Walking by Ixodes ricinus ticks:: intrinsic and extrinsic factors determine the attraction of moisture or host odour
Walking by Ixodes ricinus ticks:: intrinsic and extrinsic factors determine the attraction of moisture or host odour
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DOI：
10.1242/jeb.02238
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发表时间：
2006-06-01
影响因子：
2.8
通讯作者：
Randolph, Sarah E.
中科院分区：
文献类型：
--
作者：
Crooks, Emily;Randolph, Sarah E.
在选择的竞技场内，研究了在水平面上由蓖麻硬蜱自发行走，以测试这些蜱是否优先沿湿度梯度向上移动，以及它们是否被吸引向宿主气味，特别是狗耳后部的挥发性物质。比较了高脂肪含量和低脂肪含量以及不同水合状态下蜱虫的反应。能量储备较高的蜱虫更有可能在短距离内水平行走。只有在轻微脱水的情况下，它们才更有可能走向完全饱和的空气，而不是干燥的空气，只有在大气足够潮湿的情况下，它们才有可能走向宿主皮肤分泌的气味。似乎在某些情况下，这种埋伏物种的蜱虫会向宿主气味移动很短的距离。
Spontaneous walking by Ixodes ricinus nymphs in the horizontal plane was investigated within choice arenas to test whether these ticks move preferentially up a humidity gradient, and whether they are attracted towards host odour, specifically volatile substances from the back of a dog's ear. Responses by ticks with high and low fat contents and in different states of hydration were compared. Ticks with higher energy reserves were more likely to walk horizontally over short distances. Only if they were slightly dehydrated were they more likely to walk towards fully saturated air than drier air, and only if the atmosphere was sufficiently wet were they likely to walk towards odour secreted by host skin. It seems that, under certain circumstances, ticks of this ambushing species will move short distances towards host odour.