Kay Brian H, Boyd Ann Marie, Ryan Peter A, Hall Roy A
Queensland Institute of Medical Research, Post Office Royal Brisbane Hospital, School of Molecular and Microbial Sciences, University of Queensland, Brisbane, Queensland, Australia.
Am J Trop Med Hyg. 2007 Mar;76(3):417-23.
Host feeding patterns of mosquitoes were assessed through the identification of 865 blood meals collected from Brisbane during 2000-2001. Under natural conditions, mosquito feeding (including that of Culex annulirostris, Aedes vigilax, and Aedes notoscriptus) was primarily on dogs (37.4%), but also on birds (18.4%), horses (16.8%), brushtail possums (13.3%), humans (11.6%), and cats, flying foxes, and macropods, depending on site. From 1997 to 1999, sera (N=1706) were collected from dogs, cats, horses, flying foxes, and brushtail possums in the Brisbane area and were analyzed by microneutralization assay for antibodies to Ross River virus (RRV) and Barmah Forest virus (BFV). For RRV, all vertebrate species tested had been naturally infected, and seroprevalence varied from 10.5% to 25.5%, whereas for BFV, rates varied between 0% and 11.3%. Brushtail possums were often infected in the field, with 17.6% and 10.7% of wild individuals having antibodies to RRV and BFV, respectively. Horses and flying foxes also had a relatively high prevalence of antibodies to RRV. This study, therefore, provides data to indicate that brushtail possums play a role in the urban transmission of RRV in Brisbane and that horses, when they occur, also fill the same role.
通过对2000 - 2001年期间从布里斯班采集的865份血餐进行鉴定，评估了蚊子的宿主摄食模式。在自然条件下，蚊子（包括环喙库蚊、警惕伊蚊和饰纹伊蚊）主要吸食狗的血液（37.4%），但也吸食鸟类（18.4%）、马（16.8%）、帚尾袋貂（13.3%）、人类（11.6%）以及猫、狐蝠和袋鼠的血液，具体取决于地点。1997年至1999年，从布里斯班地区的狗、猫、马、狐蝠和帚尾袋貂身上采集了血清（N = 1706），并通过微量中和试验分析了针对罗斯河病毒（RRV）和巴马森林病毒（BFV）的抗体。对于RRV，所有测试的脊椎动物物种都曾自然感染，血清阳性率在10.5%至25.5%之间变化；而对于BFV，感染率在0%至11.3%之间。帚尾袋貂在野外经常被感染，分别有17.6%和10.7%的野生个体具有针对RRV和BFV的抗体。马和狐蝠对RRV的抗体阳性率也相对较高。因此，这项研究提供的数据表明，帚尾袋貂在布里斯班RRV的城市传播中起作用，马在出现时也扮演相同的角色。
