Krishnamoorthy K, Rajendran G, Panicker K N
Vector Control Research Center, Indiranagar, Pondicherry, India.
Southeast Asian J Trop Med Public Health. 1994 Dec;25(4):760-5.
Prevalence of various aquatic vegetation and their role in supporting vector breeding were studied by drawing plant samples from natural fresh water habitats in Shertallai region which is endemic for Brugia malayi. As many as 30 aquatic plant species were identified in addition to the most abundant and preferred host plants such as Pistia stratiotes, Salvinia molesta and Eichhornia crassipes which are of major concern due to their contribution for vector proliferation. Fallow lands and paddy fields recorded relatively a higher number of plant species. Natural breeding of Mansonia, the vector mosquitos was observed in 16 of them. Using the data on the prevalence, proportion of samples positive for Mansonia breeding and immature density, two indices viz, natural hospitability Index (NH) and Mansonia host plant Index (MHI) were developed for each plant species. Ranking of these plants in relation to Mansonia breeding was done based on these indices. Monochoria vaginalis has been identified to be one of the most important auxiliary host plant. Three grasses viz, Hygrorhiza aristata, Sacciolepis interrupta and Leersia hexandra were found to support all the three species of Mansonia viz, Ma. annulifera, Ma. uniformis and Ma. indiana with considerable immature density. The inclusion of these plants for weed/vector control is emphasized.
通过从马来布鲁线虫流行的舍尔塔莱地区的天然淡水栖息地采集植物样本，研究了各种水生植被的流行情况及其在支持病媒繁殖方面的作用。除了水浮莲、大薸和凤眼莲等最丰富且最受青睐的寄主植物外，还鉴定出多达30种水生植物物种，由于它们对病媒繁殖的促进作用，这些植物备受关注。休耕地和稻田记录的植物物种数量相对较多。在其中16个地点观察到了病媒蚊虫曼蚊的自然繁殖情况。利用关于流行情况、曼蚊繁殖阳性样本比例和幼虫密度的数据，为每种植物物种制定了两个指数，即自然适宜性指数（NH）和曼蚊寄主植物指数（MHI）。根据这些指数对这些植物与曼蚊繁殖的关系进行了排名。雨久花被确定为最重要的辅助寄主植物之一。发现三种禾本科植物，即具芒水禾、间断囊颖草和李氏禾，能支持所有三种曼蚊，即环带曼蚊、单色曼蚊和印氏曼蚊，且幼虫密度可观。强调将这些植物纳入杂草/病媒控制措施。
