Harris Angela F, Matias-Arnéz Abrahan, Hill Nigel
Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, UK.
Trans R Soc Trop Med Hyg. 2006 Jan;100(1):45-7. doi: 10.1016/j.trstmh.2005.07.001. Epub 2005 Sep 9.
Malaria is a growing problem in the Bolivian Amazon where there has been a four-fold increase between 1991 and 1998, largely owing to forest clearance bringing human and vector into closer association. The principle vector in this region is Anopheles darlingi Root, the behaviour of which has been little studied in this part of South America. The peak time of biting of A. darlingi was studied over a series of nights in July 2003 during the dry season in the town of Riberalta in the Bolivian Amazon. Peak biting occurred between 19:00 and 21:00 hours, when 48% of the total night's biting took place. This early biting habit has implications regarding control of malaria via the use of insecticide-treated bed nets. Anopheles darlingi was the most prevalent vector in the study, although A. albitarsis s.l. and A. braziliensis were also present.
疟疾在玻利维亚亚马逊地区正成为一个日益严重的问题，在1991年至1998年间病例增长了四倍，这主要归因于森林砍伐使人类与病媒的接触更为密切。该地区的主要病媒是达林按蚊（Anopheles darlingi Root），而在南美洲的这一地区，对其行为的研究很少。2003年7月旱季期间，在玻利维亚亚马逊地区的里韦拉尔塔镇，通过一系列夜晚对达林按蚊的叮咬高峰时间进行了研究。叮咬高峰出现在19:00至21:00之间，此时占整个夜晚叮咬总数的48%。这种早期叮咬习性对通过使用经杀虫剂处理的蚊帐来控制疟疾具有影响。达林按蚊是该研究中最普遍的病媒，不过白跗按蚊复合组（A. albitarsis s.l.）和巴西按蚊（A. braziliensis）也有出现。
