author(s)
Alekperov I Kh and Mansimova IF

abstract
During the period of 2014-2016 we studied the food relationship of free living ciliates of Agzybir Lake. In all 162 species were found, 12 of them were marked for the first time the Caucasus fauna. The ciliates, differs for feeding process, were combined of five trophic groups (algophages, bacteriophages, non-selective omnivorous species, predators and histophages). The food relationship between ciliates and other various groups of aquatic organisms, has been studied. It was found the dominant factor in the development of various groups is the food relationship within community.