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Registros recuperados: 28
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A relationship between antimicrobial peptide gene expression and capacity of a selected shrimp line to survive a Vibrio infection ArchiMer
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
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A white spot disease-like syndrome in the Pacific blue shrimp (Litopenaeus stylirostris) as a form of bacterial shell disease ArchiMer
Goarant, Cyrille; Brizard, Raphael; Marteau, Anne-laure.
In May 1997, some white lesions evoking the white spot syndrome disease were observed in Litopenaeus stylirostris broodstock in New Caledonia. The occurrence of these lesions was neither associated with mortality, nor with histological evidence of white spot syndrome baculovirus (WSBV), The evidence suggests that these lesions result from a form of bacterial disease and are associated with an increased bacterial flora on the outer surface of the cuticle, as well as an increased incidence throughout the molt cycle. A microscopic observation of these lesions allows them to be differentiated from WSBV-associated lesions.
Tipo: Text Palavras-chave: New Caledonia; White spot syndrome; Aquaculture; Pathogenic bacteria; Shrimp culture; Crustaceans; Diseases; Litopenaeus stylirostris.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/2000/publication-373.pdf
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Acquisition of susceptibility to Vibrio penaeicida in Penaeus stylirostris postlarvae and juveniles ArchiMer
Goarant, Cyrille; Regnier, France; Brizard, Raphael; Marteau, Anne-laure.
Vibriosis is a major disease problem in shrimp aquaculture, affecting all developmental stages, from larvae in hatchery tanks to juveniles and broodstock in growout ponds. However, bacterial strains responsible for vibriosis in the successive stages are usually considered to be different, and virulence specificity has been reported both at the species and at the stage levels. The so-called « Syndrome 93 » is a seasonal juvenile vibriosis caused by Vibrio penaeicida which affects Penaeus stylirostris in growout ponds and broodstock tanks in New Caledonia. This pathology does not cause any mortality in hatchery or nursery phases. An experimental infection design using balneation of postlarvae and early juveniles in V. penaeicida suspensions was used to...
Tipo: Text Palavras-chave: Penaeus stylirostris; Vibrio sp.; Diseases and their control crustaceans.
Ano: 1998 URL: https://archimer.ifremer.fr/doc/1998/publication-383.pdf
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Amélioration génétique expérimentale de la crevette d'élevage de Nouvelle-Calédonie : Sélection d'une population de L. stylirostris résistante à la bactérie pathogène Vibrio penaeicida. Rapport final pour le Ministère de l'Outre-Mer ArchiMer
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
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Arbitrarily primed PCR to type Vibrio spp. Pathogenic for shrimp ArchiMer
Goarant, Cyrille; Merien, Fabrice; Berthe, Franck; Mermoud, Isabelle; Perolat, Philippe.
A molecular typing study on Vibrio strains implicated in shrimp disease outbreaks in New Caledonia and Japan was conducted by using AP-PCR (arbitrarily primed PCR). It allowed rapid identification of isolates at the genospecies level and studies of infraspecific population structures of epidemiological interest. Clusters identified within the species Vibrio penaeicida were related to their area of origin, allowing discrimination between Japanese and New Caledonian isolates, as well as between those from two different bays in New Caledonia separated by only 50 km. Other subclusters of New Caledonian V. penaeicida isolates could be identified, but it was not possible to link those differences to accurate epidemiological features. This contribution of AP-PCR...
Tipo: Text Palavras-chave: Vibrio spp.; Shrimp; Molecular typing.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/1999/publication-2734.pdf
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Biological, physiological, immunological and nutritional assessment of farm-reared Litopenaeus stylirostris shrimp affected or unaffected by vibriosis ArchiMer
Mugnier, Chantal; Justou, Carole; Lemonnier, Hugues; Patrois, Jacques; Ansquer, Dominique; Goarant, Cyrille; Le Coz, Jean-rene.
