Ecological Systems and Devices Annotation << Back Species and ecological peculiarities of lysozime activity in Black Sea fish serum Kuzminova N.S. The investigation of activity of serum lysozime of Black sea fish showed species differences. It was determined, that all species have high quantity of lysozime positive serums. Bottom fish have lower concentration of lysozime, than fish of other ecological groups. Bottom fish from more polluted bay have lower level of lysozime, than fish from cleaner area. The results of study showed high variability of lysozime activity, that means its dependence on many factors. Key words: lysozime; Black Sea fish. E-mail: kunast@rambler.ru