【摘要】 异盘并殖吸虫囊蚴经口感染豚鼠、家兔和大鼠，２０～７０ｄ分期解剖。从上述动物的胸腔、腹腔、肝脏、肺和肌肉中，均检获虫体。豚鼠感染２０ｄ后，虫体发育出现分化。体腔和肝脏的虫体，发育迅速，生殖器官雏形可见。肌肉中虫体发育缓慢。感染４０ｄ～５０ｄ，豚鼠和家兔肺部均有虫囊形成，虫体多集中于体腔。此时，多数动物都因大型童虫穿破血管，导致胸腔积血而死亡。ｗｉｓｔａｒ和ＳＤ两种品系大鼠均为适宜终宿主，感染７０ｄ后，ｗｉｓｔａｒ鼠除肺部有虫囊形成外，肝脏也获多个虫囊，囊内虫体发育良好，子宫内充满虫卵。将大鼠体内所获５０条小型童虫，经口感染家犬１只，６２ｄ后，从犬肺虫囊与胸腔中共获成虫１２条。更多还原

【Abstract】 Guinea pigs, rabbits and rats were infected orally each with 20-100 metacercariae of Paragonimus heterotremus . 20-70 days after infection, the worms were recovered from pleural cavity, abdominal cavity, lungs, liver and muscles of animals above. 20 days after infection, some worms in body cavities and livers of guinea pigs developed quickly. 40-50 days after infection, worm cysts were formed in lungs of guinea pigs and rabbits. Rats are favourable hosts. 70 days after infection, worms matured in worm cysts of lungs and liver, but the worms detected in muscles were still stunted. When small juveniles obtained from rats were transferred orally to a dog, they matured in lungs.The results showed that host transfer between final hosts can induce transmission of P. heterotermus .更多还原