Намерих една статия за Стилонихия и Балантидум коли, но е на английски и предполагам няма да ти свърши работа, все пак ето за какво стана въпрос:

Stylonychia is a genus of ciliate, included among the stichotrichs. It is very common in fresh water and soil, found on filamentous algae, surface films, and among particles of sediment. Like its relatives, Stylonychia has cilia grouped into membranelles alongside the mouth and cirri over the body. It is distinguished partly by long cirri at the posterior, usually a cluster of three.

The stylonychia is oval in shape when viewed from the top, and it is notable for its incessant activity and rapid movement. It, like the paramecium and blepharisma, is a ciliate (having short hair like extensions). The cilia of stylonychia are more highly specialized and not freely distributed over its body. The cilia along the edge of the ventral surface seem to be tufts of cilia fused together and are used very much like legs allowing the animal to move with a walking motion. Longer fused cilia form stylus-like protrusions at both ends of its body. Another set of specialized cilia beat the water and sweep bacteria and other microorganisms into its oral cavity.



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Balantidium coli is a species of ciliate protozoan. This parasite is the only member of this family known to be pathogenic to humans. Hosts include pigs, wild boars, rats, primates (including humans), horses, cattle and guinea pigs. Infection is transmitted within or between these species by fecal-oral transmission. Pigs are the most significant reservoir hosts, though they show few if any symptoms.
A trophozoite of Balantidium coli
A trophozoite of Balantidium coli

Cysts are the infective stage, responsible for transmission of balantidiasis. The host usually acquires cysts through ingestion of contaminated food or water. Following ingestion, excystation occurs in the small intestine, and the trophozoites colonize the large intestine. Both cysts and trophozoites are identifiable by a large, "sausage shaped" macronucleus.
Balantidium coli as seen in a wet mount of a stool specimen. The organism is surrounded by cilia
Balantidium coli as seen in a wet mount of a stool specimen. The organism is surrounded by cilia

The trophozoites reside in the lumen of the large intestine, where they replicate by transverse binary fission, during which conjugation may occur. Some trophozoites invade the wall of the colon using proteolytic enzymes and multiply; some of these return to the lumen. In the lumen Trophozoites may disintegrate or undergo encystation. Encystation is trigerred by dehydration of the intestinal contents and usually occurs in the distal large intestine, but may also occur outside of the host in feces.

Worldwide. Pigs are a reservoir. Infection of people occurs more frequently in areas where pigs comingle with people, including the Philippines, Mexico, South America and Papua New Guinea.
Less than 1% of the human population is infected worldwide.