<protozoa> Genus of ciliate protozoans. The slipper animalcule is cigar shaped, covered in rows of cilia and about 250 um long.

Free swimming, common in freshwater ponds, feeds on bacteria and other particles. Reproduces asexually by binary fission and sexually by conjugation involving the exchange of micronuclei.

See: kappa particle.

This entry appears with permission from the Dictionary of Cell and Molecular Biology

(11 Mar 2008)