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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. | + | *Bursate |
− | *Most members of this superfamily will look like short lengths of cotton (typically 0.5-2cm). | + | *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 spicules of each species have a characteristic shape |
− | *The heads have no distinct features. | + | *The heads have no distinct features |
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| == 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). | + | *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). | + | *Egg → L1 → L2 → L3 (this occurs on the ground) |
− | *The L1 and L2 feed on bacteria. | + | *L1 and L2 feed on bacteria |
− | *The L3 is the infective stage. | + | *L3 is the infective stage |
− | *The L3 is ensheathed (i.e. the L2 cuticle is retained after moulting as an "outer skin"). | + | *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. | + | *L3 cannot feed, but contains a finite amount of stored food to provide energy for movement |
− | *Infection is by ingestion of the L3. | + | *Infection is by ingestion of the L3 |
− | *L3 → L4 → adult (this occurs in the stomach or small intestine). | + | *L3 → L4 → adult (this occurs in the stomach or small intestine) |
− | *Parasitic development initially occurs in gastric glands or intestinal crypts (depending on species). | + | *Parasitic development initially occurs in gastric glands or intestinal crypts (depending on species) |
− | *Adults are on the mucosal surface. | + | *Adults are situated on the mucosal surface |
− | *The prepatent period is typically about 3weeks. | + | *The prepatent period is typically about 3 weeks |
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| [[Nematodirus]] | | [[Nematodirus]] |