Balantidium coli is a cosmopolitan parasitic-opportunistic pathogen that can be Balantidium has a simple life cycle, as follows: dormant cyst to trophozoite and. Balantidium coli life cycle. Infection occurs when a host ingests a cyst, which usually happens during the consumption of contaminated. Download/Embed scientific diagram | Life cycle of Balantidium coli. from publication: 4. Parasitic Protozoa | Keywords:Protozoa and Parasites | ResearchGate.

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They have a tough multilayered shell which protects them against stomach acid of the host, when ingested. Sarcoptes Scabiei – Scabies. Balantidium coli Malmsten, Once it has adapted to a host species, the protozoan can become a serious pathogen, especially in humans. It belongs to the ciliophora phylum and is the only protozoan ciliate to infect humans. The following other wikis use this file: Balantidiasis is a zoonotic disease and is acquired by humans via the feco-oral route from the normal host, the pig, where it is asymptomatic.

Trichuris Trichiura – Whipworm. The macronucleus is long and sausage-shaped, and the spherical micronucleus is nested next to it, often hidden by the macronucleus. Retrieved from ” https: Most infections occur in developing countries where feces are more likely to get in contact with food and drinking water. Following ingestion, excystation occurs in the small intestine, and the trophozoites colonize the large intestine.


This page was last edited on 20 Septemberat Usually only the macronucleus and sometimes cilia and contractile vacuoles are visible in the cyst. Trophozoites are passed irregularly and quickly destroyed outside the colon.

There, excystation takes place. Cysts in the environment are then ready to infect another host.

File:Balantidium – Wikimedia Commons

From Wikipedia, the free encyclopedia. See Morphology and Transmission for further descriptions of the stages. Cysts are rarely found. Use dmy dates from June Articles with ‘species’ microformats.

The host most often acquires the cyst through ingestion of contaminated food or water. Paragonimus Westermani – Lung Fluke.

Views Read Edit View history. Date 14 November Source http: Contaminated water is the most common mechanism of transmission.

Their surface is covered with cilia and are able to move around. It cjcle not readily transmissible from one species of host to another because it requires a period of time to adjust to the symbiotic flora of the new host.


Cysts are the parasite stage responsible for transmission of balantidiasis. By using this site, you agree to the Terms of Use and Privacy Policy. Foundations of Parasitology 8th ed.

Balantidium Coli

Chromerida Chromeraceae Chromera velia Vitrellaceae Vitrella brassicaformis. The life cycle of Cooi coli begins, when a human eats food or water that has been contaminated with infective cysts. Alphamonadidae Alphamonas Voromonadidae Voromonas. Life Cycle of Balantidium coli. By using this site, you agree to the Terms of Use and Privacy Policy.

This image is a work of the Centers for Disease Control and Preventionpart of the United States Department of Health and Human Servicestaken or made as part of an employee’s official duties.

Some trophozoites invade the wall of the colon and multiply. Only drink pure water. Coil is the only ciliated protozoan known to infect humans. In other projects Wikimedia Commons Wikispecies. Balantidium coli The Disease: They multiply by transverse binary fission in the intestinal wall.