Difference between revisions of "Trichostrongyloidea"

From WikiVet English
Jump to navigation Jump to search
(Redirected page to Category:Trichostrongyloidea)
 
(One intermediate revision by the same user not shown)
Line 1: Line 1:
{{unfinished}}
 
  
== General Appearance ==
+
#REDIRECT[[:Category:Trichostrongyloidea]]
[[Image:Trichostrongylus.jpg|thumb|right|150px|''Trichostrongylus'' - Joaquim Castellà Veterinary Parasitology Universitat Autònoma de Barcelona]]
 
*Bursate
 
*Most members of this superfamily look like short lengths of cotton (typically 0.5-2cm)
 
*The spicules of each species have a characteristic shape
 
*The heads have no distinct features
 
 
 
== General Life-Cycle ==
 
*The egg is approximately 80µm long, oval, thin-shelled, contains 4-16cells (i.e. it is a typical strongyle egg)
 
*Egg → L1 → L2 → L3 (this occurs on the ground)
 
*L1 and L2 feed on bacteria
 
*L3 is the infective stage
 
*L3 is ensheathed (i.e. the L2 cuticle is retained after moulting as an "outer skin")
 
*L3 cannot feed, but contains a finite amount of stored food to provide energy for movement
 
*Infection is by ingestion of the L3
 
*L3 → L4 → adult (this occurs in the stomach or small intestine)
 
*Parasitic development initially occurs in gastric glands or intestinal crypts (depending on species)
 
*Adults are situated on the mucosal surface
 
*The prepatent period is typically about 3 weeks
 
 
 
<big>
 
'''[[Ostertagia]]
 
 
 
'''[[Nematodirus]]
 
 
 
'''[[Dictyocaulus]]
 
</big>
 
 
 
[[Category:Bursate Nematodes]]
 
[[Category:Trichostrongyloidea]]
 

Latest revision as of 21:58, 21 April 2010