Characterization of the probiotic strain Vagococcus fluvialis in the protection of European sea bass (Dicentrarchus labrax) against vibriosis by Vibrio anguillarum

Aquaculture is one of the main sources of income in many countries worldwide. Intensive farms are often affected by different infectious diseases that can decrease their final production. To control this situation, several antibiotics are frequently used with known environmental consequences. The ai...

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Bibliographic Details
Published in:Veterinary Microbiology
Main Authors: Sorroza, L., Acosta, F., Román, L., Grasso, V., Padilla Castillo, Daniel Fermín, Vega, Judit, Real Valcárcel, Fernando
Other Authors: 49664048200, 7005088705, 56269311600, 50661926900, 23060092500, 35068773000, 7005397318, 6999849, 1039753, 878226, 6180345, 345205, 7394693, 29464210, WOS:Sorroza, L, WOS:Padilla, D, WOS:Acosta, F, WOS:Roman, L, WOS:Grasso, V, WOS:Real, F, BU-VET
Format: Article in Journal/Newspaper
Language:Spanish
Published: 0378-1135 2012
Subjects:
310907 Patología
Lactic-Acid Bacteria
Fish Pathogens
Rainbow-Trout
Farmed Fish
Adhesion
Aquaculture
Mucus
Mechanisms
Diseases
Turbot
Online Access:http://hdl.handle.net/10553/47241
https://doi.org/10.1016/j.vetmic.2011.09.013
Description
Summary:Aquaculture is one of the main sources of income in many countries worldwide. Intensive farms are often affected by different infectious diseases that can decrease their final production. To control this situation, several antibiotics are frequently used with known environmental consequences. The aim of this study was to analyze different bacterial strains isolated from of gilthead sea bream, sea bass, sole and meagre guts, for use as probiotics in aquaculture. The strains were evaluated in vitro through various mechanisms of selection, such as the production of antagonistic effects against pathogens, production of antibacterial substance, adhesion to the intestinal mucus, competition for nutrients or binding site, and growth in intestinal mucus. A total of 50 bacterial strains were analyzed and only one showed excellent in vitro results for consideration as a candidate to be analyzed in vivo. The strain, identified as Vagococcus fluvialis, showed good protection against Vibrio anguillarum 975-1 in vivo in the experimental challenge, showing a relative percent survival of 42.3% higher than positive control group. Therefore, in conclusion we consider this strain to be a good candidate for use as a future probiotic in aquaculture. (C) 2011 Elsevier B.V. All rights reserved. 373 369 1,437 3,127 Q1 Q1 SCIE

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