National Tsetse Fly and Trypanasomiasis Control and Eradication Institute, Arba Minch Tsetse Fly and Trypanasomiasis Control and Investigation Center, Arba Minch, Ethiopia.
Department of Biology, College of Natural Sciences, Arba Minch University, Arba Minch, Ethiopia.
PLoS Negl Trop Dis. 2022 Dec 22;16(12):e0010999. doi: 10.1371/journal.pntd.0010999. eCollection 2022 Dec.
Tsetse flies are the vector of protozoan parasite of the genus Trypanosoma, the causative agent of human African sleeping sickness and animal trypanosomiasis. Traps such as Nguruman (NGU), biconical and sticky traps are in use for tsetse flies sampling and monitoring. However, there is no evidence regarding their comparative efficiency in catching flies using olfactory cues. Therefore, the present study aimed to evaluate the efficiency of different types of traps in catching tsetse flies at Nech Sar and Maze National Parks, Southwestern Ethiopia. The study was done for six consecutive months from February to July 2019. Briefly, a 3×4 Latin square design was performed, and tsetse flies were collected for three days each month in four different vegetation types, including wood grassland, bush land, forest, and riverine forest. To avoid trapping position bias, rotation of traps has been done every day. Almost all (99.5%) of the flies were Glossina pallidipes and the remaining were G. fuscipes. The latter were present only at Maze national park. NGU traps were the most efficient type with 12.1 flies/trap/day at Nech Sar National Park and it was 2.2 flies/trap/day at Maze National Park followed by biconical and sticky traps. The number of tsetse flies collected by biconical trap was three-fold lower than NGU trap, and it was four-fold lower in sticky trap than NGU trap in both Nech Sar and Maze National Parks. A substantial number (41%) of G. pallidipes were collected from woody grassland (WGL). In conclusion, G. pallidipes monitoring and evaluation activities could consider NGU trap model as it performed better in most vegetation types in the region.
采采蝇是原生动物寄生虫属锥虫的传播媒介，是人类昏睡病和动物锥虫病的病原体。陷阱，如 Nguruman（NGU）、双锥形和粘性陷阱，用于采采蝇采样和监测。然而，关于它们在利用嗅觉线索捕捉苍蝇方面的相对效率，尚无证据。因此，本研究旨在评估不同类型的陷阱在埃塞俄比亚西南部 Nech Sar 和 Maze 国家公园捕捉采采蝇的效率。该研究从 2019 年 2 月至 7 月连续进行了六个月。简而言之，进行了 3×4 拉丁方设计，每月在四种不同植被类型（包括木草原、灌木地、森林和河流森林）中收集三天的采采蝇。为了避免诱捕位置的偏差，每天都会更换诱捕器的位置。几乎所有（99.5%）的苍蝇都是 G. pallidipes，其余的是 G. fuscipes。后者仅在 Maze 国家公园出现。NGU 诱捕器在 Nech Sar 国家公园的效率最高，每天每诱捕器捕获 12.1 只苍蝇，在 Maze 国家公园的效率为每天每诱捕器捕获 2.2 只苍蝇，其次是双锥形和粘性诱捕器。与 NGU 诱捕器相比，双锥形诱捕器收集的采采蝇数量减少了三分之一，在 Nech Sar 和 Maze 国家公园的粘性诱捕器中，这一数量减少了四分之一。大量（41%）的 G. pallidipes 是从木草原（WGL）收集的。总之，在该地区的大多数植被类型中，监测和评估 G. pallidipes 活动时可以考虑使用 NGU 诱捕器模型，因为它的性能更好。
