title: Eimeria duszynskii sp. n. (Protozoa: Eimeriidae), a parasite of the mottled sculpin, Cottus bairdi Girard.
abstract: Eimeria duszynskii sp. n. is described from 21 of 35 (60%) mottled sculpin, Cottus bairdi Girard, from the Provo River, Provo, Utah. Sporulated oocysts of E. duszynskii were spherical with a thin transparent oocyst wall and an average diameter of 12.2 (range, 11.6--12.9) micron. Micropyle, polar granules, and oocyst residuum were absent. Sporocysts were ovoid with one slightly flattened side and 6.0 (range, 5.2--6.3) X 9.1 (range, 8.4--10.0) micron in size. Sporocyst residuum was coarsely granular and compact. Stieda and substieda body were absent. Sporozoites had transverse banding on one end.
mesh_terms: D000818:Animals; D004539:Eimeria / Q000033:anatomy & histology / Q000145:classification* / Q000302:isolation & purification; D005399:Fishes / Q000469:parasitology*; D007422:Intestines / Q000469:parasitology; D014589:Utah