Consulta: subjectFacets:"Molluscs"
Registros recuperados: 54
Data/hora: 04/06/2024 00:48:37

Ocorrência de moluscos exóticos invasores no rio Miranda, bacia do rio Paraguai, MS
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: OLIVEIRA, M. D. de; MANSUR, M. C. D.; BARBOSA, D. S.
Este trabalho descreve a distribuição de espécies de moluscos exóticos invasores na Bacia do Rio Miranda, tributário do rio Paraguai. A Bacia do Rio Miranda, com rios de águas calcáreas e cristalinas, é conhecida pela abundância de moluscos nativos, que podem ser observados por turistas do mundo todo na região de Bonito-MS, sendo essa região considerada o melhor destino de ecoturismo do Brasil. A diversidade de espécies de moluscos pode ser comprovada visualmente, apesar de pouco conhecida, e pode estar ameaçada pela presença de espécies exóticas invasoras, que estão amplamente distribuídas na bacia e já predominam em alguns rios. As espécies do gênero Corbicula (C. fluminea e C. largillierti) foram observadas em 64% das áreas amostradas, em muitos casos...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Molusco; Espécie Nativa; Molluscs; Indigenous species.
Ano: 2017
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1085802

Les maladies des mollusques : étiologie et progrès récents des recherches
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Grizel, Henri.
Recent research in mollusc pathology has enabled different pathogens of the large systematlc groups to be described. The main microorganisms and Protozoans are enumerated showing the economic incidence of the deseases on mollusc production. We also mention recent results obtained in the laborarory for dlfferent purified organisms. Finally, we review advances in cell culture giving an example of the application of these techniques experimental pathogenesis.
Tipo: Text
Palavras-chave: Pathogens; Pathology; Molluscs; Agents pathogènes; Pathologie; Mollusques.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/1987/publication-3105.pdf

Shellfish viruses
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Renault, Tristan.
Mortalities in a number of commercially important mollusc species have been associated with the detection of viruses belonging to several families. The first description of a virus was in adult eastern oyters, Crassostrea virginica, with the detection of virus particles resembling members of the family Herpesviridae. Subsequently, mass mortalities in French stocks of adult Portuguese oysters, C. angulata, were associated with irido-like virus infection. Other viruses observed in molluscs are described as members of the families Iridoviridae, Papovaviridae and Reoviridae. Little information is available on viral infections that affect molluscs due to primarily to the inadequacy of diagnostic methods that are employed when mass mortality events occur. Most...
Tipo: Text
Palavras-chave: Virus; Scallops; Picornavirus; Oyter herpesvirus 1; Oysters; Molluscs; Irido Like virus; Diseases; Herpesvirus; Clams; Bivalves; Birnavirus; Abalones.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4932.pdf

Bilan 2004 du réseau REPAMO - Réseau national de surveillance zoosanitaire des mollusques marins
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Garcia, Celine; Arzul, Isabelle; Chollet, Bruno; Francois, Cyrille; Goubet, Anne; Joly, Jean-pierre; Miossec, Laurence; Robert, Maeva; Cuvelier, Nicolas; Lefebvre, Alain; Le Gagneur, Eric; Ropert, Michel; Mouillard, Gilbert; Gerla, Daniel; Le Gal, Dominique; Rocher, Gregory; Langlade, Aime; Bedier, Edouard; Nourry, Max; Martin, Jean-louis; Costantini, Louis; Masson, Jean-claude; Martin, Anne-genevieve.
Created in 1986, the REPAMO network (Network of mollusc pathology), is a national zoosanitary surveillance network of shellfish health status along the French coasts. Its activities are in keeping with two European Directives, 91 /67/EEC and 95/70/EC and are a patt of the institutional tasks ofIfremer. The aims of the network are to prevent the introduction and spread of exotic pathogens and to survey the evolution of notifiable pathogens already present in France. The network focused on the survey of listed diseases (bonamiosis and marteiliosis of flat oyster) in two areas under agreement process (Banc de Granville and zone X). In 2004, no sample couId be analysed to these two areas because of the difficulty to obtain flat oysters (sparse oyster beds,...
Tipo: Text
Palavras-chave: Réseau; Surveillance; Pathologie; Mollusques; Coquillages; Etat de santé; Network; Surveillance; Pathology; Molluscs; Shellfish; Health status.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/00086/19702/17343.pdf

Lysozyme gene expression and hemocyte behaviour in the Mediterranean mussel, Mytilus galloprovincialis, after injection of various bacteria or temperature stresses
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Li, H; Parisi, M; Toubiana, Mylene; Cammarata, M; Roch, Philippe.
The aim of the present study was to evaluate the expression of the Mytilus galloprovincialis lysozyme gene in different in vivo stress situations, including injection of bacteria Vibrio splendidus LGP32, Vibrio anguillarum or Micrococcus lysodeikticus, as well as heat shock at 30 C and cold stress at 5 C. Injection of V. splendidus LGP32 resulted in: (i) a general down-regulation of lysozyme gene expression, as quantified by Q-PCR; (ii) reduction in the number of circulating hemocytes; (iii) decrease in the percentage of circulating hemocytes expressing lysozyme mRNA which was now restricted to only small cells, as observed by ISH; and (iv) accumulation of hemocytes expressing lysozyme in the muscle sinus where injection took place. Injection of V....
Tipo: Text
Palavras-chave: Molluscs; Mytilus; ISH; Q PCR; Gene expression; Lysozyme; Heat shock; Micrococcus lysodeikticus; Vibrio anguillarum; Vibrio splendidus.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4479.pdf

Les peuplements benthiques du plateau insulaire de la Martinique et des zones bathyales adjacentes. Cas particulier de la malacofaune
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Paulmier, Gerard; Durand, Francoise.
Several oceanographic surveys in Martinique waters with, as main objectives, either geological mapping and evaluating marine aggregate resources of research into deep water carcinologie resources, nafe produced interesting informtion on benthic pppulations situated from the infralittoral to the bathyal shelf, for the wole of faunistic groups and more specifically for the malacofauna. The distribution of the various faunistic group has been analysed in function to the bathymetric, edaphic and possibly, thermic factors. The infralittoral zones, up to the 20 metres isobath, and circalittoral, between 60  and 80 metres, are known to have the richest populations. Corals, sponges, polychaete annelida and molluscs are the best represented, numerically as well as...
Tipo: Text
Palavras-chave: Ecologie; Sédimentologie; Bathymétrie; Peuplements; Benthos; Invertebrés; Communautés; Bivalves; Gastéropodes; Ecology; Sedimentology; Bathymetry; Settelment; Benthos; Invertebrates; Molluscs; Communities; Bivalvia; Gastropoda.
Ano: 1997
URL: https://archimer.ifremer.fr/doc/00480/59191/61880.pdf

