INCREASING DENSITY AND BORRELIA-BURGDORFERI INFECTION OF DEER-INFESTING IXODES-DAMMINI (ACARI, IXODIDAE) IN MARYLAND
INCREASING DENSITY AND BORRELIA-BURGDORFERI INFECTION OF DEER-INFESTING IXODES-DAMMINI (ACARI, IXODIDAE) IN MARYLAND
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DOI：
10.1093/jmedent/30.5.858
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发表时间：
1993-09-01
影响因子：
2.1
通讯作者：
SCOTT, TW
中科院分区：
文献类型：
--
作者：
AMERASINGHE, FP;BREISCH, NL;SCOTT, TW
作为1989年研究的后续，1991年11月进行了全州范围内的德氏硬蜱调查。总共从22个检查站（该州23个县中的22个县每个县1个）处理的922只猎人杀死的白尾鹿中收集了3,434只成年蜱。采集的雄性蜱虫显著多于雌性蜱虫。蜱虫侵扰是显着较重的公鹿比母鹿。蜱虫分布模式与1989年相似，阿巴拉契亚地区的患病率（蜱虫感染鹿的百分比）和丰度（每只鹿的平均蜱虫）较低，皮埃蒙特的患病率和丰度值中等，西部和东部沿海平原地区的患病率和丰度值较高。蜱感染伯氏疏螺旋体螺旋体的模式（通过多克隆免疫荧光测定）与蜱分布模式相似。总体而言，1991年蜱虫流行率和丰度高于1989年，蜱虫螺旋体感染率也高于1989年。蜱虫流行率对6个选定的物理和生物参数（海拔，降雨量，夏季和冬季温度，林地的百分比，鹿密度）的多元回归分析显示，在1989年和海拔高度仅在1991年的降雨量和海拔高度的显着关系。在东部沿海平原地区的卡罗琳县和多切斯特县进行的一项更广泛的研究（1989年，该研究显示，在蜱虫普遍丰富的地区，蜱虫密度指数异常低）表明，I.达米尼在卡罗琳很有地位，但在多切斯特县却没有。
A statewide survey of Ixodes dammini Spielman was done in November 1991 as a follow-up to a study in 1989. In total, 3,434 adult ticks were collected from 922 hunter-killed white-tailed deer processed at 22 check stations (1 per county in 22 of 23 counties in the state). Significantly more male than female ticks were collected. Tick infestation was significantly heavier on male than female deer. The pattern of tick distribution was similar to that in 1989, with low prevalence (percentage tick-infested deer) and abundance (mean ticks per deer) in the Appalachian region, moderate values in the Piedmont, and high values in the western and eastern Coastal Plains regions. The pattern of tick infection with Borrelia burgdorferi spirochetes (determined by polyclonal immunofluorescence assay) was similar to the tick distributional pattern. Overall, tick prevalence and abundance were higher in 1991 than in 1989, as was the spirochete infection rate in ticks. Multiple regression analysis of tick prevalence against six selected physical and biotic parameters (elevation, rainfall, summer and winter temperature, percentage of forest land, deer density) showed a significant relationship with rainfall and elevation in 1989 and elevation alone in 1991. A more extensive study in Caroline and Dorchester counties in the eastern Coastal Plains region (which showed exceptionally low tick density indices in a generally tick-abundant region in 1989) demonstrated that I. dammini was well established in Caroline but not in Dorchester County.