Geographic distribution and developmental sites of Aedes albopictus (Diptera: Culicidae) during a Chikungunya epidemic event

被引:133
作者
Delatte, H.
Dehecq, J. S. [1 ,2 ]
Thiria, J. [1 ,2 ]
Domerg, C. [3 ]
Paupy, C. [4 ]
Fontenille, D. [5 ]
机构
[1] IRD, Res Unit 016, Chem IRAT 7, F-97410 St Pierre, La Reunion, France
[2] GIP, DRASS, Serv Prophylaxie Renforcee, Serv Lutte Anti Vectorielle, F-97400 St Denis, Reunion, France
[3] Univ Reunion, CIRAD, UMR Peuplements Vegetaux & Bioagresseurs & Milieu, F-97410 St Pierre, La Reunion, France
[4] IRD, Res Unit 016, Yaounde, Cameroon
[5] IRD, LIN, F-34394 Montpellier, France
关键词
Aedes albopictus; arbovirus; Chikungunya epidemic; geographical repartition; larval ecology;
D O I
10.1089/vbz.2007.0649
中图分类号
R1 [预防医学、卫生学];
学科分类号
1004 ; 120402 ;
摘要
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 Reunion and Mauritius. We report on investigations of the seasonal prevalence, container preferences, and geographic distribution of the species on La Reunion. 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.
引用
收藏
页码:25 / 34
页数:10
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