Harwood James F, Rama Vineshwaran, Hash John M, Gordon Scott W
Navy Environmental and Preventive Medicine Unit 6, Honolulu, HI.
National Vector Control Unit, Ministry of Health and Medical Services, Suva, Fiji.
J Med Entomol. 2018 Feb 28;55(2):481-484. doi: 10.1093/jme/tjx221.
The Gravid Aedes Trap (GAT) is a passive trap that relies on visual and olfactory cues to lure and capture gravid mosquitoes. The GAT was designed as a dengue vector surveillance tool for use in conditions where power sources are not readily available. Experiments were conducted over a 10-d period in Fiji to determine which species of mosquitoes the GAT would collect, how different infusion types affect the attractiveness of the trap, how long each infusion type took to begin attracting mosquitoes, and how long the infusion was attractive to container breeding Aedes mosquitoes. Infusions were created by adding 10 g of organic material to 2 liters of water. Infusions were made using chicken feed pellets, dried mango leaves (Mangifera indica), and dried lawn grasses (primarily Axonopus spp.). The GAT collected four different vectors Aedes aegypti (Linnaeus) (Diptera: Culicidae), Aedes albopictus (Skuse) (Diptera: Culicidae), Aedes polynesiensis Mark (Diptera: Culicidae), and Culex quinquefasciatus Say (Diptera: Culicidae). As observed in previous studies, using some type of organic infusion improved the attractiveness of the trap. Of the three different infusion components tested, chicken feed was most attractive followed by lawn grasses and mango leaves. All infusions performed better than plain water. Chicken feed was found to be most attractive for Ae. aegypti and Ae. albopictus during the first 6 d after placing the traps and for Cx. quinquifasciatus in days 7-9. The mango and grass infusions took longer to attract mosquitoes but were most attractive during days 7-10 for all species.
孕蚊诱捕器（GAT）是一种被动式诱捕器，它依靠视觉和嗅觉线索来引诱并捕获孕蚊。GAT被设计用作登革热媒介监测工具，用于电力供应不易获取的环境。在斐济进行了为期10天的实验，以确定GAT能捕获哪些蚊种，不同的浸泡液类型如何影响诱捕器的吸引力，每种浸泡液类型开始吸引蚊子需要多长时间，以及浸泡液对容器孳生的伊蚊有吸引力的时长。浸泡液是通过向2升水中添加10克有机物质制成的。浸泡液使用鸡饲料颗粒、干芒果叶（芒果）和干草坪草（主要是地毯草属物种）制成。GAT捕获了四种不同的病媒，即埃及伊蚊（林奈）（双翅目：蚊科）、白纹伊蚊（斯库斯）（双翅目：蚊科）、波利尼西亚伊蚊马克（双翅目：蚊科）和致倦库蚊（赛伊）（双翅目：蚊科）。如先前研究中所观察到的，使用某种类型的有机浸泡液可提高诱捕器的吸引力。在测试的三种不同浸泡液成分中，鸡饲料最具吸引力，其次是草坪草和芒果叶。所有浸泡液的效果都优于普通水。发现鸡饲料对埃及伊蚊和白纹伊蚊在放置诱捕器后的前6天最具吸引力，对致倦库蚊在第7 - 9天最具吸引力。芒果和草坪草浸泡液吸引蚊子所需时间更长，但在第7 - 10天对所有蚊种最具吸引力。
