BIOL 4105 Chapter : 7 9 12 Tapes Werent Finished
Document Summary
Humans are intermediate: gravid proglottids disintegrates and eggs come out with feces. Has an armed scolex with 4 suckers: sylvan cycles among wild animals, domestic cycle: threat to most humans from dog feces. Turkana tribe consider wild dog intestine a delicacy- char it on the outside, raw inside, eat it. Ingest the tapes, each with a gravid proglottids. Eating the proglottids, the oncospheres in them head out to create the cysts. This club does not bury their dead- the bodies are left for predators to eat in the brush: dx- never biopsy a cyst. It will cause a rupture: imaging: radiographs, ct scans, mri, elisa- use hydatid fluid as ag to detect host ab, high false negative rate in individuals with intact cyst. Echinococcus multilocularis: small fox tapeworm, nasty parasite, but you are less likely ot enter this life cycle, definitive host: wild carnivores, foxes, wolves, coyotes. Intermediate hosts: rodents: egg is infective stage for humans.
