Githeko A K, Service M W, Mbogo C M, Atieli F K, Juma F O
Kenya Medical Research Institute (KEMRI), Vector Biology and Control Research Centre, Kisumu.
Acta Trop. 1994 Dec;58(3-4):307-16. doi: 10.1016/0001-706x(94)90024-8.
Blood meals were obtained from indoor and outdoor resting malaria vectors in three villages of western Kenya and tested by sandwich ELISA to determine host preferences and their human blood index (HBI). Anopheles gambiae s.s. collected indoors at Kisian village had a HBI of 0.97 while that of Anopheles arabiensis collected at Ahero was 0.23. However, the HBI of A. arabiensis varied depending on the availability of outdoor resting shelters. Most female A. arabiensis (98.9%) collected outdoors in granaries at Ahero had fed on cattle. Indoor-collected female Anopheles funestus had mainly fed on people (93.0%), but taken at least some of their blood (20.2%) from cattle. Although small numbers of A. arabiensis fed on sheep or goats and birds, none of the female A. gambiae s.s. and A. funestus tested had fed on these hosts. The absence of human-fed A. arabiensis in outdoor shelters indicated that exiting after feeding, a behaviour pattern that mitigates indoor insecticidal spraying, is not prevalent in this species in western Kenya.
从肯尼亚西部三个村庄的室内和室外栖息的疟疾媒介获取血餐样本，并通过夹心酶联免疫吸附测定法（ELISA）进行检测，以确定宿主偏好及其人类血液指数（HBI）。在基西安村室内采集的冈比亚按蚊指名亚种的人类血液指数为0.97，而在阿赫罗采集的阿拉伯按蚊的人类血液指数为0.23。然而，阿拉伯按蚊的人类血液指数因室外栖息场所的可利用情况而异。在阿赫罗谷仓室外采集的大多数雌性阿拉伯按蚊（98.9%）以牛为食。室内采集的雌性致倦库蚊主要以人血为食（93.0%），但至少有一部分血液（20.2%）来自牛。虽然少量阿拉伯按蚊以绵羊、山羊或鸟类为食，但所检测的冈比亚按蚊指名亚种和致倦库蚊的雌性均未以这些宿主为食。在室外栖息场所未发现吸食人血的阿拉伯按蚊，这表明吸血后外出这种减轻室内杀虫剂喷洒效果的行为模式在肯尼亚西部的该物种中并不普遍。
