title: A Dermocystidium infection in Trichomycterus sp. (Osteichthyes, Trichomycteridae).
abstract: Two whitish elongate cysts in the left pectoral fin of Trichomycterus sp. (Osteichthyes, Trichomycteridae) were packed with Dermocystidium sp. spores. The spores were spherical and had a large PAS positive central refractile body, the cytoplasm being restricted to a narrow peripheral layer containing the nucleus. The cysts were surrounded by a thin homogeneous wall of parasite origin, and there was no encapsulation of the cysts by host tissue.
authors.affiliation: Departamento de Zoologia e Antropologia, Faculdade de Ciências, Universidade do Porto, 4099-002 Porto, Portugal. jceiras@fc.up.pt
authors.forename: J C
authors.initials: JC
authors.lastname: Eiras
authors.forename: A T
authors.initials: AT
authors.lastname: Silva-Souza
mesh_terms: D000818:Animals; D003560:Cysts / Q000175:diagnosis / Q000469:parasitology / Q000662:veterinary*; D005057:Eukaryotic Cells; D005393:Fish Diseases / Q000175:diagnosis* / Q000469:parasitology; D005399:Fishes; D011529:Protozoan Infections, Animal / Q000175:diagnosis* / Q000469:parasitology; D012871:Skin Diseases / Q000175:diagnosis / Q000469:parasitology / Q000662:veterinary