|
|
|
| Registros recuperados: 43 | |
|
|
| De Lorgeril, Julien; Gueguen, Yannick; Goarant, Cyrille; Goyard, Emmanuel; Mugnier, Chantal; Fievet, Julie; Piquemal, D; Bachere, Evelyne. |
| Understanding of antimicrobial defence mechanisms of penaeid shrimp should help in the design of efficient strategies for the management and disease control in aquaculture. In this study, we have specifically analysed the expression in circulating hemocytes of antimicrobial peptides (AMPs) encoding genes, such as PEN2 and PEN3, ALF, crustin, lysozyme and a putative cysteine-rich peptide. We evidenced a relationship between the level of expression of some AMPs and the successful response of the shrimp, Litopenaeus stylirostris, to circumvent a pathogenic Vibrio penaeicida infection. Additionally, significant differences in some AMP transcript amounts are evidenced between control, non-selected shrimp line and the third generation breeding of shrimp selected... |
| Tipo: Text |
Palavras-chave: Real time PCR; Cysteine rich peptide; Crustin; Anti LPS factor; Lysozyme; Penaeidins; Immune response; Vibrio penaeicida; Penaeid; Decapoda; Crustacean. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4524.pdf |
| |
|
| |
|
|
| Goyard, Emmanuel; Goarant, Cyrille; Bachere, Evelyne; De Lorgeril, Julien; Mugnier, Chantal; Ansquer, Dominique; Broutoi, Francis; Brun, Pierre; Imbert, Frederic; Justou, Carole; Maillez, Jean-rene; Patrois, Jacques; Pham, Dominique; Peignon, Jean-marie. |
| The New-Caledonian shrimp industry is based on the controlled reproduction of the shrimp Litopenaeus stylirostris, a species which was introduced in the 80s. The major difficulty to which the industry has been faced for 10 years is the occurrence of the "syndrome 93", which corresponds to mortality phases when the temperature falls down in April-May-June. This mortality is associated to the pathogenic bacteria Vibrio penaecida and is expressed at different levels which are variable from year ta year and from pond to pond. No resistance to this pathology has been developed spontaneously. This is likely due to the protocole used to rear spawners, which does not allow to implement an efficient selective pressure at each generation An experimental selection... |
| Tipo: Text |
Palavras-chave: Amélioration génétique; P. styliroslris; Résistance; Syndrome 93; Lyzozyme; Genetic improvement; P. styliroslris; Résistance; Syndrome 93; Lyzozyme. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00109/22020/19643.pdf |
| |
|
|
| Goyard, Emmanuel; Ansquer, Dominique; Brun, Pierre; De Decker, Sophie; Dufour, Robert; Goarant, Cyril; Patrois, Jacques; Peignon, Jean; Pham, Dominique. |
| Selective breeding of shrimp for viral resistance is established for species like L. vannamei and L. stylirostris. However, selection for bacterial infection resistance is not documented. In New Caledonia, "Syndrome 93" is a vibriosis that affects cultured shrimps during the cool season with survival from 15 to 30%. Current practises for breeders rearing at low densities do not improve the resistance of the offsprings mainly because selection pressures for "Syndrome 93" are low. Even after the fifth generation, survival improvement is not significant. |
| Tipo: Text |
|
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/00117/22848/20658.pdf |
| |
|
|
| Lapegue, Sylvie; Bedier, Edouard; Goyard, Emmanuel; Degremont, Lionel; Baud, Jean-pierre; Gerard, Andre; Goulletquer, Philippe; Boudry, Pierre. |
| Two oyster species are currently present along the French coasts : the indigenous European flat oyster (Ostrea edulis), and the Pacific cupped oyster (Crassostrea gigas), that has been introduced from Japan since the beginning of the 70ies. The flat oyster successively suffered from two protozoan diseases during the 60ies and its production decreased from 20 000 tons/year by that time to 1 500 tons/year nowadays. Consequently, the oyster production is principally (99%) based upon the Pacific oyster species with approximately 150 000 tons/year among which 90% are grown from the natural spat. However, the hatchery production of this species is developing and was estimated to 400 to 800 millions spat in 2002. Moreover, strengthened relationships between... |
| Tipo: Text |
Palavras-chave: Growth; Selection; Genetic breeding; Genetic; Ostrea edulis; Crassostrea gigas; Oysters; Croissance; Sélection; Amélioration génétique; Génétique; Ostrea edulis; Crassostrea gigas; Huîtres. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2003/acte-3491.pdf |
| |
|
|
| Le Chanjour, Regis; Mazurie, Joseph; Goyard, Emmanuel; Martin, Anne-genevieve; Langlade, Aime; Tige, Gilbert; Le Mouroux, Guylaine; Le Coguic, Yvette. |
