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Registros recuperados: 27
Primeira ... 12 ... Última
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Absence de captage de Crassostrea gigas dans le bassin de Marennes-Oléron en 1981 : causes et conséquences ArchiMer
Berthome, Jean-paul; Deslous-paoli, Jean-marc; Heral, Maurice; Razet, Daniel; Garnier, Jacqueline.
The want of C. gigas spat-catching in the Marennes-oleron basin in 1981 can be due to various different reasons which are analysed here. Physico -chemical and trophic factors that can induce variations in the quality of gametogenesis, are successively in comparison with the year 1979 when reproduction was good. The biochemical evolution and a study of gonads slow a lack in maturation in 1981 even during the summer period. Late maturation of gonads bring about physiological consequences which induced mortality of cultivated oysters at the end of winter. A feeble recruit and a decrease of the cultivated stock have economic consequences which here sketched up.
Tipo: Text Palavras-chave: Larvae; Recrutment; Spat; Crassostrea gigas; Oysters; Larves; Recrutement; Captage; Crassostrea gigas; Huîtres.
Ano: 1982 URL: http://archimer.ifremer.fr/doc/1982/acte-2948.PDF
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Characterization of Vibrio isolated from Crassostrea gigas spat suffering summer mortality outbreaks (slides) ArchiMer
Gay, Melanie; Renault, Tristan; Le Roux, Frédérique.
The pathogens related to summer mortality outbreaks are a herpes virus and two bacterial strains one belonging to Vibrio splendidus biovar II and the other to Vibrio splendidus spp. However, the feature pathogen/opportunist of these strains is still unknown. Several strains belonging to the genus Vibrio have been identified as pathogen for different mollusk species. In the context of the French program Morest, experiments of cohabitation have been used to demonstrate the potential presence of a transmissible infectious agent in batches of oysters suffering from summer mortality outbreaks. More than one hundred Vibrio strains have been isolated from these experiments. These strains have been phenotypically and genotypically characterized. Their virulence...
Tipo: Text Palavras-chave: Vibrio splendidus; Vibrio lentus; Crassostrea gigas; Summer; Spat; Pathogen; Disease transmission; Oyster culture; Mortality; Microbial contamination; Oysters.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/2003/acte-3343.pdf
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Comparaison des performances d'élevage et de la vitalité de naissain d'huîtres creuses Crassostrea Gigas, en 3 sites du Morbihan (Rivière d'Auray et Baie de Quiberon), de mai 1999 à mars 2000 ArchiMer
Mazurie, Joseph; Fleury, Pierre-gildas; Claude, Serge; Hirata, Toshio; Langlade, Aime; Martin, Anne-genevieve; North, Benjamin.
Summer mortalities of young oysters have been studied in 1999 through the monitoring of a unique oyster batch distributed among 3 sites located from upstream of an estuary (Fort-Espagnol, Auray river) to downstream (Kerpenhir, Auray river) up to open bay (Men er Roué, Bay of Quiberon). Mortality and growth have been monitered in parallel with vitality indices, so as to try or identify periods of weakness of oysters. The spat grew from a mean weight of 3 g, in the beginning of May to around 35 g in November, without sharp differences between sites. The summer mortalities remained moderate (10 %) in the 2 most marine stations, whereas a light peak of mortality (15 %) was recorded in July in the most continental station. Any of the physico-chemical parameters...
Tipo: Text Palavras-chave: Huître creuse; Crassostrea gigas; Rivière d'Auray; Quiberon; Mortalité; Vitalité; Valvomètre; Force musculaire; Perte de sel; Cupped oyster; Spat; Gigas; Auray river; Of Quiberon; Mortality; Vitality; Valvometer; Muscle force; Salt loss; Hermeticity.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/00025/13632/10713.pdf
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Cultures et élevages de masse dans le contexte d'une écloserie-nurserie de mollusques bivalves : les productions phytoplanctoniques et le grossissement des post-larves ArchiMer
Le Borgne, Y.; Marin, J.; Vergonzanne, G..
