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Registros recuperados: 15
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Comment prendre en compte les effets de l'environnement sur la qualité des fruits ? A l'échelle de la plante ou du fruit ? National Institute of Agronomic Research
Gauthier, Hélène.
Tipo: Other Palavras-chave: Fruit quality; Ecophysiology; Genetics; Cultural practice; Climate; Qualité du fruit; Écophysiologie; Échelle de l'étude; Pratique culturale; Climat; Génétique.
Ano: 2004 URL: http://hdl.handle.net/2174/319
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Décontamination expérimentale de bivalves toxiques : application aux phycotoxines paralysantes. Rapport final ArchiMer
Lassus, Patrick; Bardouil, Michele; Masselin, Pierre; Naviner, Magali; Truquet, Philippe.
A sea water recirculating flume was especially designed in the framework of this study. It improves physiological and ecophysiological evaluation of a 25 oysters (c. gigas) set fed on PSP toxic A. minutum cultures and then detoxified with commonly used aquaculture species (I. galbana, T. suecica, S. costatum, T. weissflogii). Chlorophyll a levels are kept steady in each case and adjusted in order to reach the same food value in each tank (0,5 mg/l TPM). When exposed to the mildly toxic species A. minutum (0,5 pg.eq.STX.cel-1) oysters depict a reduced clearance rate, food uptake and shell-valves activity (compared to non-toxic algal diets). The same physiological parameters do not show any significant differences when oysters are exposed to the control al...
Tipo: Text Palavras-chave: Épuration; Crassostrea gigas; Alexandrium minutum; PSP; Écophysiologie; Depuration; C. gigas; A. minutum; PSP; Ecophysiology.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/00139/25021/23126.pdf
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Ecophysiological deterministic model for Crassostrea gigas in an estuarine environment ArchiMer
Barille, Laurent; Heral, Maurice; Barilleboyer, Al.
An ecophysiological deterministic model of growth, reproduction and interactions between the bivalve and its estuarine environ ment was established for the Japanese oyster Crassostrea gigas. The environmental variables used in the model are: total particulate matter, particulate organic matter, particulate inorganic matter, chlorophyll, phaeopigments, proteins, lipids and carbohydrates. Rates of clearance, filtration, ingestion, absorption and respiration along with efficiencies of retention, selection and absorption are modelled with endogenous (dry weight of the animal, energy allocation between growth and reproduction) and exogenous variables (temperature, food quality and quantity). The model simulate the temporal evolution of two compartments: somatic...
Tipo: Text Palavras-chave: Crassoslrea gigas; Croissance; Écophysiologie; Modélisation; Turbidité; Crassostrea gigas; Ecophysiology; Growth; Modelling; Turbidity.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/00038/14892/12219.pdf
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Ecophysiologie de la Qualité des Fruits (équipe EQF) National Institute of Agronomic Research
Génard, Michel; Bertin, Nadia; Borel, Charlotte; Bussières, Philippe; Dumas, Yvon; Gautier, Hélène.
Élaboration de la qualité du fruit. Modélisation de la qualité du fruit Modèles et génétique: Variables de qualité et paramètres génétiques; Quels paramètres pour rendre compte du contrôle génétique sur les variables de qualité ?
Tipo: Working Paper Palavras-chave: Ecophysiology; Organoleptic quality; Plant physiology; Modeling; Fruit tree; Genotype; Écophysiologie; Qualité organoleptique; Physiologie végétale; Modélisation; Arbre fruitier; Génotype.
Ano: 2004 URL: http://hdl.handle.net/2174/76
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Écophysiologie des dinoflagellés du genre Azadinium, production toxinique et transfert trophique vers les mollusques bivalves ArchiMer
Jauffrais, Thierry.
This study has been conducted in order to develop the analysis of AZAs and to produce AZAs from A. spinosum culture. It also aimed at studying the effect of environmental and nutritional factors on growth and toxin production. The study also demonstrated a link between A. spinosum and the accumulation of AZAs in shellfish, followed by the clarification of the processes of accumulation, detoxification and biotransformation of AZAs into mussels. A quantitative analysis of AZAs in A. spinosum cultures was developed, and the formation and structure of the AZA methylated analogues was explained and minimised. This work also demonstrated the feasibility of a sustainable production of AZAs from A. spinosum culture and highlighted the main factors influencing...
