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首页> 外文期刊>Parasitology >Heligmosomoides polygyrus reduces infestation of Ixodes ricinus in free-living yellow-necked mice, Apodemus flavicollis.
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Heligmosomoides polygyrus reduces infestation of Ixodes ricinus in free-living yellow-necked mice, Apodemus flavicollis.

机译：Heligmosomoides polygyrus减少了自由活动的黄颈小鼠Apodemus flavicollis的蓖麻线虫侵染。

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摘要

Free-living animals are usually inhabited by a community of parasitic species that can interact with each other and alter both host susceptibility and parasite transmission. In this study we tested the prediction that an increase in the gastrointestinal nematode Heligmosomoides polygyrus would increase the infestation of the tick Ixodes ricinus, in free-living yellow-necked mice, Apodemus flavicollis. An extensive cross-sectional trapping survey identified a negative relationship between H. polygyrus and I. ricinus counter to the prediction. An experimental reduction of the nematode infection through anthelmintic treatment resulted in an increase in tick infestation, suggesting that this negative association was one of cause and effect. Host characteristics (breeding condition and age) and habitat variables also contributed to affect tick infestation. While these results were counter to the prediction, they still support the hypothesis that interactions between parasite species can shape parasite community dynamics in natural systems. Laboratory models may act differently from natural populations and the mechanism generating the negative association is discussed.
机译：自由生活的动物通常居住在一个寄生物种群落中，它们可以相互影响并改变宿主的敏感性和寄生虫传播。在这项研究中，我们测试了以下预测：在自由活动的黄颈小鼠淡水姬鼠中，胃肠线虫Heligmosomoides polygyrus的增加会增加the虱的感染。广泛的横截面诱捕调查确定了多回H. ricinus与预测值之间的负相关。通过驱虫治疗减少线虫感染的实验性结果导致tick虫感染的增加，表明这种负相关性是因果关系之一。寄主的特征（繁殖条件和年龄）和生境变量也影响了tick的侵染。尽管这些结果与预测相反，但它们仍然支持以下假设：寄生虫物种之间的相互作用会影响自然系统中的寄生虫群落动态。实验室模型的行为可能与自然种群不同，并讨论了产生负相关的机制。

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