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Registros recuperados: 8
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A coupled movement and bioenergetics model to explore the spawning migration of anchovy in the Bay of Biscay ArchiMer
Politikos, Dimitrios; Huret, Martin; Petitgas, Pierre.
Adult anchovies in the Bay of Biscay perform north to south migration from late winter to early summer for spawning. However, what triggers and drives the geographic shift of the population remains unclear and poorly understood. An individual-based fish model has been implemented to explore the potential mechanisms that control anchovy's movement routes toward its spawning habitats. To achieve this goal, two fish movement behaviors – gradient detection through restricted area search and kinesis – simulated fish response to its dynamic environment. A bioenergetics model was used to represent individual growth and reproduction along the fish trajectory. The environmental forcing (food, temperature) of the model was provided by a coupled...
Tipo: Text Palavras-chave: Individual-based model; Behavioral movement; Dynamic Energy Budget; Anchovy; Bay of Biscay.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00273/38446/36868.pdf
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A Dynamic Energy Budget (DEB) growth model for Pacific oyster larvae, Crassostrea gigas ArchiMer
Rico-villa, Benjamin; Bernard, Ismael; Robert, Rene; Pouvreau, Stephane.
Tipo: Text Palavras-chave: Dynamic Energy Budget; Crassostrea gigas; Bivalve larvae; Ecophysiology; Growth.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00009/11996/9040.pdf
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Application of a bioenergetic growth model to larvae of the pearl oyster Pinctada margaritifera L. ArchiMer
Thomas, Yoann; Garen, Pierre; Pouvreau, Stephane.
We applied, for the first time, a dynamic energy budget (DEB) growth model to the larval phase in the pearl oyster Pinctada margaritifera var. cumingii (Linnaeus, 1758) to evaluate the impact of spatio-temporal variation in the atoll lagoon environment on its capacity for development. The specific parameters of the model, which represent ingestion, temperature effect and the relationship between length and biovolume of the larvae, were determined from experiments or taken from the literature. The interpretation of the values of these parameters allowed us to identify the underlying adaptive character trait: P. margaritifera larvae have a good capacity to exploit low food concentrations and a narrow range of thermal tolerance restricted to hydrobiological...
Tipo: Text Palavras-chave: Growth Model; Dynamic Energy Budget; Larva; Pinctada Margaritifera; Atoll Lagoon.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00048/15919/13346.pdf
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Modélisation basée sur la théorie des budgets d’énergie dynamiques (DEB) de la cinétique de bioaccumulation des toxines paralysantes (PST) par l’huître creuse Crassostrea gigas ArchiMer
Pousse, Emilien.
The oyster Crassostrea gigas is one of the most commercialized molluscs in the world. It is a very cosmopolitan species that has been disseminated by humans and is susceptible to various agents such as pathogens (bacteria, viruses), parasites, xenobiotics and/or toxic micro-algae. As a filter-feeder, it may accumulate phyco- toxins while feeding on harmful algal blooms (HAB), including paralytic shellfish toxins (PST). To protect human health shellfisheries harvesting are closed dur- ing HAB, impacting the aquaculture industry. This PhD work aims to develop a Dynamic Energy Budget (DEB) based model to describe kinetics of PST accumulation and detoxification in C. gigas. Interest of coupling bio-accumulation to DEB model lies in the inclusion of...
Tipo: Text Palavras-chave: Budgets d’Énergie Dynamiques; Toxines paralysantes; Pacific oyster; Cinétiques d’accumulation; Écotoxicologie; Dynamic Energy Budget; Paralytic Shellfish Toxins; Pacific oyster; Accumulation kinetics; Ecotoxicology.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00456/56792/58631.pdf
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Modélisation de la bioaccumulation de métaux traces (Hg, Cd, Pb, Cu et Zn) chez la moule, Mytilus galloprovincialis, en milieu méditerranéen ArchiMer
Casas, Stellio.
