Raikova E V, Suppes V C, Hoffman G L
J Parasitol. 1979 Oct;65(5):804-10.
No significant differences in macro- and micromorphology were found between the parasitic stolon and free-living polyps of Polypodium sp. obtained from infected eggs of the North American acipenseriform fish Polyodon spathula and corresponding developmental stages of Polypodium hydriforme Ussov, parasitic in the Volga sterlet (Acipenser ruthenus). Therefore, both the American and the European forms of Polypodium belong to the species P. hydriforme Ussov.
从北美匙吻鲟（Polyodon spathula）受感染鱼卵中获得的多盘吸虫属（Polypodium sp.）寄生匍匐茎和自由生活的息肉，与寄生在伏尔加小体鲟（Acipenser ruthenus）体内的多盘水螅形吸虫（Polypodium hydriforme Ussov）的相应发育阶段相比，在宏观和微观形态上未发现显著差异。因此，多盘吸虫属的美洲和欧洲形态均属于多盘水螅形吸虫（P. hydriforme Ussov）物种。
