Difference between revisions of "Taenia"

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=''[[Taenia solium]]''=
 
=''[[Taenia solium]]''=
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== Taenia spp of the Dog ==
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=''[[Taenia ovis]]''=
 
{{Taxobox
 
{{Taxobox
−
|name              = ''Taenia solium
+
|name              = ''Taenia ovis
 
|kingdom            = Animalia
 
|kingdom            = Animalia
 
|phylum            = Platyhelminthes
 
|phylum            = Platyhelminthes
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|sub-family        =
 
|sub-family        =
 
|genus              = Taenia
 
|genus              = Taenia
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|species            = ''T. solium''
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|species            = ''T. ovis''
 
}}
 
}}
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[[Image:Taenia solium.jpg|200px|thumb|right|''Taenia solium'' <br> Roberto J. Galindo, Wikimedia Commons]]
 
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{| cellpadding="10" cellspacing="0" border="1"
 
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| Also known as:
 
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| '''Cysticercus cellulosae
 
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<br>
 
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'''Human pork tapeworm
 
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|-
 
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|}
 
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==Hosts==
 
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'''Intermediate host''': Pig, and also occasionally the dog and man.
 
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'''Definitive host''': Man.
 
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==Identification==
 
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The adults are 3-5m in length, have a scolex, and several rows of hooks.
 
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==Life Cycle==
 
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The life-cycle is similar to that of ''T. saginata'', except now the pig is the intermediate host. Gravid segments, containing the parasite eggs are passed in faeces.  The oncospheres are then ingested by the intermediate host, in this case the pig, and pass into the blood system, infecting striated muscles.  The cysticerci may also develop in the lungs, liver, kidney and the brain.  Like ''T. saginata'', humans, which are the definitive host becomes infected via ingestion of poorly cooked meat.
 
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== Taenia spp of the Dog ==
 
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=''T. ovis''=
 
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{| cellpadding="10" cellspacing="0" border="1"  
 
{| cellpadding="10" cellspacing="0" border="1"  
 
| Also known as:
 
| Also known as:
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The prepatent period for ''T. ovis'' is 6-9 months.
 
The prepatent period for ''T. ovis'' is 6-9 months.
  
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=''T. hydatigena''=
 
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{| cellpadding="10" cellspacing="0" border="1"
 
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| Also known as:
 
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| '''Taenia marginata
 
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<br>
 
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'''Cysticercus tenuicollis
 
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|-
 
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|}
 
  
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==Hosts==
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==References==
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'''Definitive host''': Dog, fox, weales, polecat, and stoat.
 
  
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'''Intermediate host''':  Sheep, horse, cattle, pig and deer.
+
Taylor, M.A, Coop, R.L., Wall,R.L. (2007) '''Veterinary Parasitology''' ''Blackwell Publishing''
  
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==Identification==
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[[Category:Taeniidae]]
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''T. marginata'' is a large tapeworm around 5m in length.  It has a large scolex, with two rows of hooks.  The eggs are oval.
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[[Category:To_Do_-_Max]]
  
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==Life Cycle==
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[[Category:To_Do_-_Review]]
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The intermediate host is infected through the ingestion of tapeworm eggs.
 
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Sheep are the most frequent intermediate host, but the cysticerci can establish in other animals. The oncosphere hatches out of the egg in the small intestine of the sheep.  Oncospheres travel to the hepatic portal system, where they transform to cysticerci. The grow rapidly while migrating through liver parenchyma, then to the peritoneal cavity. The cysticerci in the peritoneal cavity are approximately 8cm long; often found adhering to the omentum. Usually, liver damage heals, forming fibrotic tracts, which leads to condemnation at meat inspection. If a sheep swallows a whole proglottid, it leads to liver damage, and ultimately death (“cysticercosis hepatica”), but this is a rare event affecting a single animal in a flock.
 
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The definitive host is then infected through ingestion of the infected intermediate host.
 
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=''T. pisiformis''=
 
  
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=''[[Taenia pisiformis]]''=
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{{Taxobox
 +
|name              = ''Taenia pisiformis
 +
|kingdom            = Animalia
 +
|phylum            = Platyhelminthes
 +
|class              = [[Cestodes|Cestoda]]
 +
|sub-class          =
 +
|order              = [[Cyclophyllidea]]
 +
|super-family      =
 +
|family            = [[Taeniidae]]
 +
|sub-family        =
 +
|genus              = Taenia
 +
|species            = ''T. pisiformis''
 +
}}
 
{| cellpadding="10" cellspacing="0" border="1"  
 
{| cellpadding="10" cellspacing="0" border="1"  
 
| Also known as:
 
| Also known as:
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The definitive host is infected by ingestion of the cysticercus.  The prepatent period of ''T. pisinformis'' is around 7 weeks.
 
