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Registros recuperados: 85
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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 single bio-energetics growth and reproduction model for the oyster Crassostrea gigas in six Atlantic ecosystems ArchiMer
Alunno-bruscia, Marianne; Bourles, Yves; Maurer, Daniele; Robert, Stephane; Mazurie, Joseph; Gangnery, Aline; Goulletquer, Philippe; Pouvreau, Stephane.
Many studies based on bioenergetics growth models have investigated the effects of environmental factors on oyster (Crassostrea gigas) growth and physiology. However, most of these models are site-specific and cannot be applied to other culture sites without the re-estimation of parameters or re-formulation of some processes. We aimed to develop a generic growth model suitable for application in contrasting environments, with a constant set of parameters. We tested the oyster-DEB model (Bourlès et al. 2009) for the stimulation of C. gigas growth in different cohorts (spats and adults) at major shellfish culture sites in France, in several years: Arcachon (1993–1994); Marennes-Oléron (2007); Quiberon (1999, 2000, 2001); Rade de Brest (2008); Baie du...
Tipo: Text Palavras-chave: DEB theory; Modelling; Bivalves; Crassostrea gigas; Phytoplankton; Temperature effect; Coastal environment..
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00043/15403/12762.pdf
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Alimentation et croissance de bivalves filtreurs en bassin aménagé ArchiMer
Riva, A.; Lelong, P..
The lagoon of Brusc located on the Mediterranean coast (Var­France) is subjected to climatic and hydrologic particular condi­tions. The low values observed for nutrient into the sea water affect the evolution of phytoplankton. Thus chlorophyll concen­tration measured in the lagoon give an annual average of 0.42 mg. m-3 . The growth of two bivalves species : Cerastoderma glaucum and Venerupis semidecussata was compared between two stations where one population of each species are implanted. The culture of this molluscs is made in the lagoon and in outdoor pound dug on the old salt-pan near at hand. In the pound, subjected to natural climatic conditions, a great growth is noted for this two species. The growth rate appear better than the populations of the...
Tipo: Text Palavras-chave: Lagune méditerranéenne; Production primaire; Bivalves; Croissance; Mediterranean Lagoon; Primary production; Bivalves; Growth.
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00306/41674/40883.pdf
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Ancient clam gardens, traditional management portfolios, and the resilience of coupled human-ocean systems Ecology and Society
Jackley, Julia; Department of Archaeology, Simon Fraser University; jaj8@sfu.ca; Gardner, Lindsay; School of Resource and Environmental Management, Simon Fraser University; gardner@sfu.ca; Djunaedi, Audrey F.; School of Resource and Environmental Management, Simon Fraser University; adjunaed@sfu.ca; Salomon, Anne K.; School of Resource and Environmental Management, Simon Fraser University; anne.salomon@sfu.ca.
Indigenous communities have actively managed their environments for millennia using a diversity of resource use and conservation strategies. Clam gardens, ancient rock-walled intertidal beach terraces, represent one example of an early mariculture technology that may have been used to improve food security and confer resilience to coupled human-ocean systems. We surveyed a coastal landscape for evidence of past resource use and management to gain insight into ancient resource stewardship practices on the central coast of British Columbia, Canada. We found that clam gardens are embedded within a diverse portfolio of resource use and management strategies and were likely one component of a larger, complex resource management system. We compared clam...
Tipo: Peer-Reviewed Reports Palavras-chave: Ancient shellfish mariculture; Bivalves; Clam gardens; Management portfolio; Resilience; Resource management; Traditional marine management.
Ano: 2016
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Approches bibliographique et expérimentale de méthodes permettant d'évaluer l'état de maturité sexuelle des bivalves ArchiMer
Thielley, Maryse.