Tipo: Text Palavras-chave: Azadinium spinosum; Mytilus edulis; Azaspiracides; Phycotoxines; Dinoflagellés; Écophysiologie; CL-SM/SM; Azadinium spinosum; Mytilus edulis; Azaspiracids; Phycotoxins; Dinoflagellate; Ecophysiology; LC-MS/MS.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00111/22217/19891.pdf
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Ecophysiologie - Modélisation – Génétique. Quel dialogue possible pour le contrôle de la qualité ? National Institute of Agronomic Research
Bertin, Nadia.
Tipo: Other Palavras-chave: Fruit quality; Ecophysiologie; Modelisation; Genetics; Size; Weight; Quality control; Fruit; Qualité du fruit; Écophysiologie; Modélisation; Génétique; Taille; Poids; Contrôle de la qualité; Fruit.
Ano: 2004 URL: http://hdl.handle.net/2174/320
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Etude de la variabilité spatio-temporelle des caractéristiques physiologiques des jeunes stades de vie de la seiche Sepia officinalis L. en Manche. ArchiMer
Safi, Georges.
The common cuttlefish Sepia officinalis, is a major exploited marine resource in the English Channel. It has strong seasonal and interannual variations in recruitment. Mechanisms affecting the renewal of the stock by the arrival of new “recruits” and their number need to be better understood. Thus the study of the spatial and temporal variability of “pre-recruits” physiological characteristics was conducted in four spawning sites of the Channel [i.e. Agon Coutainville (FR), Baie de Seine (FR), Selsey (UK) and Torbay (UK)]. The studied parameters were the eggs quality and hatching rate then, the digestive and immune performance of juveniles in relation to local environmental conditions. English eggs have a delayed hatching time and higher hatching rate when...
Tipo: Text Palavras-chave: Seiche; Recrutement (biologie); Oeufs--incubation; Enzymes digestives; Protéases; Lysozyme; Écophysiologie; Manche (mer).; Cuttelfish; Recruitment (Population biology); Eggs--incubation; Digestive enzymes; Proteinase; Lysozyme; Ecophysiology; English Channel.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00161/27232/25439.pdf
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Etude des processus hydrodynamiques et écophysiologiques de la dynamique d'une algue invasive : Valonia aegagropila (C. Agardh) dans la lagune de Salses-Leucate ArchiMer
Cesmat, Ludovic.
Since 1980, the expansion of a green macro-alga: Valonia aegagropila (C Agardh) is observed in Salses-Leucate lagoon (France). It is currently distributed in the north of the lagoon with important biomasses (40 gDW/m²) eroding the cover of Zostera noltii. The free form of the alga can be transported with the surface or bottom currents depending on seasons. It multiplies mainly by vegetative reproduction. There are few studies on the ecophysiological capacities of V. aegagropila. This work tries to answer why (physiological adaptation) and how (mechanical process of transport) the alga invaded the lagoon, with an approach including observations, experiments in controlled environment and biological and hydrodynamic models. The growth capacities depend on...
Tipo: Text Palavras-chave: Model of alga growth; Invasive alga; Model of Droop; Intern quota model; Hydrodynamic model; Invasive specie; Écophysiology; Population dynamic; Lagoon of Salses Leucate; Green alga; Valonia aegagropila; Modèle à quota interne; Modèle hydrodynamique; Espèce invasive; Écophysiologie; Algue verte; Dynamique des populations; Lagune de Salses Leucate; Valonia aegagropila.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/these-2453.pdf
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Physiological responses of Macoma balthica to copper pollution in the Baltic ArchiMer
Sokolowski, A; Wolowicz, M; Hummel, H; Bogaards, R.
Physiological and behavioral responses to Cu exposure were measured in the Baltic clam Macoma balthica from the Gulf of Gdansk, southern Baltic Sea. The burrowing activity, mortality rate, glycogen content, condition index and free amino acid (FAA) composition were analysed as indicators of stress in a series of field and laboratory studies. M. balthica exposed to Cu showed clear Cu-concentration related differences in burrowing activity and mortality rate, but no consistent differences in the condition index, glycogen content, and free amino acids. The clams from a less polluted area reacted more strongly and were more sensitive to additional stress as compared to organisms from a more polluted region. The effect of Cu on the ecophysiology of Baltic clams...
Tipo: Text Palavras-chave: Stress; Cuivre; Écophysiologie; Macoma balthica; Mer Baltique; Stress; Copper; Ecophysiology; Macoma balthica; Baltic Sea.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/00325/43606/43925.pdf
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Plantes et Systèmes de cultures horticoles. Equipe "écophysiologie de la qualité des fruits charnus" National Institute of Agronomic Research
Borel, Charlotte.
Tipo: Other Palavras-chave: Ecophysiology; Fruit quality; Prunus persica; Peach; Écophysiologie; Qualité du fruit; Fruit charnu; Pêche; Prunus persica; Modélisation.
