| endogenous development and pathogenicity of eimeria angusta in the ruffed grouse, bonasa umbellus. | oocysts of eimeria angusta were recovered from the cecum of a captive ruffed grouse which died of coccidial typhlitis. five experimental passages were made in grouse over a 2-yr period. prepatent period was 6.5-7.0 days; sporulation time at 22 c was 54-60 hr. endogenous stages were not found in grouse killed 1 and 2 days after inoculation (dai). a few immature schizonts were in cecal epithelium 4 dai. developing and mature schizonts, and undifferentiated gamonts were in cecal epithelium 5 dai. d ... | 1984 | 6737604 |