A l'heure actuelle, l'objectif des éc10series d'huîtres est d'atteindre une autonomie d'approvisionnement en larves quelle que soit la saison et donc d'étaler les émissions de gamètes sur toute l'année. A la suite de problèmes rencontrés pour atteindre cet objectif, il s'est avéré nécessaire d'entreprendre des études sur les méthodes à mettre en oeuvre pour contrôler la qualité de la reproduction en écloserie et notamment l'état de maturité des géniteurs. Notre étude porte sur ce dernier point. Une étude bibliographique présente les différentes méthodes plus ou moins précises, actuellement utilisées pour contrôler l'état de maturité des gonades de bivalves. La majorité d'entre elles nécessite le sacrifice d'animaux. Une approche expérimentale portant...
Tipo: Text Palavras-chave: Crassostrea gigas; Bivalves; Reproduction; Maturité sexuelle; Biopsie.
Ano: 1995 URL: http://archimer.ifremer.fr/doc/00419/53094/54051.pdf
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Bactéries pathogènes indigènes des eaux estuariennes: cas des vibrios. Revue bibliographique ArchiMer
Fouche, Dominique.
De nombreuses bactéries, peuplant habituellement les zones estuariennes, se révèlent être de plus en plus fréquemment des agents de maladies dont les vecteurs principaux sont les coquillages et leur consommation par l'homme. Le présent travail synthétise l'état des connaissances sur les vibrios, en particulier Vibrio cholerae, Vibrio parahaemolyticus et Vibrio vulnificus, bactéries pour lesquelles il existe une  abondante littérature. L'écologie, le pouvoir pathogène et les milieux de culture les plus couramment utilisés en vue de leur détection sont présentés. Enfin, leur interaction avec les mollusques bivalves, leur survie dans ceux-ci et le problème de l'épuration conséquente de ces derniers sont abordés.
Tipo: Text Palavras-chave: Vibrio cholerae; Vibrio parahaemolyticus; Vibrio vulnificus; Bactéries indigènes; Estuaires; Bivalves; Purification.
Ano: 1993 URL: http://archimer.ifremer.fr/doc/00408/51929/52554.pdf
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Biodiversity and distribution of bivalves on the Aquitain coast (Bay of Biscay, France) ArchiMer
De Casamajor, Marie-noelle; Caill-milly, Nathalie; Morandeau, Gilles; Lissardy, Muriel.
Tipo: Text Palavras-chave: Bivalves; Bathymetric distribution; Sedimentation; Exploitation; Aquitaine.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00066/17727/15235.pdf
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Bivalve genomics ArchiMer
Saavedra, Carlos; Bachere, Evelyne.
Interest in bivalve genomics has emerged during the last decade, owing to the importance of these organisms in aquaculture and fisheries and to their role in marine environmental science. Knowledge of bivalve genome structure, function and evolution resulting from 20th century "single gene" approaches is limited, but genomic technologies are called to dramatically increase it. Research based on linkage maps, transcriptomics and proteomics is being carried out to study the genetic and molecular bases of traits of interest in bivalve farming industry, mainly disease susceptibility, tolerance to environmental stress, and growth. The Pacific oyster (Crassostrea gigas) is now the focus of an international genome-sequencing consortium. The use of bivalves in...
Tipo: Text Palavras-chave: Shellfish toxins; Feeding; Stress; Proteomics; Genomics; Bivalves.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-1709.pdf
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BMAA et cyanotoxines : microalgues productrices et niveaux d’accumulation dans les organismes marins ArchiMer
Reveillon, Damien.
BMAA (â-N-methylamino-L-alanine) is a non proteinogenic neurotoxic amino acid that has been associated with amyotrophic lateral sclerosis. Its analytical detection is widely debated thus the global production of BMAA by cyanobacteria is questioned. We first aimed at developing an analytical method allowing for highly selective identification of BMAA and isomers, using HILIC chromatography coupled to mass spectrometry. Then, we have cultivated and analyzed more than 50 microalgae (e.g. cyanobacteria, diatoms). Unlike DAB, one of its natural isomer, BMAA was only reported in five diatom species and cannot be accounted as a cyanotoxin anymore. In parallel, we have evaluated the presence of BMAA on the three French coasts. The presence of BMAA in different...
