Personality, space use and tick load in an intrdfoduced population of Siberian chipmunks Tamias sibiricus
Personality, space use and tick load in an intrdfoduced population of Siberian chipmunks Tamias sibiricus
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DOI：
10.1111/j.1365-2656.2010.01659.x
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发表时间：
2010-05-01
影响因子：
4.8
通讯作者：
Chapuis, Jean-Louis
中科院分区：
文献类型：
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作者：
Boyer, Nelly;Reale, Denis;Chapuis, Jean-Louis
P>1。虽然行为可能有助于宿主之间寄生虫负荷的异质性，但行为和寄生虫感染的一致个体差异之间的联系很少受到关注。我们调查了在法国郊区森林中引进的西伯利亚花栗鼠Tamias sibiricus种群中，宿主活动和探索对标记个体硬蜱侵染的作用。通过对73只花栗鼠进行106次洞板试验，对花栗鼠的活动探索特征进行了评估，并以60只花栗鼠的可捕性和陷阱多样性分别作为其活动探索和空间利用的指标。在每次捕获时，我们计算了每只花栗鼠头上的蜱虫总数。我们发现在活动探索，可诱捕性，陷阱多样性和蜱负荷的显着和一致的个体差异，并可以估计这四个变量的个体指数，校正了年，季节，体重和性别的混杂效应。使用路径分析，我们发现了一个间接的影响，活动探索蜱负载：蜱负载增加空间使用，这反过来又是积极的影响，在现场的可捕性。可捕性本身与孔板中的活动探索呈正相关。栖息地类型影响蜱负荷，独立的行为特征。第二个路径模型显示，蜱虫负荷对花栗鼠的个性和可诱捕性没有直接或间接的影响。我们的研究结果表明，主机的个性相关的模式，在空间的使用，可以导致一个非随机的寄生虫分布在主机之间。
P>1. Although behaviours can contribute to the heterogeneity in parasite load among hosts, links between consistent individual differences in behaviour and parasitic infection have received little attention. We investigated the role of host activity and exploration on hard tick infestations of marked individuals in a population of Siberian chipmunks Tamias sibiricus introduced in a suburban French forest over 3 years.2. Individual activity-exploration profiles were assessed from 106 hole-board tests on 73 individuals, and chipmunks' trappability and trap diversity were used respectively as indices of their activity-exploration and space use on a sub-sample of 60 individuals. At each capture, we counted the total number of ticks per head of chipmunk.3. We found significant and consistent individual differences in activity-exploration, trappability, trap diversity and tick load, and could estimate individual indices for these four variables, corrected for confounding effects of year, season, body mass and sex.4. Using a path analysis, we found an indirect effect of activity-exploration on tick load: tick load increased with space use, which in turn was positively affected by trappability in the field. Trappability was itself positively related to activity-exploration in the hole board. Habitat type affected tick load, independently of behavioural traits. A second path model revealed a lack of either direct or indirect influence of tick loads on chipmunks' personality and trappability.5. Our results show that host personality-related patterns in space use can lead to a non-random parasite distribution among hosts.