Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 22
Primeira ... 12 ... Última
Imagem não selecionada

Imprime registro no formato completo
A first generation genetic linkage map of the European flat oyster Ostrea edulis (L.) based on AFLP and microsatellite markers ArchiMer
Lallias, Delphine; Beaumont, A.r.; Haley, C.s.; Boudry, Pierre; Heurtebise, Serge; Lapegue, Sylvie.
This study presents the first genetic linkage map for the European flat oyster Ostrea edulis. AFLP and 20 microsatellite markers were genotyped in a three-generation pedigree comprised of 2 grand-parents, 2 parents and 92 progeny. Chi-square goodness of fit tests revealed high segregation distortion, which was significant for 32.8% of markers. Sixteen microsatellites and 235 AFLPs (170 AFLPs type 1:1 and 65 AFLPs type 3:1) were used to build sex-specific linkage maps using CriMap software. The first parental map (P1) consisted of 104 markers grouped in nine linkage groups, spanning 471.2 cM with an average spacing of 4.86 cM. The second parental map (P2) consisted of 117 markers grouped in ten linkage groups (which equals the haploid chromosome number),...
Tipo: Text Palavras-chave: Microsatellite; AFLP; Ostrea edulis; Flat oyster; Genetic linkage map.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-2642.pdf
Imagem não selecionada

Imprime registro no formato completo
A first genetic linkage map of the European flat oyster, Ostrea edulis : towards the identification of Bonamia resistance QTLs ArchiMer
Lallias, Delphine; Lapegue, Sylvie; Haley, Chris; Heurtebise, Serge; Boudry, Pierre; Beaumont, Andy.
The flat oyster Ostrea edulis is an endemic European oyster species, found on both Atlantic and Mediterranean coasts. Its aquacultural production has dramatically decreased due to two successive diseases caused by the intracellular parasites Marteilia refringens and Bonamia ostreae. Since 1985, Ifremer has undertaken a breeding program to produce oyster families which are tolerant to Bonamia. In this context, the next step is to identify QTLs for resistance to this parasite. A genetic map is therefore being established as a basis for QTL work. The reference family is an F2 family produced by single pair mating of two oysters from the same F1 family. The F1 family was itself produced from a bi-parental cross between a wild oyster and an individual from the...
Tipo: Text Palavras-chave: Genetic linkage map; Parasite; Genetic; QTLs; Resistance; Bonamia ostreae; Ostrea edulis; Flat oyster.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/acte-3464.pdf
Imagem não selecionada

Imprime registro no formato completo
A first linkage map for the European flat oyster, Ostrea edulis towards the identification of Bonamia resistance QTLs ArchiMer
Lallias, Delphine; Beaumont, Andy; Haley, Chris; Heurtebise, Serge; Boudry, Pierre; Lapegue, Sylvie.
The flat oyster Ostrea edulis is an endemic European oyster species, found on both Atlantic and Mediterranean coasts. Its aquacultural production has dramatically decreased due to two successive diseases caused by the intracellular parasites Marteilia refringens and Bonamia ostreae. Since 1985, Ifremer has undertaken a breeding program to produce oyster families which are tolerant to Bonamia. In this context, a genetic map was therefore established as a basis for Quantitative Trait Loci (QTLs) analysis. The reference family was an F2 family coming from a first bi-parental cross between a wild oyster and an individual from the fifth generation inbred line of the Bonamia tolerance selection program. This inbred line had shown no mortality when reared in...
Tipo: Text Palavras-chave: Parasite; Bonamia ostreae; Bonamiosis; QTL; Genetic; Ostrea edulis; Flat oyster.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/acte-3459.pdf
Imagem não selecionada

