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Registros recuperados: 62
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A comparative ecophysiological study of two infaunal filter-feeding bivalves: Paphia rhomboides and Glycymeris glycymeris ArchiMer
Savina, Marie; Pouvreau, Stephane.
A comparative ecophysiological study was carried out in September and November 2002 for two bivalves, Paphia rhomboides and Glycymeris glycymeris, which are significantly harvested in the Western Channel (French coast). Individual measurements of clearance and respiration rates were performed for both species, in several experimental conditions of temperature and phytoplankton concentrations. Those conditions were chosen to be in the range of those commonly observed in the subtidal area of the Western Channel. The mean value of clearance rate and oxygen consumption obtained from continuous data recording did not reveal any significant influence of temperature in the investigated range, but a significant difference between P rhomboides and G. glycymeris....
Tipo: Text Palavras-chave: Filter feeding; Bivalves; Glycymeris glycymeris; Paphia rhomboides; Scope for growth; Ecophysiology.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/publication-379.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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A flow-through rearing system for ecophysiological studies of Pacific oyster Crassostrea gigas larvae ArchiMer
Rico Villa, Benjamin; Woerther, Patrice; Mingant, Christian; Le Piver, David; Pouvreau, Stephane; Hamon, Michel; Robert, Rene.
While literature is relatively abundant on adult shellfish, ecophysiological studies at the larval stage are scarce because of both technical difficulties and inadequate methodology. A tool dedicated to provide basic information for larval ecophysiology was accordingly developed. Two steps were followed: first a flow-through method of Crassostrea gigas larval culture was perfected during a set of experiments in which rearing systems and larval density were assessed. Then a continuous hydrobiological data recorder was adapted with modifications to comply with our experimental aim. SILO (Système d'Instrumentation des Larves en flux Ouvert) allowed the successive acquisition of hydrobiological parameters in ten 150 l larval tanks in which larvae were reared...
Tipo: Text Palavras-chave: Temperature; Ecophysiology; Bivalve larvae; Crassostrea gigas; Flow through.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-4167.pdf
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Application of a dynamic energy budget model to the Pacific oyster, Crassostrea gigas, reared under various environmental conditions ArchiMer
Pouvreau, Stephane; Bourles, Yves; Lefebvre, Sebastien; Gangnery, Aline; Alunno-bruscia, Marianne.
The Dynamic Energy Budget (DEB) model (Kooijman, S.A.L.M., 1986. Energy budgets can explain body size relations. J. Theor. Biol. 121, 269¿282; Kooijman, S.A.L.M., 2000. Dynamic Energy and Mass Budgets in Biological Systems. Cambridge University Press, Cambridge, 424 pp.) has been adapted to describe the dynamics of growth and reproduction of the Pacific oyster (Crassostrea gigas) reared in different areas under conditions ranging from controlled to natural. The values of the model parameters were estimated from available physiological data and from published information. The sets of data used to validate the model came from three long-term growth experiments (> 5 months) performed on Pacific oysters reared under different conditions of food and...
Tipo: Text Palavras-chave: Reproductive effort; Reproduction; Growth; Ecophysiology; Dynamic energy budget; Crassostrea gigas.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-1817.pdf
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Approche ecophysiologigue et ultrastructurale de l'osmoregulation chez les crustaces decapodes ArchiMer
Pequeux, A; Lignon, J.
This paper deals mostly with recent physiological data on ion transport across the gill tissue and an attempt is made to correlate them with blood osmoregulation and ecological distribution in euryhaline decapods. A particular attention is paid to the gills of the fully euryhaline Chinese crab Eriocheir sinensis . Supporting this ecophysiological approach, there is an important ultrastructural analysis of the gill epithelium under various salinity conditions. The possible part played by the cuticle in ions movements is also considered.
Tipo: Text Palavras-chave: Eriocheir sinensis; Cancer pagurus; Maia squinado; Carcinus maenas; Decapoda; Malacostraca; Ion transport; Gills; Ecophysiology; Cuticles; Ultrastructure; Salinity tolerance.
