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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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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 external ammonia and molt stage on the blue shrimp Litopenaeus stylirostris physiological response ArchiMer
Mugnier, Chantal; Justou, Carole.
The effect of ambient ammonia and molt stage on the physiological response of the blue shrimp Litopenaeus stylirostris was studied. Shrimps were submitted to 54.6 mg l(-1) ammonia-N (1.76 mg l(-1) NH3-N) for 24 h. Only shrimps in stages C, D-0, D-1 and D-2 were used for the analysis. Haemolymph was assayed for osmoregulatory capacity (OC), magnesium ion (Mg ion), total proteins, oxyhaemocyanin, lactate and glucose. Molt stage had an effect on OC, Mg ion and total proteins in control shrimps, and on OC, Mg ion and lactate in treated animals. Ammonia treatment decreased OC and lactate, and increase Mg ion concentration in haemolymph, for all molt stages. It decreased significantly total proteins and oxyhaemocyanin for stages D-1 and D-2, and increased...
Tipo: Text Palavras-chave: Stress; Peneid shrimp; Molt stage; Litopenaus stylirostris; Haemolymph constituents; Ammonia.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/publication-371.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.
Tipo: Text
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00354/46555/46366.pdf
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