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Encyclopedia > Tapeworm
Wikipedia:How to read a taxobox
How to read a taxobox
Cestoda
Scolex of Tenia solium
Scolex of Tenia solium
Scientific classification
Kingdom: Animalia
Phylum: Platyhelminthes
Class: Cestoda
Orders

Subclass Cestodaria
Amphilinidea
Gyrocotylidea
Subclass Eucestoda
Aporidea
Caryophyllidea
Cyclophyllidea
Diphyllidea
Lecanicephalidea
Litobothridea
Nippotaeniidea
Proteocephalidea
Pseudophyllidea
Spathebothriidea
Tetraphyllidea
Trypanorhyncha
Tenia solium, a parasitic cestode worm, showing its scolex. ... Orders Subclass Cestodaria Amphilinidea Gyrocotylidea Subclass Eucestoda Aporidea Caryophyllidea Cyclophyllidea Diphyllidea Lecanicephalidea Litobothridea Nippotaeniidea Proteocephalidea Pseudophyllidea Spathebothriidea Tetraphyllidea Trypanorhyncha In biology, Cestoda is the class of parasitic flatworms, called tapeworms, that live in the digestive tracts of vertebrates as adults and often in the bodies of various animals as juveniles. ... Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. ... Digimon, the only known animals. ... Classes Monogenea Trematoda Cestoda Turbellaria The flatworms (Platyhelminthes, Greek platy: flat; helminth: worm) are a phylum of relatively simple soft-bodied invertebrate animals. ... Scientific classification or biological classification refers to how biologists group and categorize extinct and living species of organisms. ... This page is a candidate for speedy deletion, because: no content If you disagree with its speedy deletion, please explain why on its talk page or at Wikipedia:Speedy deletions. ... Orders Aporidea Caryophyllidea Cyclophyllidea Diphyllidea Lecanicephalidea Litobothridea Nippotaeniidea Proteocephalidea Pseudophyllidea Spathebothriidea Tetraphyllidea Trypanorhyncha Eucestoda is the larger of the two subclasses of flatworms in the class Cestoda. ... The Caryophyllideans are a group of tapeworms that infect fish and annelids (segmented worms) with a simple scolex or head. ... Families Dipylidiidae Hymenolepididae Taeniidae … Tapeworms of the order Cyclophyllidea (the cyclophyllid cestodes) are the most important cestode parasites of humans and domesticated animals. ... Pseudophyllid cestodes (order pseudophyllidea) are a kind of flatworm with multiple segments (proglottids) and two bothria or sucking grooves as adults. ... This article needs to be wikified. ... Families Subclass Acystidea Paranybeliniidae Tentaculariidae Hepatoxylidae Sphyriocephalidae Subclass Cystidea Dasyrhynchidae Mustelicolidae Lacistorhynchidae Pterobothriidae Gymnorhynchidae Otobothriidae Rhinoptericolidae Tetrarhynchobothriidae Gilquiniidae Eutetrarhynchidae Hornelliellidae Pseudogrillotiidae Trypanorhyncha is an order of cestode. ...

In biology, Cestoda is the class of parasitic flatworms, called cestodes or tapeworms, that live in the digestive tract of vertebrates as adults and often in the bodies of various animals as juveniles. A parasite is an organism that lives in or on the living tissue of a host organism at the expense of it. ... Classes Monogenea Trematoda Cestoda Turbellaria Wikimedia Commons has media related to: Platyhelminthes Wikispecies has information related to: Platyhelminthes The flatworms (Platyhelminthes, Greek platy: flat; helminth: worm) are a phylum of relatively simple soft-bodied invertebrate animals. ... For the Physics term GUT, please refer to Grand unification theory The gastrointestinal or digestive tract, also referred to as the GI tract or the alimentary canal or the gut, is the system of organs within multicellular animals which takes in food, digests it to extract energy and nutrients, and... Classes and Clades See below Male and female Superb Fairy-wren Vertebrates are members of the subphylum Vertebrata (within the phylum Chordata), specifically, those chordates with backbones or spinal columns. ...


