Kanazawa T, Hata H, Kojima S, Yokogawa M
Parasitol Res. 1987;73(2):140-5. doi: 10.1007/BF00536470.
Recent studies on chromosomes have shown the presence of diploid and triploid types of Paragonimus westermani. To determine any possible biological differences between them, the migration route and development of the diploid type in the final hosts were compared with those of the triploid type. In the cat, the definitive host, larvae of the diploid type migrated to the abdominal wall, remained there for two weeks, and then migrated to the lung. In the rat, the abnormal host, some orally administered metacercariae of the diploid type made cysts in the lung and laid eggs, but the triploid type did not lay any eggs. Neither type of P. westermani migrated to the liver of the rat, in contrast to the previously reported fact that P. miyazakii and P. ohirai migrate to the liver and develop there. From these results, it seems likely that the two types of P. westermani are closely related.
近期对染色体的研究表明，存在二倍体型和三倍体型的卫氏并殖吸虫。为确定它们之间可能存在的生物学差异，将二倍体型在终末宿主体内的迁移途径和发育情况与三倍体型进行了比较。在终末宿主猫体内，二倍体型幼虫迁移至腹壁，在那里停留两周，然后迁移至肺部。在异常宿主大鼠体内，口服的二倍体型囊蚴有些在肺部形成囊肿并产卵，但三倍体型不产卵。与先前报道的宫崎并殖吸虫和大平并殖吸虫迁移至肝脏并在那里发育的事实相反，两种类型的卫氏并殖吸虫均未迁移至大鼠肝脏。从这些结果来看，两种类型的卫氏并殖吸虫似乎关系密切。
