title: [Light and electron microscopic studies on the sporogenesis of Sphaerospora molnari in the gill lamellas of carp (Cyprinus carpio)].
abstract: The sporogenesis of Sphaerospora molnari in the gill lamellas of the common carp was investigated by light- and electron microscopy. Whereas pseudoplasmodia were not identified, the development from one secondary cell containing two tertiary cells to the mature spore was pursued. Monosporic sporoblasts surrounded by an envelope cell were observed lying isolated in the host tissue. Sporoblast generative cells differentiated into two capsulogenic cells, two mononucleate sporoplasms and two valvogenic cells. In the course of valvogenesis the latter lost their cytoplasmatic vacuoles to form the electron dense values of the mature spore. Via capsular primordia with external tubules polar capsules containing polar filaments developed in the capsulogenc cells. In contrast to valvogenic and capsulogenic cells, sporoplasms were not submitted to structural changes.
authors.affiliation: Experimentelle Pathologie, Deutsches Primatenzentrum Göttingen.
authors.forename: F J
authors.initials: FJ
authors.lastname: Kaup
authors.forename: E M
authors.initials: EM
authors.lastname: Kuhn
authors.forename: W
authors.initials: W
authors.lastname: Körting
mesh_terms: D000818:Animals; D001203:Ascomycota / Q000166:cytology* / Q000502:physiology* / Q000648:ultrastructure; D002347:Carps / Q000382:microbiology*; D005880:Gills / Q000382:microbiology*; D008854:Microscopy, Electron; D013172:Spores, Fungal