芜湖地区台湾次睾吸虫自然疫源地调查  

Investigation of natural foci of Metorchis taiwanensis in Wuhu area

作　　者：段彬彬[1] 宋红玉[1] 陶宁[1] 李朝品[1] 

机构地区：[1]皖南医学院医学寄生虫学教研室,芜湖241002

出　　处：《中国血吸虫病防治杂志》2015年第5期526-528,共3页Chinese Journal of Schistosomiasis Control

摘　　要：目的调查芜湖地区是否存在台湾次睾吸虫的自然疫源地。方法现场调查生态环境与居民日常生活习惯;采用水洗沉淀法检验当地居民饲养的家鸭粪便中的台湾次睾吸虫虫卵;采用压片法分离纹沼螺体内的雷蚴、尾蚴;采用匀浆法分离麦穗鱼体内的囊蚴;采取直接喂入方法用台湾次睾吸虫囊蚴或含囊蚴的麦穗鱼人工感染雏鸭;解剖家鸭的胆囊和胆管,分离台湾次睾吸虫成虫。结果本次调查结果显示,该区域湖河(江)交错,植被丰富,灌木杂草丛生,水生植物、淡水螺类和鱼类资源丰富,是家鸭养殖和多种水鸟适宜的栖息地。家鸭粪便中台湾次睾吸虫卵的平均检出率为33.33%(10/30);纹沼螺体内台湾次睾吸虫雷蚴和尾蚴的检出率为1.17%(7/600);麦穗鱼体内囊蚴的检出率为13.33%(8/60);人工感染的3组雏鸭中,第一组和第二组分别检出台湾次睾吸虫成虫31条和8条,第三组未检出;家鸭自然感染台湾次睾吸虫的感染率为23.33%(7/30)。结论芜湖地区有台湾次睾吸虫流行,该地区是适宜台湾次睾吸虫流行的自然疫源地。Objective To explore the existence of natural foci of Metorchis taiwanensis in Wuhu area. Methods The ecological environment and daily living habits of residents were investigated;the eggs of M. taiwanensis in the dung of ducks in local region were collected by the sedimentation method;the Parafossarulus striatulus were disposed by the tabletting method and examined with a microscope to isolate the rediae and cercariae;the metacercariae in Pseudorasbora parve were isolated by using the homogenation. The duckling were fed directively by metacercaria of M. taiwanensis or by P. parve infected with metacercaria of M. taiwanensis for artificial infection,and M. taiwanensis were separated from ducks by dissecting the gallbladder and bile ducts. Results The survey revealed that there were staggered lake river,rich vegetation,overgrown shrubs,aquatic plants,rich variety of freshwater snails and fish resources in Wuhu area,and it was home to a variety of waterfowl and duck. The average detection rate of eggs of M. tanwanensis in stool of ducks was 33.33%（10/30）;that of rediae and cercarriae in P. striatulus was 1.17%（7/600）;and that of encysted metacercaria in P. parve was 13.33%（8/60）;the number of M. taiwanensis detected in the infected ducklings in 3 groups were 31,8 and 0, respectively, the natural M. tanwanensis infection rate of ducks was 23.33%（7/30）. Conclusion We have confirmed the existence of natural foci of M. tanwanensis in Wuhu area.

关 键 词：台湾次睾吸虫 自然疫源地 调查 芜湖地区 

分 类 号：R383.2[医药卫生—医学寄生虫学]