班氏吴策线虫（丝虫目：盘尾丝虫科）感染性幼虫在媒介波利尼西亚伊蚊（双翅目：蚊科）体内的行为与寄生虫传播的关系

Behavior of Wuchereria bancrofti (Filariidea: Onchocercidae) infective larvae in the vector Aedes polynesiensis (Diptera:Culicidae) in relation to parasite transmission.

作者信息

Lardeux F, Cheffort J

机构信息

Institut Français de Recherche Scientifique pour le Développement en Coopération B.P. 529, Papeete, Tahiti, French Polynesia.

出版信息

J Med Entomol. 1996 Jul;33(4):516-24. doi: 10.1093/jmedent/33.4.516.

DOI:10.1093/jmedent/33.4.516

Abstract

In French Polynesia, Aedes polynesiensis Marks is the major vector of human filariasis caused by subperiodic Wuchereria bancrofti (Cobbold). Factors affecting transmission of infective larvae from vector to humans were assessed. The 66-100% loss of infective larvae during a blood meal was independent of the initial vector parasite burden. Infective larvae were able to migrate to the mouthparts during a blood meal. Blood feeding by mosquitoes to repletion was one important aspect in the escape of larvae. Infective larvae were not transmitted (lost) without a blood meal and may move in the vector's body. Ae. polynesiensis may retain infectivity potential during several days and may infect several hosts during one blood meal session or on several gonotrophic cycles. In terms of parasite transmission, these findings were interpreted as efficient adaptations of the filaria to the Ae. polynesiensis biting habits.

摘要

在法属波利尼西亚，波利尼西亚伊蚊是由亚周期型班氏吴策线虫（科博尔德）引起的人类丝虫病的主要传播媒介。对影响感染性幼虫从媒介传播给人类的因素进行了评估。血餐期间66%-100%的感染性幼虫损失与初始媒介寄生虫负荷无关。感染性幼虫在血餐期间能够迁移到口器。蚊子饱血是幼虫逃脱的一个重要方面。没有血餐，感染性幼虫不会传播（损失），且可能在媒介体内移动。波利尼西亚伊蚊可能在数天内保持感染潜力，并且可能在一次血餐过程中或在几个生殖营养周期内感染多个宿主。就寄生虫传播而言，这些发现被解释为丝虫对波利尼西亚伊蚊叮咬习性的有效适应。

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