van der Hoek W, Amerasinghe F P, Konradsen F, Amerasinghe P H
International Irrigation Management Institute, Colombo, Sri Lanka.
Southeast Asian J Trop Med Public Health. 1998 Mar;29(1):168-72.
In and around a village in the Anuradhapura District of Sri Lanka anopheline larvae were sampled from July 1994 to April 1996 in all surface water bodies. Samples positive for Anopheles culicifacies, the established vector of malaria in Sri Lanka, and for An. barbirostris, An. vagus, and An. varuna, potential secondary vectors, were characterized by site, exposure to sunlight, substratum, turbidity of the water, presence of vegetation, and presence of fauna. Availability of pools of stagnant water in the stream near the village and along the edge of the village tank was highly predictive for presence of An. culicifacies larvae, independent from the other characteristics that were included in the study. The biological and physical characteristics could not very well explain the preference for certain habitats, but it was of interest that An. culicifacies, generally considered to bread in sun exposed clear water pools, was able to exploit habitats that were shaded and contained turbid water. Environmental management interventions to control An. culicifacies breeding have to take into account that the secondary vectors of malaria exploit other habitats and would not be affected by the interventions.
1994年7月至1996年4月期间，在斯里兰卡阿努拉德普勒区一个村庄及其周边地区，从所有地表水体中采集按蚊幼虫样本。对斯里兰卡已确定的疟疾传播媒介库氏按蚊以及潜在的次要传播媒介——须喙按蚊、迷走按蚊和环纹按蚊的阳性样本，按地点、阳光照射情况、底层物质、水体浑浊度、植被存在情况和动物存在情况进行了特征描述。村庄附近溪流和村庄池塘边缘死水潭的存在情况，对库氏按蚊幼虫的存在具有高度预测性，且与研究中纳入的其他特征无关。生物学和物理特征并不能很好地解释对某些栖息地的偏好，但有趣的是，通常认为在阳光照射的清澈水池中繁殖的库氏按蚊，能够利用阴暗且水体浑浊的栖息地。控制库氏按蚊繁殖的环境管理干预措施必须考虑到，疟疾的次要传播媒介利用其他栖息地，不会受到这些干预措施的影响。
