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Patience is not always a virtue: effects of terrain complexity on the host-seeking behaviour of adult blacklegged ticks, Ixodes scapularis, in the presence of a stationary host.
Medical and Veterinary Entomology ( IF 1.6 ) Pub Date : 2020-03-30 , DOI: 10.1111/mve.12440
T R Curtis 1, 2 , M Shi 3 , X Qiao 3
Affiliation  

Blacklegged ticks, Ixodes scapularis Say (Acari: Ixodidae), are the primary vectors of Lyme disease in the U.S.A. In this study, adult ticks were observed on public trails exhibiting increasing levels of terrain complexity with a potential host nearby. The goal of this study was to (a) examine the extent to which adult ticks may actively search (vs. sit‐and‐wait) for a nearby host, (b) determine whether or not ticks could locate the position of the host in natural conditions and (c) determine the role of terrain complexity on the distances ticks travelled in a short period of time (30 min). Results indicate that, when a potential stationary host is within 50 cm, ticks will utilize an active‐search strategy. The majority of ticks moved in the direction of the host in natural conditions. Finally, ticks in a less complex terrain were more active and travelled greater horizontal distances than ticks in a more complex terrain. In conclusion, the use of an active‐search approach would likely increase the foraging success of ticks, especially in terrains with minimal complexity, near host animals that have stopped to rest or feed, reinforcing that humans should be vigilant about checking for ticks after being outdoors.

中文翻译:

耐心并不总是一种美德:在固定的宿主存在的情况下,地形复杂性对成年黑腿tick(肩x)的宿主寻求行为的影响。

黑腿tick,II说(Acari:Ixodidae),是美国莱姆病的主要媒介。在这项研究中,在公共步道上观察到了成年s,表现出复杂的地形水平,附近有潜在宿主。这项研究的目的是(a)检查成年s的活跃程度(相对于坐下来等待),以寻找附近的寄主;(b)确定tick是否可以在附近找到寄主的位置。自然条件(c)确定地形复杂性对短时间(30分钟)内行进的tick的作用。结果表明,当潜在的静止宿主在50厘米之内时,壁虱将利用主动搜索策略。在自然条件下,大多数tick都朝着宿主的方向移动。最后,与较复杂地形相比,较不复杂地形中的壁虱更活跃,并且行进更大的水平距离。总之,使用主动搜索方法可能会提高of的觅食成功率,特别是在复杂程度最低的地形中,停下来休息或进食的宿主动物附近,从而增强了人类对被being后检查checking的警惕性。在户外。
更新日期:2020-03-30
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