Difference between revisions of "Protostrongylus rufescens"
Jump to navigation
Jump to search
Ggaitskell (talk | contribs) |
|||
(11 intermediate revisions by 3 users not shown) | |||
Line 1: | Line 1: | ||
− | + | '''''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 [[Respiratory Parasitic Infections - Pathology#Protostrongylus spp.|bronchioles]] in sheep |
− | + | *Adult worms block small [[Bronchi and Bronchioles Inflammatory - Pathology#Infectious causes of bronchitis or bronchiolitis|bronchioles]] resulting in accumulation of eggs, larvae and cellular debri distal to the blockage | |
− | '' | + | *Lesions resemble [[Dictyocaulus filaria|''Dictyocaulus filaria'']] but are fewer in numbers, lobular and at periphery of caudal lobes, they are very similar to [[Muellerius|''Muellerius capillaris'']] lesions |
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
[[Category:Metastrongyloidea]] | [[Category:Metastrongyloidea]] | ||
− | + | [[Category:To_Do_-_Max]] | |
− | + | [[Category:Respiratory Parasitic Infections]][[Category:Sheep]] | |
− | [[Category: | ||
− |
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