Viruses infecting marine molluscs
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Arzul, Isabelle; Corbeil, Serge; Morga, Benjamin; Renault, Tristan.
Although a wide range of viruses have been reported in marine molluscs, most of these reports rely on ultrastructural examination and few of these viruses have been fully characterized. The lack of marine mollusc cell lines restricts virus isolation capacities and subsequent characterization works. Our current knowledge is mostly restricted to viruses affecting farmed species such as oysters Crassostrea gigas, abalone Haliotis diversicolor supertexta or the scallop Chlamys farreri. Molecular approaches which are needed to identify virus affiliation have been carried out for a small number of viruses, most of them belonging to the Herpesviridae and birnaviridae families. These last years, the use of New Generation Sequencing approach has allowed increasing...
Tipo: Text
Palavras-chave: Molluscs; Viruses; Diseases; Herpesviridae; Bivalve; Abalone.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00371/48206/48319.pdf

Development and validation of DNA-based diagnostic techniques with particular reference to bivalve mollusc pathogens
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Berthe, Franck.
The International Aquatic Animal Health Code of the OIE (the World Organization for Animal Health) includes serious pathogens that have been causing important losses in the mollusc aquaculture industry throughout the world. This list also meets the ones established by the European Union regulation.
Tipo: Text
Palavras-chave: Pathogens; Techniques; Diagnostics; Pathology; Molluscs.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/1999/acte-3213.pdf

Contrasted survival under field or controlled conditions displays associations between mRNA levels of candidate genes and response to OsHV-1 infection in the Pacific oyster Crassostrea gigas
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Normand, Julien; Li, Ronghua; Quillien, Virgile; Nicolas, Jean-louis; Boudry, Pierre; Pernet, Fabrice; Huvet, Arnaud.
Pacific oyster Crassostrea gigas suffers from chronic or sporadic mortality outbreaks worldwide, resulting from infectious diseases and/or physiological disorders triggered by environmental factors. Since 2008, ostreid herpesvirus OsHV-1 μVar has been identified as the main agent responsible for mass mortality of juvenile oysters in Europe. Previous studies of genome-wide expression profiling have provided candidate genes that potentially contribute to genetically-based resistance to summer mortality. To assess their value in determining resistance to the juvenile mass mortality that has occurred in France since 2008, we analyzed the expression of 17 candidate genes in an experimental infection by OsHV-1 μVar, and in an in vivo field experiment. Individual...
Tipo: Text
Palavras-chave: Molluscs; Gene expression profiling; Inhibitor of kappa B; Summer mortality; Ostreid herpesvirus.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00177/28823/27325.pdf

In vitro culture of mollusc hemocytes. Functional study of burst respiratory activity and analysis of interactions with protozoan and procaryotic pathogens
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Boulo, Viviane; Hervio, Dominique; Morvan, Annie; Bachere, Evelyne; Mialhe, Eric.
The chief importance of hemocytes as immune effectors in molluscs has led to develop researches for in vitro culture. The chemiluminescence technique has been used to estimate the phagocytosis capacity of Crassostrea gigas hemocytes according to different culture media and times. Sea water was used as a basic medium. Additives, such as antibiotics or glucose and buffers, such as Tris or Hepes, were tested as weIl as artificial sea water. Hemocyte chemiluminescence activities were recorded at t=o in relation to the medium composition. The highest values were observed when hemocytes were kept in sea water without any modification. Whichever medium, chemiluminescence activity was substantially decreased when hemocytes were previously kept in vitro for a few...
Tipo: Text
Palavras-chave: Crassotrea gigas; Oyster; Bonamia ostreae; Pathogens; Molluscs; Hemocytes.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/1991/acte-4115.PDF

The role of microalgae in aquaculture: situation and trends
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Muller-feuga, Arnaud.
Algae are utilized diversely in aquaculture, but their main applications are related to nutrition. They are used in toto, as a sole component or as a food additive to supply basic nutrients, color the flesh of salmonids or for other biological activities. The need for nutritional sources safer than traditional animal products has renewed interest in plants in general and algae in particular. This report deals principally with the nutritional role of microalgae in aquaculture.The larvae of molluscs, echinoderms and crustaceans as well as the live prey of some fish larvae feed on microalgae. Though attempts have been made to substitute inert particles for these micro-organisms which are difficult to produce, concentrate and store, only shrimp and live prey...
Tipo: Text
Palavras-chave: Shrimp; Post larvae; Phytoplankton; Molluscs; Microalgae; Hatchery; Fish; Aquaculture.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/publication-497.pdf

First evidence for a Vibrio strain pathogenic to Mytilus edulis altering hemocyte immune capacities
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Ben Cheikh, Yosra; Travers, Marie-agnes; Morga, Benjamin; Godfrin, Yoann; Rioult, Damien; Le Foll, Franck.
Bacterial isolates were obtained from mortality events affecting Mytilus edulis and reported by professionals in 2010-2013 or from mussel microflora. Experimental infections allowed the selection of two isolates affiliated to V. splendidus/V. hemicentroti type strains: a virulent 10/068 1T1 (76,6% and 90% mortalities in 24h and 96h) and an innocuous 12/056 M24T1 (0% and 23,3% in 24h and 96h). These two strains were GFP-tagged and validated for their growth characteristics and virulence as genuine models for exposure. Then, host cellular immune responses to the microbial invaders were assessed. In the presence of the virulent strain, hemocyte motility was instantaneously enhanced but markedly slowed down after 2h exposure. By contrast, hemocyte velocity...
Tipo: Text
Palavras-chave: Innate immunity; Molluscs; Cell-mediated immune response; Bacterial infections; Green fluorescent protein.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00302/41336/40522.pdf

Scientific Opinion on an update on the present knowledge on the occurrence and control of foodborne viruses
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
A review of the biology, epidemiology, diagnosis and public health importance of foodborne viruses was performed. Data needs to support a risk assessment were also identified. In addition possible control options and their anticipated impact to prevent or reduce the number of foodborne viral human infections were identified, including the scientific reasons for and against the establishment of food safety criteria and process hygiene criteria for viruses for certain food categories. Food may be contaminated by virus during all stages of the food supply chain, and transmission can occur by consumption of food contaminated during the production process (primary production, or during further processing), or contaminated by infected food handlers. Transmission...
Tipo: Text
Palavras-chave: Food borne viruses; Norovirus; Hepatitis; Microbiological criteria; Molluscs; Fresh produce.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00066/17734/15255.pdf

