Cilek James E, Weston Joshua R, Richardson Alec G
Navy Entomology Center of Excellence, Box 43, 937 Child Street, Jacksonville, FL 32212.
J Am Mosq Control Assoc. 2017 Jun;33(2):148-150. doi: 10.2987/16-6622.1.
Biogents Sentinel (BGS) traps have rapidly become a standard for adult Aedes aegypti surveillance. Several investigators have found that trap collections can be damaged easily by heavy dew or rain entering the trap intake port. In addition, water entering the trap may temporarily stop the fan, thus reducing the collection potential of the trap. We evaluated the effectiveness of a rain cover designed to minimize damage to mosquito trap collections from BGS 2.0 traps in a residential backyard in Jacksonville, FL. Rain covers consisted of white fiberglass 51-cm sheets positioned 19, 29, and 39 cm above the air intake of the traps. One BGS trap did not have a rain cover and was used as a control standard for comparison. All traps were baited with the BG-Lure. Generally, traps with rain covers resulted in higher mosquito counts when compared with collections from uncovered traps. Overall mosquito abundance was greater from traps with the rain cover positioned at 29 cm, but this difference was not significantly different when compared with the other cover heights. Covers spaced 29 or 39 cm collected significantly more Culex quinquefasciatus compared with traps at 19 cm and no cover. Species diversity was greatest for BGS traps with the rain cover positioned at 29 cm followed by 39 cm, 19 cm, and no cover; however, differences in diversity among the traps, with or without covers, were not significant.
Biogents Sentinel（BGS）诱蚊器已迅速成为成年埃及伊蚊监测的标准工具。一些研究人员发现，诱蚊器的采集样本容易因大量露水或雨水进入诱蚊器的进气口而受损。此外，进入诱蚊器的水可能会暂时使风扇停止运转，从而降低诱蚊器的采集能力。我们在佛罗里达州杰克逊维尔市的一个住宅后院评估了一种防雨罩的有效性，该防雨罩旨在尽量减少BGS 2.0诱蚊器采集的蚊虫样本受到的损害。防雨罩由白色玻璃纤维板组成，尺寸为51厘米，放置在诱蚊器进气口上方19厘米、29厘米和39厘米处。一个BGS诱蚊器没有安装防雨罩，用作对照标准进行比较。所有诱蚊器都用BG引诱剂诱饵。一般来说，与未覆盖防雨罩的诱蚊器采集的样本相比，有防雨罩的诱蚊器捕获的蚊子数量更多。防雨罩位于29厘米处的诱蚊器捕获的蚊子总数更多，但与其他覆盖高度相比，这种差异并不显著。与位于19厘米处且无覆盖的诱蚊器相比，间隔29厘米或39厘米的防雨罩捕获的致倦库蚊明显更多。防雨罩位于29厘米处的BGS诱蚊器物种多样性最高，其次是39厘米、19厘米和无覆盖的情况；然而，有或没有防雨罩的诱蚊器之间的多样性差异并不显著。
