Mesocestoides vogae Homepage
Common name: Tapeworm
Species: vogae (synonym: corti)
The gravid proglottid of the adult contains a paruterine organ in which the eggs are stored.
From left to right: Schematic illustration and photomicrograph of Mesocestoides scolex, Mesocestoides adult segments.
The life cycle is not completely known. Probably an orbatid mite or a coprophillic insect ingests the egg. A cysticercoid develops in the arthropod. When the 2nd intermediate host (amphibians, reptiles, birds, and mammals) ingests an infected arthropod, the cysticercoid is digested out and develops to a tetrathyridium in the peritoneal cavity. This larval form will multiply asexually. When the second intermediate host is eaten by a dog or other carnivore the tetrathyridium is digested out, the protoscolex attaches to the small intestinal wall and the worms begin to form proglottids. Gravid proglottids, containing the eggs, detach from the end of the worm and pass out in the feces. The prepatent period is about 16 to 20 days. The adult worms may multiply asexually in the definitive host's intestine. Also, the tetrathyridium, upon entering the definitive host, may go to the peritoneal cavity and multiply asexually.
Common Diagnostic Test
For adult tapeworms:
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