Contribution à l'étude de mollusques marins : Iridovirus-like et Herpèsvirus-like. Description, caractérisation biochimique, cycle de multiplication viral, diagnostic et étude épidémiologique
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Renault, Tristan; Le Deuff, Rose-marie; Cochennec, Nathalie; Chollet, Bruno; Maffart, Patricia.
Among the marine molluscs, Pacifie oyster, Crassostrea gigas, is actually the most reared specie in the world. Noticely in France, where it was imported between 1960 and 1970, and replaced by Portuguese oyster, Crassostrea angulata, which specie was decimated during this period because of iridoviruses. Uncontroled introductions of new species may however be hazardous. Indeed, they might be responsible for the appearance and the dissemination of new diseases of bivalve molluscs in importing country. In addition to these observations, the quasi monobreeding of Pacific oyster in France enhances the necessity to develop research concerning the diagnosis of pathologies affecting this specie, namely the diagnosis of viral diseases. Several families of viruses...
Tipo: Text
Palavras-chave: Mollusques; Crassostrea gigas; Pathologie; Iridovirus; Herpèsvirus; Diagnostic; Molluscs; Crassostrea gigas; Pathology; Iridovirus; Herpesvirus; Diagnosis.
Ano: 1993
URL: http://archimer.ifremer.fr/doc/00041/15230/12548.pdf

Development of a duplex Taqman real-time PCR assay for rapid identification of Vibrio splendidus -related and V. aestuarianus strains from bacterial cultures
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Saulnier, Denis; De Decker, Sophie; Tourbiez, Delphine; Travers, Marie-agnes.
To enable the rapid and accurate identification of Vibrio splendidus-related and V. aestuarianus strains associated with Pacific cupped oyster Crassostrea gigas mortality, we developed a duplex Taqman real-time PCR assay and evaluated its efficacy. This technique proved to be rapid, sensitive, and specific and will be particularly valuable for epidemiologic studies.
Tipo: Text
Palavras-chave: Multiplex real-time PCR; Gene sequencing; Molluscs; Splendidus Glade; Vibrio aestuarianus.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00392/50308/51077.pdf

Evaluation of the carrying capacity of molluscan shellfish ecosystems
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Heral, Maurice.
Growth of molluscs raised in coastal zones, where the water exchange rate is low, appears to be limited, once a certain biomass level is attained, by the availability of food, making it necessary to determine as accurately as possible the trophic capacity of an ecosystem. This paper analyses the various sources of food for molluscs. It would appear that dissolved organic substances play a major role, providing up to half the energy necessary for their metabolism. Particulate material is filtered by molluscs in proportion to their size, with optimum filtration rates varying with species. The negative effect on meat production of high mineraI seston rates is demonstrated, and an analysis provided of the respective role of each component of organic matter....
Tipo: Text
Palavras-chave: Evaluation; Carrying capacity; Molluscs; Ecosystems; Cochyliculture; Ecosytemes; Molluscs; Evaluation; Capacité biotique.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-2945.pdf

Innovations in the nursery culture and maturation of bivalves
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Flassch, Jean-pierre.
Innovations in the nursery culture and maturation of bivalves are being worked on at aIl levels of research and production, but transfer to the development stage must be effected differently in each case. Over the past twenty years, there have been a great many innovations in bivalve rearing, most of which may be described in terms of rearing conditions: higher and lower densities; confined or open environemnt; overflow; upwelling; floating, suspended, raised or ground systems, etc. The quality of an innovation is characterized by its influence on the efficient operation of the specific culture program and by how easily it may be transferred.
Tipo: Text
Palavras-chave: Maturation; Bivalves; Molluscs; Innovations; Grossissement; Prégrossissement; Bivalves; Mollusques; Innovations.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-6225.PDF

Le réseau de pathologie des mollusques. REPAMO
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Grizel, Henri.
The creation of a mollusc pathology network was in effect and made official during 1992. The subject of this document is to present this network, which has not yet achieved its definitive size.  Why this network?  The creation of this network responds to several institutional and scientific needs. Indeed, the setting up of control measures aimed at regulating mollusc exchanges notably via European Directive 91/67 and its transcription into French law has, as a corollary, caused the recognition of IFREMER as the agency charged with performing the analyses necessary for responding to the needs of this Directive, as far as marine invertebrates are concerned. Moreover, France being among the primary producers of shellfish in the world, the setting up of a...
Tipo: Text
Palavras-chave: Network; Pathology; Molluscs.
Ano: 1996
URL: http://archimer.ifremer.fr/doc/1996/rapport-1922.pdf

Viruses infecting bivalve molluscs
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Renault, Tristan; Novoa, Beatriz.
Bivalve molluscs are filter feeders and as a consequence they may bioaccumulate in their tissues viruses that infect humans and higher vertebrates. However, there have also been described mortalities of bivalve molluscs associated with viruses belonging to different families. Mass mortalities of adult Portuguese oysters, Crassostrea angulata, among French livestocks (between 1967 and 1973) were associated with irido-like virus infections. Herpesviruses were reported in the eastern oyster, Pacific oyster and European flat oyster and lately in scallops and clams. Disseminated neoplasia, a proliferative cell disorder of the circulatory system of bivalves, although of uncertain aetiology, has been suggested to be caused by retroviral infections. Other viruses...
Tipo: Text
Palavras-chave: Infection; Virus; Molluscs; Bivalves.
Ano: 2004
URL: https://archimer.ifremer.fr/doc/2004/publication-2910.pdf

Some regulatory issues related to perkinsosis
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Berthe, Franck.
Perkinsosis is one of the OIE listed diseases of molluscs caused by Perkinsus marinus and P. olseni. Consequently, molluscs originating from endemic areas should not be transferred into areas free of the disease. Impediments to the implementation of international zoosanitary regulation will be reviewed.
Tipo: Text
Palavras-chave: Pathology; Molluscs; Perkinsus olseni; Perkinsus marinus.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/acte-3284.pdf

Les virus infectant les mollusques marins : un exemple d'actualité, les herpèsvirus
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Renault, Tristan.
Although viruses have been associated with mortality outbreaks in different mollusc species, little information is available on their exact affiliation and taxonomic position. Herpes viruses have attracted particular attention because of their economic and ecological impact on both farmed and wild marine molluscs over the past 20 years. Investigations based on molecular approaches have been carried out on the herpes virus infecting Pacific oysters in France. Molecular and ultra-structural data were used to classify the virus under the name ostreid herpesvirus 1 (OsHV-1), as the first known species in the family Malacoherpesviridae. Since 2008, massive mortality outbreaks were reported in several Crassostrea gigas oyster farms in France, Ireland, and the...
Tipo: Text
Palavras-chave: Molluscs; Pacific cupped oyster; Herpes virus; Ostreid herpesvirus 1; Excess mortality.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00069/18000/15562.pdf

