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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Schistosoma – Blood Flukes.

Cysts are the parasite stage responsible for transmission of balantidiasis. Dermatobia hominis – Human Botfly. Squirmidae FilipodiumPlatyproteum.

This image is a work of the Centers balantiium Disease Control and Preventionpart of the United States Department of Health and Human Servicestaken or made as part of an employee’s official duties. Retrieved from ” https: Balantidium Coli Balantidium coli is the largest protozoan parasite in humans and causes a disease called cyfle.

Balantidium coli lives in the cecum and colon of humans, pigs, rats and other mammals.

File:Balantidium LifeCycle.png

Life cycle image and information courtesy of DPDx. Trophozoites are released with the feces, and encyst to form new cysts. Cysts are the parasite stage responsible for transmission of balantidiasis. See Morphology and Cydle for further descriptions of the stages.


Only drink pure water. Usually only the macronucleus and sometimes cilia and contractile vacuoles are visible in the llife. Some people are weakened by other diseases and thus the cysts are not killed. Balantidium coli Malmsten, In addition to humans, pigs and other animals carry the disease. Cysts are spherical and 0.

CDC – Balantidiasis – Biology

The host most often acquires the cyst through ingestion of contaminated food or water. March 17, Content source: If the drug is not available, then iodoquinol and metronidazole can be used. The cysts are formed either in the large intestine or outside of the body. Views Read Edit View history.

Balantidium coli – Wikipedia

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 infection in immunocompetent individuals is not unheard of, but it rarely causes serious disease of the gastrointestinal tract.


If the feces get in contact with vegetables or drinking water, humans might ingest the cysts. Trophozoites undergo encystation to produce infective cysts.

Mesodiniea MesodiniumMyrionecta.

Paragonimus Westermani – Lung Fluke. Global Health — Division of Parasitic Diseases. Following ingestion, excystation occurs in the small intestine, and the trophozoites colonize the large intestine.

Enterobius Vermicularis – Pinworm. Living trophozoites and cysts are yellowish or greenish in color. Cysts in the environment are then ready to infect another host. The macronucleus is bigger and sausage-shaped whereas the micronucleus is less notable. 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. From Wikipedia, the free encyclopedia. The host most often acquires the cyst through ingestion of contaminated food or water.