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Registros recuperados: 6
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A DEB model to predict accumulation and detoxification of paralytic shellfish toxins by the Japanese Oyster (Crassostrea gigas) ArchiMer
Pousse, Emilien; Jean, Frédéric; Alunno-bruscia, Marianne; Flye Sainte Marie, Jonathan.
France being the largest consumer of oysters in Europe, oyster farming is deeply rooted in French heritage. The Japanese oyster (Crassostrea gigas) is the oyster species the most exploited in France, and in the world. Due to filter-feeding, these bivalves are sensitive to toxic algal blooms. Although not always lethal, toxic algae can affect oyster physiology and make it unfit for human consumption. Phytoplankton toxins can be classified in several groups: amnesic, neurotoxic, diarrhetic and paralytic. For the latter group, saxitoxins are synthesized by the microalgae of genus Alexandrium that can accumulate bivalve tissues. In recent years, number of studies have been performed on the interactions between C. gigas and saxitoxins. In order to better...
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Ano: 2015 URL: http://archimer.ifremer.fr/doc/00307/41859/41100.pdf
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A quantitative estimation of the energetic cost of brown ring disease in the Manila clam using Dynamic Energy Budget theory ArchiMer
Flye Sainte Marie, Jonathan; Jean, Fred; Paillard, Christine; Kooijman, Sebastiaan.
Brown ring disease (BRD) in the Manila clam, Ruditapes philippinarum, is a bacterial disease caused by the pathogen Vibrio tapetis. This disease induces the formation of a characteristic brown conchiolin deposit on the inner shell and is associated with a decrease in condition index indicating that the development of the disease affects the energy balance of the clam. A previous study showed that the energy budget of the host was affected by a decrease in filtration activity, and hypothesized that a second way to degrade the energy balance was the increase in maintenance costs associated to the cost of immune response and lesion repair. This paper focusses on this second way of degradation of the energy balance. A starvation experiment confirmed that the...
Tipo: Text Palavras-chave: Maintenance Cost; Dynamic Energy Budget Theory; Energetic Cost; Energy Budget; Brown Ring Disease; Manila Clam.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6787.pdf
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Effects of of hypoxia on metabolic functions in marine organisms: Observed patterns and modelling assumptions within the context of Dynamic Energy Budget (DEB) theory ArchiMer
Thomas, Yoann; Flye Sainte Marie, Jonathan; Chabot, Denis; Aguirre-velarde, Arturo; Marques, Gonçalo M; Pecquerie, Laure.
Hypoxia is a decrease in dissolved oxygen that causes physiological disturbances in marine fishes and invertebrates, including reduced mobility, growth rate and reproductive success, altered phenology and increased vulnerability to diseases. Under pressure from global changes such as warming or eutrophication, ocean and coastal ecosystems worldwide are becoming less oxygenated. In order to better understand the consequences of hypoxia on marine systems, there is a need for predicting hypoxia-induced changes from individual organisms to populations. By combining the effect of several stressors on species metabolic performances and life-history traits across their full life-cycle, the Dynamic Energy Budget (DEB) theory offers a suitable framework for...
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Ano: 2019 URL: https://archimer.ifremer.fr/doc/00473/58466/65967.pdf
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Growth and distribution of the great scallop (Pecten maximus) in the English Channel: a modelling approach. ArchiMer
Le Goff, Clement; Lavaud, Romain; Cugier, Philippe; Jean, Frédéric; Flye Sainte Marie, Jonathan.
The great scallop Pecten maximus is currently the most important species in landings (as well in tons as in value) for the French inshore fleet of the English Channel. A French scientific program “COMANCHE” funded by the French National Research Agency (ANR) was conducted to improve our knowledge on the great scallop within its ecosystem, in an integrated way and over the whole area of the English Channel. In that context, the aim of this study is to better understand the determinism of the growth and distribution of the great scallop in the English Channel, integrating both physical and trophic constraints through a modelling approach. The used method is based on the coupling of a 3D hydrodynamical model (MARS3D developed at Ifremer) providing...
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Ano: 2013 URL: http://archimer.ifremer.fr/doc/00139/24987/23087.pdf
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Impact of Brown Ring Disease on the energy budget of the Manila clam Ruditapes philippinarum ArchiMer
Flye Sainte Marie, Jonathan; Pouvreau, Stephane; Paillard, Christine; Jean, Fred.
Brown Ring Disease (BRD) is a bacterial disease caused by the pathogen, Vibrio tapetis. The disease induces formation of a brown deposit on inner shell of the Manila clam, Ruditapes philippinarum. Development of this disease is correlated with a decrease in the condition index of infected clams. Experiments were conduced in order to assess the effect of the development of BRD on two parameters affecting the energy balance of the clams: the clearance and the respiration rates. Experiments were performed in a physiological measurement system that allowed simultaneous measures of clearance and respiration rates. During both acclimation and measurements clams were fed with cultured T-iso and temperature was close to seasonal field temperature (10 degrees C....
Tipo: Text Palavras-chave: Ruditapes philippinarum; Respiration rate; Filtration; Energy budget; Clearance rate; Brown Ring Disease.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-3013.pdf
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Individual mussel growth model using DEB (Dynamic Energy Budget) theory: revisiting the DEB parameter values for Mytilus edulis ArchiMer
Flye Sainte Marie, Jonathan; Alunno-bruscia, Marianne; Gangnery, Aline; Rannou, Eric; Rosland, Rune; Strand, Øivind.
Mussel aquaculture is well developed in various ecosystems of temperate waters. In the aim of developing predictive tools for management of mussel aquaculture, a better understanding of relationships between the environmental conditions and mussel growth is necessary. For this purpose, development of bioenergetic models, linking environmental variables (especially food resource and temperature) and mussel growth and reproduction, are of a particular interest. Dynamic Energy Budget (DEB) theory offers a general framework to study energy flows in organisms, from assimilation to use for maintenance, growth and reproduction. This theory is appropriate for growth modelling of marine organisms and have first been applied in 1993 to model mussel growth....
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Ano: 2009 URL: http://archimer.ifremer.fr/doc/00032/14368/11658.pdf
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