Difference between revisions of "Category:Filarioidea"

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(Created page with 'Category:Non-Bursate Nematodes')
 
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The filarial worms are of great importance in human medicine in the tropics, causing diseases such as elephantitis and river blindness, but their veterinary interest is limited - with the important exception of ''Dirofilaria'', the canine heartworm, which is a major cause of morbidity and death in warmer, humid regions (including parts of the USA, Australia, southern Europe etc.).
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== General Appearance ==
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*Non-bursate
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*Typically, they are long (up to 12cm or more), but filamentous
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*Live in connective tissues
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**The most important veterinary species is ''Dirofilaria immitis'' which lives in the right heart and pulmonary arteries
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== General Life-Cycle ==
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*The females of most species do not produce eggs, but instead they produce motile embryos ('''microfilariae''')
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*Female worm → microfilariae → accumulate in blood or tissue fluid
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→ taken up by biting arthropod intermediate host
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→ L1 → L2 → L3
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→ enters wound
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→ larvae develop and migrate to predilection site in final host
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[[Dirofilaria immitis]]
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[[Onchocerca spp.]]
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[[Parafilaria spp.]]
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[[Setaria spp.]]
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[[Elaeophora scheideri]]
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[[Stephanofilaria spp.]]
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*''Filaroides osleri'' causes infection in [[Respiratory Parasitic Infections - Pathology#Filaroides osleri|trachea]]in gogs
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[[Category:Non-Bursate Nematodes]]
 
[[Category:Non-Bursate Nematodes]]

Revision as of 11:20, 26 April 2010



The filarial worms are of great importance in human medicine in the tropics, causing diseases such as elephantitis and river blindness, but their veterinary interest is limited - with the important exception of Dirofilaria, the canine heartworm, which is a major cause of morbidity and death in warmer, humid regions (including parts of the USA, Australia, southern Europe etc.).

General Appearance

  • Non-bursate
  • Typically, they are long (up to 12cm or more), but filamentous
  • Live in connective tissues
    • The most important veterinary species is Dirofilaria immitis which lives in the right heart and pulmonary arteries

General Life-Cycle

  • The females of most species do not produce eggs, but instead they produce motile embryos (microfilariae)
  • Female worm → microfilariae → accumulate in blood or tissue fluid

→ taken up by biting arthropod intermediate host

→ L1 → L2 → L3

→ enters wound

→ larvae develop and migrate to predilection site in final host

Dirofilaria immitis

Onchocerca spp.

Parafilaria spp.

Setaria spp.

Elaeophora scheideri

Stephanofilaria spp.

  • Filaroides osleri causes infection in tracheain gogs

Pages in category "Filarioidea"

The following 7 pages are in this category, out of 7 total.