Imprime registro no formato completo
A preliminary genetic linkage map for the European flat oyster Ostrea edulis L. ArchiMer
Lallias, Delphine; Lapegue, Sylvie; Harley, Crhis; Boudry, Pierre; Heurtebise, Serge; Beaumont, Andy.
The flat oyster Ostrea edulis is the species endemic to European coasts, both Atlantic and Mediterranean. It has been exploited since Roman times, but its aquaculture production decreased from around 20000 tons in the 1950's to 1500 tons today because of two successive diseases due to the intracellular parasites Marteilia refringens and Bonamia ostreae. Since 1985, Ifremer has been undertaking a breeding program to produce families of oysters tolerant to Bonamia. In this context, a further step would be to identify QTLs for resistance to this parasite. Therefore, as a first step a genetic map is now being built. The establishment of a genetic linkage map will provide a foundation for the mapping of QTLs, with the ultimate objective to implement...
Tipo: Text Palavras-chave: QTLs; Ostrea edulis; Flat oyster; Genetic linkage map; Genetic.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/acte-3466.pdf
Imagem não selecionada

Imprime registro no formato completo
Bilan de l'état zoosanitaire des mollusques en Méditerranée française : 1988-2001 ArchiMer
Pichot, Yves.
The fact that molluscs from the Mediterranean have benefited from a privileged zoosanitary condition compared to those of the other French coasts has for a long time limited the control of farms and natural fields in this area. It is only in the early 70's, because of the pathological problems and risks observed in other areas that Mediterranean molluscs started to be stictly under zoosanitory control. This control was however limited until the early 90's. With the implementation of the European directives 91/67 and 95/70 for the protection of molluscs against diseases and their propagation, with the creation in 1992 of REPAMO- IFREMER (with a watch unit in the Mediterranean), the control of molluscs in the Mediterranean has considerably improved. Since...
Tipo: Text Palavras-chave: Méditerranée; Zoosanitaire; Mortalité; Huître plate; Ostrea edulis; Huître creuse; Crassostrea gigas; Moule; Mytilus galloprovincialis; Palourde; Tapes decussatus; Telline; Donas trunculus; Mediterranean; Zoosanitary; Mortality; Flat oyster; Ostrea edulis; Pacific cupped oyster; Crassostrea gigas; Mussel; Mytilus galloprovincialis; Clam; Tapes decussatus; Coquina clam; Donax trunculus.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/00145/25579/23717.pdf
Imagem não selecionada

Imprime registro no formato completo
Can the protozoan parasite Bonamia ostreae infect larvae of flat oysters Ostrea edulis? ArchiMer
Arzul, Isabelle; Langlade, Aime; Chollet, Bruno; Robert, Maeva; Ferrand, Sylvie; Omnes, Emmanuelle; Lerond, Sophie; Couraleau, Yann; Joly, Jean-pierre; Francois, Cyrille; Garcia, Celine.
Bonamia ostreae is an intracellular protistan parasite affecting flat oysters Ostrea edulis. It can be detected in juveniles but mortalities mainly affect oysters which are more than 2 years old. The parasite is usually observed inside haemocytes and sometimes free, notably in gill epithelia suggesting a parasite release through this organ. However, the infective form and ways of entry and release remain undetermined. Flat oysters incubate their larvae in their pallial cavity for 8–10 days before releasing them into the water column. Flat oysters in Bay of Quiberon in South Brittany (France) are known to be infected with B. ostreae since 1979 and is the most important area in France for O. edulis spat collection. Flat oysters incubating larvae were sampled...
Tipo: Text Palavras-chave: Bonamia ostreae; Flat oyster; Ostrea edulis; Transmission; Larvae; Parasite life cycle.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00028/13898/12566.pdf
Imagem não selecionada

