Light and electron microscope studies on the Sarcocystis of Rattus fuscipes,an Australian rat

Summary Light and electron microscope studies on the Sarcocystis of Rattus fuscipes showed that sarcocysts of two types occurred in this rat. These types could be distinguished from each other on the morphology of their cyst walls, on the size and micromorphology of their zoites, as well as by the changes they induced in the host cell. On the basis of these differences, it was concluded that the two sarcocyst types belonged to distinct Sarcocystis species. The possible life histories of the infections occurring in the rats were considered.Abbreviations A Amylopectin - C Conoid - CF Connected Tissue Fibres - CP Capillary - CW Cyst Wall - DC Daughter Cell - DCA Daughter Cell Anlagen - E Erythrocyte - FE Fibrillar Elements - GA Golgi Adjunct - GO Golgi Apparatus - GS Ground Substance - HC Host Cell - HCN Host Cell Nucleus - I Invagination - M Metrocyte - ME Merozoite - MI Mitochondrion - MIH Host Cell Mitochondrion - MN Micronemes - N Nucleus - NE Nucleus of Endothelial Cell - NR Neck Region - NU Nucleolus - OG Osmiophilic Granules - P Papilla - PI Pellicular Invagination - PR Projections - PW Primary Wall - RH Rhoptries - S Septum - SP Sarcoplasm - TS Thread-like Structures - Z ZoitesVisiting DAAD Research Fellow from the Department of Parasitology, University of Queensland, AustraliaSupported by the Deutsche Forschungsgemeinschaft