Alameda County Department of Environmental Health, Vector Control Services District, Alameda, CA 94502,
Alameda County Department of Environmental Health, Vector Control Services District, Alameda, CA 94502.
J Vector Ecol. 2022 Dec;47(2):188-194. doi: 10.52707/1081-1710-47.2.188.
The movement of and adult ticks down a hill slope under natural conditions was investigated using the mark-release-recapture (MRR) method. We evaluated the movement of host-seeking adult ticks down a hill slope to determine if ticks travel downhill from an uphill area to trail margins below. During the tick seasons in 2016-2018, the ticks were collected by flagging, marked with paint, released at a predetermined location, and recaptured by weekly flagging. Of the 188 female and 114 male marked and released 30 m above the trail in 2016, 11 (5.8%) females and one (0.9%) male were recaptured at the trail. In 2017, of the 71 female and 52 male , none were recaptured. In 2018, nine (3.6%) female and one (0.4%) male were recaptured of the 247 female and 287 males marked and released. Fifteen (18.5%) female and six (7.3%) male were recaptured of the 81 females and 82 males marked and released in 2017. The trail deterred further movement with only 0.6% of and 8.3% of recaptured on the opposite side of the trail. This study demonstrated that some and adults found along the uphill side of trails may have originated from an area 30 m from the trail margin, some travelling at a rate of 1.6-1.9 m/day under natural conditions in chaparral.
在自然条件下，采用标记-释放-再捕获 (MRR) 方法研究了 和 成蜱沿山坡向下的运动。我们评估了宿主寻找的成蜱沿山坡向下的运动，以确定蜱是否从上坡区向下坡区移动到下面的小径边缘。在 2016-2018 年的蜱季，通过标记、用油漆标记、在预定位置释放并通过每周标记重新捕获来收集蜱。在 2016 年，在小径上方 30 米处标记和释放的 188 只雌性和 114 只雄性 中，有 11 只（5.8%）雌性和 1 只（0.9%）雄性在小径上被捕获。在 2017 年，没有一只 被捕获。在 2018 年，在标记和释放的 247 只雌性和 287 只雄性中，有 9 只（3.6%）雌性和 1 只（0.4%）雄性被捕获。在标记和释放的 81 只雌性和 82 只雄性中，有 15 只（18.5%）雌性和 6 只（7.3%）雄性被捕获。小径阻止了进一步的运动，只有 0.6%的 和 8.3%的 在小径另一侧被捕获。这项研究表明，在小径上坡侧发现的一些 和 成虫可能起源于距小径边缘 30 米的区域，在自然条件下的矮灌丛中，有些以每天 1.6-1.9 米的速度移动。
