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the chicken gapeworm; causes upper respiratory infestation leading to dyspnea, and sometimes death; intermediate hosts are earthworms.
a genus of nematodes in the family Syngamidae.
a cause of chronic nasopharyngitis in cats in Puerto Rico.
found in the larynx of cattle.
found in the nasal cavities of ruminants.
found in the domestic goose and in chickens.
found in fowl, turkey, pheasant, guinea fowl, goose and wild birds. Causes pneumonia while migrating through the lungs. In the trachea causes tracheitis and anemia because of heavy blood-sucking. The predominant clinical signs are dyspnea, head shaking and spasmodic gaping.