Imprime registro no formato completo
Diversité et différentiation génétique chez l'huître plate européenne : de la population à l'individu (Actes) ArchiMer
Boudry, Pierre; Launey, Sophie; Diaz-almela, A.; Naciri-graven, Yamama; Ledu, Christophe; Mira, S.; Taris, Nicolas; Bonhomme, Francois; Lapegue, Sylvie.
PCR-based DNA markers enable the study of diversity and differentiation of marine organisms at different stages of their life cycle. Our study of European fiat oyster (Ostrea edulis) populations aimed to describe their spatial and temporal dynamics. First, we analyzed adults sampled over the natural range of the species. An Atlantic/Mediterranean differentiation pattern was observed. Similar patterns of variation were found using allozymes, microsatellites and mitochondrial DNA, aIl which support an isolation by distance model. High variability was observed in the range of diversity between populations using a mitochondrial marker, a reflection of small effective population sizes in sorne locations. A 10fold quantitative difference was observed in Fst,...
Tipo: Text Palavras-chave: Recruitment; Diversity; Molecular markers; Population genetics; Ostrea edulis; Flat oyster; Dynamique de recrutement; Diversité génétique; Microsatellites; Marqueurs moléculaires; Génétique des populations; Ostrea edulis; Huître plate.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/2003/acte-2851.pdf
Imagem não selecionada

Imprime registro no formato completo
Effects of temperature and salinity on the survival of Bonamia ostreae parasite infecting falt oyster Ostrea edulis in sea water ArchiMer
Arzul, Isabelle; Bond, Celine; Gagnaire, Beatrice; Chollet, Bruno; Morga, Benjamin; Ferrand, Sylvie; Robert, Maeva; Renault, Tristan.
Bonamiosis due to the intrahaemocytic protistan parasite Bonamia ostreae is a European endemic disease affecting flat oysters Ostrea edulis. The parasite has been described in different ecosystems from estuaries to open sea and no clear correlations could be demonstrated between the development of the disease and environmental parameters such as temperature or salinity. The parasite life cycle, including its survival outside the host is not completely known. Nevertheless, the infection can be directly transmitted by cohabitation between infected and non infected oysters suggesting that the parasite does not need intermediate host to complete its cycle. In the present study, the impact of temperature and salinity on the survival of purified parasites...
Tipo: Text Palavras-chave: Effects; Temperarature; Salinity; Bonamia ostreae; Parasite; Pathology; Flat oyster; Ostrea edulis; Oyster.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/acte-3375.pdf
Imagem não selecionada

Imprime registro no formato completo
Etude cellulaire et moléculaire de l’apoptose chez l’huître plate Ostrea edulis en réponse au parasite Bonamia ostreae ArchiMer
Gervais, Ophelie.
The flat oyster, Ostrea edulis, is the European endemic oyster species. Its production has been reduced because of overfishing and diseases including bonamiosis. Massive mortalities observed on the Pacific cupped oyster these last years explained the wish of shellfish farmers to diversify their production and their revival of interest for this patrimonial oyster species. However, bonamiosis due to the protozoan, Bonamia ostreae, is still a major problem for the production of this species. Measures to control the disease are limited and require a better knowledge of the interactions between the flat oyster and the parasite. Previous studies have suggested the involvement of apoptosis in flat oyster defense mechanisms against B. ostreae. This mechanism is...
Tipo: Text Palavras-chave: Huître plate; Ostrea edulis; Bonamia ostreae; Apoptose; Flat oyster; Ostrea edulis; Bonamia ostreae; Apoptosis.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00370/48142/48243.pdf
Imagem não selecionada

Imprime registro no formato completo
Etude des interactions entre l'huître plate Ostrea edulis et le parasite Bonamia ostreae en cytométrie en flux et en hybridation soustractive suppressive (SSH) ArchiMer
Morga, Benjamin.
The French ostreiculture history highlights the fragility of its production caused by stocks overexploitation and diseases. Particularly, the flat oyster production decreased a lot after the appearance of two parasitic diseases: marteilliose and bonamiose. The bonamiose is due to a parasite Bonamia ostreae. The study of interactions between the parasite and oysters hemocytes with flow cytometry allowed to identify modifications of hemocytes activities wh en active parasite is present. On the other hand, inactive parasite does not induce modification for the same hemocyte's activities. Finally, a new study approach, subtractive and suppressive hybridization, has been undertaken in order to identify genes expressed by hemocytes and parasites during in vitro...
Tipo: Text Palavras-chave: Huître plate; Ostrea edulis; Maladie; Bonamia ostrea; Interaction; Cytométrie en flux; SSH; Flat oyster; Ostrea edulis; Disease; Bonamia ostreae; Interaction; Flow cytometrY; Subtractive and suppressive hybridization.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/00426/53790/54698.pdf
Imagem não selecionada

