Sacramento-Yolo Mosquito and Vector Control District, 8631 Bond Rd., Elk Grove, CA 95624, USA.
J Med Entomol. 2011 Jul;48(4):852-9. doi: 10.1603/me11001.
Larval and nymphal western blacklegged tick, Ixodes pacificus Cooley & Kohls (Acari: Ixodidae), were collected from birds, rodents, and lizards at Quail Ridge Reserve located in Napa County in northwestern California. Species from three vertebrate classes were sampled simultaneously from two transects during two consecutive spring seasons. Feeding larval and nymphal ticks were removed and preserved for counting, examination and testing for the presence of Borrelia burgdorferi Johnson, Schmid, Hyde, Steigerwalt & Brenner. Mean infestations with I. pacificus subadults on lizards were 10.0, on birds 2.9, and on rodents 1.3. I. pacificus larvae (204) collected from 10 avian species and (215) collected from two rodent species were tested for the presence of B. burgdorferi s.s. via real-time polymerase chain reaction. Three B. burgdorferi-infected larvae were taken from two Junco hyemalis and two infected larvae from one Neotoma fuscipes Baird. This is the detection of B. burgdorferi ss in an Ixodes pacificus larvae feeding on a Junco hyemalis L., [corrected] in western North America.
从加利福尼亚州西北部纳帕县的鹌鹑岭保护区的鸟类、啮齿动物和蜥蜴身上采集到幼虫和若虫期的西部黑腿蜱，Ixodes pacificus Cooley & Kohls（蜱螨目：硬蜱科）。在两个连续的春季，从两条样带上同时从三个脊椎动物类群中采集了三个物种。对正在进食的幼虫和若虫期蜱进行了移除和保存，用于计数、检查和检测是否存在伯氏疏螺旋体 Johnson、Schmid、Hyde、Steigerwalt 和 Brenner。在蜥蜴上，太平洋亚成蜱的平均感染率为 10.0，在鸟类上为 2.9，在啮齿动物上为 1.3。从 10 种鸟类中采集的 204 个太平洋亚成蜱幼虫和从 2 种啮齿动物中采集的 215 个太平洋亚成蜱幼虫通过实时聚合酶链反应测试了伯氏疏螺旋体 s.s. 的存在情况。从两只 Junco hyemalis 和一只 Neotoma fuscipes Baird 中取出了三个感染伯氏疏螺旋体的幼虫。这是在北美洲西部的 Junco hyemalis L. 上发现了感染伯氏疏螺旋体 s.s. 的太平洋亚成蜱幼虫。
