Cyclophyllidea


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Cyclophyllidea

[‚sī·klō·fə′lid·ē·ə]
(invertebrate zoology)
An order of platyhelminthic worms comprising most tapeworms of warm-blooded vertebrates.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Cyclophyllidea

 

an order of tapeworms. The Cyclophyllidea have four suckers on the head, and some also have a rostel-lum with hooks. They parasitize the intestines of the principal host, which may be any of a variety of vertebrates (excluding fishes) and is sometimes a human. The larvae parasitize the body cavity, muscles, and other organs of the intermediate host, which may be a vertebrate or arthropod. The transition from the larval to adult stage usually occurs as a result of a change of hosts.

The Cyclophyllidea cause serious diseases in humans and animals. Taenia solium parasitizes the human intestine. It measures 2–3 m in length, sometimes as much as 8 m. The larvae are oncospheres, which are enclosed in the mature segments of the tapeworm and are released with the host’s excrement. The larvae then enter the stomach of the intermediate host, for example, a pig, dog, or cat; they penetrate the blood vessels and settle mainly in the muscles, becoming bladder worms. Humans are infected by eating undercooked pork containing bladder worms.

Taeniarhynchus saginatus measures up to 10 m in length. Its intermediate host is cattle, and its definite host is man. Hymenolepis nana and Echinococcus granulosus are also dangerous parasites of humans.

All Cyclophyllidea severely emaciate the bodies of humans and animals and sometimes lead to their death. For control measures, see.

A. V. IVANOV

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
granulosus); parte del phylum Platyhelminthes, clase Cestoda; subclase Eucestoda, orden Cyclophyllidea, familia Taeniidae, genero Echinococcus (Romig et al., 2015).
Los cestodos de la familia Hymenolepididae (Cyclophyllidea) son parasitos de diversas especies de aves y pequenos mamiferos, principalmente roedores, insectivoros y quiropteros (Czaplinski & Vaucher 1994).
Morphological description of Taenia saginata asiatica (Cyclophyllidea: Taeniidae) from man in Asia.
Taenia taeniformis larvae (Strobilocercus fasciolaris) (Cestoda: cyclophyllidea) from commensal rodents in Argentina: Potential sanitary risk
2007: Post-embryonic development and ultrastructural characteristics of the polycephalic larva of Taenia parva Baer, 1926 (Cyclophyllidea, Taeniidae).
Halanych et al., 1995--lophotrochozoans Platyzoa Ax, 1987 Phylum Platyhelminthes Gegenbaur, 1859--flatworms Subphylum Neodermata (Ehlers, 1985) Cavalier-Smith, 1998 Infraphylum Cercomeromorpha (Bychowsky, 1937) Cavalier-Smith, 1998 Class Cestoda--tapeworms Nephroposticophora Subclass Eucestoda--eucestodes Order Cyclophyllidea van Beneden, 1900 Family Taeniidae Ludwig, 1886 Genus Cysticercus rudolphi, 1801 Cysticercus tenuicollis (Figura 1).
(Eucestoda: Cyclophyllidea) from the Rough Tail Rock Agama stellio (Agamidae) in Egypt.
Ultrastructure of cells and extracellular matrices in the hindbody of non-proliferative tetrathyridia of Mesocestoides lineatus (Cestoda: Cyclophyllidea).
Chung, "Morphological description of Taenia saginata asiatica (Cyclophyllidea: Taeniidae) from man in Asia," Journal of Helminthology, vol.
If we compare this parallel disposition to the principal groups of parasitic flatworms, we notice that it is also the case in the Monogenea (except in certain monopisthocotyleans; Justine et al., 1985; Justine, 1991b) and in the Eucestoda (except in the Cyclophyllidea and Tetrabothriidea, which have spiralled cortical microtubules; Levron et al., 2010).
Dipylidium caninum belongs to the class Cestoda and the order Cyclophyllidea. (6) It naturally infects both dogs and cats, yet human infection is far less likely.