加蓬伊温多国家公园锥虫潜在传播媒介清单及采采蝇感染率
Inventory of potential vectors of trypanosoma and infection rate of the Tsetse fly in the National Park of Ivindo, Gabon.
作者信息
Mbang Nguema O A, Mavoungou J F, Mawili-Mboumba D P, Zinga Koumba R C, Bouyou-Akotet M K, M'batchi B
机构信息
Intitut de Recherche en Ecologie Tropicale (IRET), BP 13354, Libreville, Gabon; Department of Parasitology-Mycology, Faculty of Medicine, Université des Sciences de la Santé, BP 4009, Libreville, Gabon; Université des Sciences et Techniques de Masuku, BP 941, Franceville, Gabon.
Intitut de Recherche en Ecologie Tropicale (IRET), BP 13354, Libreville, Gabon; Université des Sciences et Techniques de Masuku, BP 941, Franceville, Gabon.
出版信息
Afr Health Sci. 2015 Sep;15(3):762-7. doi: 10.4314/ahs.v15i3.9.
BACKGROUND
Trypanosoma's vectors distribution is poorly investigated in Gabon, where Trypanosomiasis historical foci exist. Thus, an active detection of Trypanosoma sp transmission needs to be assessed.
OBJECTIVES
The present study aims to identify potential vectors of Trypanosoma sp and to evaluate the infection rate of the Tsetse fly in an area of Gabon.
METHODS
An entomological survey was conducted in the National Park of Ivindo in May 2012 using Vavoua traps. All captured insects were identified. Tsetse were dissected and organs were microscopically observed to detect the presence of Trypanosoma sp.
RESULTS
247 biting flies known as vectors of Trypanosomiasis were caught including 189 tsetse flies, 32 Tabanid and 26 Stomoxys. Tsetse flies had the highest bulk densities per trap per day (ADT = 3 tsetse / trap / day), while the lowest density was found among Stomoxys (ADT= 0.41 Stomoxys / trap / day). The infection rate of flies was 6.3%. Infectious organs were midguts and to a lesser extent salivary glands and proboscis.
CONCLUSION
The presence of Tsetse infected by Trypanosoma highlights an existing risk of trypanosomiasis infection in the National Park of Ivindo.
背景
在存在锥虫病历史疫源地的加蓬，对锥虫传播媒介的分布情况研究不足。因此，需要评估对锥虫属传播进行主动检测的必要性。
目的
本研究旨在确定锥虫属的潜在传播媒介，并评估加蓬某地区采采蝇的感染率。
方法
2012年5月在伊温多国家公园使用瓦武阿诱捕器进行了昆虫学调查。对所有捕获的昆虫进行了鉴定。对采采蝇进行解剖，并对其器官进行显微镜观察，以检测锥虫属的存在。
结果
共捕获247只作为锥虫病传播媒介的叮咬蝇，其中包括189只采采蝇、32只虻和26只厩螫蝇。采采蝇的日均捕获量最高（每诱捕器每天捕获3只采采蝇），而厩螫蝇的捕获量最低（每诱捕器每天捕获0.41只厩螫蝇）。蝇类的感染率为6.3%。感染器官为中肠，唾液腺和喙部的感染程度较轻。
结论
采采蝇感染锥虫表明伊温多国家公园存在锥虫病感染风险。
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