Bionomie benthique de l'estuaire de la Loire. I. Observations sur l'estran maritime de la mer a Cordemais.
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Marchand, Jocelyne.
This study was the first to be undertaken since 1901, since when natural and industrial changes had occurred to affect the habitat. Observations are reported here for the banks of the north and south shores, using certain points as reference. Features of the 2 shores are described, and an inventory given of the fauna of the banks. Hydrozoan Cnidaria, Bryozoans, Annelids, Molluscs, Crustacea and fish are listed with notes, and particular attention is given to the crabs found (Rhithropanopeus harrisii tridentatus). The monthly distribution of crab sizes and sexes is given, and the species of animals found in association with crabs is shown to vary according to the site studied. The percentage of female crabs found to be fertile each month was investigated,...
Tipo: Text
Palavras-chave: Crustacea and fish; Molluscs; Fauna; Habitat; Observation; Loire; Benthic bionomy.
Ano: 1972
URL: http://archimer.ifremer.fr/doc/1972/publication-2069.pdf

REPAMO - REseau de PAtologie des MOlusques : Bilan des examens zoosanitaires réalisés en 1998
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Pichot, Yves.
Tipo: Text
Palavras-chave: Virus; Parasitology; Monitoring; Bivalves; Molluscs.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/1999/rapport-1600.pdf

NMR structure of mussel mytilin, and antiviral-antibacterial activities of derived synthetic peptides
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Roch, Philippe; Yang, Y; Toubiana, Mylene; Aumelas, A.
Mytilin is a 34-residue antibacterial peptide from the mussel Mytilus galloprovincialis, which in addition possesses in vitro antiviral activity. The three-dimensional solution structure of the synthetic mytilin was established by using 1H NMR and consists of the common cysteine-stabilized alpha beta motif close to the one observed in the mussel defensin MGD-1. Mytilin is characterized by 8 cysteines engaged in four disulfide bonds (2-27, 6-29, 10-31, and 15-34) only involving the beta-strand II. Hydrophilic and hydrophobic areas of mytilin account for 63% and 37%, respectively, a ratio very close to that of MGD-1 (64% and 36%). One linear and three cyclic fragments were designed from the interstrand loop sequence known to retain the biological activities...
Tipo: Text
Palavras-chave: Shrimp; Molluscs; Mussel; Antibacterial activity; WSSV; Viral protection; Beta hairpin structure; NMR; Mytilin; Antimicrobial peptide.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4485.pdf

Development of culture techniques for new bivalve species
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bodoy, Alain; Mercer, J. P.
Were are two main reasons for the development of cultivation techniques of new  bivalve species. First, the risk exists that traditionally reared species may be ereadicated or severely depleted by pathogenic agents. For example the Portuguese 0yster  Crassostrea angulata. disapeared from the French coasts in the early 1970's and worldwide production of the flat oyster, Oslrea edulis has been dramatically reduced by the effects of Bonamia.  Secondly, in some countries production may he self-Iimiting by the size and availabilily of national and international markets and a wider species range could offer some promising new economic opportunities for aquaculturists. In particular this applies to species where there are identifiable market shortfalls.
Tipo: Text
Palavras-chave: Haliotis tuberculata; Ostrea edulis; Placopecten magellanicus; Scallops; Ruditapes philippinarum; Manila clam; Molluscs; Cultivation techniques.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/1990/publication-3033.pdf

Assessment of human enteric viruses in cultured and wild bivalve molluscs
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Luz Vilarino, M.; Le Guyader, Soizick; Polo, David; Schaeffer, Julien; Krol, Joanna; Romalde, Jesus L.
Standard and real-time reverse transcription-PCR (rRT-PCR) procedures were used to monitor cultured and wild bivalve molluscs from the Ria de Vigo (NW Spain) for the main human enteric RNA viruses, specifically, norovirus (NoV), hepatitis A virus (HAV), astrovirus (AsV), rotavirus (RT), enterovirus (EV), and Aichi virus (AiV). The results showed the presence of at least one enteric virus in 63.4% of the 41 samples analyzed. NoV GII was the most prevalent virus, detected in 53.7% of the samples, while NoV GI, AsV, EV, and RV were found at lower percentages (7.3, 12.2, 12.2, and 4.9%, respectively). In general, samples obtained in the wild were more frequently contaminated than those from Cultured (70.6 vs. 58.3%) molluscs and were more readily contaminated...
Tipo: Text
Palavras-chave: Seafood industry; Viral quantification; Viral prevalence; Norovirus; Hepatitis A virus; Enteric viruses; Molluscs.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6957.pdf

Evaluation of the gonad volume throughout magnetic resonance imaging in Crassostrea gigas and comparison with the histological method
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Flahauw, Emilie; Davenel, Armel; Quellec, Stéphane; Quillien, Virgile; Degremont, Lionel; Lapegue, Sylvie; Hatt, Philippe-jacques.
Biological parameters of the cupped oyster Crassostrea gigas such as growth, reproductive effort (duration of the gametogenesis, date of spawning, and fecundity) differ widely among oysters in the same location. Furthermore, most of the traditional methods, like histological observations, could lead to large variability on the observations and the measurements ofthese traits, and large uncertainties on their changes over time. These can be drastically reduced by using Magnetic Resonance Imaging (MRI) which is a non invasive method allowing to measure the same individual during its development. Forty oysters were assessed using MRI for the volume of whole soft body, the intra valves space, the adductor muscle, and the gonad, which also include the digestive...
Tipo: Text
Palavras-chave: Molluscs; Crassostrea gigas; Gonad; Histology; MRI.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00107/21784/19370.pdf

Recommended reporting standards for test accuracy studies of infectious diseases of finfish, amphibians, molluscs and crustaceans: the STRADAS-aquatic checklist
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Gardner, Ian A.; Whittington, Richard J.; Caraguel, Charles G. B.; Hick, Paul; Moody, Nicholas J. G.; Corbeil, Serge; Garver, Kyle A.; Warg, Janet V.; Arzul, Isabelle; Purcell, Maureen K.; Crane, Mark St J.; Waltzek, Thomas B.; Olesen, Niels J.; Gallardo Lagno, Alicia.
Complete and transparent reporting of key elements of diagnostic accuracy studies for infectious diseases in cultured and wild aquatic animals benefits end-users of these tests, enabling the rational design of surveillance programs, the assessment of test results from clinical cases and comparisons of diagnostic test performance. Based on deficiencies in the Standards for Reporting of Diagnostic Accuracy (STARD) guidelines identified in a prior finfish study (Gardner et al. 2014), we adapted the Standards for Reporting of Animal Diagnostic Accuracy Studies—paratuberculosis (STRADAS-paraTB) checklist of 25 reporting items to increase their relevance to finfish, amphibians, molluscs, and crustaceans and provided examples and explanations for each item. The...
Tipo: Text
Palavras-chave: Reporting standards; Sensitivity; Specificity; Finfish; Amphibians; Molluscs; Crustaceans; STRADAS-paraTB; Diagnostic validation.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00334/44505/44191.pdf

