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.

Author: Nit Tekazahn
Country: Guadeloupe
Language: English (Spanish)
Genre: Technology
Published (Last): 2 May 2014
Pages: 236
PDF File Size: 6.34 Mb
ePub File Size: 19.88 Mb
ISBN: 239-1-88999-964-9
Downloads: 31842
Price: Free* [*Free Regsitration Required]
Uploader: Nashakar

The trophozoite may become invasive and penetrate the mucosa of the large intestine See Clinical Presentation.

In trophozoites, the two nuclei are visible. The cyst is the infective stage of Balantium coli life cycle. Infection most likely occurs in people with malnutrition due to the col stomach acidity or people with compromised immune systems.

Cysts are the parasite stage responsible for transmission of balantidiasis. Balantidium coli lives in the cecum and colon of humans, pigs, rats and other mammals. Some trophozoites invade the wall of the colon and multiply. Babesiidae Babesia Theileriidae Balahtidium. It can thrive in the gastrointestinal tract as long as there is a balance between the protozoan and the host without causing dysenteric symptoms.

Infection occurs when the cysts are ingested, usually through contaminated food or water. People who raise pigs have bigger risk of getting infected with balantidiasis.

File:Balantidium LifeCycle.png

If the cysts survive through the stomach, trophozoites are formed in the small intestine. The trophozoites reside in the lumen of the large intestine of humans and animals, where they replicate by binary fission, during which conjugation may occur. Balantidium coli is a parasitic species of ciliate alveolates that causes the disease balantidiasis. Following ingestion, excystation occurs in the small intestine, and the trophozoites colonize the large intestine.


Balantidium coli has 2 developmental stages: It is 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. Also check out the videos. Following ingestion, excystation occurs in the small intestin. Infection occurs when a host ingests a cyst, which usually happens during the consumption of contaminated water or food.

Balantidium Coli

Following ingestion, excystation occurs in the small intestine, and the trophozoites colonize the large intestine. The life cycle of Balantidium coli begins, when a human eats food or water that has been contaminated with infective cysts.

Wuchereria Bancrofti – Lymphatic Filariasis – Elephantiasis. The tough cyst wall allows the cyst to resist degradation in the acidic environment of the stomach and the basic environment of the small intestine until it reaches the large intestine.

This image is a work of the Centers for Disease Control and Preventionpart of the United States Department of Health balajtidium Human Servicestaken or made as part of an employee’s official duties. This GIF was problematic due to non-greyscale color table. Only drink pure water. Balantidium is the only ciliated protozoan known to infect humans. Diagnosis can be made by finding trophozoites from a stool or tissue sample collected during endoscopy.


This page balantiidum last edited on 20 Septemberat By using this site, you agree to the Terms of Use and Privacy Policy. Fasciola Hepatica – Liver Fluke. Chromerida Chromeraceae Chromera velia Vitrellaceae Vitrella brassicaformis.

Trophozoites live in the cecum and the colon of the large intestine. In acute disease, explosive diarrhea may occur as often as every twenty minutes.

Trophozoites have both a micronucleus and a macronucleus, which both are normally visible.

Mesodiniea MesodiniumMyrionecta. Balantidium coli is the largest protozoan parasite in humans and causes a disease called balantidiasis. Gemmocystidae Gemmocystis Rhytidocystidae Rhytidocystis.

File:Balantidium – Wikimedia Commons

Balantidiasis in humans is common in the Philippines, but it can be found anywhere in the world, especially among those that are in close contact with swine. Some return to the lumen and disintegrate. Taenia Saginata – Beef Tapeworm. Trophozoites undergo encystation to produce infective cysts. Some return to lumen and disintegrate. It goes through two development phases; a cyst and a trophozoite. If the feces get in contact with vegetables or drinking water, humans might ingest the cysts.

Their surface is covered with cilia and are able to move around. Unlike trophozoites, cysts cannot reproduce and do not have any cilia for moving. Cimex Lectularius – Bedbug.

Trichuris Trichiura – Whipworm. Taenia Solium – Pork Tapeworm.