Shrimp aquaculture in New Caledonia is subject to seasonal mortalities during grow-out due to highly virulent Vibrio nigripulchritudo (Vn). To understand the mechanisms affecting shrimp resistance and leading to significant mortality, a shrimp ecophysiology and immunology survey was conducted on two farms, the first considered as a "control" farm (HC), the second affected by the disease (DF). Mortality observed during the survey at DF started 50 days after stocking and was typical of this disease. The main observations regarding shrimp were: (a) growth was not affected by the disease and was faster in the DF than in the HC pond; (b) disease did not affect one sex more than the other, or a specific part of the population in terms of weight; (c) the physical...
Tipo: Text Palavras-chave: Vibriosis; Penaeid shrimp; Field survey; Physiology; Immunology; Nutritional status.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00176/28764/27567.pdf
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Combined effect of exposure to ammonia and hypoxia on the blue shrimp Litopenaeus stylirostris survival and physiological response in relation to molt stage ArchiMer
Mugnier, Chantal; Zipper, Etienne; Goarant, Cyrille; Lemonnier, Hugues.
The effect of ambient ammonia, hypoxia and combination of both on survival and the physiological and immunological response of the blue shrimp Litopenaeus stylirostris in relation to molt stage was studied. Shrimp were submitted to 44.0-71.5 mg 1(-1) total ammonia-N corresponding to 2.0 mg 1(-1) unionized ammonia NH3-N and/or to 1.5 mg O-2 1(-1) (4.3 kPa) for 24 hours. Survival was recorded and the molt stages of both dead and surviving shrimp determined. Only shrimp in intermolt and premolt stages were sampled for analysis of haemolymph. Haemolymph was assayed for osmoregulatory capacity (OC), magnesium ion (Mg2+), calcium ion (Ca2+), total proteins, oxyhaemocyanin, lactate, glucose and total haemocyte count (THC). Low mortalities were recorded for...
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Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-4092.pdf
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Correlation between detection of a plasmid and high-level virulence of Vibrio nigripulchritudo, a pathogen of the shrimp Litopenaeus stylirostris ArchiMer
Reynaud, Yann; Saulnier, Denis; Mazel, D; Goarant, Cyrille; Le Roux, F.
Vibrio nigripulchritudo, the etiological agent of Litopenaeus stylirostris summer syndrome, is responsible for mass mortalities of shrimp in New Caledonia. Epidemiological studies led to the suggestion that this disease is caused by an emergent group of pathogenic strains. Genomic subtractive hybridization was carried out between two isolates exhibiting low and high virulence. Our subtraction library was constituted of 521 specific fragments; 55 of these were detected in all virulent isolates from our collection (n = 32), and 13 were detected only in the isolates demonstrating the highest pathogenicity (n = 19), suggesting that they could be used as genetic markers for high virulence capacity. Interestingly, 10 of these markers are carried by a replicon of...
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Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-4523.pdf
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Cross breeding of different domesticated lines as a simple way for genetic improvement in small aquaculture industries: Heterosis and inbreeding effects on growth and survival rates of the Pacific blue shrimp Penaeus (Litopenaeus) stylirostris ArchiMer
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
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DEDUCTION : A research project for shrimp farming sustainability in New-Caledonia ArchiMer
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
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Emergence de maladies chez les organismes d'intérêt aquacole : quelques scénarios illustrés d'exemples ArchiMer
Saulnier, Denis; Reynaud, Yann; Arzul, Isabelle; Miossec, Laurence; Le Roux, Frédérique; Goarant, Cyrille.
According to the world organisation for animal health (OIE) an emerging disease is defined as a recently admitted serious illness, whose aetiology can, or not, have already been established, and which is likely to be propagated within a population or between populations, for example at the time of international exchanges of aquatic animals and/or products of aquatic animals. Even though the emerging diseases that affect human health have been much studied, those which affect marine organisms and species of aquaculture interest in particular are poorly documented. By restricting emergence to only infectious diseases, we aim at presenting in a non-exhaustive way some scenarios of the emergence of the diseases of aquacultured species by illustrating them with...
