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| Keywords: Dipylidium LifeCycle.png Gravid proglottids are passed intact in the feces or emerge from the perianal region of the host Subsequently they release typical egg packets On rare occasions proglottids rupture and egg packets are seen in stool samples Following ingestion of an egg by the intermediate host larval stages of the dog or cat flea Ctenocephalides spp an oncosphere is released into the flea's intestine The oncosphere penetrates the intestinal wall invades the insect's hemocoel body cavity and develops into a cysticercoid larva The larva develops into an adult and the adult flea harbours the infective cysticercoid The vertebrate host becomes infected by ingesting the adult flea containing the cysticercoid The dog is the principal definitive host for Dipylidium caninum Other potential hosts include cats foxes and humans mostly children Humans acquire infection by ingesting the cysticercoid contaminated flea This can be promulgated by close contact between children and their infected pets In the small intestine of the vertebrate host the cysticercoid develops into the adult tapeworm which reaches maturity about 1 month after infection The adult tapeworms measuring up to 60 cm in length and 3 mm in width reside in the small intestine of the host where they each attach by their scolex They produce proglottids or segments which have two genital pores hence the name double-pored tapeworm The proglottids mature become gravid detach from the tapeworm and migrate to the anus or are passed in the stool PD-USGov Dipylidium life cycle Original upload log wikitable - - 2007-10-18 18 04 18 560 × 435 29355 bytes Filip em <nowiki>Gravid proglottids are passed intact in the feces or emerge from the perianal region of the host Subsequently they release typical egg packets On rare occasions proglottids rupture and egg packets are seen in stool samples Following ingestion of </nowiki> CDC lifecycles Life cycles of cestodes | ||||
