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首页> 外文期刊>Journal of Medical Entomology >Characterization of an Indoor-Resting Population of Anopheles arabiensis (Diptera: Culicidae) and the Implications on Malaria Transmission in Tubu Village in Okavango Subdistrict, Botswana
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Characterization of an Indoor-Resting Population of Anopheles arabiensis (Diptera: Culicidae) and the Implications on Malaria Transmission in Tubu Village in Okavango Subdistrict, Botswana

机译：博茨瓦纳奥卡万戈区图布村阿拉伯人按蚊（Diptera：Culicidae）室内栖居种群的特征及其对疟疾传播的影响

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摘要

Comprehensive knowledge on vector dynamics is lacking in Botswana and yet essential for effective indoor residual spraying. This study assessed some of the entomological indices that contribute to malaria transmission by an indoor-resting population of Anopheles arabiensis Patton (Diptera: Culicidae) in Tubu village, Okavango subdistrict. The pyrethroid space-spray technique and hut searches were used to sample mosquitoes. Species and bloodmeal source identification were done using the polymerase chain reaction techniques. The infective status was determined by the enzyme-linked immuno-sorbent assay test. The human blood indices (HBI), human-biting rates (HBR), and vector densities were computed. Anopheles arabiensis was the sole vector and member of the Anopheles gambiae Giles complex identified. Significant changes in vector densities were observed over seasons, while nonsignificant differences were observed among the huts (P>0.05). The main source of bloodmeal was cattle (46.8% [65]). There were no significant differences in HBI (P>0.05) and HBR (P>0.05) between the seasons. All the 271 mosquitoes tested for sporozoite infection were negative. The results showed that seasonal variations in vector densities corresponded to the traditional malaria and nonmalaria seasons. The vector population was relatively more zoophagic. The HBI and HBR were not influenced by the seasons. None of the endophilic mosquitoes tested (N = 271) was positive for sporozoites. Our study provided some relevant basic information to the local malaria control program that may be used to strategize their operations if malaria elimination has to be achieved by 2017.
机译：博茨瓦纳缺乏对矢量动力学的全面了解，但对于有效的室内残留喷涂至关重要。这项研究评估了在Okavango街道Tubu村的室内休息的按蚊按蚊种群传播疟疾的一些昆虫学指标。拟除虫菊酯空间喷雾技术和小屋搜索被用来采样蚊子。使用聚合酶链反应技术对物种和血粉来源进行鉴定。通过酶联免疫吸附试验确定感染状态。计算了人类血液指数（HBI），人咬率（HBR）和载体密度。阿拉伯按蚊是唯一的媒介，也是冈比亚按蚊吉尔斯复杂群的成员。随着季节的变化，媒介密度发生了显着变化，而小屋之间的变化无统计学意义（P> 0.05）。血粉的主要来源是牛（46.8％[65]）。两个季节之间的HBI（P> 0.05）和HBR（P> 0.05）没有显着差异。测试的271只蚊子均受到子孢子感染的检测呈阴性。结果表明，媒介密度的季节性变化与传统的疟疾和非疟疾季节相对应。媒介种群相对食虫性。 HBI和HBR不受季节的影响。测试的所有内生性蚊子（N = 271）都不对子孢子呈阳性。我们的研究为当地的疟疾控制计划提供了一些相关的基本信息，如果必须在2017年之前消除疟疾，这些信息可能会用于制定其行动策略。

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