Fifty-five hatch-year common mergansers (Mergus merganser) were sampled for hematozoa from Douglas Lake (Michigan, USA) on 17 July 1995. Forty-one (75%) were infected with hematozoa. Haemoproteus greineri and Leucocytozoon simondi were common, infecting 28 (51%) and 26 (47%) common mergansers, respectively. Plasmodium circumflexum infected two (4%) birds. The common merganser is a new host record for H. greineri and P. circumflexum. Intensity data indicate possible negative interspecific interaction between H. greineri and L. simondi.
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1 April 2001
Hematozoa of Hatch-year Common Mergansers from Michigan
Randall J. DeJong,
Ronald L. Reimink,
Harvey D. Blankespoor

Journal of Wildlife Diseases
Vol. 37 • No. 2
April 2001
Vol. 37 • No. 2
April 2001
Anatidae
Haemoproteus greineri
interspecific interaction
Leucocytozoon simondi
Plasmodium circumflexum
survey
waterfowl