Amerasinghe F P, Ariyasena T G
Department of Zoology, University of Peradeniya, Sri Lanka.
J Med Entomol. 1991 May;28(3):387-93. doi: 10.1093/jmedent/28.3.387.
A survey of adult mosquitoes was done during 1986-1987 in an area undergoing irrigation development in the Mahaweli Project of Sri Lanka. The study encompassed two 12-mo phases of settlement and irrigation, respectively. Diurnal human bait catches yielded 1,427 female mosquitoes in 27 species. Nocturnal collections (human bait, CDC light traps, indoor resting catches) produced a total of 30,491 females in 67 species. Comparisons with an earlier survey in the predevelopment forest showed that the diurnal human biting abundance of Aedes albopictus (Skuse) remained stable, whereas the abundance of Ae. novalbopictus Barraud and Ae. w-albus Theobald declined drastically after development. Man-mosquito contact increased substantially for nocturnally active Anopheles annularis van der Wulp, An. subpictus Grassi, Mansonia uniformis (Theobald), Culex tritaeniorhynchus Giles, and Cx. quinefasciatus Say and decreased for Ma. annulifera (Theobald) and Cx. gelidus Theobald. A small increase occurred in An. culicifacies Giles, An. vagus Donitz, An. varuna lyengar, Cx. fuscocephala Theobald, and Cx. whitmorei (Giles); Cx. pseudovishnui Colless decreased. The effect of changes in mosquito abundance on the increased transmission of malaria and Japanese encephalitis is discussed.
1986 - 1987年期间，在斯里兰卡马哈韦利项目中一个正在进行灌溉开发的地区，对成年蚊子进行了一项调查。该研究分别涵盖了定居和灌溉两个为期12个月的阶段。日间人工诱捕共捕获了27种1427只雌蚊。夜间采集（人工诱捕、疾控中心诱蚊灯诱捕、室内栖息蚊虫采集）共捕获了67种30491只雌蚊。与该地区开发前森林中的早期调查结果相比，白纹伊蚊（Skuse）的日间叮人率保持稳定，而新白纹伊蚊（Barraud）和吴氏伊蚊（Theobald）在开发后数量大幅下降。夜间活动的环纹按蚊（van der Wulp）、伪杂鳞库蚊（Grassi）、同型曼蚊（Theobald）、三带喙库蚊（Giles）和致倦库蚊（Say）与人类的接触显著增加，而环带曼蚊（Theobald）和杰氏库蚊（Theobald）与人类的接触减少。嗜人按蚊（Giles）、迷走按蚊（Donitz）、叶氏按蚊（lyengar）、棕头库蚊（Theobald）和惠氏库蚊（Giles）的数量略有增加；伪杂鳞库蚊（Colless）数量减少。文中讨论了蚊虫数量变化对疟疾和日本脑炎传播增加的影响。
