alexa Isolation and Selection of Potentially Beneficial Autochthonous Bacteria for Piaractus mesopotamicus Aquaculture Activities
ISSN: 2155-9821

Journal of Bioprocessing & Biotechniques
Open Access

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Research Article

Isolation and Selection of Potentially Beneficial Autochthonous Bacteria for Piaractus mesopotamicus Aquaculture Activities

Marcos Gabriel Guidoli1,3, Juan José Santinón1, Sergio Enrique Pasteris2, Sebastián Sánchez1 and María Elena Fátima Nader-Macías3*
1Department of Veterinary Sciences, Institute of Northeast Ichthyology (INICNE), National University of the Northeast, Corrientes, Argentina
2Superior Institute of Biological Research (INSIBIO-CONICET), San Miguel de Tucuman, Argentina
3Reference Center Lactobacilli (CERELA-CONICET), San Miguel de Tucuman, Argentina
Corresponding Author : María EF Nader-Macías
Reference Center Lactobacilli (CERELA-CONICET)
PC: T4000ILC, St Chacabuco 145
San Miguel de Tucuman, Argentina
Tel: +54 381 4310465
Fax: +54 381 4005600
E-mail: [email protected]
Received August 23, 2015; Accepted September 11, 2015; Published September 16, 2015
Citation: Guidoli MG, Santinón JJ, Pasteris SE, Sánchez S, Nader-Macías MEF (2015) Isolation and Selection of Potentially Beneficial Autochthonous Bacteria for Piaractus mesopotamicus Aquaculture Activities. J Bioprocess Biotech 5:254 doi:10.4172/2155-9821.1000254
Copyright: © 2015 Guidoli MG, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Piaractus mesopotamicus is the most produced specie in Argentinian fish culture with an annual production of 2,017 tons. The high demands of specimens generated a deficit of larvae, juveniles and sexually mature adults. The high stress conditions and the incidence of diseases had intensified this deficit. Probiotics are proven to increase survival and growth rates in aquaculture. The first step in the design of a putative probiotic is the selection of adequate microorganisms to boost fish health. Lactic Acid Bacteria and Bacillus are generally accepted as probiotics in aquaculture. In this work we obtained 522 isolates from different anatomical parts of P. mesopotamicus, with a total of 30 lactic acid bacteria (LAB) and 8 Bacillus strains submitted for the evaluation of their beneficial properties. Only eight of these strains were selected for further “in vivo” assays based on following criteria: production of inhibitory metabolites and biosurfactants, screening of antagonistic activity against foodborne and pathogenic microorganisms, ability to emulsify polar solvents and compatibility between strains. All selected microorganisms were identified by sequencing 16S RNA gene. Pure cultures of all strains herein studied are preserved in Centro de Referencia de Lactobacilos (CERELA-CONICET) and Laboratorio de Sanidad Animal of the Estación Experimental Agropecuaria Rafaela, Instituto Nacional de Tecnología Agropecuaria (INTA) culture collections.

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