Ano: 2004 URL: http://hdl.handle.net/2174/318
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Présentation de l'équipe d'Agrophysiologie des Plantes Annuelles Cultivées National Institute of Agronomic Research
Triboï, Eugène.
Les travaux de l'équipe concernent le déterminisme environnemental et génétique de la composition en protéines du grain chez les plantes annuelles cultivées et plus particulièrement chez le blé.
Tipo: Working paper Palavras-chave: Weat; Ecophysiology; Blé; Écophysiologie; Teneur protéique; Productivité.
Ano: 2005 URL: http://hdl.handle.net/2174/83
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Présentation des activités de l'équipe Ecophysiologie et Agronomie Viticole National Institute of Agronomic Research
Gaudillère, Jean-Pierre.
Ecophysiologie de la vigne et de la qualité des raisins, connaissance de l’état de la vigne, écologie du vignoble, viticulture durable, maturation du raisin.
Tipo: Working Paper Palavras-chave: Agriculture durable; Qualité organoleptique; Vigne; Vin; Analyse sensorielle; Écophysiologie; Relation hôte-parasite; Relation plante-microorganisme; Biochimie; Oenologie.
Ano: 2005 URL: http://hdl.handle.net/2174/82
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Réponses écophysiologiques des espèces toxiques de Pseudo-nitzschia aux variations environnementales liées au changement climatique ArchiMer
Ayache, Nour.
The diatom Pseudo-nitzschia includes certain toxic species capable of producing domoic acid (DA), an amnesic neurotoxin. The proliferation of these toxic species presents many risks ranging from serious ecological and economic damage to threats to public health. Problems related to these proliferations are increasing worldwide and the need for scientist to better understand the environmental factors influencing the appearance of these blooms is more necessary than ever. In this context, several species and strains of Pseudo-nitzschia have been studied to better understand and predict their physiological responses to future climate change. In particular, the experiments carried out allowed to explore the impact of salinity variations and ocean acidification...
Tipo: Text Palavras-chave: Acide domoïque; Changement climatique; Écophysiologie; Pseudo-nitzschia; Amnesic shellfish poisoning; Climate change; Domoic acid; Ecophysiology; Pseudo-nitzschia.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00478/58969/61573.pdf
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Ressources génétiques et phylogéographie des huîtres creuses Crassostrea gigas et C. angulata : variabilité, différenciation et adaptation des populations naturelles et introduites ArchiMer
Huvet, Arnaud.
L 'huître creuse japonaise Crassostrea gigas et portugaise C. angulata ont été respectivement décrites par Thunberg (1793) et Lamarck (1819). Mais les similitudes morphologiques et l 'homogénéité des fréquences allozymiques entre populations ont conduit de nombreux auteurs à proposer l'existence d'une seule et mênle espèce. L'analyse récente d'un gène mitochondrial a pennis de déterminer l'origine asiatique de C. angulata, soulignant l'intérêt de l'étude de la différenciation génétique et phénotypique entre les deux taxons. La notion biologique d'espèce a tout d'abord été examinée. Des croisements de 1ère et 2ème génération ont montré la viabilité et fertilité des hybrides. L'analyse de la compétition spennatique par marqueurs microsatellites ne montre pas...
Tipo: Text Palavras-chave: Génétique des populations; Crassostrea; Isolement reproducteur; Marqueurs moléculaires; Écophysiologie; Aquaculture.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/00034/14564/11867.pdf
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S'acclimater à des salinités et températures changeantes : un focus sur la branchie chez le loup européen Dicentrarchus labrax ArchiMer
Masroor, Waliullah.
The European sea bass Dicentrarchus labrax undertakes seasonal migrations to estuaries and lagoons that are characterized by fluctuations in environmental conditions. It is unclear to what extent salinity acclimation mechanisms are affected at temperatures higher than in the sea, as usually encountered in transitional waters in spring and summer. In this study, juvenile sea bass were pre-acclimated to seawater (SW) at 18 °C (temperate) or 24 °C (warm) for two weeks and then transferred to either fresh water (FW) or SW at the considered temperatures. We have shown that sea bass are able to efficiently maintain blood osmolality at 24 °C at both salinities. However, temperature increase induced significant changes regarding several physiological traits...
Tipo: Text Palavras-chave: Salinité; Poisson téléostéen; Écophysiologie; Branchies; Transport ionique; Salinity; Ecophysiology; Teleost fish; Temperature; Gills; Ion transport.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00500/61175/64661.pdf
Registros recuperados: 15
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