Tipo: Text Palavras-chave: DAB; Cyanotoxines; CL-SM/SM; Diatomées; Cyanobactéries; Bivalves; BMAA; DAB; Cyanotoxins; LC-MS/MS; Diatoms; Cyanobacteria; Bivalves.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00295/40651/39617.pdf
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Changes in biochemical and hemocyte parameters of the pacific oysters Crassostrea gigas fed T-Iso supplemented with lipid emulsions rich in eicosapentaenoic acid ArchiMer
Delaporte, Maryse; Chu, Fu-lin; Langdon, Chris; Moal, Jeanne; Lambert, Christophe; Samain, Jean-francois; Soudant, Philippe.
The aim of this study was to assess the effect of dietary eicosapentaenoic acid (20:5n-3) on hemocyte parameters such as hemocyte concentration, phagocytosis, and non-stimulated reactive oxygen species (ROS) production in Pacific oysters Crassostrea gigas, as well on proximate biochemical and fatty acid compositions. One-year-old oysters (C. gigas) were fed T-Isochrysis aff. galbana(T-Iso), which is low in 20:5n-3, either alone or with supplements of a lipid emulsion rich in 20:5n-3 at 1%, 10% or 50% (dry weight of the algal ration) for up to 7 weeks. Changes in gill fatty acid composition demonstrated that the lipid emulsion was well ingested by oysters during the dietary conditioning. Biochemical analysis indicated that oysters fed supplements of 50%...
Tipo: Text Palavras-chave: Polyunsaturated fatty acids; Immunology; Hemocytes; Eicosapentaenoic acid 20 : 5n 3; Crassostrea gigas; Bivalves.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-2604.pdf
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Compte-rendu d'activité 1990 de l'Unité de Recherche Régionale Aquacole (URRA) La Tremblade ArchiMer
Bodoy, Alain.
Rapport d'activité 1990 de l'Unité de Recherche Régionale Aquacole (URRA) La Tremblade
Tipo: Text Palavras-chave: Conchyliculture; Télécaptage; Gestion élevage; Biologie; Physiologie; Bivalves; Rapport activité.
Ano: 1990 URL: http://archimer.ifremer.fr/doc/00072/18284/15854.pdf
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Compte-rendu des résultats d'analyses effectuées en histologie - Année 1995 ArchiMer
Renault, Tristan; Cochennec, Nathalie; Chollet, Bruno.
Dans le cadre du Réseau zoosanitaires CEE (huître plate) et suivi d'autres espèces, 890 individus provenant des zones 5, 6 et 7 ont été examinés sur l'ensemble de l'année 1995 par différentes techniques : 472 analyses sous coupes histologiques, 328 analyses sur appositions d'organes, 90 analyses sur milieu au thioglycolate.
Tipo: Text Palavras-chave: Pathologie; Analyse; Histologie; Technique; Bivalves; Ostrea edulis; Huître plate; Mytilus edulis; Ruditapes philippinarum; Ruditapes decussatus; Cerastoderma edule; Mortalité.
Ano: 1995 URL: http://archimer.ifremer.fr/doc/00044/15504/12877.pdf
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Contribution to the understanding of the cycle of the protozoan parasite Marteilia refringens ArchiMer
Arzul, Isabelle; Chollet, Bruno; Boyer, S.; Bonnet, D.; Gaillard, Juliette; Baldi, Yoann; Robert, Maeva; Joly, Jean-pierre; Garcia, Celine; Bouchoucha, Marc.
The paramyxean parasite Marteilia refringens infects several bivalve species including European flat oysters Ostrea edulis and Mediterranean mussels Mytilus galloprovincialis. Sequence polymorphism allowed definition of three parasite types ‘M’, ‘O’ and ‘C’ preferably detected in oysters, mussels and cockles respectively.Transmission of the infection from infected bivalves to copepods Paracartia grani could be experimentally achieved but assays fromcopepods to bivalves failed. In order to contribute to the elucidation of the M. refringens life cycle, the dynamics of the infection was investigated in O. edulis, M. galloprovincialis and zooplankton over one year in Diana lagoon, Corsica (France). Flat oysters appeared non-infected while mussels were infected...