Bivale mollusc cell culture
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Mialhe, Eric; Boulo, Viviane; Grizel, Henri.
The historical background of bivalve cell culture and its potential uses in molluscan pathology are reviewed. Then, primary cultures for the study of some host-pathogen interactions at the cellular level are considered. Next, alternative methods to classical cell cultures are examined that may lead to the production of bivalve celllines.
Tipo: Text
Palavras-chave: Cell culture; Pathology; Molluscs.
Ano: 1988
URL: http://archimer.ifremer.fr/doc/1988/publication-3122.pdf

Bilan 2006 du réseau Repamo. Réseau national de surveillance zoosanitaire des mollusques marins
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Francois, Cyrille; Garcia, Celine; Labrut, Sophie; Miossec, Laurence; Arzul, Isabelle; Joly, Jean-pierre; Chollet, Bruno; Robert, Maeva; Ferrand, Sylvie.
Created in 1992, the REPAMO network (Network of mollusc pathology), is a national zoosanitary surveillance network of shellfish health status along the French coasts. Its activities are in keeping with two European Directives, 91/67/EEC and 95/70/EC and are a part of the institutional tasks of Ifremer. The aims of the network are to prevent the introduction and spread of exotic  pathogens and to survey the evolution ofnotifiable pathogens already present in France. The network focused on the survey of listed diseases (bonamiosis and marteiliosis of flat oyster) in two areas under agreement process (zone X and Granville bed in zone IX). In 2006, only samples of the Granville bed could be analysed due to the difficulty to obtain flat oysters (sparse oyster...
Tipo: Text
Palavras-chave: Health status; Shellfish; Molluscs; Pathology; Surveillance; Network; État de santé; Coquillages; Mollusques; Pathologie; Surveillance; Réseau.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/rapport-3812.pdf

Bilan 2005 du réseau REPAMO - Réseau national de surveillance zoosanitaire des mollusques marins
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Garcia, Celine; Arzul, Isabelle; Chollet, Bruno; Ferrand, Sylvie; Francois, Cyrille; Joly, Jean-pierre; Miossec, Laurence; Robert, Maeva; Cuvelier, Nicolas; Lefebvre, Alain; Le Gagneur, Eric; Ropert, Michel; Mouillard, Gilbert; Gerla, Daniel; Le Gal, Dominique; Rocher, Gregory; Langlade, Aime; Bedier, Edouard; Nourry, Max; Martin, Jean-louis; Chabirand, Jean-michel; Fillon, Alain; Robert, Stephane; Courtois, Olivier; D'Amico, Florence; Rumebe, Myriam; Pichot, Yves; Le Gall, Patrik.
Created in 1992, the REPAMO network (Network of mollusc pathology), is a national zoosanitary surveillance network of shellfish health status along the French coasts. Ils activities are in keeping with two European Directives, 91167/EEC and 95170/EC and are a part of the institutional tasks of Ifremer. The aims of the network are to prevent the introduction and spread of exotic pathogens and to sm'vey the evolution of notifiable pathogens already present in France. The network focused on the survey of listed diseases (bonamiosis and marteiliosis of flat oyster) in two areas under agreement process (Granville bed and zone X). In 2005, only samples of the Granville bed could be analysed due to the difflculty to obtain flat oysters (sparse oyster beds, beds...
Tipo: Text
Palavras-chave: Réseau; Surveillance; Pathologie; Mollusques; Coquillages; Etat de santé; Network; Surveillance; Pathology; Molluscs; Shellfish; Health status.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/00086/19704/17346.pdf

Does the prevalence of Bonamia  and Marteilia diseases be reduced on flat oysters (Ostrea edulis) of Atlantic and Mediterranean origin, when they are reared together with the Japanese oyster (Crassostrea gigas) in tidal ponds?
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bodoy, Alain; Bougrier, Serge; Geairon, Philippe; Garnier, Jacqueline; Boulo, Viviane; Heurtebise, Serge.
The flat oyster Ostrea edulis was originally reared in several regions of the European waters. The tidal saline ponds on the Atlantic coasts of France were highly productive before being hit by two consecutive epizooties. Parasitic diseases were described on this species, both of them leading 10 economic losses, as heavy mortalities have usually been recorded before the oysters reach the commercial size. Repeated experiments showed that the two diseases, Marteilia refringens and Bonamia ostreae are still active in this environment. Recently, some evidences were given that haemocytoblasts of Crassostrea gigas had the ability to lyze the Bonamia cells. Therefore, in an experiment of contiguous culture of the two species of oysters, the growth, mortality and...
Tipo: Text
Palavras-chave: Molluscs; Mortalities; Growth; Pathology; Crassostra gigas; Ostrea edulis; Marteilia refringens; Bonamia ostreae.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/1991/acte-3049.pdf

Monoclonal antibodies : a tool for molluscan pathology
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Mialhe, Eric; Boulo, Viviane; Grizel, Henri; Rogier, Hervé; Paolucci, Francis.
Hybridoma technology is reviewed, and the characteristics of monoclonal antibodies are compared with those of polyclonal antibodies. The contribution of monoclonal antibodies to molluscan pathology is developed with special emphasis on their use as diagnostic tools. The results of studies with monoclonal antibodies prepared against the protozoan oyster pathogen Bonamia ostreae are briefly described.
Tipo: Text
Palavras-chave: Pathology; Molluscs; Monoclonal antibody technology.
Ano: 1988
URL: http://archimer.ifremer.fr/doc/1988/publication-3121.pdf

Bilan 2003 du réseau REPAMO - Réseau national de surveillance zoosanitaire des mollusques marins
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Arzul, Isabelle; Garcia, Celine; Joly, Jean-pierre; Miossec, Laurence; Chollet, Bruno; Robert, Maeva; Cuvelier, Nicolas; Lefebvre, Alain; Le Gagneur, Eric; Kopp, Joel; Mouillard, Gilbert; Gerla, Daniel; Le Saux, Jean-claude; Raguenes, Pierre; Le Gal, Dominique; Langlade, Aime; Bedier, Edouard; Nourry, Max; Martin, Jean-louis; Fillon, Alain.
The REPAMO network (network ofmollusc pathology), created in 1986, ensures the survey of shellfish health status along French coasts according? to European Directives 91/67/EEC and 95/70/EEC. The aims of the network are 1 - to prevent the introduction and spread of exotic pathogens, 2-to study the means to decrease the impact of pathogens already present and to survey their evolution. In 2003, the REPAMO network focused on the survey oflisted diseases (bonamiosis and marteiliosis) in two areas under agreement process (Banc de Granville and zone X) and on the study of abnormal morlalities. Number of reported abnormal morlalities has increased in 2003. This rise can be partly explained by the recent network restructuring, but also by the summer heatwave and...
Tipo: Text
Palavras-chave: Réseau; Surveillance; Pathologie; Mollusques; Coquillages; Etat de santé; Network; Surveillance; Pathology; Molluscs; Shellfish; Health status.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/00086/19699/17340.pdf

