Taenia solium is the pork tapeworm , a tapeworm belonging to the cyclophyllid cestode family Taeniidae. It is found throughout the world and is most common in countries where pork is eaten. There are two forms. One is due to eating undercooked pork that contains the cysts and results in adult worms in the intestines. The other, known as cysticercosis , is due to eating food or water contaminated with feces from someone infected by the adult worms. The adult worm has humans as its main host and has a flat, ribbon-like body which is white and measures 2 to 3 metres long or more.
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Beef Tapeworm. The life cycle of the beef tapeworm is a bit complicated and has some essential steps to complete its cycle. The adult releases gravid segments proglottids filled with eggs that are carried away by the digestive tract and released into the environment through the feces.
The proglottid segments are ingested by the cattle through the contaminated vegetation and then the proglottids enter the digestive tract of its intermediate host. The enzymes and acids found in the gastrointestinal tract break down the protective barrier of the proglottid and release up to , eggs into the bovines system. The eggs develop into oncosphere covered larvae that break through the intestine epithelium and travel through the circulation of the bovine.
Then the larvae end up in the muscle tissue and the oncosphere fills with fluid and become a cysticercus. T o finish complex life cycle, t he undercooked beef meat must be eaten by a human definitive host and then will enter the digestive system. Taenia saginata is then able to grow, and within three months it can reach 5 meter s long.
At this point of maturity, the tapeworm is then able to release proglottids to restart is life cycle. Now that you know the complicated life cycle, take a look at the medical condition and problems that the infection this parasite causes, Taeniasis! Back to Multiple Organisms Webpage.
Life Cycle Around and around we go!
Taenia Saginata - Beef Tapeworm
NCBI Bookshelf. Ellen J. Lesh ; Mark F. Authors Ellen J. Brady 1. Cestodes are flat, parasitic, hermaphroditic tapeworms with complex life cycles that infect animals, including humans. Although there are multiple species of cestodes, this paper will focus on three particular species that cause human disease: Taenia solium pork tapeworm , Taenia saginata beef tapeworm , and Diphyllobothrium fish tapeworm.
The cestodes tapeworms Taenia saginata beef tapeworm and T. Taenia solium eggs can also cause cysticercosis. Taeniasis is the infection of humans with the adult tapeworm of Taenia saginata or Taenia solium. Humans are the only definitive hosts for T. Eggs or gravid proglottids are passed with feces ; the eggs can survive for days to months in the environment.
Taenia saginata. Beef Tapeworm. History of Discovery return to top. Tapeworm infections have been recorded in history from B.
Taenia saginata is a large tapeworm that causes an infection called taeniasis. It is commonly known as the beef tapeworm or cattle tapeworm because it uses cows as intermediate hosts. Humans are the only definitive hosts. The life cycle of Taenia saginata starts, when eggs are passed in the feces of an infected human in a container called a proglottid or a tapeworm segment.