SUMMARY: Populations of over 400 /ml were maintained for over 18 months in the presence of bacteria, in a potassium phosphate-rich medium under 95% N + 5% CO with the daily addition of wholemeal flour and dried grass. was also maintained at a population density of 45 to 70/ml under the same conditions, except that it was necessary to add each day a culture of another protozoon such as or to give a population density of approximately 100/ml. The epidinia at least were engulfed by the polyplastron up to 10 being taken up each day; the minimum daily requirement for growth was one epidinium/polyplastron. also grew in the absence of other protozoa on a sodium chloride-rich medium, and if these protozoa were inoculated into the potassium phosphate-rich medium in the presence of epidinia, there was a lag of 3 to 5 days before they began to engulf the epidinia. The effect of other variations in the culture conditions is also described.


Article metrics loading...

Loading full text...

Full text loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error