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| Registros recuperados: 168 | |
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| Soletchnik, Patrick; Goulletquer, Philippe; Heral, Maurice; Razet, Daniel; Geairon, Philippe. |
| This ecophysiological study was conducted on the Japanese oyster (Crassostrea gigas) reared in Marennes-Oléron bay (France), in May 1992. Measurements were achieved using natural food conditions on three different days (a, b, c) at different tide levels (coefficient of 49, 57, and 88). Total particulate matter was continuously monitored with a micro-computer and a turbidimeter probe. The "consumption" function was calculated using a new formula allowing for particulate leakage prior to the pre-ingestive particle sorting. This particle leakage represents a passive loss of particles flowing through the branchial filter. Comparisons of the consumption and absorption rates of organic matter and chlorophyll a showed significant differences between seston... |
| Tipo: Text |
Palavras-chave: Crassostrea gigas; Consumption rate; Selection efficiency; Absorption rate; Energetic budget; Organic matter; Chlorophyll alpha; Marennes-Oleron bay. |
| Ano: 1996 |
URL: http://archimer.ifremer.fr/doc/1996/publication-3086.pdf |
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| Soletchnik, Patrick. |
| The Marennes Oléron Bay, the main French oyster culture basin, is an estuarine zone which is subject to anthropic pressure. Meteorological parameters such as temperature, insolation, pluviometry determine, for the most part, the water temperature and salinity conditions for each season and control the nutrient fluxes, as well as the primary and secondary production of the basin. The average air temperature (Météo -France) stays around 12.5°C between 1950 and 1980, then rises more than 1°C in 20 years. In those 50 years, average insolation drops from 198 hours to 176 hours, corresponding to an 11% decrease. Seasonal distribution of water inputs shows that spring pluviometry increased by 30% between the 1950's and the last two decades. Precipitations also... |
| Tipo: Text |
Palavras-chave: Ressource trophique; Crassostrea gigas; Production primaire; Bassin Marennes Oléron; Ecosystème. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/2002/acte-3381.pdf |
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| Robert, Stephane; Razet, Daniel; Goulletquer, Philippe; Soletchnik, Patrick; Geairon, Philippe; Le Moine, Olivier; Faury, Nicole; Mineur, Frederic; Seugnet, Jean-luc. |
| L'aménagement du fleuve Charente constitue un enjeu particulièrement important tant au niveau des activités de la bande côtière que pour le bassin versant. Au niveau du littoral charentais, et en particulier pour la conchyliculture, le fleuve Charente représente le principal apport d'eaux douces, et donc d 'éléments nutritifs, essentiels au développement de la production primaire et des larves d'huîtres. Ainsi, les apports d'eau douce sont importants pour le développement du phytoplancton (printemps, été, automne), le développement des larves d'huîtres en période estivale qui requiert une dessalure, et la qualité des huîtres en fin d'année. Les suivis des caractéristiques de la Charente sont par conséquent particulièrement importants et ont déjà fait... |
| Tipo: Text |
Palavras-chave: Salinité; Température; Evolution temporelle; Estuaire; Paramètres hydrologiques; Charente; Bassin de Marennes Oléron. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/00072/18363/15935.pdf |
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| Soletchnik, Patrick; Le Moine, Olivier; Polsenaere, Pierre. |
| Dans le contexte du changement global dont la cause anthropique est maintenant reconnue, cette étude dresse un bilan de l’évolution hydro-climatique des Pertuis Charentais (Bassin de Marennes-Oléron) depuis les quarante dernières années. Elle présente une comparaison de la situation hydro-climatique avant et après la « rupture thermique » des années 80-90, reconnue à l’échelle de l’hémisphère Nord et mise également en évidence dans les Pertuis entre 1983-1997. Les deux périodes comparées sont (1977-1991) d’une part et (2000-2015) d’autre part. Entre les deux, l’élévation des températures de l’eau de mer de 1,5°C en moyenne et 3°C en médiane, s’est accompagnée d’une élévation de la salinité (0,6 à 0,9) en lien avec un déficit d’apport des fleuves internes... |
| Tipo: Text |
Palavras-chave: Hydrologie; Hydro-climat; Hydrodynamique; Bassin de Marennes-Oléron; Evolution; Réchauffement climatique; Apports; Fleuves; Température; Salinité; Nutriments; Chlorophylle a. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00387/49815/50391.pdf |
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| Robert, Stephane; Razet, Daniel; Seugnet, Jean-luc; Geairon, Philippe; Guilpain, Patrice; Goulletquer, Philippe; Soletchnik, Patrick; Le Moine, Olivier; Faury, Nicole. |