Traceability of aquatic animals
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Hastein, T; Hill, Bj; Berthe, Franck; Lightner, Dv.
Effective methods of traceability are urgently required for use in research as weil as in different types of aquaculture operations and to control trade in aquatic animais and praducts. In regard to the marking of fish, many different tagging methods have been described and the method to be used depends on the purpose and need for tagging. In contrast, for molluscs and crustaceans, only a few methods of marking such animais have been described, due to the practical difficulties. The authors first describe the different methods for tracing fish and fishery products, by means of external tags, such as Floy tags, Carlin tags and passive integrated transponder tags; chemical marking using inorganic substances su ch as silver nitrate or potassium nitrate,...
Tipo: Text
Palavras-chave: Aquatic animals; Crustacea; Fish; Genetic markers; Molluscs; Tags; Traceability.
Ano: 2001
URL: https://archimer.ifremer.fr/doc/2001/publication-2701.pdf

Bilan du réseau de pathologie des mollusques. REPAMO. 1995
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Grizel, Henri.
Tipo: Text
Palavras-chave: Network; Pathology; Molluscs.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/1995/rapport-1924.pdf

SYstème de BIOmétrie Larvaire de bivalves par analyse d'images
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: De Pontual, Helene.
SYBIOL, SYstem of BIOmetry of Larvae by image analysis, has been designed for measuring larvae of bivalves in a semi automatic way. The main interest of this tool is to provide more information with the extraction of parameters such as area or equivalent diameter. Our purposes are to describe and evaluate the system which is now operational and used in routine in the mollusc hatchery of Argenton.
Tipo: Text
Palavras-chave: Croissance; Elevages larvaires; Mollusques; Analyse d'images; Growth; Larval rearing; Molluscs; Image analysis.
Ano: 1994
URL: http://archimer.ifremer.fr/doc/00451/56302/57890.pdf

Certifying the French population of Crassostrea gigas free from exotic diseases : a risk analysis approach
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Thebault, Anne; Berthe, Franck; Audige, L.
Sample-size calculation in the context of the surveys aimed at substantiating freedom from infection have been commonly undertaken an terrestrial animals over recent years, but not on aquatic animals. A recent model developed by Audigé and Beckett in 1999 can be used to plan and assess animal health surveys. The aim of this study was to adapt that model for marine aquaculture, in particular to help in planning surveys aimed at substantiating freedom form two exotic diseases, mikrocytosis and perkinsosis, in the French population of Crassostrea gigas. As a first approach, farmed animals are so frequent that it would be very difficult to be representative of a single area or zone. To find the most appropriate sampling scheme, the model was run using @Risk...
Tipo: Text
Palavras-chave: Stochastic modelling; Sensitivity modelling; Risk analysis; Oysters; Molluscs; Crassostrea gigas; Certification; Aquatic animal surveys.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/acte-2710.pdf

An integrative approach to species delimitation in Benthomangelia (Mollusca: Conoidea)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Puillandre, Nicolas; Baylac, Michel; Boisselier, Marie-catherine; Cruaud, Corinne; Samadi, Sarah.
DNA sequences are currently used to propose primary hypotheses of species delimitation, especially when morphological variability is difficult to assess. In an integrative taxonomy framework, these hypotheses are then compared with other characters, such as morphology or geography, to produce robust species delimitations. For this purpose, the cytochrome oxidase subunit I (COI) gene has been sequenced for almost 50 specimens of the genus Benthomangelia, a deep-sea marine gastropod genus, collected in the South-West Pacific. Five genetic groups, displaying low and high genetic distances respectively within and between groups, were defined. COI hypotheses were compared with both the results obtained with the independent nuclear 28S gene and with an elliptic...
Tipo: Text
Palavras-chave: 28S rRNA; COI gene; DNA taxonomy; Elliptic fourier analysis; Integrative taxonomy; Molluscs.
Ano: 2009
URL: https://archimer.ifremer.fr/doc/00206/31678/30065.pdf

Southeast Asia as the birthplace of unusual traits: the Melongenidae (Gastropoda) of northwest Borneo
Provedor de dados: Naturalis Digital Academic Repository
Autores: Vermeij, G.J.; Raven, H.
In this paper the Miocene to recent melongenid species of northwest Borneo are discussed. The recent fauna is poor with three genera represented by one species each. In the Miocene three (possibly four) genera occur with eight (possibly nine) species of which three are described as new species: Melongena murifactor, uniquely characterized by the formation of a septum walling off the adapical sector of the aperture; Pugilina erecta, characterized (along with its close Miocene relative from Java, P. ickei) by a free-edged, erect inner lip; Volema goliath, large for the genus with later whorls progressively covering the upper row of spines of earlier whorls. The apertural septum of M. murifactor is unique within Gastropoda, whereas the erect inner lip of P....
Tipo: Article / Letter to the editor
Palavras-chave: Gastropoda; Melongenidae; Mollusca; Molluscs; 38.22; 42.73.
Ano: 2009
URL: http://www.repository.naturalis.nl/record/320196

Miocene long-lived lake Pebas as a stage of mollusc radiations, with implications for landscape evolution in western Amazonia
Provedor de dados: Naturalis Digital Academic Repository
Autores: Wesselingh, F.P.
The Miocene Pebas system was a huge (&gt; 1 million km2) system of long-lived lakes and wetlands that occupied most of western Amazonia between c. 23 and 8 Ma. Remarkable endemic radiations of molluscs and ostracods occurred in the Pebas system. The continuity of many of the endemic lineages between c. 17 and 9 Ma shows that the system was never fully replaced by fluvial or marine settings. Many of the endemic invertebrate groups developed an unusual range of morphologies that reflect adaptation to specific ecological stresses provided by the Pebas system, such as chemical stress, common dysoxia and high predation pressure. Mollusc diversity increased especially during the Middle Miocene. The Pebas system provided pathways for mobile marine organisms to...
Tipo: Article / Letter to the editor
Palavras-chave: Miocene; Amazonia; Molluscs; Landscape evolution; Pebas Formation; 42.73; 38.22.
Ano: 2006
URL: http://www.repository.naturalis.nl/record/209724