Tipo: Text Palavras-chave: Bivalves; Marteilia refringens; Copepods; Paracartia latisetosa; Zooplankton; Parasite life cycle.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00165/27635/25768.pdf
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Contrôle de la ponte ovulaire chez l'huître creuse Crassostrea gigas : utilisation du modèle Sepia officinalis pour la caractérisation de peptides régulateurs ArchiMer
Bernay, Benoît.
Despite the fact that the involvement of environmental factors in the physiology of the japanese oyster C. gigas is fully described, regulatory peptides are not known. In this study, we focused on peptidergic control of egg-laying. In order to characterize peptides involved in the regulation of egg-laying in C. gigas, the cuttlefish S. officinalis was used as a model. Firstly, regulatory peptides were investigated in the cuttlefish by peptidomic analysis. This approach led to the identification of eleven new ovarian regulatory peptides. Based on conserved tags, these peptides have been classified into two families: the SepCRPs (Sepia Capsule Releasing Peptides) and the OJPs (Ovarian Jelly Peptides). Released by oocytes into the genital coelom, they are...
Tipo: Text Palavras-chave: Ostréiculture; Ovaire; Spectrométrie de masse; Peptides; Céphalopodes; Bivalves; Mollusques.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/these-2566.pdf
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Croissance de jeunes palourdes (Venerupis semidecussata) en nurserie et en mer en fonction des conditions d'élevage ArchiMer
Lucas, Albert.
The japanese palourde Venerupis semidecussata was reared in the Bay of Brest, using hatchery reared spat. Experiments were performed with individuals of lenght 2 to 10 mm raised in a nursery, using raceways with slow running water enriched with unicellular algae, And also with individuals of lenght 8 to 20 mm raised at sea in suspended culture. It was observed that growth depends upon four groups of factors : (1) the functioning and equipment of the raceways, (2) the quantity and quality of the food, (3) the temperature and (4) various physico-chemical factors. When the equipment is satisfactory and when the physico-chemical fac­tors are normal for the species in question, the rate of growth depends essen­tially on the quantity of food, provided that the...
Tipo: Text Palavras-chave: Palourde; Venerupis; Bivalves; Croissance; Nourriture; Température; Nurserie; Culture suspendue; Aquaculture; Clam; Venerupis; Bivalves; Growth; Food; Temperature; Nursery; Suspended culture; Aquaculture.
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00305/41657/40866.pdf
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Cs-137 baseline levels in the Mediterranean and Black Sea: A cross-basin survey of the CIESM Mediterranean Mussel Watch programme ArchiMer
Thebault, Herve; Baena, A; Andral, Bruno; Barisic, D; Albaladejo, J; Bologa, A; Boudjenoun, R; Delfanti, R; Egorov, V; Khoukhi, T; Florou, H; Kniewald, G; Noureddine, A; Patrascu, V; Pham, M; Scarpato, A; Stokozov, N; Topcuoglu, S; Warnau, M.
The common mussel Mytilus galloprovincialis was selected as unique biomonitor species to implement a regional monitoring programme, the CIESM Mediterranean Mussel Watch (MMW), in the Mediterranean and Black Seas. As of today, and upon standardization of the methodological approach, the MMW Network has been able to quantify Cs-137 levels in mussels from 60 coastal stations and to produce the first distribution map of this artificial radionuclide at the scale of the entire Mediterranean and Black Seas. While: measured Cs-137 levels were found to be very low (usually <1 Bq kg(-1) wet wt) Cs-137 activity concentrations in the Black Sea and North Aegean Sea were up to two orders of magnitude higher than those in the western Mediterranean Basin. Such effects,...
Tipo: Text Palavras-chave: Black Sea; Mediterranean; Mussel watch; Monitoring; Radionuclides; Bivalves.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-4477.pdf
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Cultures et élevages de masse dans le contexte d'une écloserie-nurserie de mollusques bivalves : les productions phytoplanctoniques et le grossissement des post-larves ArchiMer
Le Borgne, Y.; Marin, J.; Vergonzanne, G..