The definitive host is infected by ingestion of the cysticercus.  The prepatent period of ''T. pisinformis'' is around 7 weeks.
 
*It is similar to T. hydatigena, except that the cysticerci are pea-sized and are found on the omentum of rabbits.
 
*It is similar to T. hydatigena, except that the cysticerci are pea-sized and are found on the omentum of rabbits.
 +
==References==
  
 +
Taylor, M.A, Coop, R.L., Wall,R.L. (2007) '''Veterinary Parasitology''' ''Blackwell Publishing''
  
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=''T. multiceps''=
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[[Category:Taeniidae]]
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[[Category:To_Do_-_Max]]
  
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[[Category:To_Do_-_Review]]
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 +
 +
=''[[Taenia multiceps]]''=
 +
{{Taxobox
 +
|name              = ''Taenia multiceps
 +
|kingdom            = Animalia
 +
|phylum            = Platyhelminthes
 +
|class              = [[Cestodes|Cestoda]]
 +
|sub-class          =
 +
|order              = [[Cyclophyllidea]]
 +
|super-family      =
 +
|family            = [[Taeniidae]]
 +
|sub-family        =
 +
|genus              = Taenia
 +
|species            = ''T. multiceps''
 +
}}
 
{| cellpadding="10" cellspacing="0" border="1"  
 
{| cellpadding="10" cellspacing="0" border="1"  
 
| Also known as:
 
| Also known as:
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The intermediate host is infected via ingestion of the parasite eggs.  These eggs hatch in the small intestine.  The parasite the migrates to the spinal cord and brain via the blood stream.  The definitive host becomes infected when it eats the spinal bord, or brain of the intermediate host.
 
The intermediate host is infected via ingestion of the parasite eggs.  These eggs hatch in the small intestine.  The parasite the migrates to the spinal cord and brain via the blood stream.  The definitive host becomes infected when it eats the spinal bord, or brain of the intermediate host.
  
 +
==References==
 +
 +
Taylor, M.A, Coop, R.L., Wall,R.L. (2007) '''Veterinary Parasitology''' ''Blackwell Publishing''
 +
 +
[[Category:Taeniidae]]
 +
[[Category:To_Do_-_Max]]
  
−
=''T. serialis''=
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[[Category:To_Do_-_Review]]
  
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=''[[Taenia serialis]]''=
 +
{{Taxobox
 +
|name              = ''Taenia serialis
 +
|kingdom            = Animalia
 +
|phylum            = Platyhelminthes
 +
|class              = [[Cestodes|Cestoda]]
 +
|sub-class          =
 +
|order              = [[Cyclophyllidea]]
 +
|super-family      =
 +
|family            = [[Taeniidae]]
 +
|sub-family        =
 +
|genus              = Taenia
 +
|species            = ''T. serialis'
 +
}}
 
{| cellpadding="10" cellspacing="0" border="1"  
 
{| cellpadding="10" cellspacing="0" border="1"  
 
| Also known as:
 
| Also known as:
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==Life Cycle==
 
==Life Cycle==
 
The intermediate host is infected through ingestion of the tapeworm egg, which is shed by the dog, which acts as the definitive host.  These develop and form cysts in the intermuscular connective tissues of rabbits, often causing a soft subdermal swelling. .  The definitive host then becomes infected through ingestion of the metacestode.
 
The intermediate host is infected through ingestion of the tapeworm egg, which is shed by the dog, which acts as the definitive host.  These develop and form cysts in the intermuscular connective tissues of rabbits, often causing a soft subdermal swelling. .  The definitive host then becomes infected through ingestion of the metacestode.
 +
 +
 +
==References==
 +
 +
Taylor, M.A, Coop, R.L., Wall,R.L. (2007) '''Veterinary Parasitology''' ''Blackwell Publishing''
 +
 +
[[Category:Taeniidae]]
 +
[[Category:To_Do_-_Max]]
 +
 +
[[Category:To_Do_-_Review]]
  
 
== Taenia spp of the Cat ==
 
== Taenia spp of the Cat ==
  
−
=''T. taeniaeformis''=
+
=''[[Taenia taeniaeformis]]''=
−
 
+
{{Taxobox
 +
|name              = ''Taenia taeniaformis
 +
|kingdom            = Animalia
 +
|phylum            = Platyhelminthes
 +
|class              = [[Cestodes|Cestoda]]
 +
|sub-class          =  
 +
|order              = [[Cyclophyllidea]]
 +
|super-family      =
 +
|family            = [[Taeniidae]]
 +
|sub-family        =
 +
|genus              = Taenia
 +
|species            = ''T. taeniaformis
 +
}}
 
{| cellpadding="10" cellspacing="0" border="1"  
 
{| cellpadding="10" cellspacing="0" border="1"  
 
| Also known as:
 
| Also known as:

Revision as of 12:01, 3 August 2010

Taenia spp of Humans

Taenia saginata

Taenia solium

Taenia spp of the Dog

Taenia ovis

Taenia ovis
Kingdom Animalia
Phylum Platyhelminthes
Class Cestoda
Order Cyclophyllidea
Family Taeniidae
Genus Taenia
Species T. ovis
Also known as: Cysticercus ovis


Ovine cysticercosis
Sheep measles

Hosts

Intermediate host: sheep, and goats.

