Monzon R B, Kitikoon V
Department of Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
Southeast Asian J Trop Med Public Health. 1989 Sep;20(3):453-60.
Adult flukes were obtained from laboratory rats and hamsters fed with metacercariae isolated from Lymnaea (Bullastra) cumingiana Pfeiffer and were identified as Echinostoma malayanum Leiper based on the presence of a circumoral collar of 43-45 spines and the highly lobed testes. This discovery is of public health significance because L. (Bullastra) cumingiana in eaten raw by certain local populations in northern Luzon. The proposed new species, Cathaemasia cabrerai (Jueco and Monzon, 1984), is probably invalid because it apparently was based on E. malayanum flukes that had lost their circumoral collar of spines after treatment with praziquantel and bithionol. This is the first case where L. (Bullastra) cumingiana has been proven to be of medical importance in the Philippines. i.e., as the natural second intermediate host of E. malayanum. The first intermediate host and reservoir host of this parasite in the country are still unknown. Previously, only E. ilocanum was reported to be present in the Philippines.
从喂食了从菲律宾扁卷螺（Bullastra）分离出的尾蚴的实验大鼠和仓鼠中获取成年吸虫，并根据其口周有43 - 45根棘的颈圈以及高度分叶的睾丸，将其鉴定为马来棘口吸虫（Echinostoma malayanum Leiper）。这一发现具有公共卫生意义，因为吕宋岛北部的某些当地人群会生食菲律宾扁卷螺。拟议的新物种卡布雷拉卡氏吸虫（Cathaemasia cabrerai (Jueco and Monzon, 1984)）可能无效，因为它显然是基于经吡喹酮和硫双二氯酚处理后失去口周棘圈的马来棘口吸虫。这是菲律宾扁卷螺被证明在医学上具有重要性的首例，即作为马来棘口吸虫的天然第二中间宿主。该国这种寄生虫的第一中间宿主和保虫宿主仍然未知。此前，据报道菲律宾仅存在伊洛坎棘口吸虫（E. ilocanum）。
