Abstract
Simple SummaryAquaculture development is limited by several diseases associated with bacteria that have developed resistance to antibiotics. In this context, new treatment alternatives are necessary. The aim of the present study was to evaluate the in vitro antibacterial effects of Salix babylonica hydro-alcoholic extract against some bacteria that affect rainbow trout (Oncorhynchus mykiss) and tilapia (Oreochromis spp.). The results indicate that Salix babylonica hydro-alcoholic extract has an antibacterial effect and could be an alternative treatment in diseases caused by microorganisms resistant to drugs in aquaculture.Aquaculture development is limited by bacteria associated with several diseases; antibiotics are used for the treatment of these affections, but bacteria have developed resistance to these drugs. It is important to develop effective treatments that allow the production of antibiotic-free food. The aim of the present study is to evaluate the in vitro antibacterial effects of Salix babylonica hydro-alcoholic extract (SbHE) against Aeromonas hydrophila, Listonella anguillarum, Edwarsiella tarda, and Streptococcus iniae, bacteria that affect Oncorhynchus mykiss and Oreochromis spp. production. SbHE was obtained through the maceration technique. Reference strains were used and their sensitivity to antibiotics was determined. Minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC) of SbHE were determined. Results showed that three of four evaluated bacteria were multidrug resistant, except S. iniae. SbHE showed antibacterial activity against all bacteria. Results indicate an MIC of 1.56 to 25 mg/mL and an MBC of 3.12 to 100 mg/mL. The greatest inhibitory activity occurred against L. anguillarum obtaining a MIC of 1.56 mg/mL and an MBC of 3.12 mg/mL. Results indicate that SbHE has bactericidal activity against A. hydrophila, L. anguilalurm, and S. iniae as well as bacteriostatic activity against E. tarda and could be an alternative treatment against these bacteria.
Highlights
Aquaculture is an agropecuary activity with growth potential primarily within the commercial alimentary industry, with a world production of 80 million tons annually [1]
In accordance with the aforementioned, the aim of the present study was to evaluate the antibacterial effect of Salix babylonica hydro-alcoholic extract (SbHE) against A. hydrophila, L. anguilalurm, E. tarda, and S. iniae, bacteria that affect rainbow trout (Oncorhynchus mykiss) and tilapia (Oreochromis spp.) production
A. hydrophila, L. anguillarum, E. tarda, and S. iniae have been linked with mortality ranges of 50% to 100% in aquaculture production systems of O. mykiss and Oreochromis spp
Summary
Aquaculture is an agropecuary activity with growth potential primarily within the commercial alimentary industry, with a world production of 80 million tons annually [1]. It has been observed that aquatic organisms are more susceptible to infectious agents, when density is increased, and water as well as food quality is decreased [3] Infectious diseases, mainly those associated with bacteria, represent a great challenge in fish farming, since they affect fish growth, increase mortalities, and require treatment, which generate significant economic losses [4]. The use of chemotherapeutics and antibiotics are undesirable since they accumulate in the muscles, contaminate aquatic environments, stimulate the development of bacterial resistance, and increase production costs. As such, their use has been restricted in some countries [5,6,7,8]. Used antibiotics in the treatment of bacterial infections in aquaculture are enrofloxacin, florfenicol, oxytetracycline, chlortetracycline, ciprofloxacin, norfloxacin, oxolinic acid, perfloxacin, sulfamethazine, gentamicin, and tiamulin [9,10]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
