Summary: In the course of developing methods to obtain dense populations of the ciliated protozoon with undisturbed physiology and free from growth medium, attempts were made to elicit a positive phototactic response. No phototaxis was observed, but a dramatic positive thermotaxis was demonstrated. When a dilute buffer was layered over the more dense culture fluid and a thermal gradient induced, the ciliates first collected at the buffer/culture fluid interface and then moved explosively through it to the top of the buffer layer. Concentrations of 10 organisms/ml. were obtained.


Article metrics loading...

Loading full text...

Full text loading...


Most cited this month Most Cited RSS feed

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