Ano: 1987 URL: http://archimer.ifremer.fr/doc/1987/acte-1387.pdf
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Aspectos ecofisiológicos da pimenta-do-reino sob diversos tutores vivos. Repositório Alice
BOTELHO, M. do N.; ROCHA NETO, O. G. da; CONCEIÇÃO, H. E. O. da..
1992
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Pimenta-do-reino; Tutor vivo; Ecofisiologia; Black pepper; Ecophysiology.
Ano: 1992 URL: http://www.alice.cnptia.embrapa.br/handle/doc/394303
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Aspectos ecofisioloógicos da pimenta-do-reino sob diversos tutores vivos. Repositório Alice
VIEIRA, A. J. D.; ROCHA NETO, O. G. da; CONCEIÇÃO, H. E. O. da..
1992
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Pimenta-do-reino; Tutor vivo; Ecofisiologia; Black pepper; Ecophysiology.
Ano: 1992 URL: http://www.alice.cnptia.embrapa.br/handle/doc/394302
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Aspects of leaf anatomy of Kudzu (Pueraria lobata, Leguminosae-faboideae) related to water and energy balance. Repositório Alice
PEREIRA-NETTO, A.B. de; GABRIELE, A.C.; PINTO, H.S..
Kudzu is a cover crop that has escaped cultivation in some subtropical and warm temperate regions. Kudzu has previously demonstrated broad intraspecific physiological plasticity while colonizing new environments. The objective of this paper was to investigate characteristics of kudzu leaflet anatomy that might contribute to its successful growth in climatically distinct environments, and to escape cultivation as well. Fresh and fixed leaflet strips of field-grown plants were analyzed. The lower epidermis of kudzu showed a higher frequency of stomata (147 +- 19 stomata mm-2) than the upper epidermis (26 +- 17 stomata mm-2). The average number of trichomes per square milimeter was 8 for both the upper and the lower epidermis. The average trichome length was...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Cuticle thickness; Ecophysiology; Leaflet anatomy; Stomata; Trichomes; Anatomia de foliolos; Tricomas; Ecofisiologia; Espessura de cuticula; Estomatos.
Ano: 1999 URL: http://www.alice.cnptia.embrapa.br/handle/doc/100687
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Aspects of leaf anatomy of tropical kudzu related to water and energy balance. Repositório Alice
NETTO, A. B. de P.; GABRIELE, A. C.; PINTO, H. S..
No Brasil, a pecuaria (Pueraria phaseoloides Benth, Leguminosae-Faboideae) e tradicionalmente empregada como cultura de cobertura em seringais na regiao amazonica, onde as condicoes climaticas se assemelham as condicoes climaticas tropicais encontradas no sudoeste asiatico, centro de dispersao da especie. Pueraria foi tambem introduzida na regiao sudeste do Brasil, regiao esta caracterizada pela transicao entre os climas tropical e subtropical. Este trabalho teve como objetivo descrever algumas caracteristicas da anatomia foliar de pueraria relacionadas a economia de agua e energia. A epiderme inferior apresentou maior frequencia de estomatos (213 estomatos mm2) quando comparada a epiderme superior (101 estomatos mm2). O numero medio de tricomas por...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Espessura da cuticula; Anatomia de foliolos; Tricomas; Ecofisiologia; Estomatos; Cuticle thickness; Ecophysiology; Leaflet anatomy; Stomata; Trichomes.
Ano: 1997 URL: http://www.alice.cnptia.embrapa.br/handle/doc/86250
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Biologie et genetique des populations de crustaces. Strategies mises en jeu, essai de synthese ArchiMer
Gaudy, R; Kerambrun, P.
Population genetics, which analyses the genetic structure of natural populations, has an an objective a better understanding of the mechanisms of support of the polymorphism and of the relations between this one and physical, chemical and trophic conditions of the environment. In this double objective, population genetics meet the biology of populations whose demographic aspects can be disturbed by a decrease of polymorphism (inbreeding) or by changes in ecological conditions.
Tipo: Text Palavras-chave: Crustacea; Biopolymorphism; Animal populations; Ecophysiology; Genetics.
