| discovery of a ciliate parasitoid of euphausiids off oregon, usa: collinia oregonensis n. sp. (apostomatida: colliniidae). | an apostome ciliate, collinia oregonensis n. sp., is reported inhabiting the cephalothorax and abdomen of 3 euphausiid species from the oregon-washington coast: euphausia pacifica hansen, 1911, thysanoessa spinifera holmes, 1900, and thysanoessa gregaria g.o. sars, 1883. this ciliate is the 7th species described for the genus collinia and the 2nd species known to infect euphausiids. disease progression and ciliate morphology are described using (1) modified protargol stain, (2) hematoxylin count ... | 2006 | 16921999 |