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| Registros recuperados: 54 | |
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| 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 |
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| 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: Folhetos |
Palavras-chave: Molusco; Espécie Nativa; Molluscs; Indigenous species. |
| Ano: 2017 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1085802 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| Registros recuperados: 54 | |
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