The hatchery-nursery from the Société Atlantique de Mariculture settled in Barfleur studied within the ECOTRON program set up by C.N.E.X.O. the characteristics of mass cultures for monospecific phytoplancton and of the rearing of oyster spat (Ostrea edulis. Crassostrea giqas) and clam spat (Venerupis semi­decussata) . The maintenance features of the cultures in order to obtain cell densities around 1 million cell/ml. (or 50 g. of dry weight/m3) in containers up to 5000 liters have been established for the main species used in aquaculture (Isochrysis qalbana. Monochrysis lutheri, Tetraselmis suecica. Skeletonema costatum. Phaeodactylum tricornutum. Cyclotella nana, Chaetoceros calcitrans). The spat growth in nursery without providing any cultured food...
Tipo: Text Palavras-chave: Écloserie; Nurserie; Phytoplancton; Bivalves; Naissain; Hatchery; Nursery; Phytoplancton; Bivalves; Spat.
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00305/41658/40867.pdf
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Déterminisme du recrutement larvaire de l’huître creuse (Crassostrea gigas) dans la lagune de Thau. ArchiMer
Lagarde, Franck; Fiandrino, Annie; Richard, Marion; Bernard, Ismael; Mortreux, Serge; Ubertini, Martin; Chiantella, Claude; Boj, Marie; Meddah, Slem; Leurion, Axel; Soriano, Solenn; Fuhrmann, Marine; Le Gall, Patrik; Chiera, Caroline; Berteaux, Tom; Guillou, Jean-louis; Roque D'Orbcastel, Emmanuelle; Perignon, Adeline; Bonnet, Delphine; Roques, Cecile; Bec, Beatrice; Cochet, Helene; Gervasoni, Erika; Miron, Gilles; Pouvreau, Stephane.
Since spat mortality events that were firstly detected in 2008, Mediterranean shellfish industry seeks to exploit the Pacific oyster spat from lagoon natural recruitment. The CRCM, Cepralmar and Ifremer developed accordingly a research project named PRONAMED Phase 1 and 2 - 2010-2014, in order to define the economic potential of spatfall and improve knowledge of the reproductive cycle of Crassostrea gigas in this specific environmental context. The results of the past three year‘s study (2012, 2013, 2014) showed that broodstock have the ability to provide larvae after sexual maturation and spawning. A coincidence was noted between moon phase (new and full moon) and spawnings with an amplifying effect of storms on the intensity of spawning (Ubertini et al....
Tipo: Text Palavras-chave: Lagune; Recrutement; Naissain; Huître creuse; Ecologie larvaire; Cycle de reproduction; Captage naturel.; Lagoon; Recruitment; Spat; Pacific oysters; Larval ecology; Reproduction Cycle; Natural spat collection..
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00279/39054/37620.pdf
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Effects of age and environment on the summer mortality in cupped oyster Crassostrea gigas during the first two years ArchiMer
Degremont, Lionel; Boudry, Pierre; Soletchnik, Patrick; Bedier, Edouard; Ropert, Michel; Samain, Jean-francois.
Three successive generations were produced between 2001 and 2003 to assess to what extent genetic variability exists for survival in juvenile oysters Crassostrea gigas. For each generation, two groups were selected for their high ("R" for resistant) and low ("S" for susceptible) survival. Significant differences in mortality were observed during the first year in Riviere d'Auray (RA) (Brittany-France). However, low and similar mortality were observed for both groups, with no significant difference between groups in the first and second generation in this site, where the first summer is the critical, sensitive period with a clear age effect. In Baie des Veys (BDV) (Normandie-France), where mortalities usually mainly affect adults, mortality between groups,...
Tipo: Text Palavras-chave: Crassostrea gigas; Spat; Spatial variations; Survival; Rearing; Mollusc culture; Marine molluscs; Environmental factors; Nursery grounds; Mortality causes; Biological age; Aquaculture techniques.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/acte-3385.pdf
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Effet de traitements thermiques sur la résistance du naissain d’huître creuse au phénomène de mortalité massive - THERMARES ArchiMer
Pernet, Fabrice; Petton, Bruno; Tamayo, David.