| Pendant l'été 1995, des mortalités d'huîtres creuses ont été observées sur une grande partie du littoral français et notamment en Bretagne. Pour cette région, un ensemble d'informations concernant ces mortalités a été recueilli au près d'organismes en contact direct avec les professionnels : IFREMER, les Affaires Maritimes et la Section Régionale Conchylicole de Bretagne sud. L'objectif de ce rapport est, à partir de quatre sources d'informations, de chiffrer ces mortalités dans les différents sites bretons et d'étudier les relations éventuelles avec différents paramètres tels que l'origine des huîtres, la technique d'élevage, le site d'élevage, etc... Des comparaisons sont faites avec les résultats d'enquête réalisée en Normandie (IFREMER... |
| Tipo: Text |
|
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/00107/21822/19409.pdf |
| |
|
|
| Baud, Jean-pierre; Le Bayon, Nicolas; Haure, Joel; Nourry, Max; Palvadeau, Hubert; Penisson, Christian; Naciri-graven, Yamama; Goyard, Emmanuel; Barre, Marc. |
| As of 1985, Ifremer set up a selection programme for resistance to the protozoan Bonamia ostreae in European flat oysters (Ostrea edulis). Two selection lines, L85 and L89, from the third and second generation, respectively, were produced with 17 and 21 different families. The experimental design also included a mixed line (L85 x L89) of seven families and a control line of five families from Quiberon broodstock maintained without selection pressure. |
| Tipo: Text |
Palavras-chave: Croissance; Génétique; Huîtres plates; Ostrea edulis. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/1997/acte-3245.pdf |
| |
|
|
| Goyard, Emmanuel; Lapegue, Sylvie; Cochennec, Nathalie; Baud, Jean-pierre; Langlade, Aime; Joly, Jean-pierre; Buestel, Dominique; Oheix, Jocelyne; Haure, Joel. |
| Le programme de sélection de l'huître plate a été initié en 1985 par des pathologistes de la Tremblade. La sélection ne portait que sur le seul critère de tolérance des huîtres plates au parasite Bonamia ostreae et correspondait plus à un outil pour étudier divers aspects de la parasitose qu'un un programme d'amélioration génétique visant la relance de la culture de l'huître plate. Dans le cadre du réseau REGEMO, ce programme a ensuite été repris par les généticiens de l'Ifremer : 1) rappel historique et définition d'un vocabulaire commun à l'ensemble des membres du réseau REGEMO. 2) Inventaire et bilan des opération menées ou en cours ( sur la dernière génération de sélection produite ne 1995, sur le matériel issu de cette génération et produit en 1997.... |
| Tipo: Text |
Palavras-chave: Génétique; Sélection génétique; Huître plate; Ostrea edulis; Génétique population; Croissance. |
| Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/00049/15977/13419.pdf |
| |
|
|
| Goyard, Emmanuel; Goarant, Cyrille; Ansquer, Dominique; Brun, Pierre; De Decker, Sophie; Dufour, Robert; Galinie, C; Peignon, Jean-marie; Pham, Dominique; Vourey, Elodie; Harache, Yves; Patrois, Jacques. |
| Two populations of the Latin American shrimp Penaeus (Litopenaeus)stylirostris domesticated in Hawaii and in New Caledonia were previously shown to be genetically differentiated and proven highly inbred. In New Caledonia, where different Vibriosis affect shrimp production and antibiotic use is banned in growing ponds, the Hawaiian population was introduced to increase the allelic variability available for local shrimp farmers and start a genetic improvement program. Growth and survival rates of the two pure populations and the two-way F-1-hybrids obtained by breeding Hawaiian animals with New Caledonian animals were assessed in several simple experiments (earthen ponds, floating cages and experimental infection challenges) during two years on two... |
| Tipo: Text |
Palavras-chave: Vibriosis; Survival; Growth; Penaeus Litopenaeus stylirostris; Shrimp; Cross breeding; Genetic improvement. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4316.pdf |
| |
|
|
| Beliaeff, Benoit; Chim, Liet; Della Patrona, Luc; Goyard, Emmanuel; Herlin, Jose; Labreuche, Yannick; Walling, Emilie; Ansquer, Dominique; Brun, Pierre; Castex, Mathieu; Coatanea, Denis; Courties, Claude; De Lorgeril, Julien; Dufour, Robert; Frappier, Julie; Goarant, Cyrille; Huber, Matthias; Lemaire, Pierrette; Lemonnier, Hugues; Loubersac, Lionel; Le Roux, Frederique; Lucas, Ronan; Patrois, Jacques; Peignon, Jean-marie; Pham, Dominique; Ramage, Yannick; Soulard, Benoit; Vic, Marlene; Vourey, Elodie; Wabete, Nelly. |
