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首页> 外文期刊>Malaria Journal >Preliminary survey on Anopheles species distribution in Botswana shows the presence of Anopheles gambiae and Anopheles funestus complexes
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Preliminary survey on Anopheles species distribution in Botswana shows the presence of Anopheles gambiae and Anopheles funestus complexes

机译：博茨瓦纳按蚊物种分布的初步调查显示，冈比亚按蚊和真菌按蚊复合体存在

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BackgroundBotswana is one of the four front line malaria elimination countries in Southern Africa, with malaria control activities that include routine vector control. Past and recent studies have shown that Anopheles arabiensis is the only known vector of Plasmodium parasites in the country. This report presents a preliminary evaluation on Anopheles species composition in seven districts of Botswana with some inferences on their vectorial role. ResultsOverall, 404 Anopheles mosquito females were collected, of which 196 were larvae collected from several breeding sites, and 208 were adults obtained from indoor pyrethrum spray catches (PSC). Anopheles arabiensis (58.9%) accounted for the highest relative frequency in 5 out of 7 districts?sampled. The other species collected, among those identified, were barely represented: Anopheles longipalpis type C (16.3%), Anopheles parensis (8.9%), Anopheles quadriannulatus (5.4%), and Anopheles leesoni (0.2%). PCR test for human β-globin on mosquitoes collected by PSC showed that An. arabiensis and An. parensis had bitten human hosts. Moreover, An. arabiensis showed a non-negligible Plasmodium falciparum infection rate in two sites (3.0% and 2.5% in Chobe and Kweneng West districts, respectively). ConclusionsThis work provides first time evidence of Anopheles diversity in several areas of Botswana. Anopheles arabiensis is confirmed to be widespread in all the sampled districts and to be vector of P. falciparum . Moreover, the presence of Anopheles funestus group in Botswana has been assessed. Further research, entomological surveillance activities and possibly vector control programmes need to be better developed and implemented as well as targeting outdoors resting vectors.
机译：背景博茨瓦纳是南部非洲四个消除疟疾的第一线国家之一，其疟疾控制活动包括常规的媒介控制。过去和最近的研究表明，阿拉伯按蚊是该国唯一已知的疟原虫寄生虫媒介。本报告对博茨瓦纳七个地区的按蚊物种组成进行了初步评估，并对其媒介作用进行了推断。结果共收集到404只蚊虫雌性，其中从几个繁殖地点收集了196只幼虫，从室内除虫菊喷雾剂（PSC）中获得了208只成虫。在7个地区中，有5个地区的阿拉伯按蚊（58.9％）相对频率最高。在确定的其他物种中，收集到的其他物种几乎没有代表性：C型长鳍按蚊（16.3％），par按蚊（8.9％），qua按蚊（5.4％）和leesoni按蚊（0.2％）。通过PSC收集的蚊子的人类β-珠蛋白的PCR测试显示，An。阿拉伯和安南parensis咬过人类宿主。而且，安。阿拉伯地区的两个地方的恶性疟原虫感染率均不可忽略（乔贝区和克温恩区分别为3.0％和2.5％）。结论这项工作为博茨瓦纳多个地区的按蚊多样性提供了首次证据。阿拉伯按蚊被证实在所有采样地区广泛传播，并是恶性疟原虫的媒介。此外，已经评估了博茨瓦纳的按蚊属真菌群的存在。需要进一步开发和实施进一步的研究，昆虫学监视活动以及可能的媒介控制程序，以及针对户外静止的媒介。

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