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首页> 外文期刊>Behavioral Ecology and Sociobiology >Refuge sharing network predicts ectoparasite load in a lizard
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Refuge sharing network predicts ectoparasite load in a lizard

机译：避难所共享网络预测蜥蜴的体外寄生虫负荷

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摘要

Living in social groups facilitates cross-infection by parasites. However, empirical studies on indirect transmission within wildlife populations are scarce. We investigated whether asynchronous overnight refuge sharing among neighboring sleepy lizards, Tiliqua rugosa, facilitates indirect transmission of its ectoparasitic tick, Amblyomma limbatum. We fitted 18 neighboring lizards with GPS recorders, observed their overnight refuge use each night over 3 months, and counted their ticks every fortnight. We constructed a transmission network to estimate the cross-infection risk based on asynchronous refuge sharing frequencies among all lizards and the life history traits of the tick. Although self-infection was possible, the network provided a powerful predictor of measured tick loads. Highly connected lizards that frequently used their neighbors’ refuges were characterized by higher tick loads. Thus, indirect contact had a major influence on transmission pathways and parasite loads. Furthermore, lizards that used many different refuges had lower cross- and self-infection risks and lower tick loads than individuals that used relatively fewer refuges. Increasing the number of refuges used by a lizard may be an important defense mechanism against ectoparasite transmission in this species. Our study provides important empirical data to further understand how indirectly transmitted parasites move through host populations and influence individual parasite loads.
机译：生活在社会群体中有利于寄生虫的交叉感染。但是，关于野生生物种群内部间接传播的实证研究很少。我们调查了相邻的困蜥蜴（Tiliqua rugosa）之间的异步过夜避难所共享是否促进了其寄生寄生tick（Amblyomma limbatum）的间接传播。我们在18个邻近的蜥蜴身上安装了GPS记录仪，在3个月内每晚观察其过夜的避难所，并每两周计算一次它们的tick虫数。我们构建了一个传输网络，以根据所有蜥蜴之间的异步避难所共享频率以及the的生活史特征来估计交叉感染的风险。尽管可以自我感染，但该网络提供了强大的预测滴答负荷预测器。经常使用邻居避难所的高连通性蜥蜴的特征是较高的higher虫负荷。因此，间接接触对传播途径和寄生虫负荷有重大影响。此外，与使用相对较少的避难所的人相比，使用许多不同的避难所的蜥蜴具有较低的交叉感染和自我感染的风险以及较低的tick虫负荷。蜥蜴使用的避难所数量增加可能是该物种抵抗外寄生虫传播的重要防御机制。我们的研究提供了重要的经验数据，以进一步了解间接传播的寄生虫如何通过宿主种群移动并影响单个寄生虫的负荷。

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