In a tapeworm infection, adult worms absorb food predigested by the host, so the worms have no need for a digestive tract or a mouth. Large tapeworms are made almost entirely of reproductive structures with a small "head" for attachment. Symptoms vary widely, depending on the species causing the infection. Adult tapeworm infection is the infection of the digestive tract by parasitic flatworms called cestodes or tapeworms. ... For the Physics term GUT, please refer to Grand unification theory The gastrointestinal or digestive tract, also referred to as the GI tract or the alimentary canal or the gut, is the system of organs within multicellular animals which takes in food, digests it to extract energy and nutrients, and...


Symptoms may include upper abdominal discomfort, diarrhea, and loss of appetite. However, infestations are usually asymptomatic. Worm segments or eggs may be found in the stool of an infected person. Tapeworms can grow 15 to 30 feet (10 meters) in length.[1] The largest tapeworms grow up to 59 feet (18 meters)[1]. Most tapeworms enter humans through infected food, the same way they enter pets. Tapeworms harm their host by stealing vital nutrients, causing malnutrition and, if left untreated, can cause intestinal blockages. In medicine, a disease is asymptomatic when it is at a stage where the patient does not experience symptoms. ... Look up stool in Wiktionary, the free dictionary. ... Malnutrition is a general term for the medical condition caused by an improper or insufficient diet. ...


There are two subclasses in class Cestoda, the Cestodaria and the Eucestoda. By far the most common and widespread are the Eucestoda, with only a few species of unusual worms in subclass Cestodaria. The cyclophyllideans are the most important to humans because they infect people and livestock. Two important tapeworms are the pork tapeworm, Taenia solium, and the beef tapeworms, T. saginata. Different types of tapeworms have radically different larval stages (see their specific articles). Tapeworms can cause additional death to animals. Starting with dogs especially toy breeds , the worm starts at the stomach wrapping its enormous build around the stomach then moving on to the heart. If they don't get treatment they die within 27 hours of infection. In biology, a subclass is one level below a class. ... This page is a candidate for speedy deletion, because: no content If you disagree with its speedy deletion, please explain why on its talk page or at Wikipedia:Speedy deletions. ... Orders Aporidea Caryophyllidea Cyclophyllidea Diphyllidea Lecanicephalidea Litobothridea Nippotaeniidea Proteocephalidea Pseudophyllidea Spathebothriidea Tetraphyllidea Trypanorhyncha Eucestoda is the larger of the two subclasses of flatworms in the class Cestoda. ... Families Dipylidiidae Hymenolepididae Taeniidae … Tapeworms of the order Cyclophyllidea (the cyclophyllid cestodes) are the most important cestode parasites of humans and domesticated animals. ... Sheep are commonly bred as livestock. ... Stained proglottid. ... Binomial name Taenia saginata Goeze, 1782 Taenia saginata proglottid stained to show uterine branches. ...

Contents

Types of Tapeworm

Taenia solium and T. saginata are the most common tapeworms. A person can become infected by these parasites by eating raw or undercooked meat that has been infected. Symptoms generally include abdominal pain, diarrhea, nausea, and other gastrointestinal symptoms. Sometimes, the parasite may migrate to the appendix, pancreas, or bile duct causing severe abdominal pain. Stained proglottid. ... Binomial name Taenia saginata Goeze, 1782 Taenia saginata proglottid stained to show uterine branches. ...


A dangerous complication of the parasite Taenia solium, Cysticercosis, may occur when the larvae develop outside the intestinal tract. This parasite can move from the intestines to muscle tissue, bone marrow, fingers, and in some cases the central nervous system (neurocysticercosis). The latter infection can lead to seizures and other neurological problems. Stained proglottid. ... Cysticercosis is a the most common parasitic infection of the central nervous system worldwide. ... Cysticercosis, or neurocysticercosis, is the most common parasitic infection of the central nervous system worldwide. ...


A third type of tapeworm, Diphyllobothrium latum, is contracted by eating raw, infected fish. The fish become infected by eating infected crustaceans, which became infected by consuming untreated sewage. This tapeworm results in symptoms similar to those of T. saginata and Taenia solium, but can also include weakness and fatigue. Species Diphyllobothriasis is caused by the infestation of tapeworms, of the genus Diphyllobothrium. ... Binomial name Taenia saginata Goeze, 1782 Taenia saginata proglottid stained to show uterine branches. ... Stained proglottid. ...


Adult morphology

Adult tapeworms share a basic body structure. All have a scolex, sometimes colloquially referred to as the "head," a "neck," and one or more proglottids, which are sometimes called "segments." These are the source of the name "tapeworm," because they look like a strip of tape. All cestodes have a nerve ring in the scolex with lateral trunks passing through the rest of the body.


