Difference between revisions of "Strongyloidea"

From WikiVet English
Jump to navigation Jump to search
Line 12: Line 12:
  
 
== General Appearance ==
 
== General Appearance ==
[[Image:Strongyloides stercoralis 2.jpg|thumb|right|150px|''Strongyloides stercoralis'' - Courtesy of the Laboratory of Parasitology, University of Pennsylvania School of Veterinary Medicine]]
+
 
[[Image:Strongyloides stercoralis.jpg|thumb|right|150px|''Strongyloides stercoralis'' - Joaquim Castellà Veterinary Parasitology Universitat Autònoma de Barcelona]]
 
[[Image:Strongyloides larvae.jpg|thumb|right|150px|''Strongyloides'' larvae - Joaquim Castellà Veterinary Parasitology Universitat Autònoma de Barcelona]]
 
[[Image:Strongyloides.jpg|thumb|right|150px|''Strongyloides'' - Joaquim Castellà Veterinary Parasitology Universitat Autònoma de Barcelona]]
 
 
*Bursate
 
*Bursate
 
*Large buccal capsule
 
*Large buccal capsule

Revision as of 10:36, 26 April 2010



Infectious agents and parasitesWikiBugs Banner.png
PARASITES
NEMATODES



General Appearance

  • Bursate
  • Large buccal capsule
  • Relatively short (typically 1-5cm) but stout
  • Heads often have characteristic features - teeth or cutting plates

General Life-Cycle

  • Like that of the trichostrongyloids (eggs are also 'typical strongyle eggs'), but:
    • L3 → L4 → adult (typically occurs in the large intestine)
    • Larvae penetrate the mucosal wall and elicit nodule formation
    • Larvae of some species migrate around the body
    • Prepatent period varies between species from 3 weeks to over 6 months

Strongylus vulgaris

Peritonitis in sheep by penetration of intestines by larvae of Oesophagostomum columbianum

Strongylus edentatus and Strongylus equinus migrate through Peritoneal Cavity Parasitic - Pathology

Stephanuris dentatus causes peritonitis in pigs Peritoneal Cavity Parasitic - Pathology and may cause cysts in the pancreas

Syngamus laryngeus in larynx of cattle