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首页> 外文期刊>Parasitology >Phylogenetic structure of host spectra in Palaearctic fleas: Stability versus spatial variation in widespread, generalist species
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Phylogenetic structure of host spectra in Palaearctic fleas: Stability versus spatial variation in widespread, generalist species

机译：古生物跳蚤中宿主光谱的系统发生结构：广泛物种中稳定性与空间变化的关系

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摘要

We investigated spatial variation in the phylogenetic structure of host spectra in fleas parasitic on small mammals. Measures of phylogenetic host specificity ((phylogenetic species clustering (PSC) and phylogenetic species variability (PSV)) varied significantly more between than within flea species, but the proportion of variation which accounted for among-species differences was low. In 13 of 18 common flea species, at least one of the indices of the phylogenetic structure of regional host spectra revealed a significantly positive association with the phylogenetic structure of regional host assemblage, while relationships between PSC or PSV of the regional host spectrum and the distance from either the region of a flea's maximal abundance or latitude were not supported. Overall, results of this study demonstrated that although the degree of phylogenetic host specificity in fleas can be considered as a true attribute of a flea species, it is highly spatially variable, with phylogenetic structure of the surrounding host pool being the main reason behind this variation.
机译：我们调查了寄生在小型哺乳动物上的跳蚤的宿主谱的系统发育结构的空间变化。种间寄主特异性（种系聚类（PSC）和种间变异（PSV））的变化比跳蚤种内变化大，但占种间差异的变异比例很低，在18种常见动物中有13种跳蚤物种中，至少一个区域宿主谱的系统发育结构指标显示出与区域宿主集合的系统发育结构显着正相关，而区域宿主谱的PSC或PSV与距该区域任一区域的距离之间的关系总的来说，这项研究的结果表明，虽然跳蚤的系统发育寄主特异性程度可以认为是跳蚤物种的真实属性，但它在空间上具有很大的可变性，具有跳蚤的系统发育结构。周围主机池是造成这种变化的主要原因。

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