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Registros recuperados: 62
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Acquis biologique sur le pétoncle noir (Chlamys varia) en Rade de Brest 1973-1983. Conséquences sur l'aménagement de la ressource ArchiMer
Dao, Jean-claude; Gerard, Andre; Buestel, Dominique.
Research on the black scallop followed that on the king scallop. Indeed, over the 1973-1975 " spadework » period, it has been demonstrated that the roadsted of Brest was: - an overexploited king scallop deposit; the broodstock not being able to ensure a satisfying renewal of the species. - a black scallop production deposit (hundreds of tonnes). In parallel, the collection trials provided null results for the king scallop but very interesting results for the black scallop (thousands of spats per collector). From 1976 onwards, the spat collecting operations did not focus on king scallop juveniles anymore, but on black scallop.
Tipo: Text Palavras-chave: Reproduction; Captage; Physiologie; Pétoncle; Chlamys varia.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-6538.pdf
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Activité comparée chez les espèces Crassostrea angulata Lmk et Crassostrea gigas Thunberg, en hiver ArchiMer
His, Edouard.
L'espèce Crassostrea gigas a été introduite en 1969 à titre d'essai par de nombreux ostréiculteurs du bassin d'Arcachon. La comparaison des vitesses de croissance de cette nouvelle espèce et de l'huître indigène C. angulata est nettement à l'avantage de l'huître japonaise. Cette dernière atteint la taille marchande dans la plupart des cas dès la première année d''immersion dans la baie alors qu'il faut généralement de deux à trois ans pour obtenir le même résultat avec l'huître portugaise.
Tipo: Text Palavras-chave: Ostréiculture; Huître; Crassostrea angulata; Crassostrea gigas; Physiologie; Comparaison; Bassin Arcachon; Gironde.
Ano: 1971 URL: http://archimer.ifremer.fr/doc/00009/11979/8683.pdf
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Activité respiratoire en continu de l'huître Crassostrea gigas : mise au point d'une nouvelle méthodologie ArchiMer
Bougrier, Serge; Geairon, Philippe.
A continuous monitoring system to measure the respiration of Crassostrea gigas has been developped. The metabolic function estimated by oxygen consumption has been monitored during periods of 24 h, without food, at a temperature constant of 15°C. Preliminary results showed that the mean percentage of oyster activities was 50 % with a high variability from 0 to 100 %. The number of activity periods per day (24 h) is function of the oysters with variation between 0 and 7.
Tipo: Text Palavras-chave: Physiology; Respiration; Crassostrea gigas; Oysters; Physiologie; Respiration; Crassostrea gigas; Huîtres.
Ano: 1991 URL: http://archimer.ifremer.fr/doc/1991/acte-3046.pdf
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Aptitude de quatre tests simples à qualifier la vitalité de moules soumises à des épreuves graduelles ArchiMer
Pelvin, Christine.
Tipo: Text Palavras-chave: Byssus; Refixation; Choc thermique; Perte de sel; Force d'adduction intervalvaire; Vitalité; Physiologie; Moules.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/2000/rapport-6412.pdf
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BABE : Comparaison des sites de Ronce et Baie de Veys, incidence sur la reproduction et les mortalités : Ecologie côtière, mortalités, croissance, environnement - Physiologie - Immunologie ArchiMer
Soletchnik, Patrick; Le Moine, Olivier; Faury, Nicole; Guilpain, Patrice; Geairon, Philippe; Razet, Daniel; Seugnet, Jean-luc; Robert, Stephane; Ropert, Michel; Simonne, Charlotte; Hugonnet, Virginie; Moal, Jeanne; Pouvreau, Stephane; Huvet, Arnaud; Samain, Jean-francois; Lambert, Christophe; Soudant, Philippe; Frouel, Stephane; Choquet, Gwenaelle; Delaporte, Maryse; Paillard, Christine.
