title: Blood parasites of trumpeter swans, Olor buccinator (Richardson), from Alberta.
abstract: A total of 75 trumpeter swans (Olor buccinator (Richardson) from the Grande Prairie region of Alberta was examined for hematozoa; 26 (34.6%) swans were infected with Haemoproteus nettionis. A single infection of Leucocytozoon simondi and two of Plasmodium circumflexum also were recorded. Local, second year (SY) and adult (AHY) female swans had closely similar rates of hematozoan infection; the SY and AHY male swans had substantially higher infection rates than other subgroups.
mesh_terms: D000367:Age Factors; D000416:Alberta; D000818:Animals; D000835:Animals, Wild; D001715:Bird Diseases / Q000453:epidemiology*; D001717:Birds / Q000469:parasitology; D001769:Blood / Q000469:parasitology*; D005260:Female; D008297:Male; D010272:Parasitic Diseases / Q000453:epidemiology; D010273:Parasitic Diseases, Animal; D012621:Seasons; D012737:Sex Factors; D013045:Species Specificity