The hatchery-nursery from the Société Atlantique de Mariculture settled in Barfleur studied within the ECOTRON program set up by C.N.E.X.O. the characteristics of mass cultures for monospecific phytoplancton and of the rearing of oyster spat (Ostrea edulis. Crassostrea giqas) and clam spat (Venerupis semi­decussata) . The maintenance features of the cultures in order to obtain cell densities around 1 million cell/ml. (or 50 g. of dry weight/m3) in containers up to 5000 liters have been established for the main species used in aquaculture (Isochrysis qalbana. Monochrysis lutheri, Tetraselmis suecica. Skeletonema costatum. Phaeodactylum tricornutum. Cyclotella nana, Chaetoceros calcitrans). The spat growth in nursery without providing any cultured food...
Tipo: Text Palavras-chave: Écloserie; Nurserie; Phytoplancton; Bivalves; Naissain; Hatchery; Nursery; Phytoplancton; Bivalves; Spat.
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00305/41658/40867.pdf
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Diagnosis of oyster herpes-like virus: development and validation of molecular, immunological and cellular tools "VINO" - First Periodic Progress Report 4th January 1999 to 3rd January 2000 ArchiMer
Renault, Tristan; Davison, Andrew; Xhonneux, Florence; Dorange, Germaine; Culloty, Sarah; Novoa, Beatriz; Dixon, Peter.
The aim of the programme is to develop specific tools for diagnosing herpes-like virus infections in bivalves and to validate these reagents by using them in different European laboratories involved in shellfish epidemiological surveys. This will done using techniques developed by the partners to characterise viruses by studying their genomes and immunologically reactive proteins, to cultivate oyster cells and vertebrate cell lines and to perform epidemiological surveys among bivalves. The programme objectives are: 1 - Obtaining the complete oyster herpes-like virus DNA sequence with determination of the genome structure. 2 - Comparing oyster herpes-like viruses with other viruses belonging to the Helpesviridae family on the basis of sequence data and...
Tipo: Text Palavras-chave: Pathology; Diagnosis; Oyster; Herpes like virus; Herpesviridae; Immunology; Detection; Virus; Bivalves.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/00044/15523/12910.pdf
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Disjoint geographical distribution of intertidal and nearshore benthic invertebrates in the Southern Hemisphere RChHN
CASTILLA,JUAN C; GUIÑEZ,RICARDO.
Biogeographical explanations for the extant and paleo disjoint geographical distribution in the southern hemisphere of five species of nearshore marine benthic invertebrates: Gaimardia trapesina, Ostrea chilensis, Pyura stolonifera taxonomic complex, Aulacomya ater and Concholepas concholepas, showing distinctive reproductive strategies and early life history characteristics are reviewed and analyzed. Through the use of published and new information we contrasted the following hypotheses: a) vicariance-historical process, b) epiplanktonic larval dispersal, c) juvenile/adult dispersal through rafting and d) planned or accidental anthropogenic dispersal mechanisms. The juvenile/adult transoceanic dispersal hypothesis by rafting was the only one impossible to...
Tipo: Journal article Palavras-chave: Paleobiogeography; Vicariance; Larval dispersal; Rafting; Anthropogenic dispersal; Bivalves; Gastropods; Tunicates; Invertebrates; Nearshore; Southern hemisphere.
Ano: 2000 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000400004
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Ecotron Embiez - I. Présentation du programme. Conditions de production de phytoplancton et son utilisation par des bivalves filtreurs dans les salines de l'île des Embiez (Var-France) ArchiMer
Vicente, N..
After some testing of Bivalves planting in a tank fitted up inside the saltemes of the Embiez island (Var-France) in 1975, a planctonstat has been rea­lized on the ground inside a beton tank where the evolution of phytoplancton has been studied.
Tipo: Text Palavras-chave: Production primaire; Bivalves; Salines; Primary production; Bivalves; Salines.
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00305/41665/40874.pdf
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