. This paper...
Tipo: Text Palavras-chave: Preferential fertilization; Mytilus galloprovincialis; Mytilus edulis; Hybrid viability; Heterosis; Gamete competition.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/publication-2781.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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Biological effects of the "Erika" oil spill on the common mussel (Mytilus edulis) ArchiMer
Bocquene, Gilles; Chantereau, Sebastien; Clerendeau, Christelle; Beausir, Emilie; Menard, Dominique; Raffin, Bernard; Minier, Christophe; Burgeot, Thierry; Leszkowicz, Annie Pfohl; Narbonne, Jean-françois.
A 3-year survey was made of several biological markers in mussels (Mytilus edulis) exposed in situ to the oil that came ashore after the wreck of the "Erika" tanker on the Brittany (France) coast in December 1999. The mussel response was assessed using a set of 7 biomarkers, most of them related to the metabolism of organic contaminants. After a series of validation tests, data was evaluated for only 5 biomarkers: acety1cholinesterase (AChE), glutathione S-transferase (GST), catalase (CAT), malondialdehyde (MDA) and deoxyribonucleic acid (DNA) adducts. No significant reductions in GST or CAT levels were observed, levels of DNA adducts and MDA were high during the 6 months immediately following the accident and levels of AChE were significantly lower during...
Tipo: Text Palavras-chave: Mytilus edulis; Mussel; Biomarkers; Monitoring; Survey; PAH; Polycyclic aromatic hydrocarbon; Oil spill.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/publication-403.pdf
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Les bouchots à Mytilus edulis Linnaeus dans l'écosystème estuarien du bassin de Marennes-Oléron (France): aspects biologique et bioénergétique ArchiMer
Boromthanarat, Somsak.
L'étude des moules de bouchots, Mytilus edulis L. a été réalisée pour caractériser les phénomènes biologiques et leur importance énergétique dans le bassin de Marennes-Oléron. Le suivi hydrobiologique a montré que la nourriture disponible pour les moules est plus abondante du printemps au début de l'été. Il a été possible de mettre en évidence une compétition spatiale extrêmement forte, au niveau intraspécïfique. Les moules cultivées à partir du transfert des naissains collectés sur cordes poussent plus rapidement que celles provenant d'une fixation directe du naissain sur les bouchots. La période de ponte est étalée entre février et  mai d'où l'existence de recrutement en juin. On peut proposer comme période de pêche, une saison allant de juin à novembre,...
Tipo: Text Palavras-chave: Mytiliculture; Mytilus edulis; Production; Recrutement; Composition biochimique; Indice de qualité; Bilan énergétique.
Ano: 1986 URL: http://archimer.ifremer.fr/doc/00441/55215/56689.pdf
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Reproduction et recrutement de Mytilus edulis L. cultivée sur les bouchots du bassin de Marennes-Oléron ArchiMer
Boromtharanat, S; Deslous-paoli, Jean-marc; Heral, Maurice.
Observations on the gonads of 50 mm mussels, made during 1983 and 1984, showed that the onsert of gametogenesis occured during September and that the gonads reached maturity in December. Spawning took place from early February to April at temperatures from 10 to 12°C. The flesh had a high water content at the beginning of the spawning period. The pelagic live of the larvae lasts about 30 days with settlement occurring in June when some 90 and 100 spats settle on 1 cpm of rope per day. The intensity of recruitment was 56.10(4) and 722.10(4) larvaes on rope corresponding to a square meter during 1983, and between 28.10(4) and 81.10(4) during 1984.
Tipo: Text Palavras-chave: Crawl; Recruitment; Reproduction; Mytilus edulis; Bouchot; Recrutement; Reproduction; Mytilus edulis.
Ano: 1987 URL: http://archimer.ifremer.fr/doc/1987/publication-2865.pdf
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Le tri préingestif particulaire chez l'huître Crassostrea gigas et la moule Mytilus edulis ArchiMer
Bougrier, Serge; Heral, Maurice; Hawkins, Andrew; Bayne, Barry.
Using flow cytometry techniques, it is possible to study both the potential impact of filter-feeder bivalves on microalgal communities as well as the changes in the grazed microalgae and the behaviour of these bivalves whose diet is composed of a mixture of different species.
Tipo: Text Palavras-chave: Physiologie; Mytilus edulis; Crassostrea gigas; Tri préingestif.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/1997/acte-3252.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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Résumé de nos observations sur l'infestation des moules du Pertuis Breton par Mytilicola intestinalis Steuer ArchiMer
Brienne, Henri.
Mytilicola intestinalis Steuer habite les moules du Pertuis Breton. Les premiers exemplaires ont été décelés en janvier 1960, dans un lot de moules provenant de bouchots construits sur les vases de Marsilly. Il semble que l'introduction de ce copépode soit récente, bien que la mortalité constatée aux environs de 1930 puisse être protée au compte de mytilicola. Nous avons pensé qu'il serait intéressant de publier les résultats des recherches effectuées depuis l'apparition du parasite et de faire connaître les dispositions qui ont été prises pour limiter sa propagation et assurer la production à venir des moules. Cette étude a porté sur les moules de culture-bouchots de la baie de l'Aiguillon et sur les moules des gisements naturels.
Tipo: Text Palavras-chave: Prolifération; Infestation; Elevage moules; Mytilus edulis; Mytilicola intestinalis; Pertuis Breton.
Ano: 1964 URL: http://archimer.ifremer.fr/doc/00135/24639/22668.pdf
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Etude de la destruction des larves de moules par traitement aux ultrasons. ArchiMer
Charlon, Nicole.
The problem of the clogging up of sea water pipes by Mytilus edulis larvae is a very real problem. A study has been made of the ways to destroy these larvae, (1) by electricity (publication in preparation), (2) by ultrasound. This last technique has given interesting data, but exploitation of results on a large scale presents many difficulties. An interesting general phenomenon is to be underlined. For ultrasound treatments of short duration (10s), many larvae are simply stressed and recover later on. For longer treatments, there is actual dislocation of the larvae and instant mortality, this mortality increases with time.
Tipo: Text Palavras-chave: Mytilus edulis; Pest control; Pipelines; Mortality causes; Larvae.
Ano: 1975 URL: http://archimer.ifremer.fr/doc/1975/publication-2031.pdf
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First record of the microsporidian parasite Steinhausia mytilovum in Mytilus sp (Bivalvia : Mytilidae) from France ArchiMer
Comtet, Thierry; Garcia, Celine; Le Coguic, Yvette; Joly, Jean-pierre.
Steinhausia mytilovuln is a globally distributed microsporidian parasite which infects the oocytes of the blue mussels Mytilus edulis and M. galloprovincialis. Despite the intensive monitoring effort made on mussel populations, the parasite has not previously been reported in France. We report herein on the occurrence of S. mytilovum in Mytilus sp. from 1 cultured and 2 natural populations on the northern coast of France, thus extending the parasite's known distribution northwards. We also report on the observation in 1989 of S. mytilovum in M, galloprovincialis from the Golfe de Fos area in the Mediterranean Sea (South of France), S. mytilovum was observed in the European hybrid zone between M. edulis and M. galloprovincialis, which therefore renders the...
Tipo: Text Palavras-chave: Aquaculture; Parasite; Microsporicha; Steinhausia mytilovum; Mytilus galloprovincialis; Mytilus edulis.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/publication-2862.pdf
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