Scolex

The Scolex or "head" of the worm attaches to the intestine of the definitive host. In some groups, the scolex is dominated by bothria, which are sometimes called "sucking grooves," and function like suction cups. Other groups have hooks and suckers that aid in attachment. Cyclophyllid cestodes can be identified by the presence of four suckers on their scolex, though they may have other structures. In parasitology, an intermediate host is an organism that is infected with a parasite that will not reproduce sexually within it, while a definitive host is one in which the parasite reproduces. ... Tapeworms of the order Cyclophyllidea (the cyclophyllid cestodes) are the most important cestode parasites of humans and domesticated animals. ...


While the scolex is often the most distinctive part of an adult tapeworm, it is often unnoticed in a clinical setting as it is inside the patient. Thus, identifying eggs and proglottids in feces is important.


Neck

The Neck of a tapeworm is a relatively undifferentiated mass of cells that divide to form new proglottid "segments." This is where all growth in an adult tapeworm occurs.


Proglottids

The body is composed of successive units posterior to the scolex, the proglottids. The sum of the proglottids is called a strobila, which is thin, resembling a strip of tape, and is the source of the common name tapeworm. Like some other flatworms, cestodes use flame cells (protonephridia) for excretion, which are located in proglottids. Look up Tape in Wiktionary, the free dictionary. ... A flame cell is a specialized excretory cell found in the Platyhelminthes (except the tubellarian order Acoela), these are the simplest animals to have a dedicated excretory system. ...


Mature or gravid proglottids are released from the mature tapeworm and leave the host in its feces. Wikipedia does not have an article with this exact name. ... Feces, faeces, or fæces (see spelling differences) In humans, defecation may occur (depending on the individual and the circumstances) from once every two or three days to several times a day. ...


Because each proglottid contains the male and female reproductive structures, they can reproduce independently. It has been suggested by some biologists that each should be considered a single organism, and that the tapeworm is actually a colony of proglottids.


Treatment

CDC guidelines for treatment is a prescription drug called praziquantel. Praziquantel is generally well tolerated. Sometimes more than one treatment is necessary. [2] The Centers for Disease Control and Prevention (CDC) in Atlanta, Georgia, is recognized as the leading United States agency for protecting the public health and safety of people. ... // Chemical Designation 2-(Cyclohexylcarbonyl)-1,2,3,6,7,11b-hexahydro-4H-pyrazino(2,1-alpha)isoquinolin-4-one History Praziquantel was developed in the laboratories (parasitological research) of Bayer AG in Germany (Elberfeld) 30 years ago. ...


This article contains material from the CDC (Center for Disease Control) website which, as a US government publication, is in the public domain. The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ...


Reference

  1. ^ Tapeworm Infection. Retrieved on 2007-02-14.
  • Campbell, Reece, and Mitchell, Biology, 1999
  • Merck Manual of Medication Information, Second Home Edition, Online Version, Tapeworm Infection, 2005
  • Mayo Clinic Website on infectious diseases, Mayo Clinic - Tapeworm Infection, 2006

2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the Anno Domini (common) era. ... February 14 is the 45th day of the year in the Gregorian calendar. ... 1999 (MCMXCIX) was a common year starting on Friday, and was designated the International Year of Older Persons by the United Nations. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... For the Manfred Mann album, see 2006 (album). ...

See also

Wikimedia Commons has media related to:
Wikispecies has information related to:
Cestoda

  Results from FactBites:
 
Tapeworm diseases (2452 words)
Tapeworms are a group of parasitic worms that live in the intestinal tracts of some animals.
Tapeworm infections in humans are less common in industrialized regions of the world, although German public health experts reported in 2003 that the rate of these infections is higher in Europe than the official statistics indicate.
Identification of tapeworm segments or eggs in a stool sample is necessary for diagnosis of an adult tapeworm infection.
Feline Tapeworm Infection ~ Pawprints and Purrs, Inc. (1105 words)
The tapeworm uses its hook-like mouthparts for anchoring to the wall of the small intestine.
Tapeworms are not particularly harmful to the cat and few clinical signs are attributed to their presence.
Be aware that tapeworms are not readily diagnosed with routine fecal examinations.
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