L’objectif de cette étude vise à déterminer l’effet de basses températures (10°C et 13°C) pendant des durées variables (0 et 80 jours) sur la survie du naissain d’huîtres creuses préalablement infecté suite à une exposition en rade de Brest pendant 5 ou 8 jours. Le naissain d’huître creuse préalablement infecté par OsHV-1 µvar par exposition en milieu naturel pendant 5 d ou 8 d, puis transféré à basse température (10°C ou 13°C) pendant 5 à 80 d, présente des mortalités plus faibles et plus tardives que les animaux témoins en laboratoire. La réduction des mortalités observée dans le naissain exposé à basse température coïncide avec une diminution progressive des concentrations d’ADN appartenant à OsHV-1 dans les tissus, au point de devenir non-détecté ou...
Tipo: Text Palavras-chave: Huître creuse; Naissain; Mortalité massive; OsHV-1 μvar; Température; Pacific oyster; Mass mortality; OsHV-1 μvar; Spat; Temperature.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00210/32135/30592.pdf
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Evolution et estimation des mortalités estivales de naissain d'huître creuse (Crassostrea gigas) en baie de Quiberon, de mai à septembre 1998. ArchiMer
Martin, Anne-genevieve; Fleury, Pierre-gildas; Tige, Gilbert; Hirata, Toshio; Le Coguic, Marie-jo; Langlade, Aime; Mazurie, Joseph; Ostréiculteurs de la baie de Quiberon.
La question des mortalités estivales de naissains d'huîtres creuses en baie de Quiberon a été abordée selon deux approches complémentaires, l'une plus temporelle, avec le suivi estival régulier de quelques semis, l'autre plus spatiale avec une estimation en plongée des survies en fin d'été d'un plus grand nombre de semis répartis à travers la baie. Le suivi de l'évolution des semis a permis de dater et de quantifier les mortalités estivales sur plusieurs périodes (juin et août essentiellement) ; mais il n'a pas permis d'en identifier les causes. Le rôle des pathogènes, notamment, n'est pas défini. Par ailleurs, l'estimation spatiale des mortalités en fin d'été met en évidence des mortalités nettement différenciées entre les semis (entre 6 et 48%). Parmi...
Tipo: Text Palavras-chave: Huître creuse; Crassostrea gigas; Naissain; Quiberon; Mortalité; Croissance; Vitalité; Pathologie; Herpès-virus; Pacifie cupped oyster; Crassostrea gigas; Spat; Quiberon (France); Mortality; Growth; Vitality; Pathology; Herpes-virus.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/00102/21326/18949.pdf
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Gestion des ressources génétiques de l'huître perlière Pinctada margaritifera de Polynésie française : caractérisation génétique des populations et optimisation du recrutement pour l'exploitation perlière ArchiMer
Arnaud, Sophie; Goyard, Emmanuel; Prou, Jean; Vonau, Vincent; Bonhomme, Francois; Boudry, Pierre.
Exploitation of the pearl oyster Pinetada margaritifera, which has developed in French Polynesia over the last twenty years, is based mainly on the collection of natural spat. Recruitment is highly variable in space and time and so spat is very often transferred by the farmers between atolls or even between archipelagos. In previous studies, anonymous nuclear markers demonstrated that This development has coincided with a genetic homogenisation of the wild stocks since the 1980s. This suggests a high level of reproductive success on farms, which is likely to be due to the high density of animaIs when compared to the density in the wild. We used the same markers to show that the level of genetic variability observed on farms is not significantly different...
Tipo: Text Palavras-chave: French Polynesia; Genetic diversity; Spat; Pinctada margaritifera; Pearl oyster; Polynésie française; Diversité génétique; Naissain; Pinctada margaritifera; Huître perlière.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/publication-3822.PDF
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Herpesviruses associated with mortalities among Pacific oyster, Crassostrea gigas, in France-Comparative study ArchiMer
Renault, Tristan; Le Deuff, Rose-marie; Cochennec, Nathalie; Maffart, Patricia.
Sporadic mortalities were reported in june and july of 1992 and 1993 among batches of hatchery-reared larval Pacifie oyster, Crassastrea gigas, and at the beginning of July and in August of 1993 among five batches of 3-7 month old young spats, C. gigas. Observations with transmission electron microscope showed the presence of herpes-like virus particles in infected larvae and young spats. The viruses observed in diseased larvae and affected young spat oysters were very similar. Elevated temperature and crowding may increase susceptibility of oysters to these herpes-like virus infections.
Tipo: Text Palavras-chave: Spat; Larvae; Crassostrea gigas; Pacific oysters; Mortality; Herpes like virus; Naissain; Larve; Crassostrea gigas; Huître japonaise; Mortalités; Herpès like virus.