Imprime registro no formato completo
Etude des interactions hôte/parasite chez l'huître plate Ostrea edulis et son parasite Bonamia ostreae ArchiMer
Morga, Benjamin.
The history of the French oyster production highlights the fragility of this production against overexploitation and disease outbreaks. In particular, the production of flot oyster, Ostrea edulis, has decreased following the emergence of two parasitic diseases including bonamiosis. The means to fight against bonamiosis are relatively limited. They are mainly based on oyster health surveillance to limit the spread of the disease. However, the use of predictive models of disease progression in infected area would help to improve stock management and minimize the impact pathogens. Moreover the development of resistant animais could help to revive this production. These different approaches require appropriate diagnostic tools, a good knowledge of the life...
Tipo: Text Palavras-chave: Huître plate; Ostrea edulis; Bonamiose; Bonamia ostreae; Interaction hôte-parasite; Expression; Résistance; Hémocytes; Hybridation soustractive suppressive; Flat oyster; Ostrea edulis; Bonamiosis; Bonamia ostreae; Interaction host-parasite; Expression; Resistance; Haemocytes; Suppressive subtractive hybridization.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00055/16664/14157.pdf
Imagem não selecionada

Imprime registro no formato completo
Genetic diversity of the European oyster (Ostrea edulis L.) in Nova Scotia: Comparison with other parts of Canada, Maine and Europe and implications for broodstock management ArchiMer
Vercaemer, Bénédikte; Spence, Koren R.; Herbinger, Christophe; Lapegue, Sylvie; Kenchington, Ellen L..
The European oyster (Ostrea edulis) was introduced to the Nova Scotia aquaculture industry 30 years ago using stocks imported from naturalized populations in Maine whose ancestors originated in the Netherlands. This study used 5 microsatellites to assess the level of genetic diversity in several hatchery stocks and naturalized populations from Nova Scotia, New Brunswick, British Columbia and Maine. Some genetic erosion was shown to have occurred in the Maritimes populations, with the largest loss of alleles being experienced by the hatchery stocks. In spite of this loss, genetic diversity and heterozygosity in the Maritimes populations are still relatively high. Relationships within and between the populations and the existence of kin groups within the...
Tipo: Text Palavras-chave: Genetic diversity; Maine; Microsatellites; Flat oyster; European oyster; Ostrea edulis.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-2121.pdf
Imagem não selecionada

Imprime registro no formato completo
Genetic linkage mapping in the blue mussel Mytilus edulis and the European flat oyster Ostrea edulis, and the search for Quantitative Trait Loci of resistance to a disease in O. edulis. ArchiMer
Lallias, Delphine.
Genetic linkage maps consist of ordering molecular markers across the genome and require a high number of markers for a good coverage of the genome. Such maps represent a framework which enables the identification and localisation of Quantitative Trait Loci (QTLs) for traits of interest, such as growth or disease resistance, with the final aim of achieving genetic improvement through marker-assisted selection (MAS). Data on bivalves are scarce. No genetic map has yet been constructed in any mussel or flat oyster species. We report construction of a preliminary genetic linkage map in the blue mussel, Mytilus edulis (n=14). Amplified Fragment Length Polymorphism (AFLP) markers were used in a mapping family containing 86 full-sibs issued from a controlled...
Tipo: Text Palavras-chave: Microsatellite; AFLP; Mussel; Flat oyster; QTL; Genetic mapping; Microsatellite; AFLP; Moule; Huître plate; QTL; Cartographie génétique.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/these-2603.pdf
Imagem não selecionada