Four laboratories are involved in this multidisciplinary study: the Conchological Laboratory of Normandie (LCN), the Invertebrates Physiology Laboratory (LPI), the Université Bretagne Occidentale (LEMAR IHP) and the Conchological Laboratory of Poitou-Charentes (LCPC). The part of the study which is presented here (thematics "Coastal ecology") was produced in collaboration with the LCN. The data on the Bay of Veys was collected by Michel Ropert. This study aims at observing the "sites" effect on mortality and on the general biology of the animal, as well as measuring some environmental elements (e.g. water temperature, etc.). The geographical sites are Gefosse in the Bay of Veys (East Cotentin) and the Ronce bank in the south of the Marennes Oléron Bay. The...
Tipo: Text Palavras-chave: Immunologie; Physiologie; Paramètres environnementaux; Croissance; Ecologie côtière; Baies des Veys Cotentin; Ronce Charente Maritime; Comparaison sites; Reproduction; Mortalités; Crassostrea gigas; Huîtres.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/acte-3405.pdf
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Bases génétiques des caractères physiologiques impliqués dans la croissance chez l'huître creuse Crassostrea gigas (Thunberg) ArchiMer
Collet, Bertrand.
Growth is a very important trait in the oyster Crassoslrea gigas both from an economical and scientific point of view. Many questions remain unanswerable or are still discussed . From a hatchery-based population, the constancy in time of growth performances From larval to adult stage was studied. The influence of physiological parameters (energy acquisit ion and expenditure) and parentage on growth was estimated. ln the literature, the relationship between larval growth and post-Iarval growth is debated . Our study shows that the larval growth is positively correlated with the post-Iarval growth. This result validates the hatchery practices consisting in culling the small larvae. The growth performances are stable over the time and show no compensation....
Tipo: Text Palavras-chave: Crassostrea gigas; Croissance; Physiologie; Analyse de parenté; Microsatellite DNA; Crassostrea gigas; Growth; Physiology; Parentage analysis; Microsatellite DNA.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/00108/21939/19532.pdf
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Bilan énergétique chez les mollusques bivalves : terminologie et méthodologie - Compte rendu du groupe de travail réuni au laboratoire national "Ecosystème conchylicole" de l'IFREMER La Tremblade (13 et 14 septembre 1984) ArchiMer
Heral, Maurice; Lucas, Albert; Deslous Paoli, Jean-marc; Goulletquer, Philippe; Masse, Henri; LABEIM (Laboratoire de Biologie et d'Ecologie des Invertébrés Marins).
En septembre 1984, MM. HERAL et DESLOUS-PAOLI organisèrent à La Tremblade, une "réunion méthodologie expérimentale mollusques". Cette rencontre faisait suite à un bref état qui s'était engagé au Congrès de Montpellier sur les "Bases biologiques de l'Aquaculture", où il était apparu que la terminologie et la méthodologie concernant le métabolisme des bivalves devaient être clarifiées. Grâce à une large information auprès des spécialistes français de la physiologie des bivalves, la réunion à La Tremblade a réuni un grand nombre de participants très motivés. Pendant 2 jours des discussions très animées ont permis de bien comprendre les échanges entre les bivalves et leur environnement et d'y jeter un regard neuf, ce qui impliquait une analyse critique du...
Tipo: Text Palavras-chave: Terminologie; Méthodologie; Bilan d'énergie; Physiologie; Bivalve; Terminology; Methodology; Energy budget; Physiology; Bivalve molluscs.
Ano: 1987 URL: http://archimer.ifremer.fr/doc/00014/12562/9432.pdf
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Caractérisation précoce de la mortalité des lignées divergentes de Crassostrea gigas (G2) ArchiMer
Degremont, Lionel; Soletchnik, Patrick; Doner, Anne.
