Blosser Erik M, Burkett-Cadena Nathan D
Florida Medical Entomology Laboratory, Entomology and Nematology Department, University of Florida, 200 9th St. SE, Vero Beach, FL 32962, USA.
Florida Medical Entomology Laboratory, Entomology and Nematology Department, University of Florida, 200 9th St. SE, Vero Beach, FL 32962, USA.
Acta Trop. 2017 Mar;167:59-63. doi: 10.1016/j.actatropica.2016.12.024. Epub 2016 Dec 21.
Culex (Melanoconion) panocossa is a suspected vector of Venezuelan equine encephalitis virus in Central America. Prior to this report, Cx. panocossa was known from Central America (Belize, Costa Rica, El Salvador, Guatemala, southern Mexico, Panama), northern South America (Colombia, Venezuela) and the Greater Antilles (Cuba and Jamaica). Larvae (n=5) and adults (n=4286) of Cx. panocossa were collected at two locations near Homestead, FL, which indicates substantial established populations of this probable vector species in the continental US. Since larvae of Cx. panocossa are associated with Pistia spp. (water lettuce), the distribution of this mosquito is likely to expand in Florida, where water lettuce is a major invasive plant in freshwater ecosystems. The putative establishment of Cx. panocossa in Florida is of significant concern from a public health perspective, as its proliferation in developed areas could link historically sylvatic transmission foci of Everglades virus with populated centers such as the greater Miami Metropolitan area.
库蚊（黑须库蚊亚属）panocossa是中美洲委内瑞拉马脑炎病毒的疑似传播媒介。在本报告之前，已知panocossa库蚊分布于中美洲（伯利兹、哥斯达黎加、萨尔瓦多、危地马拉、墨西哥南部、巴拿马）、南美洲北部（哥伦比亚、委内瑞拉）以及大安的列斯群岛（古巴和牙买加）。在佛罗里达州霍姆斯特德附近的两个地点采集到了panocossa库蚊的幼虫（n = 5）和成虫（n = 4286），这表明在美国大陆存在大量这种可能的传播媒介物种。由于panocossa库蚊的幼虫与大薸属植物（水浮莲）有关，这种蚊子的分布在佛罗里达州可能会扩大，在那里水浮莲是淡水生态系统中的一种主要入侵植物。从公共卫生角度来看，panocossa库蚊在佛罗里达州的假定定殖令人高度担忧，因为它在发达地区的扩散可能会将大沼泽地病毒历来的森林传播疫源地与迈阿密大都市区等人口密集中心联系起来。