| La présentation des mesures de salinités et de températures acquises au cours de l'an 2000, dans l'estuaire de la Charente s'inscrit dans la continuité de la campagne réalisée en 1999. L'objectif de cette surveillance est bien d'obtenir sur plusieurs années une évolution temporelle de ces paramètres afin 1) d'évaluer l'impact de la future retenue d'eau en amont de la Charente, 2) de caractériser les conditions température-salinité favorables (et défavorables) à la survie larvaire des huîtres en période estivale, 3) de disposer de données permettant de valider les modèles permettant de simuler les conditions trophiques des cheptels conchylicoles du Bassin de Marennes-Oléron. Ce travail s'inscrivant dans la durée, il est nécessaire dans un premier temps... |
| Tipo: Text |
Palavras-chave: Salinité; Température; Estuaire Charente; Variabilités; Marennes Oléron bassin; Charente-Maritime. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/00031/14241/11516.pdf |
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| Soletchnik, Patrick; Bouquet, Anne-lise; Mille, Dominique. |
| Flash Info Maline sur les Mortalités d’huîtres et de moules. Dix ans d’une communication concertée entre la profession conchylicole, les services de l’état, le centre technique régional et l’Ifremer. En 2008, des épisodes de mortalité massive touchent le naissain d’huître creuse en élevage sur le littoral français et dans les Pertuis Charentais en particulier. Dans ce contexte une « cellule de crise » est créée, réunissant l’Ifremer, le Creaa, les services de l’Etat (DDTM/17) et les professionnels représentés par leur CRC-PC. L’objectif est de rassembler les informations sur les épisodes de mortalité et de les partager avec la profession de manière concertée. Après chaque réunion, un document synthétique est produit : le « Flash Info Maline », rapidement... |
| Tipo: Text |
Palavras-chave: Mortalité; Huître creuse; Crassostrea gigas; Moule bleue; Mytilus edulis; Communication; Profession; Conchylicuture; Administration; Concertation; Pertuis Charentais. |
| Ano: 2018 |
URL: http://archimer.ifremer.fr/doc/00455/56630/58365.pdf |
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| Degremont, Lionel; Boudry, Pierre; Bedier, Edouard; Ropert, Michel; Soletchnik, Patrick; Huvet, Arnaud; Moal, Jeanne; Samain, Jean-francois. |
| The French project "Morest", coordinated by IFREMER, aims to understand the causes of the summer mortalities in Crassostrea gigas. In 2001, three sets of families were bred following a nested half-sib mating design. 17 half-sib families (HSF) were obtained in this first generation (G1) and reared in 3 sites. Significant differences in survival were observed among HSF, and some HSF showed high levels of mortality in all sites, clearly indicating a genetic basis for survival. In 2002, a second generation (G2), including divergent selection and inbred lines, was constituted. Monitoring of survival and growth of G2s were the same as in 2001. Significant differences in survival were found between the offspring of the "high" and "low" selected groups and between... |
| Tipo: Text |
Palavras-chave: Summer; Oyster culture; Juveniles mortality; Genetics; Commercial species; Breeding. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/2003/acte-3346.pdf |
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| Samain, Jean-francois; Degremont, Lionel; Soletchnik, Patrick; Haure, Joel; Bedier, Edouard; Ropert, Michel; Moal, Jeanne; Huvet, Arnaud; Bacca, Helene; Van Wormhoudt, A; Delaporte, Maryse; Costil, K; Pouvreau, Stephane; Lambert, Christian; Boulo, Viviane; Soudant, Philippe; Nicolas, Jean-louis; Leroux, Frederique; Renault, Tristan; Gagnaire, Beatrice; Geret, Florence; Boutet, Isabelle; Burgeot, Thierry; Boudry, Pierre. |
| Summer mortality of Pacific oysters is known in several countries. However no specific pathogen has been systematically associated with this phenomenon. A complex combination of environmental and biological parameters has been suggested as the cause and is now starting to be identified. A high genetic basis was found for survival in oysters when a first generation (G1) was tested in three sites during summer. This paper presents a synthesis on physiological characteristics of two selected groups ('R' and 'S', from families selected for resistance and susceptibility to summer mortality respectively), of the second and third generations. R and S showed improvement or reduction of survival compared with the control in both field and laboratory trials... |
| Tipo: Text |
Palavras-chave: ROS; Temperature; Stress; Hemocytes; Reproduction; Genetic selection; Resistant oyster; Crassostrea gigas; Pacific Oyster; Summer mortality. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2809.pdf |
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| Razet, Daniel; Faury, Nicole; Soletchnik, Patrick; Geairon, Philippe; Le Moine, Olivier; Goulletquer, Philippe. |
