The endogenous cycle of Eimeria flavescens was studied in specific pathogen-free rabbits by means of histology and transmission electron microscopy. In total, five asexual generations were observed and two types of meronts and merozoites were found in each generation. Type A gave rise to a smaller number of thick polynucleate merozoites in which daughter merozoites were formed by endomerogony, while in the type B meronts slender uninucleate merozoites arose from ectomerogony. The first generation meronts were found in the crypts and proximal part of the villi of the duodenum and jejunum, whereas the three following generations developed in the superficial epithelium of the large intestine (cecum, vermiform appendix and colon). The last merogony as well as gamogony took place in crypts of the large intestine.

• MeSH
• Eimeria growth & development   pathogenicity   ultrastructure   MeSH
• Microscopy, Electron MeSH
• Coccidiosis parasitology   pathology   MeSH
• Rabbits parasitology   MeSH
• Specific Pathogen-Free Organisms MeSH
• Intestinal Diseases, Parasitic parasitology   pathology   MeSH
• Parasitic Diseases, Animal parasitology   pathology   MeSH
• Life Cycle Stages MeSH
• Intestinal Mucosa parasitology   pathology   MeSH
• Animals MeSH
• Check Tag
• Rabbits parasitology   MeSH
• Animals MeSH
• Publication type
• Journal Article MeSH
• Research Support, Non-U.S. Gov't MeSH