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首页> 外文期刊>Journal of Aquatic Sciences >RELATIVE POTENCY OF ETHANOL EXTRACTS OF STEM BARK OF Sacoglottis gabonensis AND SEEDS OF Picralima nitida TO LARVAE OF Anopheles gambiae
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RELATIVE POTENCY OF ETHANOL EXTRACTS OF STEM BARK OF Sacoglottis gabonensis AND SEEDS OF Picralima nitida TO LARVAE OF Anopheles gambiae

机译：加蓬虎杖和皮氏ral种子对冈比亚按蚊幼虫的乙醇提取物相对电位

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摘要

Sacoglottis gabonensis and Picralima nitida are medicinal plants that are of great value in folk medicine in West Africa. This study was aimed at determining the relative potency of ethanol stem bark extract of S. gabonensis and seed extract of P. nitida to mosquito larvae. Potency of extracts was evaluated in static bioassays on fourth instar larvae of Anopheles gambiae at concentrations of 0.45,0.60 and 0.75%w/v. Observations were made at 24 and 48 hours. Larval mortalities of 100% and 78.33% wererecorded for 0.75% w/v of ethanol stem bark of 5. gabonensis and seeds of P.nitida respectively at the end of 48 hours. At same exposure period, 0.45 and 0.60%w/v of ethanol stem bark of S. gabonensis resulted in 56.66 and 85.00% mortalities of larvae respectively. The same concentration and exposure period resulted in mortalities of 28.33 and 46.66% using ethanol seed of P. nitida. Ethanol stem bark of S. gabonensis was more potent than ethanol seed extract of P.nitida. Larvae in the controls were agile throughout the duration of experiment. Thus stem bark of S. gabonensis and seed of P.nitida are potential agents for the control of An. gambiae which is one of the vectors of malaria and filariasis.
机译：Sacoglottis gabonensis和Picralima nitida是药用植物，在西非的民间医学中具有重要价值。这项研究旨在确定加蓬链球菌乙醇茎皮提取物和P. nitida种子提取物对蚊虫幼虫的相对效力。在浓度为0.45、0.60和0.75％w / v的冈比亚按蚊第四龄幼虫的静态生物分析中评估了提取物的效力。在24和48小时进行观察。在48小时结束时，分别记录了0.75％w / v的5. gabonensis乙醇茎皮和P.nitida种子的幼虫死亡率为100％和78.33％。在相同暴露时间，加蓬链球菌乙醇茎皮的0.45％和0.60％w / v分别导致幼虫的死亡率为56.66％和85.00％。在使用相同浓度和暴露时间的情况下，使用P. nitida的乙醇种子的死亡率为28.33和46.66％。加蓬链球菌的乙醇茎皮比P.nitida的乙醇种子提取物更有效。在整个实验过程中，对照组中的幼虫都是敏捷的。因此，加蓬链球菌的茎皮和P.nitida的种子是控制An的潜在药物。冈比亚是疟疾和丝虫病的媒介之一。

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