Doanh Pham Ngoc, Shinohara Akio, Horii Yoichiro, Habe Shigehisa, Nawa Yukifumi
Department of Parasitology, Institute of Ecology and Biological Resources, Vietnamese Academy of Science and Technology, Hanoi, Vietnam.
Parasitol Res. 2009 Apr;104(5):1149-55. doi: 10.1007/s00436-008-1302-z. Epub 2008 Dec 13.
Paragonimus westermani is the most well-known species among the genus Paragonimus. It is widely distributed in Asia with considerable genetic diversity to form P. westermani species complex. While P. westermani distributed in Japan, Korea, China, and Taiwan are genetically homogeneous to form the East Asia group, those found in other geographic areas are heterogeneous and would be divided into several groups. Recent discoveries of P. westermani in India and Sri Lanka highlighted new insights on molecular phylogenetic relationship of geographic isolates of this species complex. Since Vietnam is located at the east end of Southeast Asia, the intermediate position between South and East Asia, it is of interest to see whether P. westermani is distributed in this country. Here, we report that P. westermani metacercariae were found in mountainous crabs, Potamiscus sp., collected in Quangtri province in the central Vietnam. Adult worms were successfully obtained by experimental infection in cats. Molecular phylogenetic analyses revealed that P. westermani of Vietnamese isolates have high similarities with those of East Asia group.
卫氏并殖吸虫是并殖吸虫属中最著名的物种。它广泛分布于亚洲，具有相当大的遗传多样性，形成了卫氏并殖吸虫物种复合体。虽然分布在日本、韩国、中国和台湾的卫氏并殖吸虫在基因上是同质的，形成了东亚群体，但在其他地理区域发现的卫氏并殖吸虫是异质的，可分为几个群体。最近在印度和斯里兰卡发现的卫氏并殖吸虫突出了对该物种复合体地理分离株分子系统发育关系的新见解。由于越南位于东南亚的东端，处于南亚和东亚之间的中间位置，因此有必要了解该国是否分布有卫氏并殖吸虫。在此，我们报告在越南中部广治省采集的山区螃蟹Potamiscus sp.中发现了卫氏并殖吸虫囊蚴。通过在猫身上进行实验性感染成功获得了成虫。分子系统发育分析表明，越南分离株的卫氏并殖吸虫与东亚群体的卫氏并殖吸虫具有高度相似性。
