Delatte H, Dehecq J S, Thiria J, Domerg C, Paupy C, Fontenille D
Research Unit #016, Institut de Recherche pour le Développement (IRD), 7 chemin de l'IRAT, 97410 Saint Pierre, La Réunion, France.
Vector Borne Zoonotic Dis. 2008 Spring;8(1):25-34. doi: 10.1089/vbz.2007.0649.
Aedes albopictus is generally considered to have a low vectorial capacity because of its lack of host specificity. Nevertheless, it has been the sole vector of the Chikungunya virus in recent explosive epidemics on the islands of La Réunion and Mauritius. We report on investigations of the seasonal prevalence, container preferences, and geographic distribution of the species on La Réunion. Ae. albopictus showed strong ecological plasticity. In the warm wet season, small disposable containers were the principal urban breeding site, with 1939 positive containers in 750 houses. In the dry winter season, the species remained abundant throughout the island up to 800 m and was present to a maximum altitude of 1200 m. Natural containers were clearly important in this season, although productive sources were hard to find. The preferred natural developmental sites were bamboo stumps and rock holes, over 357 developmental sites observed in peri-urban and gully areas. Generalized logistic models indicated that the optimum sites contained clear water with high organic content and were situated in sites with moderate shade. Our data will provide input into the models of the epidemiology of the disease and design of vector control programs.
由于缺乏宿主特异性，白纹伊蚊通常被认为其媒介能力较低。然而，在留尼汪岛和毛里求斯岛近期爆发的疫情中，它却成为了基孔肯雅病毒的唯一传播媒介。我们报告了对留尼汪岛该物种的季节性流行情况、容器偏好及地理分布的调查结果。白纹伊蚊表现出很强的生态可塑性。在温暖潮湿的季节，小型一次性容器是主要的城市繁殖场所，在750所房屋中有1939个阳性容器。在干燥的冬季，该物种在全岛海拔800米以下地区仍然大量存在，最高海拔可达1200米。尽管难以找到有繁殖能力的源头，但在这个季节天然容器显然很重要。首选的天然发育场所是竹桩和岩洞，在城郊和沟壑地区观察到超过357个发育场所。广义逻辑模型表明，最佳场所含有清澈且有机物含量高的水，并且位于有适度遮荫的地方。我们的数据将为疾病流行病学模型和病媒控制项目设计提供依据。
