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The adults can reach more than 10 m (up to 30 ft) in length in some species such as D. latum, with more than 3,000 proglottids. One or several of the tape-like proglottid segments (hence the name tapeworm) regularly detach from the main body of the worm and release immature eggs in freshwater to start the cycle over again.
The adult tapeworm has a scolex (head), a short neck, and a strobila (segmented body) formed of proglottids. Tapeworms anchor themselves to the inside of the intestine of their host using their scolex, which typically has hooks, suckers, or both. They have no mouth, but absorb nutrients directly from the host's gut.
A tapeworm can live from a few days to over 20 years. [5] Eucestoda ontogenesis continues through metamorphosing in different larval stages inside different hosts. The initial six-hooked embryo, known as an oncosphere or hexacanth, forms through cleavage. In the order Pseudophyllidea, it remains enclosed in a ciliated embryophore.
Dipylidium life cycle. Dipylidium caninum, also called the flea tapeworm, double-pored tapeworm, or cucumber tapeworm (in reference to the shape of its cucumber-seed-like proglottids, though these also resemble grains of rice or sesame seeds) is a cyclophyllid cestode that infects organisms afflicted with fleas and canine chewing lice, including dogs, cats, and sometimes human pet-owners ...
The tapeworm can be almost 40 m (130 ft) in length with as many as 45,000 proglottids (segments). [4] The scolex (head) of the tapeworm is attached to the lining of the gut and the proglottids continuously develop from behind the scolex. As more segments are produced, the older ones become larger and more mature. [5]
Spirometra erinaceieuropaei is a parasitic tapeworm that infects domestic animals and humans. The medical term for this infection in humans and other animals is sparganosis. [1] Morphologically, these worms are similar to other worms in the genus Spirometra. They have a long body consisting of three sections: the scolex, the neck, and the ...
A medical report recently published in the New England Journal of Medicine notes that doctors in India rid a man of a roughly 6-foot long tapeworm by pulling it through his mouth.
Tapeworms develop in the small intestine. Adults attach to the intestinal mucosa. Adult tapeworms may grow to over 10 m in length and may constitute of over 3,000 proglottids [7] which contain sets of male and female reproductive organs, allowing for high fecundity. [8] Eggs appear in the faeces 5–6 weeks after infection. [7]