Imprime registro no formato completo
Gisement d'huitres plates de Saint Valery en Caux à Saint Aubin ArchiMer
Deschamps, Gerard; Schlaich, Ivan.
Formerly, along the Caux shoreline there were large oyster banks or natural beds of flat oysters. Overexploitation led to downgrading of this bed in 1927. At the beginning of the month of September 1986, the Fécamp local committee of fisheries requested to make three tides over the former bed with the goal of finding new resources. Because these three tides were fruitful, IFREMER was asked to prospect on this oyster bank in order to know whether it could once again be classified.
Tipo: Text Palavras-chave: Classified layer; Normandy; Flat oyster; Gisement classé; Normandie; Huitrière; Huitre plate.
Ano: 1987 URL: http://archimer.ifremer.fr/doc/1987/rapport-2504.pdf
Imagem não selecionada

Imprime registro no formato completo
History, Status, and Future of Oyster Culture in France ArchiMer
Buestel, Dominique; Ropert, Michel; Prou, Jean; Goulletquer, Philippe.
The history of French oyster culture consists of a succession of developmental phases using different species, followed by collapses caused by diseases. The indigenous species Ostrea edulis was replaced first with Crassostrea angulata, then C. gigas. France is now the top producer and consumer of oysters in Europe, producing around 120,000 t of the cupped oyster C. gigas annually, and an additional 1500 t of the flat oyster O. edulis. Cupped oysters are produced all along the French coast from natural and hatchery spat. Various structures are used to collect spat from the wild. After a growing-on period, oysters are Cultivated by three main methods: (1) on-bottom culture in the intertidal zone or in deep water, (2) off-bottom culture in plastic mesh bags...
Tipo: Text Palavras-chave: Cupped oyster; Flat oyster; Ostrea edulis; Crassostrea gigas; French production; Aquaculture.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-7396.pdf
Imagem não selecionada

Imprime registro no formato completo
La bonamiose de l' huître plate Ostrea edulis. Bilan des connaissances actuelles, analyse des données collectées en France de 1989 à 2004, mesures de lutte et perspectives ArchiMer
Blanchet, Estelle.
Bonamiosis, favoured by change of temperature and stress, causes mortalities in the adult flat oyster Ostrea edulis in the majority of European oyster farmers. The life cycle of this Haplosporidia protozoan Bonamia ostreae is unknown, it is not dttectable during the five mon th latent period. Because of the Jack of sensibility of reference techniques, histology and tissue smear, further use of PCR assays or HCM-CC, in particular, is recommended. Analysis of data collected in France from 1989 to 2004 shows the absence of simple prediction methods and an apparent cyclicity of the disease. Transfer restriction and control of boat hulls can protect uninfected areas. Reducing stress and density, commercialising earlier can limit losses in infected areas. The...
Tipo: Text Palavras-chave: Bivalve; Bonamia ostreae; Epidémiologie; Haplosporidia; Huître plate; Lutte; Ostrea edulis; Protozoaire; Surveillance; Bonamia ostreae; Control; Epidemiology; Flat oyster; Haplosporidia; Ostrea edulis; Protozoan; Survey.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/00451/56235/57795.pdf
Imagem não selecionada