| New Caledonian shrimp farming feasibility studies started in the mid-seventies. Today ca. 2000 tons of Litopenaeus stylirostris, introduced in 1978, are semi-intensively produced each year. Since fifteen years, production has been impacted by two seasonal vibriosis, the “Summer” syndrome caused by Vibrio nigripulchritudo in relation to pond bottom and water column quality, and the “Winter Syndrome” caused by Vibrio penaeicida in relation to drastic temperature drops . With the ambition of elucidating processes possibly leading to mortality outbreaks in ponds, Ifremer has been conducting a research program since 2003 under the DESANS project (2003-2006) and the present DEDUCTION project, equally funded by the South and North Provinces and by the Government... |
| Tipo: Text |
Palavras-chave: Shrimp farming; Technical and scientific support; Vibriosis; Water quality; Pathology; Ecophysiology; Genetics; Zoosanitary monitoring and procedures; Multifactorial and multidisciplinary approach. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00143/25438/23591.pdf |
| |
|
|
| Goyard, Emmanuel; Goarant, Cyrille; Brun, Pierre; Herlin, Jose; Pham, Dominique; Beliaeff, Benoit; Harache, Yves; Loubersac, Lionel; Patrois, Jacques. |
| Shrimp farming in New Caledonia relies on the culture of a domesticated strain of Litopenaeus stylirostris introduced from Mexico at a time when genetic principles were of little or no consideration. Since then, advances in agriculture and for some aquatic species of importance led caledonian shrimp farmers to reconsider the appropriateness of a genetic improvement strategy adapted to local biotechnical and economical constraints. This questioning involves many different and interrelated aspects: scientific and technologic (genetics, biosecurity, quarantine, ), economic and organizational (financing, diffusion of genetic improvement) and pedagogic (awareness of farmers). Local institutions, producers associations, research centre and sanitary services... |
| Tipo: Text |
|
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00198/30879/29247.pdf |
| |
|
|
| Arnaud, Sophie; Vonau, Vincent; Rouxel, Catherine; Bonhomme, Francois; Prou, Jean; Goyard, Emmanuel; Boudry, Pierre. |
| In order to study further the genetic structure of the pearl oyster Pinctada margaritifera in French Polynesia with a special consideration for the sampling scale, we analyzed or re-analyzed sets of data based on nuclear DNA markers obtained at different spatial scales. At a large scale (several 1,000 km), the remote Marquesas Islands were confirmed to be significantly differentiated from Tuamotu-Gambier and Society archipelagos, with a marked difference however for the two main islands that are different from each other. At a medium scale (several 10 to several 100 km), overall homogeneity was observed within and between these two archipelagos, with some exceptions. This could be attributed both to large-scale larval dispersal and to human-driven spat... |
| Tipo: Text |
Palavras-chave: Population genetics; Polynesia; Bivalve; Pearl oyster; Benthic organisms; Sampling strategy; Genetic patchiness. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4960.pdf |
| |
|
|
| Vonau, Vincent; Rouxel, Catherine; Saulnier, Denis; Cochennec-laureau, Nathalie; Nedelec, Georges; Goyard, Emmanuel. |
| The tropical seabass Lates calcarifer was introduced in Tahiti in 1984 and then was domesticated without other introduction. Three successive generations have been obtained in captivity. Tissue samples of the 38 animaIs which represent the total Tahitian broodstock were preserved in alcohol to be genotyped with four microsatellite markers (Yue et al., 2001). Three of four described markers were successfully transferred to the laboratory of genetics of Tahiti (marker LcaM01, LcaM02, LcaM03), as the revelation technology available locally did not allow the use of LcaM04 in routine. The results show that the genetic diversity of the tahitian broodstock is not equivalent of the one of the species, which could be explained by the small size of the founder... |
| Tipo: Text |
Palavras-chave: Lates calcarifer; Marqueurs microsatellites; Reproducteurs; Variabilité génétique; Lates calcarifer; Microsatellite markers; Breeding stock; Genetic diversity. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00142/25300/23372.pdf |
| |
|
|
| Arnaud, Sophie; Goyard, Emmanuel; Prou, Jean; Vonau, Vincent; Bonhomme, Francois; Boudry, Pierre. |
