Affiliation of Cochlosoma to trichomonads confirmed by phylogenetic analysis of the small-subunit rRNA gene and a new family concept of the order Trichomonadida.

The protozoan genus Cochlosoma includes parasitic intestinal flagellates of birds and mammals of uncertain taxonomic classification. The presence of an adhesive disc, superficially similar to that of Giardia, led to a proposal that Cochlosoma should be classified as diplomonads. Careful morphological and ultrastructural observations, however, revealed conspicuous homologies to trichomonads.

Intranuclear development of asexual and sexual generations of Eimeria hermani Farr, 1953, the coccidian parasite of geese.

Both merogonic and gamogonic stages of Eimeria hermani occurred within the nucleus of epithelial cells of the intestine of experimentally infected goslings (Anser anser domesticus L.). They were located within a parasitophorous vacuole.

Life cycle and ultrastructure of Eimeria stigmosa, the intranuclear coccidian of the goose (Anser anser domesticus).

The oocyst morphology and endogenous development of Eimeria stigmosa Klimes, 1963 in a domestic goose (Anser anser domesticus L.) was studied using light and electron microscopy. The oocyst wall consisted of two layers.

The life cycle of Eimeria danailovi from ducks.

The life cycle of Eimeria danailovi Gräfner, Graubmann et Betke in experimentally infected ducks was studied by optical microscopy. The asexual generation developed in the posterior part of jejunum and in the whole ileum. The sexual stages occurred in jejunum and ileum, and, in addition, in cecum and colon.