Sorensen R E, Kanev I, Fried B, Minchella D J
Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47907, USA.
J Parasitol. 1997 Feb;83(1):169-70.
Lymnaea elodes snails collected in northern Indiana, U.S.A., were infected with larval stages of an echinostome bearing 37 collar spines and resembling members of the Echinostoma group. The taxonomic status of this digenean was determined through experimental infections of various definitive and first-intermediate hosts. In addition, characteristics of the penetration and paraesophageal glands in cercariae from this echinostomatid were compared with those from E. revolutum and E. trivolvis. Results indicate that this recently discovered 37-collar-spined echinostome parasitizing lymnaeid snails is E. revolutum, making this the first clear report of this trematode in North America.
在美国印第安纳州北部采集的埃洛德椎实螺感染了一种棘口吸虫的幼虫阶段，该棘口吸虫有37个领棘，与棘口属的成员相似。通过对各种终末宿主和第一中间宿主进行实验性感染，确定了这种复殖吸虫的分类地位。此外，还将这种棘口吸虫尾蚴的穿透和食管旁腺特征与反曲棘口吸虫和三带棘口吸虫的尾蚴特征进行了比较。结果表明，这种最近发现的寄生于椎实螺的有37个领棘的棘口吸虫是反曲棘口吸虫，这是该吸虫在北美的首次明确报道。
