Difference between revisions of "Protostrongylus rufescens"
Jump to navigation
Jump to search
| Line 20: | Line 20: | ||
[[Category:Metastrongyloidea]] | [[Category:Metastrongyloidea]] | ||
| − | [[Category:To_Do_- | + | [[Category:To_Do_-_Max]] |
[[Category:Respiratory Parasitic Infections]][[Category:Sheep]] | [[Category:Respiratory Parasitic Infections]][[Category:Sheep]] | ||
Revision as of 13:48, 30 July 2010
Protostrongylus species
Life-Cycles
- Indirect life-cycle involving mollusc intermediate hosts
- L1 passed in faeces, penetrate foot of mollusc, develop to L3 in 2-3 weeks
- Infected mollusc ingested with grass
- L3 released by digestion and travel to lungs by lymphatic route
- Adults found in alveoli/parenchyma (Muellerius) or small bronchioles (Protostrongylus)
- Prepatent period 6-10 weeks (Muellerius), 5-6 weeks (Protostrongylus)
Epidemiology
- High prevalence because of wide range of intermediate hosts, prolonged survival of larvae in faeces, long periods of patency (>2 years) and poor host immunity
- Protostrongylus spp. can block bronchioles in sheep
- Adult worms block small bronchioles resulting in accumulation of eggs, larvae and cellular debri distal to the blockage
- Lesions resemble Dictyocaulus filaria but are fewer in numbers, lobular and at periphery of caudal lobes, they are very similar to Muellerius capillaris lesions