Is the Mbita trap a reliable tool for evaluating the density of anopheline vectors in the highlands of Madagascar?
Is the Mbita trap a reliable tool for evaluating the density of anopheline vectors in the highlands of Madagascar?
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DOI：
10.1186/1475-2875-2-42
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发表时间：
2003-11-01
期刊：
影响因子：
3
通讯作者：
Robert, V
中科院分区：
文献类型：
--
作者：
Laganier, R;Randimby, FM;Robert, V
背景：收集蚊子的一种方法是用人作为诱饵。这被称为人类登陆收集，是评估人均蚊子密度的参考方法。Mathenge等人在文献中描述的Mbita陷阱由一个进入不返回的装置组成，人类被用作诱饵，但不能被咬。方法：在马达加斯加高地的3个传统村落中进行为期6个月的28个夜间的研究，最终比较4 48人夜和84人夜的诱蚊效果，分别收集6 881只蚊子和85只蚊子。结果：捕蚊器每人夜捕获蚊子15 4只，诱蚊器每晚捕蚊1只，即诱蚊诱捕器与人登陆的效率分别为0.066。按蚊数量为每人夜10.30条，每诱捕夜0.55条，即效率为0.053。室内按蚊的效率为0.10，室外按蚊为0.24。Funestus，阿拉伯按蚊0.03。结论：在马达加斯加高原，由于其独特的高度嗜食动物的疟疾媒介，与人类登陆收集相比，Mbita诱捕器收集很差，而且不可靠，仍然是评估蚊子密度和疟疾传播的参考方法。然而，这一结论不应直接推论到其他地区，如热带非洲，那里的疟疾媒介一直是内嗜性的。
Background: One method of collecting mosquitoes is to use human beings as bait. This is called human landing collection and is a reference method for evaluating mosquito density per person. The Mbita trap, described by Mathenge et al in the literature, consists of an entry-no return device whereby humans are used as bait but cannot be bitten. We compared the Mbita trap and human landing collection in field conditions to estimate mosquito density and malaria transmission.Methods: Our study was carried out in the highlands of Madagascar in three traditional villages, for 28 nights distributed over six months, with a final comparison between 448 men-nights for human landing and 84 men-nights for Mbita trap, resulting in 6,881 and 85 collected mosquitoes, respectively.Results: The number of mosquitoes collected was 15.4 per human-night and 1.0 per trap-night, i.e. an efficiency of 0.066 for Mbita trap vs. human landing. The number of anophelines was 10.30 per human-night and 0.55 per trap-night, i.e. an efficiency of 0.053. This efficiency was 0.10 for indoor Anopheles funestus, 0.24 for outdoor An. funestus, and 0.03 for Anopheles arabiensis. Large and unexplained variations in efficiency were observed between villages and months.Conclusion: In the highlands of Madagascar with its unique, highly zoophilic malaria vectors, Mbita trap collection was poor and unreliable compared to human landing collections, which remains the reference method for evaluating mosquito density and malaria transmission. This conclusion, however, should not be extrapolated directly to other areas such as tropical Africa, where malaria vectors are consistently endophilic.