Mitrani Department of Desert Ecology, Swiss Institute for Dryland Environmental and Energy Research, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, 8499000Midreshet Ben-Gurion, Israel.
Laboratory of Macroecology and Biogeography of Invertebrates, Saint-Petersburg State University, 7/9 University Emb., 199034Saint-Petersburg, Russian Federation.
Parasitology. 2021 May;148(6):685-695. doi: 10.1017/S0031182021000299. Epub 2021 Feb 15.
We studied patterns of compositional, functional, and phylogenetic α- and β-diversity in flea and gamasid mite infracommunities of small Siberian mammals, taking into account host-associated (species) and environmental (biome or sampling period) factors. We asked: (a) How do these factors and their interactions affect infracommunity diversity? (b) Does infracommunity composition, in terms of species, traits, and phylogenetic lineages, deviate from random? (c) Are species, traits, and phylogenetic lineages in infracommunities clustered or overdispersed?, and (d) Do patterns of diversity differ between the three diversity facets and/or the two ectoparasite taxa? We found that the α-diversity of infracommunities was strongly affected by host species, biome, and sampling period. The highest proportion of infracommunity diversity in both taxa was associated with the interaction between either host species and biome or host species and sampling period. Infracommunities of both taxa within, as well as between, host species, biomes, and sampling periods were characterized by the clustering of species, traits and lineages. The patterns of the effects of host species, biome, and sampling period on infracommunity diversity were congruent among the three diversity facets in both fleas and mites. We conclude that the assembly patterns in ectoparasite infracommunities mirror those characteristics of component and compound communities.
我们研究了小型西伯利亚哺乳动物的跳蚤和革螨次群落的组成、功能和系统发育α多样性和β多样性的模式，同时考虑了宿主相关（物种）和环境（生物群落或采样期）因素。我们提出了以下问题：（a）这些因素及其相互作用如何影响次群落多样性？（b）次群落的组成（物种、特征和系统发育谱系）是否偏离随机？（c）物种、特征和系统发育谱系在次群落中是聚集还是过度分散？（d）多样性的模式在三个多样性方面和/或两种外寄生虫类群之间是否存在差异？我们发现，次群落的α多样性受到宿主物种、生物群落和采样期的强烈影响。在这两个类群中，次群落多样性的最高比例与宿主物种和生物群落或宿主物种和采样期之间的相互作用有关。在宿主物种、生物群落和采样期内以及之间的两个类群的次群落中，物种、特征和谱系都表现出聚类。宿主物种、生物群落和采样期对三个多样性方面和两个外寄生虫类群的次群落多样性的影响模式是一致的。我们得出结论，外寄生虫次群落的组装模式反映了组成和复合群落的特征。
