Tracheal worms

Information and Technology Report 1999-0001



Infection by tracheal worms often results in respiratory distress due to their location in the trachea or bronchi and their obstruction of the air passage. Infections by these parasitic nematodes or roundworms in waterbirds, primarily ducks, geese, and swans, are usually due to Cyathostoma bronchialis and infection of land birds are usually due to Syngamus trachea. However, both genera infect a variety of species, including both land and waterbirds. Infections with S. trachea have been more extensively studied than infections with Cyathostoma sp. because of its previous importance as a disease-causing parasite of poultry in many parts of the world. Changes in husbandry practices to modern intensive methods for poultry production have essentially eliminated S. trachea as an agent of disease in chickens, but it is an occasional cause of disease in turkeys raised on range.

Publication type Report
Publication Subtype Federal Government Series
Title Tracheal worms
Series title Information and Technology Report
Series number 1999-0001
Year Published 1999
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) National Wildlife Health Center
Description 3 p.
Larger Work Type Report
Larger Work Subtype USGS Numbered Series
Larger Work Title Field manual of wildlife diseases: General field procedures and diseases of birds
First page 229
Last page 231
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