2001 shows how important the "R" and "S" biological families are for experimentation as well as the need to "preserve" these families from mortality during the first year. The "experimental nursing" conditions do not allow the conservation of dozens of families with many members for 6 to 8 months. Precocious characterisation at around 4-5 months enables a first selection of the biological material, as well as a first answer to the "in lab" genetical selection of the families. After the first results in 2001 (Céline de Ambroggi, LCPC, L. Degremont), two "precocious characterisation of mortality" experiments are carried out in 2002 on the divergent lineage of some genetical families (LGP production). Two 15 day long experiments are conducted in la Tremblade...
Tipo: Text Palavras-chave: Mortalités; Sélection; Physiologie; Genetique; Crassostrea gigas; Huîtres.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/acte-3406.pdf
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Compte-rendu d'activité 1990 de l'Unité de Recherche Régionale Aquacole (URRA) La Tremblade ArchiMer
Bodoy, Alain.
Rapport d'activité 1990 de l'Unité de Recherche Régionale Aquacole (URRA) La Tremblade
Tipo: Text Palavras-chave: Conchyliculture; Télécaptage; Gestion élevage; Biologie; Physiologie; Bivalves; Rapport activité.
Ano: 1990 URL: http://archimer.ifremer.fr/doc/00072/18284/15854.pdf
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Contribution à l'étude du stockage des huîtres en bassins ArchiMer
Masson, Daniel.
La mise sur le marché de coquillages marins vivants nécessite dans la majorité des cas un stockage en bassin avant expédition. Cette opération a plusieurs buts : - les débarrasser de la vase ou du sable qu'ils ont pu accumuler dans leur cavité palléale, sur les zones où ils vivaient, - favoriser l'élimination de germes éventuels (dont certains sont pathogènes pour l'homme) par le biais de l'activité de filtration des coquillages eux-mêmes, - permettre l'activité respiratoire de ces coquillages avant une période d'émersion plus ou moins longue (conditionnement, transport, mise en vente). Le coquillage conditionné et expédié est une denrée alimentaire. Avant cela (et notamment lors du stockage) il doit être considéré comme un animal d'élevage et traité en...
Tipo: Text Palavras-chave: Ostréiculture; Huître creuse; Crassostrea gigas; Stockage en bassin; Expérimentations; Physiologie.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/00134/24496/22524.pdf
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Cycle de reproduction naturelle de l'huître creuse Crassostrea gigas ArchiMer
Goulletquer, Philippe.
Since its introduction to French coasts in the 1970s, Crassostrea gigas completes its reproductive cycle—i.e. regular annual recruitment and establishment of natural populations—in only two sectors (Charentes coast and Arcachon Bay). In other areas of Pacific oyster production (Normandy, Brittany, Vendée, Mediterranean), complete gametogenesis may occur, resulting in spawning events and even recruitment in favourable temperatures. Temperature seems to be the main limiting factor for in situ reproduction. Growth and reproduction occur simultaneously. The study of the reproductive cycle of one-year old oysters showed that gametogenesis was asynchronous with high interannual variability and growth appeared to take precedence over reproduction. On the...
Tipo: Text Palavras-chave: Physiologie; Facteurs environnementaux; Cycle; Reproduction; Crassotrea gigas; Huîtres.
Ano: 1995 URL: http://archimer.ifremer.fr/doc/1995/acte-3209.pdf
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Dynamique des populations bactériennes au cours de deux productions expérimentales de phytoplancton marin naturel ArchiMer
Bianchi, M.a.; Martin, Y.p..
Quantitative and qualitative variations of the hetero­trophic bacterial population, during two experimental induced phytoplanktonic blooms are described. When the phytoplanktonic population deceases, the bacte­rial population exhibits a significant increase. The spring microflore is quite different from the fall ones. Microbiological, physiological and biochemical fluctuations indicate qualitative fluctuations. Bacterial strains are identified as "bacterial profiles".
Tipo: Text Palavras-chave: Plancton; Bactéries; Dynamique; Physiologie; Structure; Plankton; Bacteria; Dynamic; Physiology; Structure.
