TY - JOUR AU - AL-Shammari, Rana H.H. AU - Alsaady, Majida Hadi Mahdi AU - Ali, Shaimaa Satae M. PY - 2022/10/25 Y2 - 2024/03/29 TI - The efficiency of biosynthesized Zinc oxide nanoparticles by Fusarium sp. against Saprolegnia parasitica isolated from common carp eggs in fish hatchery JF - International Journal of Aquatic Biology JA - Intl. J. Aquat. Biol. VL - 10 IS - 5 SE - Articles DO - 10.22034/ijab.v10i5.1741 UR - https://ij-aquaticbiology.com/index.php/ijab/article/view/1741 SP - 378-383 AB - <p><em>Saprolegnia</em> spp. infect common carp (<em>Cyprinus carpio </em>L.) eggs in hatcheries. Therefore, this study aimed to evaluate the antifungal effect of biosynthesized zinc oxide nanoparticles (ZnNPs) against <em>Saprolegnia</em> spp. as an eco-friendly treatment. Biosynthesized ZnNPs were characterized using atomic force microscope (AFM), size distributor and Ultra Violate-Visible spectrometer (Uv-Vis), and Scanning &nbsp; Electron Microscope (SEM). Biosynthesized (ZnNPs) had a spherical shape with diameters ranging 10-70 nm. Antifungal activity was tested by fungal radial growth inhibition on corn meal agar. The highest concentration of 100 ppm of ZnNPs showed a remarkable inhibition rate of 79% against <em>Saprolegnia </em>spp., demonstrating similar efficiency as the positive control i.e. malachite green in the inhibition&nbsp;percentage rate of fungal growth. This study showed that biosynthesized zinc oxide nanoparticles had a significant antifungal effect (P&lt;0.05) and can be used as an alternative option to control <em>Saprolegnia</em> spp. in fish hatcheries.</p> ER -