On the environment of Polymorphus minutus (Acanthocephala) in ducks.
D000818:Animals; D001831:Body Temperature; D004372:Ducks; D004463:Ecology; D004777:Environment; D005769:Gastrointestinal Motility; D006376:Helminths; D006863:Hydrogen-Ion Concentration; D007411:Intestinal Diseases, Parasitic / Q000662:veterinary*; D007413:Intestinal Mucosa; D007421:Intestine, Small; D009997:Osmotic Pressure