Tipo: Text Palavras-chave: Cyprinus carpio; Ostrea edulis; Bonamia ostreae; Peneides; Vibrio nigripulchritudo; Herpesvirus; Agent pathogène.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-2980.pdf
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Epidémiologie et facteurs de virulence des bactéries du genre Vibrio responsables de mortalité de crevettes d'élevage en Nouvelle-Calédonie. Pespectives de lutte ArchiMer
Goarant, Cyrille.
La Nouvelle-Calédonie présente de nombreux atouts pour la pénéiculture. Le ralentissement brutal de son développement en 1993 s'explique par l'émergence d'une pathologie saisonnière qui affecte les crevettes juvéniles en grossissement, mettant en cause des bactéries du genre Vibrio et qui a reçu le nom de Syndrome 93. Vibrio penaeicida et V. nigripulchritudo sont deux espèces au pouvoir pathogène particulièrement élevé qui affectent les élevages. Une étude de typage moléculaire a permis de préciser leur épidémiologie et de proposer quelques conseils d'ordre zoosanitaire. Un suivi épidémiologique par amplification génique est en cours pour V. penaeicida, qui montre l'importance des facteurs écologiques dans l'apparition des épisodes pathologiques. La...
Tipo: Text Palavras-chave: Litopenaeus stylirostris; Vibrio penaeicida; Epidémiologie; Pathogénicité; Nouvelle-Calédonie.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/00444/55510/57060.pdf
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Evaluación de los parámetros biológicos, fisiológicos, inmunológicos y nutricionales en camarones Litopenaeus stylirostris afectados por vibriosis ArchiMer
Mugnier, Chantal; Justou, Carole; Lemonnier, Hugues; Patrois, Jacques; Ansquer, Dominique; Goarant, Cyrille; Lecoz, Jean-rené.
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Ano: 2013 URL: http://archimer.ifremer.fr/doc/00354/46555/46366.pdf
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Expériences sur l'influence des sédiments du bassin d'élevage sur la physiologie de Penaeus stylirostris. Rapport des travaux menés du 26 novembre au 7 décembre 1955 à la Station Saint Vincent ArchiMer
Cochard, Jean-claude; Goarant, Cyrille; Boglio, Eric; Lemonnier, Hugues.
The influence of the soil quality of culture pond on the physiological state of Penaeus stylirostris reared in earthen shrimp pond in New Caledonia was investigated by the measurement of the osmoregulatory capacity and magnesium hemolymph concentration of samples of 20 of these shrimp captured in the pond and maintained for 24 or 48h in cages laid on the bottom. A first experiment was affected by the occurrence of a pathology caused by Vibrio penaeicida probably due to initial handling stress. The second experiment showed that the osmoregulatory capacity is depresssed as a function of the soil quality : the more it is reduced the more the depression is important.
Tipo: Text Palavras-chave: Crevettes; Penaeus; P. stylirostris; Nouvelle Calédonie; Capacité osmorégulatrice; Stress; Sédiment; Shrimp culture; Penaeus; P. stylirostris; New Caledonia; Osmoregulatory capacity; Stess; Soil.
Ano: 1996 URL: http://archimer.ifremer.fr/doc/00426/53779/54664.pdf
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Genetic improvement strategy in small aquaculture industries : the new caledonian shrimp experience ArchiMer
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...
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Ano: 2009 URL: http://archimer.ifremer.fr/doc/00198/30879/29247.pdf
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Identification of a plasmid associated with virulence in Vibrio nigripulchritudo, a pathogen of the shrimp Litopenaeus stylirostris ArchiMer
Reynaud, Yann; Saulnier, Denis; Mazel, Didier; Goarant, Cyrille; Le Roux, Frédérique.
Tipo: Text Palavras-chave: Pathogenic vibrios; Pathology; Litopeneaus stylirostris; Vibrio nigripulchritudo.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/acte-3432.pdf
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Influence of sediment characteristics on shrimp physiology: pH as principal effect ArchiMer
Lemonnier, Hugues; Bernard, E; Boglio, E; Goarant, Cyrille; Cochard, Jean-claude.
