title: Digenea, Nematoda, and Acanthocephala of two species of ducks from Ontario and eastern Canada.
mesh_terms: D000049:Acanthocephala; D000818:Animals; D002170:Canada; D004372:Ducks / Q000469:parasitology*; D005260:Female; D008297:Male; D009348:Nematoda; D009864:Ontario; D014200:Trematoda