Cyathostomins
The cyathostomins are a large group of genera and species of closely related nematodes that live as adults in the large intestine of horses around the world, including Canada.
Dictyocaulus arnfieldi
The lung nematode Dictyocaulus arnfieldi occurs in horses and other equids in many parts of the world, including rarely in Canada.
Habronema species and Draschia species
Habronema and Draschia are small nematodes that as adults inhabit the stomach of horses.
Onchocerca cervicalis
The nematode Onchocerca cervicalis occurs in horses in many regions of the world where suitable midge intermediate hosts (Culicoides species) are also present.
Oxyuris equi
The pinworm nematode Oxyuris equi occurs in horses around the world, including Canada.
Parascaris equorum
The ascarid nematode Parascaris equorum occurs in horses around the world, including Canada.
Setaria species
Nematodes of the genus Setaria infect cattle, sheep, sometimes other domestic animal hosts, and many free-ranging ungulates around the world, including in Canada.
Setaria species — pigs
Nematodes of the genus Setaria infect cattle, sheep, sometimes other domestic animal hosts, and many free-ranging ungulates around the world, including in Canada.
Strongyloides westeri
The nematode Strongyloides westeri occurs in horses around the world, including Canada.
Strongylus edentatus
The nematode Strongylus edentatus occurs in horses around the world, including Canada.
Strongylus equinus
The nematode Strongylus equinus occurs in horses around the world, including Canada.