title: Sarcocystis in American black ducks wintering in New Jersey.
abstract: Macrocysts of a protozoan parasite, Sarcocystis sp., were found in 28 of 173 American black ducks (Anas rubripes) examined during winters 1984-1985, 1985-1986 and 1986-1987 in south coastal New Jersey (USA). No macrocysts were detected in 80 juvenile black ducks. In adults, the prevalence of macrocysts increased from 3% (1 of 37) in 1984-1985, to 36% (12 of 33) in 1985-1986, and 65% (15 of 23) in 1986-1987. This increase could result in a greater number of harvested birds being discarded, or a change in the attitudes of waterfowl hunters towards black ducks.
authors.affiliation: Department Natural Resources, Cornell University, Ithaca, New York 14853.
authors.forename: G R
authors.initials: GR
authors.lastname: Costanzo
mesh_terms: D000818:Animals; D001715:Bird Diseases / Q000453:epidemiology*; D004372:Ducks / Q000469:parasitology*; D009132:Muscles / Q000469:parasitology; D009515:New Jersey / Q000453:epidemiology; D015995:Prevalence; D012522:Sarcocystis / Q000302:isolation & purification; D012523:Sarcocystosis / Q000453:epidemiology / Q000662:veterinary*; D012621:Seasons