Etude morphométrique du mollusque gastéropode "Patella caerulea Linnaeus" , 1758 des côtes nord de la Tunisie
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Belkhodja, H.; Romdhane, M. S.
La patelle, Patella caerulea Linnaeus, 1758, est un mollusque gastéropode très fréquent sur toutes les côtes rocheuses tunisiennes. Elle expose des traits écologiques et comportementaux complexes qui varient d’un milieu à un autre. Dans cette étude, nous nous proposerons d’analyser la diversité morphométrique de P. caerulea peuplant trois sites rocheux des côtes nord de la Tunisie (Canal de Bizerte, La Goulette et Sidi Rais). Le test t de Student, le test "t" : de pente (tpe) et de position (tpo) ont été utilisés pour la comparaison des pentes et des positions des droites de régressions entre les 3 populations étudiées. A l’échelle globale, les résultats des trois relations allométriques (longueur-hauteur, longueur-largeur et largeur-hauteur), mises en...
Tipo: Journal Contribution
Palavras-chave: Molluscs; Biometrics; Molluscs.
Ano: 2012
URL: http://hdl.handle.net/1834/5297

Etude de la reproduction de "Patella caerulea" linnaeus, 1758 (mollusque, gasteropode) de la côte nord de la Tunisie
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Belkhodja, H.; Jaafoura, M..H.; Missaoui, H.; Romdhane, M.S.
Dans cette étude, nous nous sommes intéressés à la détermination des différents stades du développement gonadique chez le mollusque gastéropode: Patella caerulea prélevé au niveau de la station Canal de Bizerte située sur la côte nord de la Tunisie en nous basant sur les techniques d'histologie classique de la gonade. Cette étude s’est déroulée sur une période allant de mars 2006 à août 2007 et a porté sur 552 spécimens de longueur comprise entre 20,73 et 45,14 mm (± 4,59 mm). L’étude de la sex-ratio a montré une nette dominance des mâles par rapport aux femelles. L’activité gonadique a démarré en août/septembre pour les deux sexes. Chez les mâles, une émission principale des gamètes a eu lieu entre mai et août 2006 et entre avril et juillet 2007. Pour les...
Tipo: Journal Contribution
Palavras-chave: Molluscs; Reproduction.
Ano: 2010
URL: http://hdl.handle.net/1834/4697

Valorisataion de l’apport nutritionel d’un mollusque  bivalve "Mactra corallina"  des côtes tunisiennes  (Kalaât  El Andalous)
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Chetoui, I.; Rabeh, I.; Telahigue, K.; Ghazali, N.; Boussoufa, D.; El Cafsi, M.
L’analyse des composés biochimiques d’un bivalve marin Mactra corallina récolté, pendant le mois de Mars 2009, des plages de Kalaât El Andalous (Ka) du Golfe de Tunis, nous  a permis de relever une quantité relativement importante de l’acide palmitique (C16 :0), de l’acide eicosapentaénoîque (EPA, C20 : 5n-3) et de l’acide docosahexaénoîque (DHA C22 : 6 n-3). La teneur en  glycogène est plus élevée au niveau des muscles adducteurs (22,15mg/g MF) qu’au niveau de l’ensemble glande digestive-gonade (2,57mg/g MF). Ce dernier ensemble présente cependant une quantité plus importante en protéines totales.
Tipo: Journal Contribution
Palavras-chave: Molluscs; Nutrient availability.
Ano: 2010
URL: http://hdl.handle.net/1834/4730

Density and population structure of Pinna Nobilis (Mollusca, Bivalvia) in the Ghar el Melh lagoon (n-e Tunisia)
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Zakhama-Sraieb, R.; Sghaier, Y.S.; Omrane, A.; Charfi Cheikhrouha, F.
Ce papier s’intéresse à l’étude de la densité et la structure de la population de Pinna nobilis au niveau de la lagune de Ghar El Melh. Le travail de terrain a été mené in situ en 2007 au niveau de 4 stations selon un transect allant du Boughaz (communication mer-lagune) vers l’intérieur de la lagune. La population de P. nobilis étudiée est localisée au niveau d’un herbier mixte de Cymodocea nodosa, Ruppia et Nanozostera. Un gradient de la densité de population a été observé en s’éloignant de la rencontre mer-lagune (9,63 ind.100m-²) vers l’intérieur de la lagune (0,07 ind.100m-²). L’âge maximal est estimé à 9,7 ans, et semble être lié à l'amélioration de la qualité de l'eau dans la zone sous influence marine après l'ouverture du canal de communication...
Tipo: Journal Contribution
Palavras-chave: Molluscs; Molluscs.
Ano: 2011
URL: http://hdl.handle.net/1834/4739

Onshore nursery rearing of bivalve molluscs in Belgium
Provedor de dados: Open Marine Archive
Autores: Claus, C.; Maeckelberghe, H.; De Pauw, N.
From October to April the growth of spat of &lt;i&gt;Ostrea edulis, Crassostrea gigas&lt;/i&gt; and &lt;i&gt;Venerupis semidecussata&lt;/i&gt; in an onshore nursery was recorded as a function of water temperature and food level. The results of this study indicate that even very eutrophic water, such as that of the Sluice Dock at Ostend, Belgium, does not provide enough microalgae to sustain growth of bivalve spat during winter, irrespective of whether the water is heated or not. It is necessary to supply additional food (cultured live algae). Food shortage for three months at higher temperature induced a stress situation resulting in high mortality rates, even after transferring all the spat into an optimal combination of temperature and food availability.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture techniques; Rearing; Bivalvia; Molluscs; Belgium.
Ano: 1983
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3369

Size-mass relationships of Melanoides tuberculatus (Thiaridae: Gastropoda) in a eutrophic reservoir
Provedor de dados: Revista Brasileira de Zoologia
Autores: Silva,Eduardo Carvalho; Molozzi,Joseline; Callisto,Marcos.
This study evaluated the relationships of certain allometric measurements in Melanoides tuberculatus Muller, 1774, in order to develop a statistical model to estimate the biomass of this mollusc species. We measured the total length and aperture of 70 shells. These measurements were correlated with the biomass values to construct exponential and power-function models, and both models showed high coefficients of determination. The exponential model was the better biomass predictor, with a coefficient of determination over 93%. These proposed models may be an effective tool to determine the biomass of M. tuberculatus in eutrophic Brazilian reservoirs.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometry; Dry mass; Eutrophication; Molluscs.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000500004

Is there redundancy in bioengineering for molluscan assemblages on the rocky shores of central Chile?
Provedor de dados: Revista Chilena de Historia Natural
Autores: KELAHER,BRENDAN P; CASTILLA,JUAN CARLOS; PRADO,LUIS.
Bioengineers modify habitats via their own physical structures and substantially increase local diversity in marine ecosystems. On rocky shores, there are large overlaps in the composition of communities associated with bioengineers that form complex mat-like habitats. We investigated the potential for redundancy in habitat provision by these types of habitats by comparing diverse molluscan assemblages associated with Perumytilus purpuratus mussel beds and algal turfs of Corallina officinalis var. chilenis, Gelidium chilense and Gastroclonium cylindricum. At three times between September 2003 and January 2004, we sampled the molluscan assemblages associated with each bioengineer at similar tidal heights on two rocky shores on the coast of central Chile. Of...
Tipo: Journal article
Palavras-chave: Bioengineer; Molluscs; Redundancy; Coralline turfs; Mussels; Rocky shores; Chile.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2007000200004

