Eimeria duszynskii sp. n. (Protozoa: Eimeriidae), a Parasite of the Mottled Sculpin, Cottus bairdi Girard

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Abstract
E. duszynskii sp. nov. is described from 21 of 35 (60%) mottled sculpin, C. bairdi Girard, from the Provo River, Provo, Utah [USA]. 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) .mu.m. Micropyle, polar granules and oocyst residuum were absent. Sporocysts were ovoid with 1 slightly flattened side and 6.0 (range, 5.2-6.3) .times. 9.1 (range, 8.4-10.0) .mu.m in size. Sporocyst residuum was coarsely granular and compact. Stieda and substieda body were absent. Sporozoites had transverse banding on one end. [E. duszynskii is compared with E. cotti Gauthier, E. ojibwana Molnar et Fernando, E. piraudi Gauthier and E. variabilis (Thelohan) Reichnow.].

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