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, 10:27, 26 April 2010
== Gastrointestinal Nematodes ==
==== Introduction ====
[[Image:Parascaris equorum.jpg|thumb|right|150px|''Parascaris equorum'' - Joaquim Castellà Veterinary Parasitology Universitat Autònoma de Barcelona]]
[[Image:Parascaris equorum2.jpg|thumb|right|150px|''Parascaris equorum'' - Joaquim Castellà Veterinary Parasitology Universitat Autònoma de Barcelona]]
[[Image:Parascaris equorum3.jpg|thumb|right|150px|''Parascaris equorum'' - Joaquim Castellà Veterinary Parasitology Universitat Autònoma de Barcelona]]
[[Image:Parascaris equorum4.jpg|thumb|right|150px|''Parascaris equorum'' - Joaquim Castellà Veterinary Parasitology Universitat Autònoma de Barcelona]]
[[Image:Strongylus.jpg|thumb|right|150px|''Strongylus'' - Joaquim Castellà Veterinary Parasitology Universitat Autònoma de Barcelona]]
Many nematode species occur in the equine gastrointestinal tract, although not all are of equal importance:
{| style="width:75%; height:200px" border="1"
!'''Stomach'''
!'''Small Intestine'''
!'''Large Intestine'''
|-
|
*''Habronema (Draschia)''
*''Trichostrongylus axei''
|
*''Parascaris''
*''Strongyloides''
|
*''Strongylus'' species
*Cyathostomins
*''Triodontophorus'' species
*''Oxyuris equi''
|-
|}
== Strongyles (Red worms) ==
The strongyles that occur in the horse can be divided on the basis of size into two groups
*'''Large''' strongyles
**''Strongylus'' species (3 species; used to be widespread prior to the introduction of worm control programmes; now uncommon)
**''Triodontophorus'' species (common)
*'''Small''' strongyles
**Also known as Cyathostomins (preferred term), cyathostomes, trichonemes or small redworms
**Cyathostomins (widespread, including 4 genera and over 40 species of worms)
[[Category:Nematodes]][[Category:Horse]]