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| Registros recuperados: 120 | |
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| 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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| Morga, Benjamin; Faury, Nicole; Guesdon, Stephane; Chollet, Bruno; Renault, Tristan. |
| Since 2008, mass mortality outbreaks associated with the detection of particular variants of OsHV-1 have been reported in Crassostrea gigas spat and juveniles in several countries. Recent studies have reported information on viral replication during experimental infection. Viral DNA and RNA were also detected in the haemolymph and haemocytes suggesting that the virus could circulate through the circulatory system. However, it is unknown if the virus is free in the haemolymph, passively associated at the surface of haemocytes, or able to infect and replicate inside these cells inducing (or not) virion production. In the present study, we collected haemocytes from the haemolymphatic sinus of the adductor muscle of healthy C. gigas spat and exposed them in... |
| Tipo: Text |
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| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00399/50997/51780.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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| Martenot, Claire; Segarra, Amelie; Baillon, Laury; Faury, Nicole; Houssin, Maryline; Renault, Tristan. |
| Immunohistochemistry (IHC) assays were conducted on paraffin sections from experimentally infected spat and unchallenged spat produced in hatchery to determine the tissue distribution of three viral proteins within the Pacific oyster, Crassostrea gigas. Polyclonal antibodies were produced from recombinant proteins corresponding to two putative membrane proteins and one putative apoptosis inhibitor encoded by ORF 25, 72, and 87, respectively. Results were then compared to those obtained by in situ hybridization performed on the same individuals, and showed a substantial agreement according to Landis and Koch numeric scale. Positive signals were mainly observed in connective tissue of gills, mantle, adductor muscle, heart, digestive gland, labial palps, and... |
| Tipo: Text |
Palavras-chave: OsHV-1; Viral proteins; Crassostrea gigas. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00326/43697/43124.pdf |
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| Soletchnik, Patrick; Huvet, Arnaud; Le Moine, Olivier; Razet, Daniel; Geairon, Philippe; Faury, Nicole; Goulletquer, Philippe; Boudry, Pierre. |
| This paper reports a comparative study of two cupped oysters, Crassostrea gigas and C angulata, and their hybrids reared in the Marennes-Oleron Sound (France) under usual farming conditions. The relative proficiency of these species was characterized in terms of growth, survival and reproduction, three major concerns for oyster farming. Four populations of each taxon were sampled (C gigas: Japan and France; C angulata: Taiwan and Spain) and used as progenitors to produce six different progenies under common hatchery and nursery conditions (transfer of 5 to 6 g of seed oysters at sea and rearing in bags for 2 years). Mortality profiles differed greatly among the progenies. The C angulata progeny of Taiwanese origin gave the poorest results, with 100%... |
| Tipo: Text |
Palavras-chave: Atlantic coast; Crassostrea gigas; Phenotypes; Hybrids; Oyster fanning. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/2002/publication-560.pdf |
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| Soletchnik, Patrick; Le Moine, Olivier; Faury, Nicole; Razet, Daniel; Geairon, Philippe; Goulletquer, Philippe. |
| The summer mortality patterns was studied in 1996 on the Ronce-les-Bains oyster bank (175 ha), located on the southern part of the Bay Marennes-Oleron (Atlantic coastline). Studies on growth, sexual maturation, survival rates and environmental variables were compared at fifteen experimental sites (on- and off-bottom culture). After 7 months, cumulative mortality reached 8-19 and 23-33% for off-bottom and on-bottom culture, respectively which is significantly higher for the latter case. A seasonal mortality trend was noted, with a significant increase related to air temperature greater than 20 degrees C and with a significant pre-spawning glycogen catabolism. Based on soft tissue flesh growth results from both types of culture, several empirical models were... |
| Tipo: Text |
Palavras-chave: Atlantic Ocean; Crassostrea gigas; Mortality; Growth rates; Océan Atlantique; Crassostrea gigas; Mortalité; Croissance. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/1999/publication-862.pdf |
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| Segarra, Amelie; Faury, Nicole; Haffner, Philippe; Pepin, Jean-francois; Tourbiez, Delphine; Trancart, Suzanne; Travers, Marie-agnes; Renault, Tristan. |
| Le premier cas d'infection à virus de type herpès a été rapporté en 1972, aux Etats Unis, chez l'huître américaine, Crassostrea virginica (Farley et al, 1972). A partir de 1991, des mortalités massives associées à la détection de virus de type herpes ont été observées chez plusieurs espèces de bivalves marins, à différents stades de développement (essentiellement chez les larves et le naissain) et dans différentes régions du monde. Sur la base d’observation en microscopie électronique à transmission, ces virus présentaient des caractéristiques morphologiques identiques à celles des Herpesvirus (Roizman, 1982). Les connaissances acquises concernant la taille, la structure et le séquençage du génome d’un virus infectant les larves d’huîtres creuses en... |
| Tipo: Text |
Palavras-chave: Herpès virus OsHV-1; Expression gènes; Huître creuse; Crassostrea gigas. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00195/30627/29076.pdf |
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| 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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| Robert, Stephane; Le Moine, Olivier; Razet, Daniel; Geairon, Philippe; Guilpain, Patrice; Soletchnik, Patrick; Faury, Nicole; Seugnet, Jean-luc; Arnaud, Christophe; Chollet, Bruno; Chabirand, Jean-michel; Fleury, Pierre-gildas; Langlade, Aime; Goulletquer, Philippe; Mille, Dominique. |
