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18 Cards in this Set
- Front
- Back
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what is the common name for the family Metastrongylidea?
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lungworms
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where, in general, are metastrongyles found?
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respiratory system, some affect vascular/nervous system
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what, in general, is the lifecycle of metastrongyles?
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life cycle direct or indirect (snails, slugs, earthworms)
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where are Metastrongylus species found?
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bronchi of pigs
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what is the morphology of Metastrongylus species?
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15-60mm, 2 trilobed lips; copulatory bursa and long spicules
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what is the life cycle of Metastrongylus species?
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ingest infected earthworm > migrate to lungs > mature in lungs > adult worms produce larvated eggs > eggs coughed up, swallowed and passed in feces so larvated eggs or L1 in feces
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what is the pathogenesis of Metastrongylus species?
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reduced weight gain
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what are the clinical signs of Metastrongylus species?
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cough when stressed/excited
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what is the treatment of Metastrongylus species?
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fenbendazole/ivermectin or prevent access to earthworms
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how do we diagnose Metastrongylus species?
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baermann technique (larvated eggs or larvae in fresh feces)
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where do we find Aelurostrongylus abstrusus?
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lungs of cat
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what is the morphology of Aelurostrongylus abstrusus?
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up to 10mm, males have copulatory bursa, L1 larvae have kink/S-shape in tail
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what is the life cycle of Aelurostrongylus abstrusus?
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cats ingest infected snail/slug or infected paratenic host (bird) that has ingested L1 > matures to L3 in 2-5w > cat ingest L3 > migrates from stomach to lung > mature to adults in lung > mating and eggs > larvae hatch out in lung parenchyma > L1 coughed up, swallowed, L1 out in feces
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what is the pathogenesis of Aelurostrongylus abstrusus?
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the egg masses are small, grayish subpleural nodules in lung parenchyma > inflammatory nodules. Adult worms: smooth muscles hyperplasia, pulmonary hypertrophy, lung opacities
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what are the clinical signs of Aelurostrongylus abstrusus?
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chronic cough, anorexia, wasting, thoracic rads
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what is the prepatent period for Aelurostrongylus abstrusus?
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5-6wks
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what is the diagnosis for Aelurostrongylus abstrusus?
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Baermann or direct smear for L1 larvae in feces or sputum
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what is the treatment of Aelurostrongylus abstrusus?
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fenbendazole, ivermectin; restrict access to paratenic host
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