三叶藻的化学成分、杀虫活性及非靶效应普氏精油对登革热、丝虫病、疟疾病媒和四种天敌的未成熟阶段(卵、幼虫和蛹)具有防治作用。

IF 5.8 3区 环境科学与生态学 0 ENVIRONMENTAL SCIENCES
Jeyaraj Selvakumaran, Pathalam Ganesan, Savarimuthu Ignacimuthu
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引用次数: 0

摘要

病媒控制仍然是预防严重疾病的最有效战略。本文对三叶藻(Sphagneticola trilobata, L.)挥发油的药效进行了研究。对斯氏按蚊、埃及伊蚊和致倦库蚊等蚊种均有杀灭作用。分别在3.125、6.25、12.5、25和50 μl/L的浓度下测定EO。在50 μl/L浓度下,24 h内对3种虫卵均有85 ~ 100%的杀卵活性;阳性对照双硫磷与双硫磷相似。对按蚊、伊蚊和库蚊幼虫24 h内LC50分别为51.66、129.58和25.88 μl/L,具有较强的杀幼虫活性。但各媒介蚊均未见明显的杀虫活性。GC-MS分析鉴定出10个化合物,其中萜烯类化合物α-蒎烯为主要成分(84.57%);该化合物可能对所观察到的活性有重要作用。毒性研究表明,三叶虫的EO对被试天然捕食者无不良影响。EO是为现场应用而制定的,并在实验室环境中进行了测试;在不伤害天敌的情况下,具有潜在的杀幼虫和杀卵活性。未来的研究应优先分离这些化合物,研究它们的作用模式,并评估田间应用,以开发可行的三叶虫灭蚊产品。本研究报告了三叶虫的EO是一种有效的、安全的杀蚊剂。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Chemical composition, insecticidal activity and non-target effects of Sphagneticola trilobata (L.) Pruski essential oil against immature stages (egg, larvae and pupae) of dengue, filariasis, malaria vectors and four natural predators.

Vector control remains the most effective strategy for preventing serious diseases. The present research was undertaken to check the effectiveness of essential oil (EO) from Sphagneticola trilobata (L.) Pruski against Anopheles stephensi, Aedes aegypti and Culex quinquefasciatus mosquito species. The EO was tested at concentrations of 3.125, 6.25, 12.5, 25 and 50 μl/L. The oil demonstrated 85-100% ovicidal activity at 50 μl/L concentration against the eggs of all three species within 24 h; it was similar to that of temephos the positive control. It also showed strong larvicidal activity with LC50 values of 51.66, 129.58 and 25.88 μl/L within 24 h against the larvae of Anopheles, Aedes and Culex species respectively. However, no significant pupicidal activity was observed in any of the mosquito vectors. GC-MS analysis identified ten compounds, with terpene compound α-Pinene (84.57%) as the primary component; this compound may contribute significantly to the observed activity. Toxicity studies revealed that the EO from S. trilobata had no adverse effects on the tested natural predators. The EO was formulated for field application and tested in a laboratory setting; it showed potential larvicidal and ovicidal activities without harming natural predators. Future research should prioritize isolating these compounds, investigating their mode of action and evaluating field applications to develop a viable mosquito control product derived from S. trilobata. The present study reports that EO from S. trilobata is a potent and safe insecticidal agent against the three tested mosquito vectors.

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来源期刊
CiteScore
8.70
自引率
17.20%
发文量
6549
审稿时长
3.8 months
期刊介绍: Environmental Science and Pollution Research (ESPR) serves the international community in all areas of Environmental Science and related subjects with emphasis on chemical compounds. This includes: - Terrestrial Biology and Ecology - Aquatic Biology and Ecology - Atmospheric Chemistry - Environmental Microbiology/Biobased Energy Sources - Phytoremediation and Ecosystem Restoration - Environmental Analyses and Monitoring - Assessment of Risks and Interactions of Pollutants in the Environment - Conservation Biology and Sustainable Agriculture - Impact of Chemicals/Pollutants on Human and Animal Health It reports from a broad interdisciplinary outlook.
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