Reservoir Competence of Native North American Birds for the Lyme Disease Spirochete, Borrelia burgdorferi
Reservoir Competence of Native North American Birds for the Lyme Disease Spirochete, Borrelia burgdorferi
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北美本土鸟类对莱姆病螺旋体、伯氏疏螺旋体的储存能力
DOI：
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发表时间：
2005
影响因子：
2.1
通讯作者：
F. G. Buckley
中科院分区：
文献类型：
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作者：
H. Ginsberg;P. Buckley;Maxon G. Balmforth;E. Zhioua;S. Mitra;F. G. Buckley
摘要莱姆病螺旋体，伯氏疏螺旋体，水库的能力进行了测试，为6种北美本土鸟类：美国知更鸟，灰色猫鹊，棕色画眉，东部towhee，歌雀，和北方红衣主教。在野外实验室中，将通过雾网在Fire Island，NY收集的野生鸟类饲养在水上笼中，并将当地收集的蜱虫幼虫置于鸟类身上，在饱食后从水中收获，并在蜕皮至若虫阶段后通过直接荧光抗体染色检测感染。美国知更鸟是合格的宿主，感染了16.1%的应用于野生捕获鸟类的幼虫，而放置在未感染实验室小鼠上的对照蜱虫的感染率为0%。在实验室中通过若虫喂养感染的知更鸟感染了81.8%的应用幼虫。野外捕获的歌雀感染率为4.8%，若虫取食感染率为21.1%。结果表明，中等水平的水库能力的北方红雀，较低水平的灰色猫，和很少的证据，水库能力的东部towhees或棕色长尾。与实验室感染的鸟类相比，野生捕获鸟类的幼虫感染率较低，这表明感染的鸟类对蜱虫幼虫的感染性具有时间变异性。在白天，大量的幼虫从鸟类身上脱落，因此，这些鸟类在栖息地周围环境中的数量表明，它们可能会将受感染的蜱虫带到草坪和花园。
Abstract Reservoir competence for the Lyme disease spirochete, Borrelia burgdorferi, was tested for six species of native North American birds: American robin, gray catbird, brown thrasher, eastern towhee, song sparrow, and northern cardinal. Wild birds collected by mist netting on Fire Island, NY, were held in a field laboratory in cages over water and locally collected larval ticks were placed on the birds, harvested from the water after engorgement, and tested for infection by direct fluorescent-antibody staining after molting to the nymphal stage. American robins were competent reservoirs, infecting 16.1% of larvae applied to wild-caught birds, compared with 0% of control ticks placed on uninfected laboratory mice. Robins that were previously infected in the laboratory by nymphal feeding infected 81.8% of applied larvae. Wild-caught song sparrows infected 4.8% of applied larvae and 21.1% when infected by nymphal feeding. Results suggest moderate levels of reservoir competence for northern cardinals, lower levels for gray catbirds, and little evidence of reservoir competence for eastern towhees or brown thrashers. Lower infection rates in larvae applied to wild-caught birds compared with birds infected in the laboratory suggest that infected birds display temporal variability in infectiousness to larval ticks. Engorged larvae drop from birds abundantly during daylight, so the abundance of these bird species in the peridomestic environment suggests that they might contribute infected ticks to lawns and gardens.