Penaeid shrimp reared in earthen ponds are exposed to sediment, which can, in some instances, induce a stress. In seawater, the osmoregulatory capacity (hyporegulation) is a useful tool to compare the physiological condition of shrimp exposed to various stressors. By keeping some shrimp in cages at different locations of a single pond heterogeneous in terms of sediment quality, it was possible, using osmotic pressure (OP), to identify some locations where the stress was maximum and some others where it was minimum. Simultaneously, sediment samples were taken and analysed in order to evaluate some physico-chemical parameters that could be related to the stress observed in the shrimps kept in the cages. This approach allowed to show a significant positive...
Tipo: Text Palavras-chave: PH; Sediments; Stress; Osmotic pressure; Shrimp physiology.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/publication-1866.pdf
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Molecular epidemiology of Vibrio nigripulchritudo, a pathogen of cultured penaeid shrimp (Litopenaeus stylirostris) in New Caledonia ArchiMer
Goarant, Cyrille; Reynaud, Yann; Ansquer, Dominique; De Decker, Sophie; Saulnier, Denis; Leroux, Frederique.
A collection of 57 isolates of Vibrio nigripulchritudo from either diseased or healthy shrimp and from shrimp farms environment was studied in order to gain a better understanding of the epidemiology of this pathogen, notably isolated from two distinct shrimp disease complexes. Molecular typing using two different techniques, arbitrarily primed PCR (AP-PCR) and multi-locus sequence typing (MLST), studied together with experimental pathology data allowed a relevant epidemiological insight into this possibly emerging pathogen. Additionally, results obtained with the two molecular typing techniques were congruent and allowed discriminating the strains associated with the "Summer Syndrome" from strains isolated from other contexts, especially the other shrimp...
Tipo: Text Palavras-chave: Virulence; Epidemiology; Typing; MLST; AP PCR; Mariculture; Vibriosis.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-1913.pdf
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Principios y Problemas Involucrados en la Evaluación de Inmunoestimulantes en Juveniles de Camarón. ArchiMer
Le Moullac, Gilles; Phillip De Laborie, Loic; Saulnier, Denis; Goarant, Cyrille; Dehasque, Marleen.
Anderson (1992) y Raa (1996) han escrito impresionantes críticas acerca del uso de inmunoestimulantes en acuacultura. La mayoría de los trabajos citados se refieren principalmente al cultivo de peces y pocos acerca del camarón. Así que este trabajo está enfocado al camarón y las pocas pruebas publicadas. Varios de los inmunoestimulantes y su manera de actuar sobre el sistema inmune en camarones se describen brevemente, así como los métodos usados para administrar las sustancias inmunoestimulatorias para camarón. La dificultad para experimentar en este campo está señalada con algunos ejemplos.
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Ano: 2000 URL: http://archimer.ifremer.fr/doc/00029/14011/11197.pdf
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Quantification of Vibrio penaeicida, the etiological agent of Syndrome 93 in New Caledonian shrimp, by real-time PCR using SYBR Green I chemistry ArchiMer
Goarant, Cyrille; Merien, F.
Shrimp farming is a small but growing industry in New Caledonia. Since 1993, "Syndrome 93" has been affecting New Caledonian shrimp farming industry every cold season, causing severe epizootic mortalities in grow-out ponds and significant losses. Highly pathogenic strains of Vibrio penaeicida are considered the etiological agent of the disease in Litopenaeus stylirostris. On one hand, studies demonstrated that healthy shrimp may carry V penaeicida for weeks with a high overall prevalence, regardless of any seasonal pattern or temperature conditions. On the other hand, larvae are free of V penaeicida and are also resistant to experimental infection. V penaeicida is frequently detected in incoming water pumped from the bays, which was shown, by a molecular...
Tipo: Text Palavras-chave: Vibriosis; Vibrio; Real time PCR; Quantification; Mariculture; Extraction techniques.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-1903.pdf
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