Monitoring coastal contamination of trace metals using bivalve molluscs as quantitative bioindicators is widely used in many international monitoring programs. The bioaccumulation of metal within an organism results from the interaction between physiological (growth, loss of weight, absorption, accumulation), chemical (metal concentration, speciation, bioavailability) and environmental factors (temperature, SPM, chlorophyll). By utilizing the parameters above in this study, it appears that modeling metal dynamics in marine mussels is a reliable tool. The model allows understanding the bioaccumulation process which results from the interactions between biological, chemical and environmental factors. One of the objective of this study was to couple a...
Tipo: Text Palavras-chave: Biomonitoring; Dynamic Energy Budget; Model; Trace metals; Bioaccumulation; Mytilus galloprovincialis; Mussel; Bioindicator; Surveillance; Budget énergétique dynamique; Modèle; Métaux traces; Bioaccumulation; Mytilus galloprovincialis; Moule; Bioindicateur.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/these-356.pdf
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Modélisation de la distribution d’espèces benthiques par l’utilisation d’une plateforme multi-agents ArchiMer
Razafimahefa, Ntsoa Rakoto.
In a context of climate change, understanding the response of species to changes in the environment and the implications for their geographic distribution is paramount. Species distribution models (SDM), through the formulation of relationships between the organism and its environment, provide a tool to explore species response to different types of environmental stresses. This study presents the development and a first application of a mechanistic and generic SDM, using a multi-agent modelling platform: NetLogo. The model allows to simulate the spatialized population dynamic of a bentho-pelagic species, in response to environmental variations. The model developed is an individual-based (IBM) mechanistic model, which incorporates a DEB (Dynamic Energy...
Tipo: Text Palavras-chave: Modèle de distribution d’espèce; Mytilus edulis; Dynamic Energy Budget; Connectivité; Recrutement; Compétition spatiale; Scénario de changement climatique; Species distribution model; Mytilus edulis; Dynamic Energy Budget; Connectivity; Recruitment space-limited recruitment; Climate change scenario.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00405/51631/52187.pdf
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Modelling trace metal (Hg and Pb) bioaccumulation in the Mediterranean mussel, Mytilus galloprovincialis, applied to environmental monitoring ArchiMer
Casas, Stellio; Bacher, Cedric.
Bioaccumulation of metal within an organism results from interactions between physiological factors (growth, weight loss, absorption and accumulation), chemical factors (metal concentration, speciation and bioavailability) and environmental factors (temperature and food concentration). To account for such interactions in the mussel Mytilus galloprovincialis, we combined bioaccumulation and Dynamic Energy Budget models. Field experiments were conducted to measure uptake and elimination kinetics for two metals (Hg and Pb) in three Mediterranean sites with differences in contamination levels, and to calibrate the models. Metal uptake from water and from food was considered separately. Metal elimination resulted from reproduction and/or from direct excretion....
Tipo: Text Palavras-chave: RINBIO; Inverse analysis; Dynamic Energy Budget; Bio indicator.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-1965.pdf
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Use of dynamic energy budget and individual based models to simulate the dynamics of cultivated oyster populations ArchiMer
Bacher, Cedric; Gangnery, Aline.
We successfully tested a Dynamic Energy Budget (DEB) model of the oyster Crassostrea gigas using published environmental data and growth data collected in Than lagoon (France). Estimates of most DEB parameters were based on independent datasets and only two parameters were calibrated using our datasets: the shape parameter, which was used to convert body volume into shell length, and the half-saturation coefficient, which controlled the functional response of assimilation to food concentration, represented by chlorophyll-a concentration. The DEB model proved to be robust and generic: it was able to reproduce oyster growth in Than lagoon and other ecosystems. We also assessed population dynamics by coupling DEB equations and an Individual Based Model (IBM)...
Tipo: Text Palavras-chave: Thau Lagoon; Growth variability; Harvested production; Dynamic Energy Budget; Crassostrea gigas.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-2329.pdf
Registros recuperados: 8
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