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00305/41669/40878.pdf
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Eléments d'écophysiologie d'huîtres Crassostrea gigas issues du bassin de Marennes-Oléron ArchiMer
Goulletquer, Philippe; Lagarde, Franck.
Le bassin de Marennes-Oléron est le premier site ostréicole européen. Depuis 1988 des mortalités chroniques apparaissent sur les élevages conchylicoles. En 1996, un programme de suivi de mortalité et des paramètres environnementaux a été développé. Les différentes conclusions retenues au cours des années antérieures font état de brusques variations de température suspectées dans l'apparition de ces mortalités. Une approche écophysiologique des huîtres par l'intermédiaire de la mesure de respiration a permis de déterminer l'effet significatif d'un stress thermique (∆T=28°C). La maturité sexuelle apparaît également comme un facteur prépondérant dans la demande métabolique. A l'issue de cette étude, il apparaît que les huîtres matures et de surcroît stressées...
Tipo: Text Palavras-chave: Ecophysiologie; Physiologie; Huître creuse; Bassin de Marennes-Oléron.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/00076/18761/16332.pdf
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Environnement et jeunes stades de vie chez le poisson : la plasticité développementale comme réponse aux contraintes hypoxiques et thermiques ArchiMer
Cadiz Barrera, Laura.
In the context of global change, decrease in oxygen availability (hypoxia) combined with rising water temperature are especially prevalent in coastal regions, towards which marine fish larvae may drift at the end of their development. It is well admitted that the physiological regulations implemented by organisms to cope with their environment during the early life stages of life can cause profound consequences in their subsequent life-history trajectory (developmental plasticity). Therefore, the main objective of this thesis was to investigate whether ecologically relevant conditions of oxygenation (40% and 100% air saturation) combined with thermic conditions (15 and 20 °C), occurring at the last stages of larval development of European sea bass...
Tipo: Text Palavras-chave: Hypoxie; Réchauffement des océans; Physiologie; Bar Européen; Plasticité développementale; Hypoxia; Ocean warming; Physiology; European sea bass; Developmental plasticity.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00498/60973/64384.pdf
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Essais d'amélioration de la qualité des huîtres creuses, Crassostrea gigas, en milieu naturel (claires) ArchiMer
Gras, Marie-paule; Gras, Paul.
Depuis l'extension de la culture de Crassostrea gigas, la qualité de ces huîtres creuses apparaît très variable au moment de leur commercialisation en fin d'année. En vue d'essayer d'améliorer la qualité de ces bivalves, nous nous sommes efforcés de comparer simultanément l'influence de différents apports nutritifs sur des huîtres provenant d'un lot homogène, mises à l'affinage en claires : bassins creusés dans des terrains plats et argileux, dont l'alimentation en eau de mer se fait à certains coefficients de marée. Les anciens marais-salants de la région de Marennes-Oléron, aujourd'hui presque tous désaffectés, ont été pour la plupart transformés en claires à huîtres
Tipo: Text Palavras-chave: Ostréiculture; Huître; Crassostrea gigas; Physiologie; Nutrition; Claire ostréicole; Marennes Oléron; Charente-Maritime.
Ano: 1976 URL: http://archimer.ifremer.fr/doc/00009/12008/8700.pdf
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Etude bibliographique de quelques espèces planctoniques et benthiques littorales de la Manche - Volume 1 - Espèces phytoplanctoniques ArchiMer
Erard-le Denn, Evelyne; Populus, Jacques.
