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Pathogenic threats and probiotic use in larviculture of the scallop, Pecten maximus 5
Kesarcodi-watson, Aditya; Miner, Philippe; Nicolas, Jean-louis; Asmani, Katia; Robert, Rene.
During a series of experiments, bacteriological elements in scallop larval rearing were investigated: larvae susceptibility to pathogens as a function of their age, and the use of probiotic bacteria during larviculture. Younger larvae (d5 PF) were highly more susceptible to pathogenic-challenge than their older siblings, which were challenged at an older age (d15 PF). A challenge with 104 CFU mL−1 of V. pectenicida killed 100% of d5 PF larvae 7 days following challenge, yet killed only 9% of d15 PF larvae 9 days following challenge. Use of the probiotics Phaeobacter gallaeciensis, Alteromonas macleodii 0444 and Neptunomonas sp. 0536, provided for larger larvae, a high yield of competent larvae and, perhaps more importantly, protection against...
Tipo: Text Palavras-chave: Scallop; Pecten maximus; Probiotics; Alteromonas macleodii; Neptunomonas; Phaeobacter.
Ano: 2016 URL: https://archimer.ifremer.fr/doc/00210/32153/30900.pdf
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Structural data on a bacterial exopolysaccharide produced by a deep-sea Alteromonas macleodii strain 5
Le Costaouec, Tinaig; Cerantola, Stephane; Ropartz, D.; Ratiskol, Jacqueline; Sinquin, Corinne; Colliec-jouault, Sylvia; Boisset, Claire.
Some marine bacteria collected around deep-sea hydrothermal vents are able to produce, in laboratory conditions, complex and innovative exopolysaccharides. In a previous study, the mesophilic strain Alteromonas macleodii subsp. fijiensis biovar deepsane was collected on the East Pacific Rise at 2600m depth. It was isolated from a polychaete annelid Alvinella pompejana and is able to synthesise and excrete the exopolysaccharide deepsane. Biological activities have been screened and some protective properties have been established. Deepsane is commercially available in cosmetics under the name of Abyssine (R) for soothing and reducing irritation of sensitive skin against chemical, mechanical and UVB aggression. This study presents structural data for this...
Tipo: Text Palavras-chave: Bacterial exopolysaccharide; Alteromonas macleodii; Structure determination; NMR spectroscopy; Mass spectrometry.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00095/20620/18536.pdf
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