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Echinococcus granulosus, also called the hydatid worm or dog tapeworm, is a cyclophyllid cestode that dwells in the small intestine of canids as an adult, but which has important intermediate hosts such as livestock and humans, where it causes cystic echinococcosis, also known as hydatid disease.
In particular, dogs in larger holdings, young animals, dogs in contact with other animals, hunting dogs, strays, and animals fed raw meat products are at higher risk of infection. [69] The European Scientific Counsel Companion Animal Parasites (ESCCAP) - the European association of experts on parasites in dogs and cats - has therefore issued ...
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 ...
Tapeworms* are also common and in the dog are usually Dipylidium caninum, which is spread by ingesting fleas and lice. Also common is Taenia pisiformis, spread by ingesting rabbits and rodents. Rare tapeworm infections are caused by species of the genera Echinococcus, Mesocestoides, and Spirometra. There are usually no symptoms. [6]
A few decades afterward, in 1782, Goeze accurately described the cysts and the tapeworm heads, while in 1786 E. granulosus was accurately described by Batsch. Half a century later, during the 1850s, Karl von Siebold showed through a series of experiments that Echinococcus cysts do cause adult tapeworms in dogs.
The origin of these parasites based on host-parasite co-evolution comparisons was North America or Asia, depending on whether the ancestral definitive hosts were canids or felids. Echinococcus oligarthrus and Echinococcus vogeli are basal in this genus. [6] The genus is a sister to the genus Taenia from which it diverged more than 10 million ...
Tapeworms are parasites that live in the bodies of their hosts including humans. A 38-year-old man from China was one such host -- recently having a 20-foot-long version of the parasite removed ...
Echinococcus multilocularis, the fox tapeworm, is a small cyclophyllid tapeworm found extensively in the northern hemisphere. E. multilocularis, along with other members of the Echinococcus genus (especially E. granulosus ), produce diseases known as echinococcosis .
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