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首页> 外文期刊>Scientia Africana: An International Journal of Pure & Applied Sciences >INVESTIGATION OF HIBISCUS SABDARIFFA AS A NEW ECO-FRIENDLY PHOTO-LARVICIDAL NATURAL PRODUCT FOR THE CONTROL OF MOSQUITOES
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INVESTIGATION OF HIBISCUS SABDARIFFA AS A NEW ECO-FRIENDLY PHOTO-LARVICIDAL NATURAL PRODUCT FOR THE CONTROL OF MOSQUITOES

机译：木槿SABDARIFFA作为一种新的环保型光杀幼虫天然产品用于控制蚊子的研究

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摘要

The Culex spp. is a vector of several disease-causing organisms including filarial parasites, encephalitis virus and the West Nile Virus; the control of these diseases is hinged on controlling the vector. Synthetic insecticides have previously been applied in the control of Culex spp. which poses a danger to the environment. In the present research, the use of light and a naturally occurring product, methanol extract of Hibiscus sabdariffa calyces (HSME), in controlling the breeding and spread of Culex tritaeniorhynochus was investigated. Third instar larvae of C. tritaeniorhynochus were fed with HSME and exposed to light for 18 hours. Results indicate over 80% mortality of the test sample with LC_(50) of 528.44 ppm; also increase in percentage mortality with corresponding increase in HSME concentration and longer irradiation time was established. The trend observed in light reactions was not seen in the control and dark reactions, implying that the presence of light and the photo sensitizer (HSME) is required to induce mortality in Culex tritaeniorhynochus larvae population.
机译：的库蚊种虫害是一个向量的致病生物体包括丝虫的寄生虫,脑炎病毒和西尼罗河病毒病毒;控制向量。以前被应用在控制的库蚊种虫害构成危险环境。光和一种天然产品,甲醇提取的芙蓉sabdariffa花萼(HSME)控制库蚊的繁殖和传播tritaeniorhynochus调查。幼虫的c . tritaeniorhynochus喂养HSME和曝光18个小时。显示超过80%死亡率的测试样本LC_(50)为528.44 ppm;死亡率与相应的比例增加在HSME浓度和照射时间长成立。在黑暗的控制和反应是没有见过反应,这意味着光的存在和照片感光剂(HSME)是必需的引起死亡率库蚊tritaeniorhynochus幼虫的数量。

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