Reza Mohamad, Ilmiawati Cimi, Matsuoka Hiroyuki
Department of Biology, Faculty of Medicine, Andalas University, West Sumatra, Indonesia.
Department of Pharmacology, Faculty of Medicine, Andalas University, West Sumatra, Indonesia.
Trop Med Health. 2016 Apr 10;44:11. doi: 10.1186/s41182-016-0007-8. eCollection 2016.
The application of oviposition traps (ovitraps) is one of the currently available rational methods used in mosquito control campaigns because it eliminates the larval stage. However, the use of current larvicides is hampered by their cost and applicability. Therefore, a more economical and practical alternative is urgently needed. We previously reported that copper in liquid form is a promising candidate due to its potent larvicide properties in a laboratory setting, affordability, and availability.
In the present study, a field test was performed by randomly placing copper-filled plastic pots with a concentration of 10 ppm in 21 local houses in Painan City, West Sumatra, Indonesia. Three of these pots including a control were placed inside, while another two were placed outside each of the houses.
After 14 days, a large number of dead first and second instar larvae of Aedes spp. were observed in the copper-filled pots. Larvae in the control pots were all viable and thriving. Unhatched eggs and pupae were detected in several pots in the copper-treated group but were excluded from the analysis.
Our field data confirmed that copper is a potential larvicide for ovitraps, particularly in under-resourced areas.
产卵诱捕器（诱蚊产卵器）的应用是目前蚊虫防治运动中可用的合理方法之一，因为它能消除幼虫阶段。然而，目前杀幼虫剂的使用受到成本和适用性的限制。因此，迫切需要一种更经济实用的替代品。我们之前报道过，液态铜因其在实验室环境中的强大杀幼虫特性、可承受性和可得性，是一个有前景的候选物。
在本研究中，通过在印度尼西亚西苏门答腊省帕南市的21所当地房屋中随机放置浓度为10 ppm的装有铜的塑料盆进行现场测试。其中三个盆（包括一个对照盆）放置在屋内，另外两个盆分别放置在每所房屋的屋外。
14天后，在装有铜的盆中观察到大量伊蚊属的一龄和二龄死幼虫。对照盆中的幼虫全部存活且生长良好。在铜处理组的几个盆中检测到未孵化的卵和蛹，但在分析中被排除。
我们的现场数据证实，铜是诱蚊产卵器的一种潜在杀幼虫剂，特别是在资源匮乏地区。
