Results of experimental studies on suppressing the growth of micromycetes (fam. Saprolegniaceae) on egg membranes of embryos of russian sturgeon and beluga in the incubation period

For successful development of aquaculture, fish farms have to be provided by effective means and methods prevent treat diseases fish. Many drugs are limited for using in so the influence each particular drug or chemical substance on should investigated carefully. Effectiveness solutions suppressing growth saprolegnium micromycetes egg membranes other tissues sturgeon embryos during their incubation is evaluated. The experiment was conducted at research experimental base BIOS belonged Russian Res. Inst. Fisheries Oceanography, Volga-Caspian branch (CaspNIRKh) located Astrakhan included a series observations eggs processed with some chemicals (Purple-K, sodium chloride, hydrogen peroxide) (Iodinol). Two species (russian beluga) were tested measuring biological parameters embryos, as survival rate, contamination saprolegnia micromycetes, number abnormally developing obtained prelarvae. processing 0.05 % solution peroxide (10 min. exposure) 0.90 chloride (3 showed best results: these made lowest negative effect but reduced significantly infection incubated eggs.