Pedersen E M, Maegga B T
Trop Med Parasitol. 1985 Dec;36(4):249-54.
A survey of the Simulium breeding and the transmission of Onchocerca volvulus was carried out in and around the Tukuyu valley, S.W. Tanzania, S. damnosum s.l. was found breeding in the midstretches of the main rivers in the valley and their bigger tributaries, and also in the boundary river to Malawi and the most northerly of the three rivers draining the Livingstone Mts. to Lake Nyasa (L. Malawi). A total of 19,500 S. damnosum s.l. females was caught and 13,200 dissected. The annual biting rate varied between 2,000 and 23,800. 7.6% of all the flies were infected with O. volvulus and 1.5% carried infective larvae in the head capsule, on average 2.7 per fly. The transmission was mainly in the dry season and the annual transmission potential varied between 0 and 1,120. The entomological data showed many similarities to those from the Mahenge Mts., Tanzania, and correlation of places with comparable transmission potentials suggests a similarity in the relationship parasite-human host between the West African rain forest and the two Tanzanian foci.
在坦桑尼亚西南部的图库尤山谷及其周边地区，对蚋的繁殖情况以及盘尾丝虫的传播进行了调查。发现大劣按蚊复合组（Simulium damnosum s.l.）在该山谷主要河流及其较大支流的中游段繁殖，也在与马拉维接壤的边界河流以及三条从利文斯通山脉流向马拉维湖（尼亚萨湖）的河流中最北部的那条河流中繁殖。总共捕获了19,500只大劣按蚊复合组雌蚊，解剖了13,200只。年叮咬率在2,000至23,800之间。所有苍蝇中有7.6%感染了盘尾丝虫，1.5%在头囊中携带感染性幼虫，平均每只苍蝇2.7条。传播主要发生在旱季，年传播潜力在0至1,120之间。昆虫学数据显示与坦桑尼亚马亨盖山脉的数据有许多相似之处，具有可比传播潜力的地点之间的相关性表明，西非雨林与坦桑尼亚的两个疫源地在寄生虫 - 人类宿主关系上具有相似性。
