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| Registros recuperados: 56 | |
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| Bacher, Cedric; Baud, Jean-pierre; Bodoy, Alain; Deslous-paoli, Jean-marc; Dreno, Jean-paul; Heral, Maurice; Maurer, Daniele; Prou, Jean. |
| An assessment of the reared stocks of the Pacific oyster (Crassostrea gigas ) has been recently conducted on the major French areas of molluscs culture. The methodology proposed included both estimates of densities obtained by subsampling in the field, and aerial photographs which covered the cultivated, intertidal area. The size and the number of samples were designed to reach a precision of 10% on the final assessment in each area. The field work consisted in weighing and counting the oyster in unit areas of 0.5 m2 for the bottom culture or in trays or bags, for the off bottom technique. These results give a better knowledge of the technique evolution and of the general structures in the cultivated areas. |
| Tipo: Text |
Palavras-chave: Modeling; Estimation; Stocks; Crassostrea gigas; Oysters. |
| Ano: 1986 |
URL: http://archimer.ifremer.fr/doc/1986/acte-2864.pdf |
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| Bodoy, Alain. |
| The natural mortality of oysters could by considered, in a man controlled ecosystem, as the result of the action of biological factors, and human factors other then the harvest of the population. Such mortalities need to be estimated in order to be used in population dynamics, as a tool for management purposes. ln Marennes-Oleron bay, different ways of estimating the natural mortality are available. Several oyster farms were monitored for assessing growth, mortality and production in rearing conditions. Furthermore, an experimental framework which includes 15 stations gave an appraisal of the same factors under controlled conditions. Finally, another estimate will be soon available by comparin9 the number of recruited oysters, and the number of oyster... |
| Tipo: Text |
Palavras-chave: Marennes Oleron; Mortality; Crassostrea gigas; Oysters. |
| Ano: 1986 |
URL: http://archimer.ifremer.fr/doc/1986/acte-2962.pdf |
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| Silva, Celine; Raillard, Marieke; Bodoy, Alain; Hussenot, Jerome. |
| In spring 2001, during a complete tidal cycle, nitrogen fluxes between the sea and the salt marsh were calculated. The marsh (1198 m2) covered in 75 % by halophytes, with 46 % by the sea purslane, Halimione portulacoides. The nitrogen balance shows that the salt marsh imports nitrogen micro-particules (2,09 g) by sedimentation, exports dissolved nitrogen (4,13 g), and that the macro-element part (-1,02 g in fauna and vegetable refuse) in the global mass balance (3,06 g) is not unimportant. Nitrogen fluxes are mainly under inorganic form for the incoming flux (mainly NO3), and under organic form for the outgoing flux. The halophyte vegetation of this marsh seems to play thus a dominating role in the tidal nitrogen exchanges, by a mechanical action on the... |
| Tipo: Text |
Palavras-chave: Marais salé; Halophytes; Azote; Bilan de masse; Halimione portulacoides; Salicornes; Salt marsh; Halophytes; Nitrogen; Mass balance; Halimione portulacoides; Sea purslane; Sampshire. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/00045/15597/13000.pdf |
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| Pouvreau, Stéphane; Tiapari, Jérôme; Gangnery, Aline; Garnier, M.; Lagarde, Franck; Robert, Stéphane; Jonquieres, Gerard; Teissier, Hinano; Prou, Jean; Bennett, Auguste; Caisey, Xavier; Haumani, Gaby; Buestel, Dominique; Bodoy, Alain. |
| Tipo: Text |
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| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/00041/15176/12513.pdf |
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| Bodoy, Alain; Garnier, Jacqueline; Heurtebise, Serge; Nollet, V.; Chagot, Dominique. |
