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Diseases of Aquatic Organisms

    DAO prepress abstract   -  DOI: https://doi.org/10.3354/dao03423

    Use of silver nanoparticles to control Vibrio fluvialis in cultured angelfish Ptephyllum scalare

    Julio César Meneses-Márquez, Aida Hamdan-Partida*, María del Carmen Monroy-Dosta, Jorge Castro-Mejía, Abraham Faustino-Vega, Elizabeth Soria-Castro, Jaime Bustos-Martínez

    *Corresponding author:

    ABSTRACT: Currently, nanoparticles have multiple applications, among them is their use as antimicrobial agent in aquaculture. The objective of this work was to determine the antibacterial effect of silver nanoparticles (AgNPs) against Vibrio fluvialis during angelfish Ptephyllum scalare breeding. AgNPs were synthetized through chemical reduction and characterized by UV-Vis and infrared spectroscopy. The determined particle size was from 60 to 170.8 nm. Scanning electron microscopy (SEM) revealed cubic and spherical forms. A minimal inhibitory concentration (MIC) of 222.5 ppm was determined, as well as inhibition halos between 8.66 mm and 14.3 mm. Inhibition of V. fluvialis growth was observed at contact with AgNPs. An 88% survival of infected fishes was obtained when treated with AgNPs, in contrast to 100% mortality when not treated, No damage to internal or external organs was observed in fishes when using AgNPs. We conclude that AgNPs exert an antimicrobial effect against V. fluvialis, which represents a new alternative to control diseases caused by this microorganism in P. scalare cultures.