This catalogue deals mainly with common phytoplanktonic species found in the Channel. It is part of a bibliographical survey on pelagos and benthos. The main idea was to gather the largest possible amount of data on the eco-physiology of each species. To do so, studies were conducted in the main marine region where the species had been found and analysed. We focused on several reference ecological studies conducted in the coastal Channel, on the E.D.F. sites, by the C.N.E.X.O., the I.S.T.P.M. and some university laboratories. A great attention was also paid to the studies on seasonal cycles carried out in laboratories in Plymouth, Helgoland and in the Irish zones. (unverified OCR)
Tipo: Text Palavras-chave: Physiology; Ecology; Bentic; Coastal species; English Channel sea; Phytoplanktonic species; Physiologie; Ecologie; Benthiques; Espèces littorales; Manche; Espèces phytoplanctoniques.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/rapport-3701.pdf
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Etude comparée de la croissance de Crassostrea gigas Thunberg dans trois rivières du Morbihan ArchiMer
Auger, Christian; Grizel, Henri; Tige, Gilbert; Langlade, Aime; Rabouin, Marie-agnès.
Breeding Crassostrea gigas was conducted in three rivers of Morbihan (Brittany France). During one year, every four months, their increasement was examined. In one of these rivers, oysters showed, however their age and their origin, an abnormal increasement. Shells were very thick, with many chambers. At the opposite, in the two others rivers, oysters did not show that disordered state. Shells were sound and their linear increasement was harmonious
Tipo: Text Palavras-chave: Coquilles; Physiologie; Crassostrea gigas; Huîtres.
Ano: 1977 URL: http://archimer.ifremer.fr/doc/1977/acte-6245.PDF
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Etude de la virulence des Vibrio pathogènes en relation avec la variabilité de la réponse chez l'uître creuse ArchiMer
De Decker, Sophie.
The bacteria of the Vibrio genus are one of the most abundant groups in the aquatic ecosystems. Two species of vibrios, Vibrio splendidus and V. Aestuarianus, have been associated, in some cases, to mortality in flat oyster Crassostrea gigas farms, most of the time during the summer period. This doctoral thesis studies the Vibrio-host interaction and their modulations according to the host's pathogenic virulence and its genetic, physiologic and immunitary parameters. These factors will be characterised by in vitro and in vivo approaches (experimental infection). The characterization of contrasted genetic families according to their sensitivity to these vibrios will enable the implementation of new improvement strategies in oyster farms (prophylactic...
Tipo: Text Palavras-chave: Immunologie; Physiologie; Paramètres génétiques; Virulence; Oyster; Crassostrea gigas; Pathogène; Vibrio.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/acte-3431.pdf
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Etude de l'évolution de la microflore planctonique des eaux, fèces et pseudofeces de l'huître Crassostrea gigas ArchiMer
IFREMER - Laboratoire Ecosystèmes Conchylicoles (LEC) La Tremblade; ECOCEAN - Environnement Littoral & Marin La Rochelle.
Tipo: Text Palavras-chave: Physiologie; Huîtres creuses; Crassostrea gigas; Fèces; Pseudofeces; Microflore planctonique.
Ano: 1990 URL: http://archimer.ifremer.fr/doc/00143/25475/23628.pdf
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Etude des mortalités d'huîtres sur le bancs ostréicoles de Ronce Perquis (Bassin de Marennes-Oléron) ArchiMer
Le Moine, Olivier; Soletchnik, Patrick; Razet, Daniel; Geairon, Philippe; Faury, Nicole; Goulletquer, Philippe.
In order to better understand the chronic summer mortality striking the Marennes Oléron Bay since 1988, a research program has been developed since 1994 in association with the professional sector. This study comprises the monitoring, from March to October 1997, of a homogeneous oyster population cultivated on-bottom and off-bottom on 15 working sites. One of these sites is equipped with a multiparameter probe and a valvometer. Measures are taken on an on-going basis on the working site.
Tipo: Text Palavras-chave: Bassin de Marennes Oléron; Ronce Perquis; Bancs Ostréicoles; Physiologie; Crassostrea gigas; Huîtres; Mortalités.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/1999/acte-3378.pdf
Registros recuperados: 62
Primeira ... 1234 ... Última
 

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