Document Type : Research Paper
Ph.D. in Fisheries, Faculty of Marine Sciences, Tarbiat Modares University, Noor, Iran
Professor in Department of Fisheries, Faculty of Marine Sciences, Tarbiat Modares University, Noor, Iran
Silver nanoparticles because of their antibacterial properties have become one of the most widely used combinations of nanomaterial and due to the development of nanoparticles, there are the risks of releasing of such materials to the environment from products containing them. In this study, six types of a filter containing silver nanoparticles containing 0.25, 0.5 and 1 percentage nanosilver with and without Aminopropyl triethoxysilane is used to control the Saprolegnia fungus in Persian sturgeon egg incubators. Two of six filters contain one percentage of silver nanoparticles could prevent Saprolegnia fungus completely as the optimal filter. The effects of these two types of optimized filters on embryos of Persian sturgeon kept in the incubator examined by studying the changes of some oxidative enzymes including glutathione peroxidase and lactate dehydrogenase and also by studying lactate changes by HNMR, in the second and fourth days of the incubation period. The results showed that the use of filters containing silver nanoparticles due to the release of silver from the filter into the water reduced glutathione peroxidase in both sampling days and reduced lactate and lactate dehydrogenase in second incubation day and increased them in the fourth day. So measuring these enzymes is a good biomarker for early assessment of those intracellular changes in fish that are affected by such filters.