Ano: 1994 URL: http://archimer.ifremer.fr/doc/1994/publication-2898.pdf
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Incorporation of different fatty acids, supplied as emulsions or liposomes, in the polar and neutral lipids of <i>Crassostrea gigas</i> spat OMA
Caers, M.; Coutteau, P.; Sorgeloos, P..
Pacific oysters spat (<i>Crassostrea gigas</i>) were fed an algal diet (<i>Tetraselmis suecica</i>) whether or not supplemented with emulsions or liposomes rich in 18:1<i>n</i>-9, 18:2<i>n</i>-6 and 22:6<i>n</i>-3. The preferential accumulation and partitioning of the latter fatty acids between the polar and neutral lipids of <i>C. gigas</i> spat were followed. Additionally, the efficiency of emulsions and liposomes as fatty acid carriers for <i>C. gigas</i> spat were compared. The incorporation of dietary fatty acids was found to vary substantially according to the fatty acid carrier (emulsions vs. liposomes), the particular fatty acid (18:1<i>n</i>-9,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fatty acids; Feeding experiments; Larval development; Lipids; Liposomes; Liposomes; Oyster culture; Polyunsaturated fatty acids; Spat; Crassostrea gigas [Portuguese oyster].
Ano: 2000 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3512
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Influence of OSHV-1 oyster mortality episode on dissolved inorganic fluxes: An ex situ experiment at the individual scale ArchiMer
Richard, Marion; Bourreau, Juliette; Montagnani, Caroline; Ouisse, Vincent; Le Gall, Patrik; Fortune, Martine; Munaron, Dominique; Messiaen, Gregory; Callier, Myriam; Roque D'Orbcastel, Emmanuelle.
Ostreid herpesvirus 1 (OsHV-1 μvar) infection has caused significant mortalities in juvenile oysters (Crassostrea gigas). In contrast to the practices of other animal production industries, sick and dead oysters are not separated from live ones and are left to decay in the surrounding environment, with unknown consequences on fluxes of dissolved materials. A laboratory approach was used in this study to test the influence of oyster mortality episode on dissolved inorganic fluxes at the oyster interface, dissociating (i) the effect of viral infection on metabolism of juvenile oysters and (ii) the effect of flesh decomposition on oxygen consumption and nutrient releases at the individual scale. Nine batches of juvenile oysters (Individual Total wet weight...
Tipo: Text Palavras-chave: Crassostrea gigas; Mortality; Ostreid herpesvirus 1; Juvenile; Spat; Mineralisation; Oxygen consumption; Nutrient fluxes.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00378/48973/49380.pdf
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La mytiliculture dans le "Pertuis Breton": synthèse des travaux réalises de 1980 a 1992 ArchiMer
Dardignac, Marie-jose.
The studies carried out between 1980 and 1992 in the "Pertuis Breton" showed that mussels growth was systematically reduced near the coastline for an identical immersion time. No relationship was established between current pattern, stocking biomass and growth results. In contrast, poor growth was strongly correlated to seawater quality and especially to high seston load. The author suggests further studies which could confirm and complement these results: a better environment understanding through data acquisition, inclusion of additional parameters, studies on factors affecting shellfish quality. Furthermore, specific studies are proposed which are aimed at optimising mussel production in the Pertuis Breton. This includes a constant spat recruitment...
Tipo: Text Palavras-chave: Bivalvia; Recruitment; Spat; Mussel culture; Growth; Bouchot; Mytilus edulis; Pertuis Breton; Moule; Growth; Bouchot; Mytilus edulis; Pertuis Breton.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/publication-1911.pdf
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Les pratiques culturales peuvent-elles permettre de réduire la surmortalité du naissain d'huîtres creuses? Récapitulatif des essais d'élevage et expérimentations zootechniques menés sur le territoire français entre 2008 et 2010 ArchiMer
Soletchnik, Patrick; Mazurie, Joseph; Allain, Gwenhael; Bedier, Edouard; Benabdelmouna, Abdellah; Blin, Jean-louis; Bouquet, Anne-lise; Cochet, Hélène; Degremont, Lionel; Gaussem, Florian; Gervasoni, Erika; Glize, Philippe; Petton, Bruno; Roussel, Pierre-yves; Pernet, Fabrice.
