a genus of trematodes in the family Cyclocoelidae, parasites of aquatic birds.
found in the trachea, air sacs and esophagus of domestic and wild ducks; causes obstruction leading to dyspnea and asphyxia.
Tracheophilus cymbius (syn. Tracheophilus sisowi)
found in the trachea and bronchi of domestic and wild ducks; cause tracheal obstruction and asphyxia.