Cyathostoma

Cyathostoma
A genus of gapeworms of poultry in the nematode family Syngamidae, so called because of the gaping habit of fowl infected by these worms in their upper respiratory tract. [G. kyathos, cup, cup-shaped, + stoma, mouth]
- C. bronchialis a species found in wild geese and domestic ducks, geese, and swans; occurs in the larynx, trachea, and bronchi and causes distress and symptoms similar to those produced by the chicken gapeworm, Syngamus trachea; its life cycle is thought to be similar to that of Syngamus trachea.

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Cya·thos·to·ma (si″ə-thosґtə-mə) a genus of nematodes of the family Syngamidae that parasitizes the upper respiratory tract of birds.

Medical dictionary. 2011.

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