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