| La croissance et la reproduction du pétoncle noir, Chlamys varia, ont été suivies sur un cycle biologique complet, dans un marais maritime. Cette croissance s'est avérée être nettement, plus rapide qu'en rade de Brest, puisque la taille commerciale de 35 mm a été atteinte en un an. Les individus se sont reproduits au bout de la même période. Ceci montre qu'il est possible d'obtenir un cycle biologique très rapide. Lors du cycle de production, des mortalités importantes ont été constatées entre le prégrossissement en nurserie et la mise en élevage. Ces mortalités ne se sont pas renouvelées sur le cycle en cours d'étude. Un agent parasite nouveau a été décrit sur cette espèce, sans que les certitudes puissent être établies quant à son rôle pathogène.... |
| Tipo: Text |
Palavras-chave: Croissance; Composition biochimique; Elevage; Pétoncle; Marais maritime; Charente-Maritime. |
| Ano: 1991 |
URL: http://archimer.ifremer.fr/doc/00048/15905/13333.pdf |
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| Bodoy, Alain; Bougrier, Serge; Geairon, Philippe; Garnier, Jacqueline; Boulo, Viviane; Heurtebise, Serge. |
| The flat oyster Ostrea edulis was originally reared in several regions of the European waters. The tidal saline ponds on the Atlantic coasts of France were highly productive before being hit by two consecutive epizooties. Parasitic diseases were described on this species, both of them leading 10 economic losses, as heavy mortalities have usually been recorded before the oysters reach the commercial size. Repeated experiments showed that the two diseases, Marteilia refringens and Bonamia ostreae are still active in this environment. Recently, some evidences were given that haemocytoblasts of Crassostrea gigas had the ability to lyze the Bonamia cells. Therefore, in an experiment of contiguous culture of the two species of oysters, the growth, mortality and... |
| Tipo: Text |
Palavras-chave: Molluscs; Mortalities; Growth; Pathology; Crassostra gigas; Ostrea edulis; Marteilia refringens; Bonamia ostreae. |
| Ano: 1991 |
URL: http://archimer.ifremer.fr/doc/1991/acte-3049.pdf |
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| Frid, Chris; Hammer, Cornelius; Law, Robin; Loeng, Harald; Pawlak, Janet F.; Reid, Philip C.; Tasker, Mark; Carlberg, Stig; Jakobsen, Tore Jakobsen; Rice, Jake Rice; Skjoldal, Hein Rune; Andrulewicz, Eugene; Bodoy, Alain; Calabrese, Anthony; Carlberg, Stig; Caspersen, Ove; Daan, Niels; Dahlin, Hans; Ehrich, Siegfried; Gentien, Patrick; Keizer, Paul; Leppänen, Juha-markku; Lima, Carmen; Margonski, Piotr; Noji, Tom; Nunes, Teresa; Rugg, Dornford; Sköld, Mattias. |
| Tipo: Text |
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| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00040/15135/12473.pdf |
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| Bodoy, Alain; Bacher, Cedric; Geairon, Philippe. |
| Une estimation du stock d' huîtres creuses en élevage dans le bassin de Marennes-Oléron a été effectuée en août 1986 . Le stock s'élevait alors à 90 000 tonnes, avec une précision de 8,4 %. Ce stock se répartit en 30 300 tonnes pour l'élevage à plat et 59 700 tonnes pour l'élevage en surélevé. Il s'est donc produit une augmentation des tonnages en élevage qui est de 9,4 % entre 1985 et 1986. L'augmentation de tonnage concerne surtout l 'élevage en surélevé, et plus particulièrement les huîtres fixées sur collecteurs. La séparation des classes d'âge au niveau des collecteurs a permis d'améliorer la précision des estimations. Elle a également permis de montrer l'importance de la classe d'âge de 1 an (16 900 tonnes), qui correspond au captage particulièrement... |
| Tipo: Text |
Palavras-chave: Ostréiculture; Stocks; Croissance; Production; Huîtres creuses. |
| Ano: 1987 |
URL: http://archimer.ifremer.fr/doc/00048/15903/13331.pdf |
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| Registros recuperados: 56 | |
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