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  • Most worms in this superfamily inhabit the lungs or the blood vessels adjacent to the lungs. The typical life cycle is indirect, and the intermediate host is usually a mollusc.
  • They may be conveniently divided into three groups according to host; those occurring in pigs, in sheep and goats, and in the domestic carnivores.


Major Specie
F/H
I/H
Location/Site
Distribution
Metastrongylus apri
(syn. Elongatus)
M. salmi
M. pudendotectus
Pig
Earthworms
Small bronchi and bronchioles, especially those of the posterior lobes of the lungs
Worldwide
Muellerius capillaris,

Sheep and Goat
 snails and slugs

alveoli
Worldwide except for arctic and sub-arctic regions.
Proto-strongylus
snails.
small bron­chioles
Oslerus osleri
Domestic and wild dogs
Absent
Embedded in fibrous nodules in tracheal bifurcation and adjacent to bronchi.
Worldwide
Aelurostrongylus abstrusus
Cats.

Many mollusks
Lung parenchyma and small bronchioles
Worldwide
Crenosoma vulpis
Dogs and farmed foxes

Mainly land snails.

Trachea, bronchi, and bronchioles
Worldwide

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