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首页> 外文期刊>Parasitology >Species and site contributions to β-diversity in fleas parasitic on the Palearctic small mammals: ecology, geography and host species composition matter the most
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Species and site contributions to β-diversity in fleas parasitic on the Palearctic small mammals: ecology, geography and host species composition matter the most

机译：在PaleAnctic小型哺乳动物上的跳蚤寄生物中的β-多样性物种和现场贡献：生态，地理和宿主物种组合物最多

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摘要

The β-diversity of fleas parasitic on small mammals in 45 regions of the Palearctic was partitioned into species [species contributions to β-diversity (SCBD)] and site ( = assemblage) contributions [local contributions to β-diversity (LCBD)]. We asked what are the factors affecting SCBD and LCBD and tested whether (a) variation in ecological, morphological, life history and geographic traits of fleas can predict SCBD and (b) variation in flea and host community metrics, off-host environmental factors, host species composition of flea assemblages can predict LCBD. We used spatial variables to describe geographic distribution of flea assemblages with various LCBD values. SCBD significantly increased with an increase in abundance and a decrease in phylogenetic host specificity of a flea as well as with size and latitude of its geographic range, but was not associated with any morphological/life history trait. LCBD of flea assemblages did not depend on either flea or host species richness or environmental predictors, but was significantly affected by compositional uniqueness ( = LCBD) of regional host assemblages and variables describing their species composition. In addition, variation in LCBD was also explained by broad-to-moderate-scale spatial variables. We conclude that SCBD of fleas could be predicted via their ecological and geographic traits, whereas LCBD of their assemblages could be predicted via host composition.
机译：将PaleCricc的45个区域的小哺乳动物上的β-多样性分为物种[物种对β-多样性（SCBD）]和网站（=汇编）捐款[β-多样性（LCBD）的贡献[局部贡献]。我们询问了影响SCBD和LCBD的因素是什么，并测试了跳蚤生态，形态，生命历史和地理特征的（a）变异，可以预测跳蚤和寄主社区度量的SCBD和（B）变化，偏离宿主环境因素，跳蚤组合的宿主物种组成可以预测LCBD。我们使用空间变量来描述具有各种LCBD值的跳蚤组装的地理分布。 SCBD随着丰度的增加和跳蚤的系统发育宿主特异性的增加和地理范围的大小和纬度而显着增加，但与任何形态/生命历史特质无关。跳蚤组合的LCBD不依赖于跳蚤或宿主物种丰富性或环境预测因子，但受到描述其物种组成的区域宿主组合的组成唯一度（= LCBD）的显着影响。此外，还通过广泛的尺度空间变量解释了LCBD的变化。我们得出结论，通过其生态和地理特征可以预测跳蚤的SCBD，而通过宿主组合可以预测其组合的LCBD。

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