Wang Jiun-Jye, Chung Lee-Yii, Lee June-Der, Chang Eddy-Essen, Chen Eng-Rin, Chao David, Yen Chuan-Min
Department of Parasitology, Kaohsiung Medical University, Taiwan, Republic of China.
J Helminthol. 2002 Jun;76(2):185-8. doi: 10.1079/JOH2002114.
Snails and freshwater fish were examined from four ponds in the Meinung township in which Clonorchis sinensis was known to be endemic 18 years ago. No metacercariae were found in 478 Tilapia nilotica, whereas of 451 Ctenopharyngodon idellus examined, 16.2%, 3.3% and 0.9% were found to be infected with Haplorchis pumilio, H. taichui and Clonorchis sinensis, respectively. In addition, there were some unidentified metacercariae in 12.0% of Ctenopharyngodon idellus examined. Overall, no positive correlation between infection rates and sizes of infected fish was shown. Six species of snails were collected in this survey and two frequently-occurring snails, Melanoides tuberculata and Thiara granifera were commonly infected with H. pumilio. Reasons for the prevalence of Haplorchis species and the absence of Clonorchis sinensis in fish and snail hosts in a previously reported endemic area for human clonorchiasis are discussed.
对 Meinung 乡四个池塘中的蜗牛和淡水鱼进行了检查，18 年前已知华支睾吸虫在该乡呈地方性流行。在 478 条尼罗罗非鱼中未发现囊蚴，而在检查的 451 条草鱼中，分别有 16.2%、3.3%和 0.9%被短小异形吸虫、台湾异形吸虫和华支睾吸虫感染。此外，在检查的 12.0%的草鱼中发现了一些未鉴定的囊蚴。总体而言，感染率与感染鱼的大小之间未显示出正相关。本次调查收集到六种蜗牛，两种常见蜗牛，即瘤拟黑螺和颗粒织纹螺，通常感染短小异形吸虫。讨论了在先前报道的人类华支睾吸虫病流行区鱼类和蜗牛宿主中异形吸虫属流行以及未发现华支睾吸虫的原因。