This paper summarizes knowledge about relations between husbandry practices and oyster spat mortalities since 2008 in France. These relations are strictly analyzed from a panel of experiments set on the shore (in outdoor experiments) by Ifremer teams and technical institutes all over French coasts. Results show some practices are able to reduce spat mortality with some influencing factors relevant of spat quality (sanitary status, natural or genetic selection) or husbandry practices. Spat “free” of virus is able to survive up to 90% when it is isolated and confined in ponds or nursery, during an epidemic crisis. When outbreaks occurred in oyster beds, natural or nursery spat died in almost same proportions. In 2010, some studies conducted in Mediterranean...
Tipo: Text Palavras-chave: Surmortalité; Naissain; Huître creuse; OsHV-1; Pratiques culturales; Mortality; Spat; Cupped oyster; Crassostrea gigas; OsHV-1; Cultural practices.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00032/14280/25847.pdf
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Mass mortality in bivalves and the intricate case of the Pacific oyster, Crassostrea gigas ArchiMer
Barbosa-solomieu, Valerie; Renault, Tristan; Travers, Marie-agnes.
Massive mortality outbreaks in cultured bivalves have been reported worldwide and they have been associated with infection by a range of viral and bacterial pathogens. Due to their economic and social impact, these episodes constitute a particularly sensitive issue in Pacific oyster (Crassostrea gigas) production. Since 2008, mortality outbreaks affecting C. gigas have increased in terms of intensity and geographic distribution. Epidemiologic surveys have lead to the incrimination of pathogens, specifically OsHV-1 and bacteria of the Vibrio genus, in particular Vibrio aestuarianus. Pathogen diversity may partially account for the variability in the outcome of infections. Host factors (age, reproductive status…) including their genetic background that has...
Tipo: Text Palavras-chave: Pacific oyster; Spat; OsHV-1; Vibrio aestuarianus; Mortality.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00274/38534/37051.pdf
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Mortalités massives de l’Huître creuse. Synthèse - Rapport final des études menées sur les mortalités de naissains d’huîtres creuses C. gigas sur le littoral charentais pour la période de 2007 à 2012 ArchiMer
Pepin, Jean-francois; Soletchnik, Patrick; Robert, Stéphane.
Since 2008, the French oyster-farming sector has been confronted with exceptionally high rates of mortality affecting spats (less than one year old) of the Pacific oyster, C. gigas, of between 60 and 90% at all rearing sites and in Pertuis Charentais sea. The objective of this document is to provide an overview of the research and studies carried out by Ifremer in Poitou-Charentes since the emergence of this phenomenon. The actions presented were funded by IFREMER, and CPER Poitou-Charentes 2007-2013.
Tipo: Text Palavras-chave: Huître creuse; Naissain; Surmortalité; Virus herpès; Vibrions; Environnement; Pertuis charentais; Pacific oyster; Spat; Mortality; Herpes virus; Vibrios; Environment; Pertuis charentais..
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00217/32856/31335.pdf
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Mortality associated with OsHV-1 in spat Crassostrea gigas: role of wild-caught spat in the horizontal transmission of the disease ArchiMer
Degremont, Lionel; Benabdelmouna, Abdellah.
The French oyster production of Crassostrea gigas is based on two sources of spat: wild-caught (WC) and hatchery-produced (HP). Massive mortality related to the ostreid herpesvirus type 1 (OsHV-1) has affected both sources in France since 2008. We investigated the mortality in juvenile C. gigas due to the horizontal transmission of OsHV-1 within (separated condition) and between (mixed condition) the two spat sources in three environments from April to June 2010. In the separated condition, no mortality was observed in the HP batches, while the WC batches experienced moderate to high mortality (40–80 %). In contrast, the WC and HP batches experienced high mortality in all tested environments for the mixed condition. At the beginning of the trial, the HP...
Tipo: Text Palavras-chave: Crassostrea gigas; Wild-caught; Hatchery-produced; Spat; Mortality; Horizontal transmission; Ostreid herpesvirus OsHV-1.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00188/29921/28387.pdf
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Nursery culturing of bivalve spat in heated seawater OMA
Claus, C.; Van Holderbeke, L.; Maeckelberghe, H.; Persoone, G..
