Blosser Erik M, Stenn Tanise, Acevedo Carolina, Burkett-Cadena Nathan D
Florida Medical Entomology Laboratory, Entomology and Nematology Department, University of Florida, 200 9(th) St. SE, Vero Beach, FL 32962, USA.
Florida Medical Entomology Laboratory, Entomology and Nematology Department, University of Florida, 200 9(th) St. SE, Vero Beach, FL 32962, USA.
Acta Trop. 2016 Dec;164:352-359. doi: 10.1016/j.actatropica.2016.10.001. Epub 2016 Oct 3.
Culex (Melanoconion) iolambdis (Dyar, 1918) is a mosquito (Diptera: Culicidae) species found throughout much of tropical America, including southern Florida. Relatively few reports are available regarding the ecology of Cx. iolambdis, despite its widespread distribution and putative involvement in transmission of Venezuelan equine encephalitis virus. To quantify habitat and host utilization, adults of Cx. iolambdis were sampled from resting shelters at a field site in Vero Beach, Florida, over a 12-month period. Culex iolambdis (1109 males, 3072 females) constituted more than half (56.76%) of all mosquitoes sampled (24 species) and was active year-round. Unfed females and gravid females of Cx. iolambdis were significantly more abundant in mangrove habitat, while males and blood-fed females were not. PCR-based bloodmeal analysis of 305 females revealed that Cx. iolambdis has very wide host breadth, feeding on birds (37.0% overall), reptiles (26.6%), amphibians (23.3%) and mammals (13.1%). Green heron (Butorides virescens), Southern leopard frog (Lithobates sphenocephala) and American alligator (Alligator mississippiensis) were the most commonly fed upon hosts. Bloodmeals from different host classes varied significantly with season, suggesting that Cx. iolambdis may play a role in the amplification and epidemic transmission of zoonotic arboviruses affecting human health.
伊奥兰布迪斯库蚊（Culex (Melanoconion) iolambdis (戴尔，1918年)）是一种蚊子（双翅目：蚊科），在包括佛罗里达州南部在内的热带美洲大部分地区都有发现。尽管伊奥兰布迪斯库蚊分布广泛且可能参与委内瑞拉马脑炎病毒的传播，但关于其生态学的报道相对较少。为了量化其栖息地和宿主利用情况，在佛罗里达州维罗海滩的一个野外地点，对伊奥兰布迪斯库蚊的成虫进行了为期12个月的休息场所采样。伊奥兰布迪斯库蚊（1109只雄性，3072只雌性）占所有采样蚊子（24种）的一半以上（56.76%），且全年都有活动。伊奥兰布迪斯库蚊的未进食雌蚊和孕蚊在红树林栖息地明显更为丰富，而雄蚊和已吸血雌蚊则不然。对305只雌蚊进行的基于PCR的血餐分析表明，伊奥兰布迪斯库蚊的宿主范围非常广泛，以鸟类（总体占37.0%）、爬行动物（26.6%）、两栖动物（23.3%）和哺乳动物（13.1%）为食。绿鹭（Butorides virescens）、南方豹蛙（Lithobates sphenocephala）和美国短吻鳄（Alligator mississippiensis）是最常被叮咬的宿主。不同宿主类别的血餐随季节有显著差异，这表明伊奥兰布迪斯库蚊可能在影响人类健康的人畜共患虫媒病毒的扩增和流行传播中发挥作用。
