Dictyocaulus viviparus
Taxonomy
- Kingdom Animalia
- Phylum Nematoda
- Class Secernentea
- Order Strongylida
- Superfamily Trichostrongyloidea
- Family Dictyocaulidae
- Genus Dictyocaulus
Final host
Cattle, buffalo, deer, camel
Morphology
Adults (≈ 3-8 cm long) lack of buccal capsule and have a strongyloid oesophagus Males have a small copulatory bursa with short and stout spicules L1 (≈ 390-450 µm) have a rounded head without a protruding anterior knob (cf. D. filaria in small ruminants), the intestinal cells contain numerous brownish granules and the tail terminates in a blunt point
Cycle
Direct (with larval migration via lymph and blood to the lungs)
Location
Trachea, lung (tracheo-bronchial bifurcation)
Feeding
Tracheal - bronchial content
Diagnostic
L1
Transmission
L3
