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Registros recuperados: 5
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Analyse des ressources et des caractéristiques individuelles du stock d'oursin Paracentrotus lividus (Lamarck, 1816) du territoire 64 ArchiMer
De Casamajor, Marie-noelle; Mahias, Jeremy; Bru, Noelle; Caill-milly, Nathalie.
A spatial sampling was carried out for stock assessment of sea urchin P. lividus throughout the Basque coast. A sampling, over the year, was conducted to study the reproductive cycle. This work took place over 2013 and 2014. Reproduction occurs once in spring, between May and August 2014. Among factors affecting the release of eggs, salinity, temperature and hydrodynamics show a significant inter-annual variability in the Basque coast. Thus, the period set in 2014, may fluctuate between years. For the stock, the results showed that 11.85 (+/-0.32) million individuals of harvestable biomass for 724 tones (+/- 137). Stock is spread over the entire surveyed area density and biomass decrease rapidly with depth, individuals are mainly located between 0 and 5 m....
Tipo: Text Palavras-chave: Oursin commun; Stock; Biomasse; Reproduction; Côte basque; Conditions environnementales; Sea urchin; Stock; Biomass; Reproduction; Basque coast; Environmental conditions.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00218/32889/31373.pdf
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Ecologie de la faune associée aux émissions de fluides froids de Méditerranée orientale profonde ArchiMer
Ritt, Benedicte.
The major objectives of this thesis were to study the structure, functioning and dynamics of different faunal assemblages associated with cold seep ecosystems in the eastern Mediterranean Sea. We focused our study on three main sites: the Marmara Sea, the Mediterranean ridge and the Nile deep sea fan. This thesis aims at determining the environmental signature of Mediterranean sites and the characteristics of the associated fauna at European and global scales. The specific objectives were to (1) determine the composition, diversity, density, biomass of invertebrate assemblages, (2) characterize biogeochemical conditions within different microhabitats in the vicinity of organisms, (3) to define the trophic relationships amongst seep fauna using stable...
Tipo: Text Palavras-chave: Emissions de fluides froids; Volcans de boue; Pockmarks; Méditerranée orientale; Faune benthique; Conditions environnementales; Indices de diversité; Cold seeps; Eastern Mediterranean; Mud volcanoes; Pockmarks; Benthic fauna; Environmental conditions; Diversity indices.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00020/13138/10178.pdf
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Environnement et immunomodulation : étude d'activités hémocytaires chez l'huître creuse, Crassostrea gigas ArchiMer
Gagnaire, Beatrice.
Depuis plusieurs décennies, l'ostréiculture est une activité économique importante en France et particulièrement en Charente-Maritime. En effet, le bassin de Marennes-Oléron est le premier bassin français producteur d'huîtres, notamment l'huître creuse, Crassostrea gigas. Cependant, cette zone est soumise à de nombreuses pollutions de nature anthropique. Les industries rejettent du mercure en quantité importante dans la Charente. De plus, du fait des courant locaux, le cadmium, présent en grande quantité dans le bassin de la Gironde, est également retrouvé dans le bassin de Marennes-Oléron. Les effets de ces polluants sur les animaux présents dans ces zones d'estuaires sont encore peu connus, bien que de nombreuses études soient en cours de développement....
Tipo: Text Palavras-chave: Crassostrea gigas; Hémocytes; Cytométrie de flux; Métaux lourds; Phénoloxydase; Conditions environnementales; Origine génétique.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/00032/14344/11628.pdf
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Mise au point technique de l'élevage de l'ombrine Sciaenops ocellata. Document 5 : Le grossissement ArchiMer
Soletchnik, Patrick; Goyard, Emmanuel; Thouard, Emmanuel.
Aux USA, et plus particulièrement en Caroline du sud, l'étude de la croissance de l'ombrine, a commencé dès 1947, à partir des populations naturelles retenues dans les marais salants (Lunts 1951, d'après Smith et al, 1985) puis se sont poursuivies (Theling and Loyacano 1976), également en Louisiane (Beckman et al, 1988 ; Boothby et Avault, 1971 ; Bass et Avault, 1975). En élevage, très peu de données existent sur les performances de croissance de cette espèce jusqu'à une taille commercialisable. Hopkins et al, (1987) fait part de quelques résultats en bassin de terre. Peu de travaux existent sur les besoins alimentaires de l'espèce (Daniels et Robinson, 1986 Williams et Robinson, 1988, Robinson, 1988). Dans le cadre du programme de mise au point technique...
Tipo: Text Palavras-chave: Elevage; Ombrine; Sciaenops ocellata; Conditions environnementales; Croissance; Grossissement.
Ano: 1990 URL: http://archimer.ifremer.fr/doc/00132/24372/22385.pdf
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Summer mortality of the Pacific cupped oyster Crassostrea gigas in the Bay of Marennes-Oleron (France) ArchiMer
Goulletquer, Philippe; Soletchnik, Patrick; Le Moine, Olivier; Razet, Daniel; Geairon, Philippe; Faury, Nicole.
A comprehensive research program has been developed since 1995 to focus on C. gigas abnormal mortality rates occurring regularly during the summer period in the Bay of Marennes Oleron (France). Several subprojects were carried out including in-vitro ecophysiological studies to asses l) the relationship between reproductive status, scope for growth and mortality, 2) effects of stress temperature on physiological functions. Meanwhile, field studies concerned monitoring surveys of calibrated oyster populations at various emersion time and geographic sites. A database was developed and incorporated into a geographic information system (GIS) to overlay several layers of information and establish relationship among environmental parameters and mortality rates....
Tipo: Text Palavras-chave: Marennes Oleron bay; In situ continuous monitoring; Ecophysiology; Stress; Environmental conditions; Summer mortality; Crassostrea gigas; Marennes Oléron; In situ en continu; Suivis environnementaux; Ecophysiologie; Stress; Conditions environnementales; Mortalité estivale; Crassostrea gigas.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/1998/acte-3093.pdf
Registros recuperados: 5
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