冈比亚按蚊指名亚种和库蚊(双翅目:蚊科)在科特迪瓦布瓦凯农村地区人类疟疾传播中的作用。

Role of Anopheles gambiae s.s. and Anopheles coluzzii (Diptera: Culicidae) in Human Malaria Transmission in Rural Areas of Bouaké, in Côte d'Ivoire.

机构信息

Institut Pierre Richet, Institut National de la Santé Publique, Bouaké, Côte d'Ivoire.

Unité de Formation et de Recherche en Biosciences, Université Félix Houphouët Boigny, Abidjan, Côte d'Ivoire.

出版信息

J Med Entomol. 2020 Jul 4;57(4):1254-1261. doi: 10.1093/jme/tjaa001.

Abstract

Studies done in Bouaké (Côte d'Ivoire) about 20-yr ago reported that Anopheles gambiae s.l. Giles was the major malaria vector. The present study aimed to update these data and to identify the main vectors. Mosquitoes were collected in Allokokro and Petessou villages between June 2014 and December 2015 using the human landing catching method. Potential breeding sites of An. gambiae s.l. were identified in August and October 2014 and mapped using GPS. Anopheles species were morphologically and molecularly [polymerase chain reaction (PCR)] identified. Ovaries of female were dissected to determine the parity and infection with Plasmodium was detected in head and thorax by quantitative PCR. In Allokokro, the biting rate of An. gambiae s.s was significantly greater than Anopheles coluzzii, whereas, in Petessou, biting rates of both species were comparable. Plasmodium falciparum (Haemosporida: Plasmodiidae), Plasmodium malariae (Haemosporida: Plasmodiidae), and Plasmodium ovale (Haemosporida: Plasmodiidae) identified in both villages. The infection rates of An. gambiae s.s. and An. coluzzii were not significantly different. The entomological inoculation rate (EIR) of An. gambiae s.s. for P. falciparum was 9-fold greater than that of An. coluzzii in Allokokro; however, in Petessou, the EIRs of both species were comparable. In both village, An. gambiae s.s was responsible for P. falciparum and P. ovale transmission whereas An. coluzzii transmitted all three Plasmodium species.

摘要

20 年前在布瓦凯(科特迪瓦)进行的研究报告称,冈比亚按蚊复合体是主要的疟疾媒介。本研究旨在更新这些数据,并确定主要媒介。2014 年 6 月至 2015 年 12 月期间,采用人体诱捕法在 Allokokro 和 Petessou 村收集蚊子。2014 年 8 月和 10 月,使用 GPS 确定了冈比亚按蚊复合体的潜在滋生地并进行了绘图。使用形态学和分子学(聚合酶链反应(PCR))对按蚊进行了鉴定。解剖雌性的卵巢以确定其繁殖力,并通过定量 PCR 检测头部和胸部是否感染疟原虫。在 Allokokro,冈比亚按蚊 s.s 的叮咬率明显大于 Anopheles coluzzii,而在 Petessou,两种蚊子的叮咬率相当。在两个村庄都发现了疟原虫(Haemosporida:疟原虫科)、间日疟原虫(Haemosporida:疟原虫科)和卵形疟原虫(Haemosporida:疟原虫科)。冈比亚按蚊 s.s 和 An. coluzzii 的感染率没有显著差异。在 Allokokro,冈比亚按蚊 s.s 传播恶性疟原虫的昆虫接种率(EIR)是 An. coluzzii 的 9 倍;然而,在 Petessou,两种蚊子的 EIR 相当。在两个村庄,冈比亚按蚊 s.s 负责传播恶性疟原虫和卵形疟原虫,而 An. coluzzii 传播所有三种疟原虫。

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