Contaminação por mercúrio em sedimento e em moluscos do Pantanal, Mato Grosso, Brasil
Provedor de dados: Zoologia
Autores: Vieira,Luiz M.; Alho,Cleber J.R.; Ferreira,Geraldo A.L.
The total level of mercury detected in the sediment and in the tissues of molluscs from the Bento Gomes basin, although low, have shown that the mercury used in the gold mining activities in the Poconé wetlands has contaminated those aquatic habitats in Pantanal. From 69 sediment samples analyzed, 26 % (N = 18) have shown levels ranging from 0.01 to 0.25µg.g-1 of mercury (moist weight). Mercury levels analyzed in 54 samples of mollusc tissues (Ampullaria scalaris Orbigny, 1835; A. canaliculata Lamarck, 1819 and Marisa planogyra Pilsbry, 1933) have shown that 30% (N = 16) were contaminated with levels ranging from 0.02 to 1.16µg.g-1 moist weight. This study shows that the mercury used in digs for gold mining and released into the environment has reached the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Molluscs; Biomagnification; Contaminants; Mercury; Sediment.
Ano: 1995
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000300022

Moluscos aquáticos atuais de ecossistemas costeiros em Imbituba, Imaruí e Laguna, Santa Catarina, Brasil: parâmetro de caracterização para paleoambientes
Provedor de dados: Zoologia
Autores: Veitenheimer-Mendes,Inga Ludmila; Lopes-Pitoni,Vera Lúcia.
This paper registers 16 species of aquatic molluscs, especially the limnic and estuarine species Heleobia davisi Silva &amp;amp; Thomé, 1985, Heleobia australis australis (Orbigny, 1835) and Erodona mactroides Bosc, 1802, from D'Una river and Mirim, Imaruí and Santo Antônio lagoons and Laguna Beach (Santa Catarina, Brazil). This parameter was very important for the paleoecological analysis conduced for that area, where oscillation of the sea level occurred during the Holocen Period. Heleobia davisi is registered for the first time to the Santa Catarina.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Molluscs; Limnic; Estuarine; Santa Catarina; Brazil.
Ano: 1995
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000200018

Freshwater gastropods in the Northern littoral mesoregion of Espírito Santo, Brazil
Provedor de dados: Acta Scientiarum: Biological Sciences
Autores: Souza, Marco Antônio Andrade de.
 Studies on the distribution of molluscs in Brazilhave been conducted since the beginning of the twentieth and the knowledge of the species distributed in the country represent important findings, which contribute to the understanding of human diseases and those of veterinary importance, transmitted by them. In order to verify the distribution of freshwater gastropods in Espírito Santo, a malacological surveywas carried out in nine municipalities that comprise the Northern mesoregion of the State, between January 2010 and February 2015. Initially the water collections occurring in the municipality were verified and the lotic systems at different levels of use and conservation were determined. Molluscs were collected monthly using a hand net adapted to a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.00.00.00-6 Ciências Biológicas; Plicada 2.04.00.00-4 Zoologia; 2.13.03.00-2 Entomologia e Malacologia de Parasitos e Vetores; Zoology; Invertebrates; Molluscs; Habitats diversity; Ecology Limnologia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34631

Abundance of the reef-building Petaloconchus varians (Gastropoda: Vermetidae) on intertidal rocky shores at Ilha Grande Bay, southeastern Brazil
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: BREVES,ANDRÉ; SZÉCHY,MARIA TERESA M. DE; LAVRADO,HELENA P.; JUNQUEIRA,ANDREA O.R.
ABSTRACT The reef-building vermetid Petaloconchus varians occurs in the western Atlantic Ocean, from the Caribbean Sea to the southern coast of Brazil. The present study evaluated the abundance of P. varians on intertidal rocky shores in Ilha Grande Bay (Rio de Janeiro State), and characterized their reefs, describing the species density, besides the weight and the belt width of the reefs. Petaloconchus varians reefs were recorded at 25 sites, with rocky shores exposed to different wave action (very sheltered, sheltered, semi-exposed and exposed) and slopes (10° to 46°). Clusters of individuals constructed large reefs along the middle intertidal zone, creating a wide belt (38 cm to 2 m). The density of P. varians and the weight of the reefs ranged from 620...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abundance; Molluscs; Rio de Janeiro; Southwestern Atlantic Ocean; Wave exposure.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300907

Synopsis of the knowledge on the Brazilian aplacophorans (Mollusca: Caudofoveata &amp;amp; Solenogastres)
Provedor de dados: Biota Neotropica
Autores: Passos,Flávio Dias; Miranda,Marcel Sabino; Corrêa,Paulo Vinicius Ferraz.
Abstract: Aplacophorans are well known as exclusively marine benthic molluscs with a vermiform body covered by aragonitic sclerites (also called spicules), whose species are widely distributed from the sublittoral down to the abyss. Currently, only nine species are known from Brazil (one Solenogastres and eight Caudofoveata), but these very few records are no longer a reflection of an existing low diversity. Sampling in deep waters has been conducted recently in oil-rich areas of the Brazilian coast, and the museum collections have now many aplacophoran lots. There is a need to learn about and/or install some microscopical facilities in Brazilian institutions, to form expertise for the investigations on these generally small animals. With studies on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aplacophora; Molluscs; Biodiversity; Southwestern Atlantic.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000100201

First record of Corbicula largillierti (Philippi 1844) in the Paraíba River Basin and potential implications from water diversion of the São Francisco River
Provedor de dados: Biota Neotropica
Autores: Azevêdo,Evaldo de Lira; Barbosa,José Etham de Lucena; Vidigal,Teofânia H. D. A.; Callisto,Marcos; Molozzi,Joseline.
Corbicula largillierti is a native mollusk from China. In Brazil, this species was first recorded in the Pantanal of Mato Grosso. This short communication reports the occurrence of C. largillierti for the first time in the Paraíba river basin (Brazilian semi-arid), and also considers the risk of introduction of other molluscs invaders in this basin due to the diversion of water from the São Francisco River. Densities of individuals ranged from 33 to 65 ind.m-2 (maximum values of 484 ind.m-2) in coarse sediment (gravel, 2-4 mm). The diversion of waters from the São Francisco river can lead to the introduction of new species, enhancing ecological problems in the Paraiba river basin.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Invasive species; Semi-arid; Molluscs; Corbiculidae.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032014000400401