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首页> 外文期刊>Parasitology >Flea infestation reduces the life span of the common vole.
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Flea infestation reduces the life span of the common vole.

机译：跳蚤成虫会减少普通田鼠的寿命。

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Parasitism is often a source of variation in host's fitness components. Understanding and estimating its relative importance for fitness components of hosts is fundamental from physiological, ecological and evolutionary perspectives. Host-parasite studies have often reported parasite-induced reduction of host fecundity, whereas the effect of parasitism on host survival has been largely neglected. Here, we experimentally investigated the effect of infestation by rat fleas (Nosopsyllus fasciatus) on the life span of wild-derived male common voles (Microtus arvalis) bred in captivity. We found that the mean life span of parasitized voles was reduced by 36% compared to control voles. Parasitized voles had a smaller body size, but a relatively larger heart and spleen than control voles. These results indicate an effect of flea infestation on host life span and our findings strongly suggest that ectoparasites should be taken into account in the studies of host population dynamics.
机译：寄生通常是宿主身体健康成分变化的原因。从生理学，生态学和进化学的角度，了解和评估其对宿主健康组成部分的相对重要性至关重要。寄主寄生虫研究经常报告寄生虫诱导的寄主繁殖力降低，而寄生虫对寄主存活的影响却被大大忽略。在这里，我们实验研究了鼠蚤（Nosopsyllus fasciatus）侵染对人工饲养的野生雄性普通田鼠（田鼠）的寿命的影响。我们发现，与对照田鼠相比，被寄生的田鼠的平均寿命减少了36％。寄生的田鼠体型较小，但心脏和脾脏却比对照田鼠大。这些结果表明跳蚤侵染对寄主寿命的影响，我们的发现强烈表明在寄主种群动态研究中应考虑外寄生虫。

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