摘要
目的： 探讨并殖吸虫中间宿主感染与其生态环境关系。方法： 选择福建省具有代表性地理地貌的卫氏并殖吸虫与斯氏狸殖吸虫流行区设点（ 村） ， 调查螺、蟹宿主感染及与感染相关的自然环境因素； 采检螺、蟹，以不同孳生环境螺的尾蚴阳性率与阳性蟹的囊蚴平均感染度进行比较。结果： 在岭阳村， 溪流型水流缓慢的Ⅰ段溪蟹的卫氏并殖囊蚴感染度为７２３９ 个／ 只， 比水流较急的坑沟型Ⅱ段溪的１４２６ 个／ 只高出５ 倍； 在溪口村，１９９６ 年放逸短沟蜷螺尾蚴阳性率与溪蟹卫氏并殖囊蚴感染度分别为４ ． ９ ％ 与１ ７３８３ 个／ 只， 比１９８２ 年的０２ ％与２０４７ 个／ 只分别高出２８９ 倍与８５ 倍； 在氵示上村， 常年渗水洼地流水浅水坑Ⅲ号沟拟钉螺尾蚴阳性率与溪蟹斯氏狸殖囊蚴感染度分别为４３ ％ 与３５５４ 个／ 只， 比同一水系的Ⅱ号沟的１ ％ 与４２９ 个／ 只分别高出４３ 与８３倍。结论： 卫氏并殖吸虫分布有一定的水系特征， 以水流缓慢小型水体处感染率居高。斯氏狸殖吸虫通常无明显水系分布特点， 而微型水体分布特征更为突出。适宜螺与蟹孳生的微型环境， 也是并殖吸虫完成其生活史循环适宜场所。对第一中间宿主的选择性及对生态环境的适应性，
AIM: To explore the relationship between the infection of the intermediate hosts of Paragonimus and their ecological environment.METHODS:Three different villages in Fujian Province were chosen to conduct the study.The infection of snails and crabs were surveyed.RESULTS:① In Ningyang Village, Wuyi mountain(stream type),the infection rate of the Potamon crabs (723\^9/each) in section Ⅰ(rapid stream) was 5 times higher than that in section Ⅱ(rapid stream) 142\^6/each. ② In Xikou Village, Mingching county( ditch type): The infection rate of the snails (Semisulcospira libertina ) to cercaria and the Potamon crabs were 4\^2% and 1 738\^3/each, respectively in 1996, being 28\^9 and 8\^5 times higher than those ( 0\^2% and 204\^7/each) in 1982.③ In Jishang Village, Jianou City,the infection rate of the snails ( Tricula ) and the Potamon crabs were 4\^3% and 355\^4/each respectively in ditch Ⅲ, 4\^3 and 8\^3 times higher than those (1% and 42\^9%/each) in ditch Ⅱ.CONCLUSION: P.westermani distributed along the stream system, usually concentrating in the small, slow\|running water bodies of the stream. P.skrjabini distributed in still smaller water bodies.The environment suitable for the breedings of the snails and crabs are also the suitable places for Paragonimus parasites to complete their life cycles.
出处
《中国寄生虫学与寄生虫病杂志》
CAS
CSCD
北大核心
1999年第4期212-214,共3页
Chinese Journal of Parasitology and Parasitic Diseases
关键词
并殖吸虫
螺蟹
宿主
微型生态环境
Paragonimus, snail, crab, host, small ecological environment