Ano: 1987 URL: http://archimer.ifremer.fr/doc/1987/acte-1394.pdf
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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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Competition for phosphorus between two dinoflagellates: A toxic Alexandrium minutum and a non-toxic Heterocapsa triquetra ArchiMer
Labry, Claire; Erard-le Denn, Evelyne; Chapelle, Annie; Fauchot, Juliette; Youenou, Agnes; Crassous, Marie-pierre; Le Grand, Jacqueline; Lorgeoux, Benedicte.
The understanding of the dominance of one species with respect to others is a pertinent challenge in HAB growth dynamics studies and the nutrient supply mode is one of the factors potentially involved. The competition for phosphorus (P) between a toxic species, Alexandrium minutum, and a non-toxic species, Heterocapsa triquetra, was studied (1) along a gradient of P depletion, (2) testing different P depletion degrees before a single PO4 supply and (3) experimenting different PO4 supply frequencies. In conditions Of PO4 depletion, H. triquetra stopped growing after two days both in monospecific and mixed batch cultures whereas A. minutum grew progressively from day 2 until the end of the experiment. This time-lag growth of A. minutum is associated to its...
Tipo: Text Palavras-chave: Semi continuous culture; Batch culture; Ecophysiology; Pulse; Phosphorus storage; Dinoflagellates; Heterocapsa triquetra; Alexandrium minutum.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-4067.pdf
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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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DEDUCTION : A research project for shrimp farming sustainability in New-Caledonia ArchiMer
Beliaeff, Benoit; Chim, Liet; Della Patrona, Luc; Goyard, Emmanuel; Herlin, Jose; Labreuche, Yannick; Walling, Emilie; Ansquer, Dominique; Brun, Pierre; Castex, Mathieu; Coatanea, Denis; Courties, Claude; De Lorgeril, Julien; Dufour, Robert; Frappier, Julie; Goarant, Cyrille; Huber, Matthias; Lemaire, Pierrette; Lemonnier, Hugues; Loubersac, Lionel; Le Roux, Frederique; Lucas, Ronan; Patrois, Jacques; Peignon, Jean-marie; Pham, Dominique; Ramage, Yannick; Soulard, Benoit; Vic, Marlene; Vourey, Elodie; Wabete, Nelly.
New Caledonian shrimp farming feasibility studies started in the mid-seventies. Today ca. 2000 tons of Litopenaeus stylirostris, introduced in 1978, are semi-intensively produced each year. Since fifteen years, production has been impacted by two seasonal vibriosis, the “Summer” syndrome caused by Vibrio nigripulchritudo in relation to pond bottom and water column quality, and the “Winter Syndrome” caused by Vibrio penaeicida in relation to drastic temperature drops . With the ambition of elucidating processes possibly leading to mortality outbreaks in ponds, Ifremer has been conducting a research program since 2003 under the DESANS project (2003-2006) and the present DEDUCTION project, equally funded by the South and North Provinces and by the Government...
Tipo: Text Palavras-chave: Shrimp farming; Technical and scientific support; Vibriosis; Water quality; Pathology; Ecophysiology; Genetics; Zoosanitary monitoring and procedures; Multifactorial and multidisciplinary approach.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/00143/25438/23591.pdf
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Dendrophysiological plant strategies of Poincianella pyramidalis (Tul.) L.P. Queiroz after wood herbivory in semiarid region of Paraíba - Brazil Biological Sciences
Santana, Otacilio Antunes; Encinas, Jose Imana.
The increase in Equus africanus asinus Linnaeus population in semiarid areas of Northeast Brazil had significant impacts on wild and rural areas. The objective of this work was to analyze the herbivory of E. africanus asinus on Poincianella pyramidalis (Tul). L.P. Queiroz and determine the dendrophysiological strategies P. pyramidalis used during and after damage caused by E. africanus asinus. The selected areas have significant populations of P. pyramidalis with amplified importance value higher than 50%. Two areas were established: one control and another experimental, with presence of E. africanus asinus. The study was carried out from 2001 to 2015. The evaluated variables of P. pyramidalis were: sap flow, basic density, diameter, volume, biomass and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 2.05.03.00-8; 2.03.03.03-3 ecological interactions; Ecophysiology; Survival strategies Ecologia Aplicada; Ecofisiologia Vegetal.