Imprime registro no formato completo
Mitochondrial and microsatellite genetic differentiation of the flat oyster Ostrea edulis along the european coasts, and comparison with allozyme data ArchiMer
Lapegue, Sylvie; Diaz-almela, E.; Launey, Sophie; Ledu, Christophe; Boudry, Pierre; Naciri-graven, Yamama; Bonhomme, Francois.
Natural populations of the European flat oyster, Ostrea edulis, have been harvested since Roman times. This species is distributed along the European Atlantic coasts, from Norway to Morocco, as well as the Mediterranean Sea and Black sea coasts. Previous studies, based on allozymes, have concluded that isolation by distance is taking place in the Mediterranean sea and the Atlantic ocean. Because of the presumed non neutrality of these markers, another approach was made to examine the genetic differentiation of this species using nuclear microsatellite and mitochondrial markers, both considered as neutral, and to compare the results to those observed with allozymes.
Tipo: Text Palavras-chave: Microsatellite markers; Ostrea edulis; Flat oyster; Genetic.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/2000/acte-3497.pdf
Imagem não selecionada

Imprime registro no formato completo
Molecular characterisation of an Australian isolate of Bonamia exitiosa ArchiMer
Corbeil, Serge; Arzul, Isabelle; Robert, Maeva; Berthe, Franck; Cochennec, Nathalie; Crane M, Mark.
An Australian (New South Wales) isolate of Bonamia was characterised at the molecular level by sequencing the 18S-ITS-1 region of the small subunit rRNA operon obtained from flat oysters Ostrea angasi shown to be infected by histological examination. Sequence data alignment with homologous genes from 2 other isolates of Bonamia (New Zealand and France) revealed high levels of nucleotide identity with both isolates. However, the Australian Bonamia is shown to be more closely related to the New Zealand isolate, suggesting the existence of an oceanic subgroup of Bonamia.
Tipo: Text Palavras-chave: Small subunit rRNA operon; Flat oyster; Ostrea angasi; Bonamia species.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-1981.pdf
Imagem não selecionada

Imprime registro no formato completo
Molecular responses of Ostrea edulis haemocytes to an in vitro infection with Bonamia ostreae ArchiMer
Morga, Benjamin; Arzul, Isabelle; Faury, Nicole; Segarra, Amelie; Chollet, Bruno; Renault, Tristan.
Bonamiosis due to the parasite Bonamia ostreae is a disease affecting the flat oyster Ostrea edulis. B. ostreae is a protozoan, affiliated to the order of haplosporidia and to the cercozoan phylum. This parasite is mainly intracellular, infecting haemocytes, cells notably involved in oyster defence mechanisms. Suppression subtractive hybridisation (SSH) was carried out in order to identify oyster genes differentially expressed during an infection of haemocytes with B. ostreae. Forward and reverse banks allowed obtaining 1104 and 1344 clones respectively, among which 391 and 480 clones showed a differential expression between both tested conditions (haemocytes alone versus haemocytes in contact with parasites). ESTs of interest including genes involved in...
Tipo: Text Palavras-chave: Bonamia ostreae; Protozoan; Ostrea edulis; Flat oyster; Haemocytes; Gene expression; Suppression subtractive hybridisation.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00018/12879/9828.pdf
Imagem não selecionada

Imprime registro no formato completo
New insights in flat oyster Ostrea edulis resistance against the parasite Bonamia ostreae ArchiMer
Morga, Benjamin; Renault, Tristan; Faury, Nicole; Arzul, Isabelle.
Bonamiosis due to the parasite Bonamia ostreae has been associated with massive mortality in flat oyster stocks in Europe. Control of the disease currently relies on disease management practices and transfer restriction. Previously, massal selections based on survival to challenge to infection with B. ostreae have been applied to produce flat oyster families with resistant progeny. In an attempt to understand the molecular mechanisms involved in disease resistance, differentially expressed sequence tags between resistant and wild Ostrea edulis haemocytes, both infected with the parasite, were identified using suppression subtractive hybridisation. Expression of seven ESTs has been studied using quantitative reverse-transcriptase PCR. The base-line...
Tipo: Text Palavras-chave: Protozoan; Ostrea edulis; Flat oyster; Transcriptomic; Gene expression.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00071/18218/15790.pdf
Registros recuperados: 22
Primeira ... 12 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional