Ali Sofi Imtiyaz, Gopalakrishnan B, Venkatesalu V
a Department of Botany , Annamalai University , Annamalainagar , India.
Nat Prod Res. 2019 May;33(10):1463-1466. doi: 10.1080/14786419.2017.1416374. Epub 2017 Dec 18.
The diseases vectored by mosquitoes continue to be a main cause of illnesses and death throughout the world. The methanol extract of male flower was screened for larvicidal activity against three therapeutically important mosquito vectors viz., malarial vector, ; dengue vector, and the filarial vector, . The larvicidal activity was assayed against the early fourth-instar larvae of tested mosquito species at a concentration ranging from 12.5 to 200 ppm under laboratory conditions. The methanol extract recorded significant mortality against the early fourth-instar larvae of the tested species. After 12 and 24 h of exposure period, the highest effect was recorded in with LC values of 139.87 and 59.80 ppm and LC values of 288.96 and 166.73 ppm, respectively, followed by and . The results could be useful in search for newer, safer and more effective natural larvicidal agents.
蚊子传播的疾病仍然是全球疾病和死亡的主要原因。对雄花的甲醇提取物进行了筛选，以检测其对三种具有重要治疗意义的蚊子媒介的杀幼虫活性，即疟疾媒介、登革热媒介和丝虫病媒介。在实验室条件下，以12.5至200 ppm的浓度对受试蚊虫种类的早期四龄幼虫进行了杀幼虫活性测定。甲醇提取物对受试种类的早期四龄幼虫有显著的致死率。暴露12小时和24小时后， 表现出最高效果，其LC值分别为139.87和59.80 ppm， 的LC值分别为288.96和166.73 ppm，其次是 和 。这些结果可能有助于寻找更新、更安全和更有效的天然杀幼虫剂。