| Le Bassin ostréicole de Marennes-Oléron, et globalement la Charente-Maritime, sont marqués depuis les années 80 (Héral, 1986), par un net recul des rendements de production qui engendrent une diminution de la rentabilité économique et un accroissement des coûts de production. La démonstration de la surcharge biologique du Bassin de Marennes-Oléron est faite depuis 1985. Cette situation a évolué depuis cette date, par une diminution des cheptels en élevage et par une augmentation des cheptels sauvages ce qui a abouti à des plans d'entretien et de restructuration du DPM. Cependant, la situation défavorable pour la majorité des zones charentaises en terme de croissance-production est annuellement confirmée, depuis 1993 au moyen des réseaux de croissance... |
| Tipo: Text |
Palavras-chave: Ostréiculture; Eaux profondes; Crassostrea gigas; Technique élevage; Croissance; Mortalité; Biométrie; Biochimie; Marennes Oléron. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00072/18369/15940.pdf |
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| Pauletto, Marianna; Segarra, Amelie; Montagnani, Caroline; Quillien, Virgile; Faury, Nicole; Le Grand, Jacqueline; Miner, Philippe; Petton, Bruno; Labreuche, Yannick; Fleury, Elodie; Fabioux, Caroline; Bargelloni, Luca; Renault, Tristan; Huvet, Arnaud. |
| Double-stranded RNA (dsRNA)-mediated genetic interference (RNAi) is a widely used reverse genetic tool for determining the loss-of-function phenotype of a gene. Here, the possible induction of an immune response by long dsRNA was tested in a marine bivalve (Crassostrea gigas), as well as the specific role of the subunit 2 of the nuclear factor kappa B inhibitor (I kappa B2). This gene is a candidate of particular interest for functional investigations in the context of oyster mass mortality events, as Cg-I kappa B2 mRNA levels exhibited significant variation depending on the amount of ostreid herpesvirus 1 (OsHV-1) DNA detected. In the present study, dsRNAs targeting Cg-I kappa B2 and green fluorescent protein genes were injected in vivo into oysters... |
| Tipo: Text |
Palavras-chave: Anti-viral response; RNA interference; Inhibitor of NF-kappa B; Marine bivalve; Ostreid herpesvirus 1. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00409/52011/52698.pdf |
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| Faury, Nicole; Geairon, Philippe; Moal, Jeanne; Pouvreau, Stephane; Razet, Daniel; Ropert, Michel; Soletchnik, Patrick. |
| Proximate biochemical analysis (proteins, lipids and carbohydrates) are performed on a regular basis by the various laboratories fom the Aquaculture Resources Directorate. Methods initially developed to analyse hydrological parameters were firstly transfered to assess meat components.1t appears now important to review and update the commonly used methods (Lowry et al., (1951), Dubois et al.,(l956), Marsh et Weinstein, (1966)), for our specifie purposes. A round table was organized to facilitate discussion among researchers and technicians from both Directorates 'Aquaculture Resources' and 'Product Valorization'and external partners, University of Caen. Several communications reviewing former and recent studies were done. Colleagues from the Directorate... |
| Tipo: Text |
Palavras-chave: Glycogen; Carbohydrates; Lipids; Proteins; Methods comparison; Proximate biochemical composition; Glycogène; Carbohydrates; Lipiedes; Protéines; Comparaison méthodes; Composition biochimique. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/2003/rapport-6378.pdf |
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| 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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| Goulletquer, Philippe; Le Moine, Olivier; Soletchnik, Patrick; Razet, Daniel; Turpin, Vincent; Robert, Jean-michel; Gras, Paul; Faury, Nicole; Geairon, Philippe; Taillade, Sylvie; Lodato, Marie; Lagarde, Franck. |
| La contractualisation SRC/IFREMER-URAPC concernait en 1996 trois actions spécifiques : • Expertise pour les cultures d'huîtres en eaux profondes, • Suivi de l'activité physiologique sur le banc de Ronce, • Valorisation des claires ostréicoles - optimisation du processus d'affinage. Le premier thème n'a pu être abordé que via les différentes réunions préparatoires SRC Ré Centre Ouest, Marennes-Oléron et les commissions des cultures marines. Depuis l'accord de la CCM de La Rochelle en date du 11/04/1996, le dossier reste en attente d'un accord budgétaire des différents partenaires. Le second thème concerne le suivi de l'activité physiologique des huîtres creuses sur le banc ostréicole de Ronce-Perquis. La méthodologie est basée sur l'utilisation d'un... |
| Tipo: Text |
Palavras-chave: Ostréiculture; Elevage en eaux profondes; Crassostrea gigas; Physilogie; Mortalité; Claire ostréicole; Bassin de Marennes Oléron; Charente-Maritime. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/00102/21316/18936.pdf |
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| Picot, Sandy; Faury, Nicole; Arzul, Isabelle; Chollet, Bruno; Renault, Tristan; Morga, Benjamin. |
| The Pacific oyster, Crassostrea gigas, is a mollusk bivalve commercially important as a food source. Pacific oysters are subjected to stress and diseases during culture. The autophagy pathway is involved in numerous cellular processes, including responses to starvation, cell death, and microorganism elimination. Autophagy also exists in C. gigas, and plays a role in the immune response against infections. Although this process is well-documented and conserved in most animals, it is still poorly understood in mollusks. To date, no study has provided a complete overview of the molecular mechanism of autophagy in mollusk bivalves. In this study, human and yeast ATG protein sequences and public databases (Uniprot and NCBI) were used to identify protein members... |
| Tipo: Text |
Palavras-chave: Autophagy; Autophagy related; Crassostrea gigas; Data mining; Immunohistochemistry; Real-time PCR; Western blot. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00606/71785/70270.pdf |
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| Registros recuperados: 120 | |
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