Department of Disease Control, London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK.
Present address: President's Malaria Initiative and Entomology Branch, Division of Parasitic Diseases and Malaria, Center of Global Health, Centers for Disease Control and Prevention, Atlanta, GA, USA.
Parasit Vectors. 2019 Feb 7;12(1):75. doi: 10.1186/s13071-019-3324-z.
There are many different traps available for studying fly populations. The aim of this study was to find the most suitable trap to collect synanthropic fly populations to assess the impact of increased latrine coverage in the state of Odisha, India.
Different baits were assessed for use in sticky pot traps (60% sucrose solution, 60 g dry sucrose, half a tomato and an non-baited control), followed by different colours of trap (blue versus yellow) and finally different types of trap (baited sticky pot trap versus sticky card traps). The experiments were undertaken in a semi-urban slum area of Bhubaneswar, the capital of Odisha. The first experiment was conducted in 16 households over 30 nights while experiments 2 and 3 were conducted in 5 households over 30 nights.
The traps predominantly caught adult Musca domestica and M. sorbens (78.4, 62.6, 83.8% combined total in experiments 1-3 respectively). Non-baited traps did not catch more flies (median 7.0, interquartile range, IQR: 0.0-24.0) compared with baited traps (sucrose solution: 6.5, 1.0-27.0; dry sucrose: 5.0, 0.5-14.5; tomato: 5.0, 1.5-17.5). However, there were significantly more flies collected on blue sticky pot traps, which caught nearly three times as many flies as yellow sticky pot traps (Incidence Rate Ratio, IRR = 2.91; 95% CI: 1.77-4.79); P < 0.001). Sticky card traps (27, 8-58) collected significantly more flies than the non-baited sticky pot traps (10, 1.5-30.5).
Blue sticky card traps can be recommended for the capture of synanthropic fly species as they are non-intrusive to residents, easy to use, readily allow for species identification, and collect sufficient quantities of flies over 12 hours for use in monitoring and control programmes.
有许多不同的陷阱可用于研究蝇类种群。本研究的目的是找到最适合收集共生蝇类种群的陷阱，以评估印度奥里萨邦增加厕所覆盖率的影响。
评估了不同的诱饵用于粘性罐陷阱（60%蔗糖溶液、60 克干蔗糖、半个西红柿和无诱饵对照），然后是不同颜色的陷阱（蓝色与黄色），最后是不同类型的陷阱（诱饵粘性罐陷阱与粘性卡片陷阱）。实验在奥里萨邦首府布巴内斯瓦尔的一个半城市贫民窟进行。第一个实验在 16 户家庭中进行了 30 个晚上，而实验 2 和 3 在 5 户家庭中进行了 30 个晚上。
这些陷阱主要捕获了成年家蝇和厩腐蝇（实验 1-3 的组合总数分别为 78.4%、62.6%和 83.8%）。与诱饵陷阱相比，非诱饵陷阱捕获的苍蝇数量并没有更多（中位数 7.0，四分位距，IQR：0.0-24.0）（蔗糖溶液：6.5，1.0-27.0；干蔗糖：5.0，0.5-14.5；西红柿：5.0，1.5-17.5）。然而，蓝色粘性罐陷阱收集的苍蝇数量明显更多，几乎是黄色粘性罐陷阱的三倍（发病率比，IRR=2.91；95%置信区间：1.77-4.79）；P<0.001）。粘性卡片陷阱（27，8-58）收集的苍蝇数量明显多于非诱饵粘性罐陷阱（10，1.5-30.5）。
蓝色粘性卡片陷阱可用于捕获共生蝇类物种，因为它们对居民没有干扰，使用方便，易于进行物种鉴定，并可在 12 小时内收集足够数量的苍蝇，用于监测和控制计划。