Definitive host: dogs and foxes.

Identification

T. ovis is a large tapeworm, usually around 1m in length. It has numerous hooks.

Life Cycle

The intermediate host ingests cysticercus, which hatch in the intestine and later infect the skeletal muscle and the heart. The definitive host becomes infected by ingestion of the intermediate host.

The prepatent period for T. ovis is 6-9 months.


References

Taylor, M.A, Coop, R.L., Wall,R.L. (2007) Veterinary Parasitology Blackwell Publishing

Taenia pisiformis

Taenia pisiformis
Kingdom Animalia
Phylum Platyhelminthes
Class Cestoda
Order Cyclophyllidea
Family Taeniidae
Genus Taenia
Species T. pisiformis
Also known as: Cysticercus pisiformis

Hosts

Definitive host: Dogs and foxes.

Intermediate host: Rabbits and hares.

Identification

T. pisiformis is around 2m in length, and have large scolexes and hooks.

Life Cycle

Infection of the intermediate host is through ingestion of the tapeworm eggs shed by the dogs. The hatch in the small intestine of the intermediate host, they then continue to develop in the liver and the abdominal cavity.

The definitive host is infected by ingestion of the cysticercus. The prepatent period of T. pisinformis is around 7 weeks.

  • It is similar to T. hydatigena, except that the cysticerci are pea-sized and are found on the omentum of rabbits.

References

Taylor, M.A, Coop, R.L., Wall,R.L. (2007) Veterinary Parasitology Blackwell Publishing


Taenia multiceps

Taenia multiceps
Kingdom Animalia
Phylum Platyhelminthes
Class Cestoda
Order Cyclophyllidea
Family Taeniidae
Genus Taenia
Species T. multiceps
Also known as: Multiceps multiceps


Coenurus cerebralis
Gid
Staggers

Hosts

Definitive host: Dogs and foxes.

Intermediate host: Cattle, sheep, pig, horses and man.

Identification

T. multiceps are around 5cm in length.

Life Cycle

The intermediate host is infected via ingestion of the parasite eggs. These eggs hatch in the small intestine. The parasite the migrates to the spinal cord and brain via the blood stream. The definitive host becomes infected when it eats the spinal bord, or brain of the intermediate host.

References

Taylor, M.A, Coop, R.L., Wall,R.L. (2007) Veterinary Parasitology Blackwell Publishing

Taenia serialis

Taenia serialis
Kingdom Animalia
Phylum Platyhelminthes
Class Cestoda
Order Cyclophyllidea
Family Taeniidae
Genus Taenia
Species T. serialis'
Also known as: Coenurus serialis

Hosts

Definitive host:Dog.

Intermediate host: Rabbit.

Identification

T. serialis is around 0.5m, with two prominent rows of hooks.

Life Cycle

The intermediate host is infected through ingestion of the tapeworm egg, which is shed by the dog, which acts as the definitive host. These develop and form cysts in the intermuscular connective tissues of rabbits, often causing a soft subdermal swelling. . The definitive host then becomes infected through ingestion of the metacestode.


References

Taylor, M.A, Coop, R.L., Wall,R.L. (2007) Veterinary Parasitology Blackwell Publishing

Taenia spp of the Cat

Taenia taeniaeformis

Taenia taeniaformis
Kingdom Animalia
Phylum Platyhelminthes
Class Cestoda
Order Cyclophyllidea
Family Taeniidae
Genus Taenia
Species T. taeniaformis
Also known as: Hydatigera taeniaeformis


Taenia crassicollis
Cysticercus fasciolaris
Strobilocercus fasciolaris

Hosts

Definitive host: Cats, and foxes.

Intermediate host: Mice, rats, rabbits, and squirrels.

Identification

The adult is around 70 cm, and has a large scolex.

Life Cycle

The eggs are past in faeces, which are ingested by the intermediate host. The metacestode matures in the intermediate host, before being ingested by the definitive host.

References

Taylor, M.A, Coop, R.L., Wall,R.L. (2007) Veterinary Parasitology Blackwell Publishing

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