title: Heterosporis schuberti n.sp., a new microsporidian parasite of aquarium fish.
abstract: Heterosporis schuberti n.sp. is described from the myocytes of an ornamental fish, Pseudocrenilabrus multicolor (Cichlidae). An apparently identical species was also found in Ancistrus cirrhosus (Loricariidae). Early meronts - uninucleate or plurinucleate - are perhaps responsible for dissemination of the infection throughout the muscle tissue. Later development of the microsporidian takes place in a structure encased with a thick envelope, for which the name sporophorocyst is proposed. At first, it contains merogony stages. Later, sporogony stages appear, too, which eventually prevail until a voluminous sporophorocyst is packed full with sporophorous vesicles with macrospores and rather rare microspores. Pleistophora anguillarumHoshina, 1951 reveals features similar enough to permit its reassignment to the genus HeterosporisSchubert, 1969.
authors.affiliation: Institute of Parasitology, Czechoslovak Academy of Sciences, České Budějovice, Czechoslovakia.
authors.forename: J
authors.initials: J
authors.lastname: Lom
authors.forename: I
authors.initials: I
authors.lastname: Dyková
authors.forename: W
authors.initials: W
authors.lastname: Körting
authors.forename: H
authors.initials: H
authors.lastname: Klinger