Ano: 2016 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/29089
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Detecção de condições de estresse em plantas e potencial para "screening" em milho através da fluorescência da clorofila. Repositório Alice
DURAES, F. O. M.; OLIVEIRA, A. C.; MAGALHAES, P. C.; MARTINEZ, C.A..
2000
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Milho; Estresse; Ecofisiologia; Screening; Zea mays; Maize; Stress; Ecophysiology.
Ano: 2000 URL: http://www.alice.cnptia.embrapa.br/handle/doc/484141
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Dormancy of 'Imperial Gala' apple and 'Hosui' pear tree buds in a region of low chill occurrence Agronomy
Carvalho, Ruy Inácio Neiva de; Biasi, Luiz Antonio; Zanette, Flávio; Rendoke, José Carlos; Santos, Jean Magnus; Pereira, Gabriely Pinto.
The objective of this work was to evaluate the dormancy dynamic of Imperial Gala apple tree buds and Hosui pear tree buds in a region of low chill occurrence. Experiments were conducted between April and August in 2007 and 2008. Branches were collected every two weeks from an orchard at Porto Amazonas (Paraná State, Brazil). On the last sampling day, an additional set of branches was collected and refrigerated between 4°C and 7°C for 1,440 hours. Dormancy was evaluated using a biological test of single node cuttings isolated in growth chambers (GC) at 25°C with 16 hours of light exposure. The number of chill hours (CH) and chill units (CU) for the region were recorded. The two species were evaluated in separate experiments. We used 11 completely randomized...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 5.01.03.00-8 Malus domestica; Pyrus communis; Ecophysiology; Budburst; Endodormancy Fitotecnia.
Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17966
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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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Ecophysiological studies of four amazonian weedy species: implications for their invasive potential. Repositório Alice
DIAS FILHO, M. B..
This research focused on a comparative study of four important perenial weedy species from pastures and crop areas in eastern Brazilian Amazonia: Ipomoea asarifolia (Desr.) Roem. & Schultz (Convolvulaceae), Stachytarpheta cayennensis (Rich) Vahl. (Verbenaceae), Solanum crinitum Lam. (Solanaceae) and Vismia guianensis (Aubl.) Choisy (Guttiferae). Two major lines of experiments were conducted. The firts investigated some aspects of the seed ecology of the species: longevity in the soil, germination responses to light, nitrate and osmotic stress and the effect of planting depth on seedling emergence. The second line of experiments evaluated the effect of limited soil moisture or of contrasting light environments on physiological and morphological...
Tipo: Tese/dissertação (ALICE) Palavras-chave: Erva daninha; Ecofisiologia; Brasil; Amazônia; Ipanema asarifolia; Stachytarpheta coyenannensis; Solanum crinitum; Vismia guianensis; Weed; Ecophysiology.
Ano: 1994 URL: http://www.alice.cnptia.embrapa.br/handle/doc/402604
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Ecophysiological studies on luminous bacteria associated with marine gastropods. ArchiMer
Ramesh, A; Venugopalan, V.
Information available on the association of luminous bacteria with marine invertebrates is limited. Hence qualitative and quantitative investigations were undertaken with a view to understand the distribution of luminous microflora in relation to the environmental factors and also in the gut of two marine gastropods, Aplysia benedicti Eliot and Bullia tranquebarica (Roding) from Porto Novo (11 degree 29'N, 79 degree 46'E) waters of the East coast of India. The gut of the gastropods harboured maximum number of luminous bacteria when compared to the water and sediment. Qualitative analysis revealed the presence of two luminous bacterial components, viz. Vibrio harveyi and V. fishceri. V. fischeri was not found in association with A. benedicti . The isolates...
Tipo: Text Palavras-chave: Gastropoda; Vibrio fischeri; Vibrio harveyi; Bioluminescence; Bacteria; Physicochemical properties; Environmental factors; Microorganisms; Luminous organisms; Interspecific relationships; Ecophysiology.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-993.pdf
Registros recuperados: 62
Primeira ... 1234 ... Última
 

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