The production of ammonia in mass cultures of the rotifer, Brachionus plicatilis O. F. Müller, feeding on bread yeast

Abstract

The production of ammonia in mass cultures of the rotifer, B.plicatilis,fed with different concentrations of bread yeast and temperatures are compared w i th that of the rotifer initially inoculated with algae culture.The levels of ammonia remained low in the last ones when the algae cells were still present They increased when the cells had been ingered by the rotifers. Nevertheless,the rotifer population initial1y inocu1ated in a1- gae culture always show a better growth than the ones fed on1y with bread yeast.This fact seems to be independent of the ammo- nia concentration in the culture water.