| Monitoring hydrology is an essential part of studying an ecosystem such as the Marennes-Oléron Bay. Since 1977, bimonthly samples have been taken from five stations in the bay. These samples provide important information on physical characteristics (temperature, oxygen, salinity), nutrients (NH4, NO3, NO2, SiO3, PO4) and particulate matter composition (seston, chlorophyll a and pheophytin). |
| Tipo: Text |
Palavras-chave: Hydrologie; Marennes Oléron; Hydrobiologie. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/1997/acte-3250.pdf |
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| Faury, Nicole; Razet, Daniel; Soletchnik, Patrick; Goulletquer, Philippe; Ratiskol, Jacqueline; Garnier, Jacqueline. |
| An hydrobiological monitoring survey has been carried out in the Bay of Marennes-Oléron since 1977. Five stations, distributed over the Bay, were sam pied twice a month. Spatial and temporal trends of the physical characteristics (i.e., seawater, temperature, salinity, dissolved oxygen and suspended matter), nutrients (azote, nitrite, nitrate, silicate) and organic variables (chlorophyll a and pheopigments) were assessed by using a statistical time-series analysis mode\. It was used to distinguish seasonal variability from long term trends. Pluviometric data as weil as the Charente River fluxes were similary analyzed by the model. The seasonal variability showed an homogeneous pattern over the five stations for all parameters, but the site-dependent... |
| Tipo: Text |
Palavras-chave: Shellfish farming; Overall trends; Seawater seasonal variability; Marennes Oleron Bay; Hydrology; Conchyliculture; Tendances; Variations saisonnières; Marennes Oléron; Hydrologie. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/1999/rapport-6379.pdf |
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| Soletchnik, Patrick. |
| L'huître est consommée dans le monde entier depuis des millénaires. Issue de gisements naturels, elle devient au cours des siècles un produit d'aquaculture «traditionnelle» Contrairement à l'aquaculture dite «nouvelle», la conchyliculture, et en particulier l'ostréiculture, échappe pour une grande part au contrôle des «travailleurs de la mer». Si l'homme gère les cheptels sur les sites ostréicoles, l'alimentation de l'huître, elle, provient directement de son environnement. En poches et sur «tables» ou «à plat» sur le sol, l'huître puise dans les particules organiques et le microphytoplancton en suspension dans l'eau de mer l'énergie nécessaire à sa croissance et à sa reproduction. |
| Tipo: Text |
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| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/00090/20101/17741.pdf |
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| Goulletquer, Philippe; Geairon, Philippe; Faury, Nicole; Razet, Daniel; Soletchnik, Patrick; Gras, Paul; Adessi, L.. |
| In European waters, significant economic damages to wooden structures are caused by bivalves molluscs and crustaceans. Treatments like copper-chrome-arsenic mixtures (CCA) were designed to prevent settlement of these wood borer species. However, limited and conflicting evidence regarding the toxicity to non-target organisms are available in the literature. This report aims to provide insights regarding the CCA leachates' toxicity to an important aquaculture species, the blue mussel Mytilus edulis for which much information on normal and stressed physiology is available for purposes of comparisons. The mussels are usually considered as a particularly suitable species for biological monitoring (Smaal and Widdows, 1994). To address the CCA leachate issue, two... |
| Tipo: Text |
Palavras-chave: Bivalvia; Mussel; Mytilus edulis; Copper-chrome-arsenic (CCA); Treatment; Feeding; Absorption. |
| Ano: 1996 |
URL: http://archimer.ifremer.fr/doc/00043/15437/12788.pdf |
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| Prou, Jean; Barille, Laurent; Heral, Maurice; Ratiskol, Gilles; Soletchnik, Patrick; Bougrier, Serge; Razet, Daniel; Geairon, Philippe. |
| During a fortnightly tidal cycle, a Mytilus edulis population was submitted to natural food conditions in the bay of Marennes-Oléron. During 4 tidal cycles, in vivo continuous measurements of turbidity and fluorescence were recorded to study the evolution of Total Particulate Matter (TPM), phaeopigments and chlorophyll-a concentrations. Turbidity in the water column is clearly influenced by resuspension of sediment. Degradated cells of phytoplankton were associated with sediments, involving strong correlation between phaeopigments and turbidity. High values of chlorophyll-a were encountered during neap tides when turbidity was low. No relation with resuspension processes were observed. No effect of fortnightly variability on retention was observed by... |
| Tipo: Text |
Palavras-chave: Ancova; Utilisation du matériel particulaire; Mytilus edulis; Moules. |
| Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/1994/publication-3079.pdf |
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| Registros recuperados: 168 | |
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