佐治亚州奥萨巴岛香农白蛉（双翅目：毛蠓科）的种群动态与水疱性口炎病毒的动物流行病学关系

Population dynamics of Lutzomyia shannoni (Diptera: Psychodidae) in relation to the epizootiology of vesicular stomatitis virus on Ossabaw Island, Georgia.

作者信息

Comer J A, Kavanaugh D M, Stallknecht D E, Corn J L

机构信息

Department of Parasitology, College of Veterinary Medicine, University of Georgia, Athens 30602.

出版信息

J Med Entomol. 1994 Nov;31(6):850-4. doi: 10.1093/jmedent/31.6.850.

DOI:10.1093/jmedent/31.6.850

PMID:7815397

Abstract

Population dynamics of Lutzomyia shannoni Dyar were studied on Ossabaw Island, GA, to define further the role of this species in the epizootiology of the New Jersey serotype of vesicular stomatitis (VSNJ) virus. Bimonthly collections of sand flies egressing from hollow trees from April to November 1991 indicated that there were three generations of sand flies. Data from light trap collections from 1986 through 1989 indicated that similar seasonal cycles occurred during previous years. At this site, we hypothesize that L. shannoni undergoes facultative diapause. Two isolates of VSNJ virus were obtained from female sand flies collected in May and June of 1991. We believe that the virus overwinters in immature L. shannoni and that transovarially infected sand flies emerging each spring initiate a summer amplification cycle in swine on Ossabaw Island.

摘要

在佐治亚州的奥萨巴岛研究了香农白蛉（Lutzomyia shannoni Dyar）的种群动态，以进一步确定该物种在新泽西型水疱性口炎（VSNJ）病毒动物流行病学中的作用。1991年4月至11月，每两个月从空心树中采集一次出洞的白蛉，结果表明有三代白蛉。1986年至1989年光诱捕收集的数据表明，前几年也出现了类似的季节性周期。在这个地点，我们假设香农白蛉会经历兼性滞育。从1991年5月和6月采集的雌性白蛉中获得了两株VSNJ病毒分离株。我们认为该病毒在未成熟的香农白蛉体内越冬，每年春天出现的经卵感染的白蛉在奥萨巴岛的猪群中引发夏季增殖循环。