| Exploitation of the pearl oyster Pinetada margaritifera, which has developed in French Polynesia over the last twenty years, is based mainly on the collection of natural spat. Recruitment is highly variable in space and time and so spat is very often transferred by the farmers between atolls or even between archipelagos. In previous studies, anonymous nuclear markers demonstrated that This development has coincided with a genetic homogenisation of the wild stocks since the 1980s. This suggests a high level of reproductive success on farms, which is likely to be due to the high density of animaIs when compared to the density in the wild. We used the same markers to show that the level of genetic variability observed on farms is not significantly different... |
| Tipo: Text |
Palavras-chave: French Polynesia; Genetic diversity; Spat; Pinctada margaritifera; Pearl oyster; Polynésie française; Diversité génétique; Naissain; Pinctada margaritifera; Huître perlière. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-3822.PDF |
| |
|
|
| Barre, Marc; Naciri, Yamama; Boudry, Pierre; Goyard, Emmanuel; Launey, Sophie; Cochennec, Nathalie; Heurtebise, Serge; Ledu, Christophe; Phelipot, Pascal; Gerard, Andre. |
| The Aquaculture and Pathological Genetics (GAP) laboratory at La Tremblade has been monitoring three populations of European flat oyster since 1985 or 1989 under selection for higher survival rates in the presence of the parasite Bonamia ostrea. One selection cycle (1985 population) or two (1989 populations) were carried out by mass selection by placing the oysters for several years in a highly infested zone, and then harvesting spawns from survivors. |
| Tipo: Text |
Palavras-chave: Huîtres plates; Génétique; Selection génétique; Ostrea edulis. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/1997/acte-3244.pdf |
| |
|
| |
|
| |
|
|
| Bedier, Edouard; Baud, Jean-pierre; Cochennec, Nathalie; Cornette, Florence; Gerard, Andre; Goyard, Emmanuel; Joly, Jean-pierre; Kopp, Joel; Langlade, Aime; Le Coguic, Yvette; Mazurie, Joseph; Nourry, Max. |
| The European flat oyster Ostrea edulis has been considered as the traditional French oyster for a very long time and has now nearly disappeared from our farms, as a consequence of the two successive epizootic of the Marteilia refringens parasite and Bonamia ostreae. The actual quasi monoculture of Crassostrea gigas has made necessary the search for a diversification in oyster culture, including the search for a new start of the indigenous flat oyster culture. The Ifremer has been conducting parallel works since 1985 in order to better understand the biology of the parasite as well as to try and select different lines of flat oyster resistant to Bonamia ostreae. |
| Tipo: Text |
Palavras-chave: Bonamia ostrea; Huître plate; Sélection Génétique; Ostrea edulis. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/2001/acte-3274.pdf |
| |
|
|
| Fleury, Pierre-gildas; Goyard, Emmanuel; Mazurie, Joseph; Claude, Serge; Bouget, Jean-francois; Langlade, Aime; Le Coguic, Marie-jo. |
| The network IFREMER/REMORA has watched every year, since 1993, from February to December, mortality, growth and quality criteria of two oyster class-size ("juveniles" of the first-year c1ass and "adults" of the second year c1ass), distributed among various stations of the French oyster areas. This has provided a quite standard and simple annual assessment of the rearing results, generally tallied with professional observations. From year to year, data series have been obtained, from which mean values (references), chronological trends or spatial differences can be analysed. Results in Brittany, from 1993 to 1998, show that, in a "normal" year, 30 g oysters grow to 60-80 g at the end of the year, with a mortality rate of 10-15%. Mortality occures mainly in... |
| Tipo: Text |
Palavras-chave: REMORA; Bretagne; Huître creuse; Crassostrea gigas; Mortalité; Croissance; Qualité; Polydora; REMORA; Brittany (France); Gigas oyster; Crassostrea gigas; Mortality; Growth; Quality; Polydora. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/00113/22386/20081.pdf |
| |
|
|
| Soletchnik, Patrick; Goyard, Emmanuel; Thouard, Emmanuel. |
| L'aquaculture en Martinique commence dans les années 1970 avec le transfert technologique de l'élevage de la chevrette : Macrobrachium rosenbergii. Au début des années 1980, le CNEXO en collaboration avec une association régionale (ADAM) travaille aux Antilles à la sélection d'espèces tropicales de poissons. Cette étude s'inserre alors dans un programme international de sélection d'espèces tropicales, coordonné par le Centre Océanologique du Pacifique. En début d'année 1987, après une étude prospective d'investigation aux USA, L'IFREMER Martinique initie le programme d'étude de la mise au point technique de l'élevage de l'ombrine en conditions intensives ... |
| Tipo: Text |
|
| Ano: 1991 |
URL: https://archimer.ifremer.fr/doc/00509/62116/66309.pdf |
| |
| Registros recuperados: 43 | |
|
|
|