The controlled nursery culturing of mollusc spat produced to date by millions in commercial hatcheries is an intermediate step in mollusc farming which is receiving more and more attention. Different technologies for nursery culturing indoors as well as outdoors have been developed at different places.The principles are always basically the same and consist of culturing postlarvae of a few millimeters to a size of a few centimeters in densities as high as possible in specific devices containing seawater which is eventually enriched with live unicellular algae or inert foods. This paper reports on the first results obtained in Belgium in an indoor experimental nursery with spat of <i>Ostrea edulis, Crassostrea gigas</i> and <i>Venerupis...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mollusc culture; Spat; Bivalvia.
Ano: 1981 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3402
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Observer, Analyser et Gérer la variabilité de la reproduction et du recrutement de l’huître creuse en France : Le Réseau Velyger. Rapport annuel 2014 ArchiMer
Pouvreau, Stephane; Petton, Sebastien; Queau, Isabelle; Haurie, Axel; Le Souchu, Pierrick; Alunno-bruscia, Marianne; Palvadeau, Hubert; Auby, Isabelle; Maurer, Daniele; D'Amico, Florence; Passoni, Sarah; Barbier, Claire; Tournaire, Marie-pierre; Rigouin, Loic; Rumebe, Myriam; Fleury, Elodie; Fouillaron, Pierre; Bouget, Jean-francois; Pepin, Jean-francois; Robert, Stephane; Grizon, James; Seugnet, Jean-luc; Chabirand, Jean-michel; Le Moine, Olivier; Guesdon, Stephane; Lagarde, Franck; Mortreux, Serge; Le Gall, Patrik; Messiaen, Gregory; Roque D'Orbcastel, Emmanuelle; Quemener, Loic; Repecaud, Michel; Mille, Dominique; Geay, Amelie; Bouquet, Anne-lise.
La conchyliculture, et principalement l’élevage de l’huître creuse, Crassostrea gigas, constitue la principale activité aquacole française. Cette activité repose, en grande partie, sur le recrutement naturel de l’espèce qui assure 70% des besoins en jeunes huîtres (naissain) : cette activité de collecte s’appelle le captage. Les deux principaux centres de captage en France sont les bassins d’Arcachon et de Marennes-Oléron. Or, depuis une dizaine d'années, sur le bassin d'Arcachon, le captage devient très variable: à des années de captage nul (par exemple les années 2002, 2005, 2007) ou faible (2009, 2010, 2011) succèdent des années excellentes voire pléthoriques (les années 2003, 2006, 2008, 2012, 2013). A Marennes-Oléron, cette variabilité existe, mais...
Tipo: Text Palavras-chave: Huître creuse; Naissain; Recrutement; Captage; Larves; Cycle de reproduction; Changement climatique; Pacific oyster; Spat; Recruitment; Spat collecting; Larvae; Reproductive cycle; Climate change.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00279/38990/37561.pdf
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Observer, Analyser et Gérer la variabilité de la reproduction et du recrutement de l’huître creuse en France : Le Réseau Velyger. Rapport annuel 2015 ArchiMer
Pouvreau, Stephane.
La conchyliculture, et principalement l’élevage de l’huître creuse, Crassostrea gigas, constitue la principale activité aquacole française. Cette activité repose, en grande partie, sur le recrutement naturel de l’espèce qui assure 60 à 70% des besoins en jeunes huîtres (naissain) : cette activité de collecte s’appelle le captage. Les deux principaux centres de captage en France sont les bassins d’Arcachon et de Marennes-Oléron. Or, depuis une dizaine d'années, sur le bassin d'Arcachon, le captage devient très variable: à des années de captage nul (par exemple 2002, 2005, 2007) ou faible (2009, 2010, 2011) succèdent des années excellentes voire pléthoriques (2003, 2006, 2008, 2012, 2014). A Marennes-Oléron, cette variabilité existe, mais s’avère beaucoup...
Tipo: Text Palavras-chave: Huître creuse; Naissain; Recrutement; Captage; Larves; Cycle de reproduction; Changement climatique; Pacific oyster; Spat; Recruitment; Seed collecting; Larvae; Reproductive cycle; Climate change.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00334/44533/44240.pdf
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