Linardi P M, Krasnov B R
Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
Med Vet Entomol. 2013 Mar;27(1):49-58. doi: 10.1111/j.1365-2915.2012.01025.x. Epub 2012 Jun 20.
The effects of host-related, parasite-related and environmental factors on the diversity and abundance of two ectoparasite taxa, fleas (Insecta: Siphonaptera) and mites (Acari: Mesostigmata), parasitic on small mammals (rodents and marsupials), were studied in different localities across Brazil. A stronger effect of host-related factors on flea than on mite assemblages, and a stronger effect of environmental factors on mite than on flea assemblages were predicted. In addition, the effects of parasite-related factors on flea and mite diversity and abundance were predicted to manifest mainly at the scale of infracommunities, whereas the effects of host-related and environmental factors were predicted to manifest mainly at the scale of component and compound communities. This study found that, in general, diversity and abundance of flea and mite assemblages at two lower hierarchical levels (infracommunities and component communities) were affected by host-related, parasite-related and environmental factors, and compound communities were affected mainly by host-related and environmental factors. The effects of factors differed between fleas and mites: in fleas, community structure and abundance depended on host diversity to a greater extent than in mites. In addition, the effects of factors differed among parasite assemblages harboured by different host species.
在巴西各地的不同地点，研究了宿主相关、寄生虫相关和环境因素对寄生于小型哺乳动物（啮齿动物和有袋动物）的两种体外寄生虫类群（跳蚤（昆虫纲：蚤目）和螨类（蜱螨亚纲：中气门目））的多样性和丰度的影响。预计宿主相关因素对跳蚤组合的影响比对螨类组合的影响更强，而环境因素对螨类组合的影响比对跳蚤组合的影响更强。此外，预计寄生虫相关因素对跳蚤和螨类多样性及丰度的影响主要在群落内层次尺度上体现，而宿主相关和环境因素的影响预计主要在组分群落和复合群落尺度上体现。本研究发现，总体而言，在两个较低层次水平（群落内层次和组分群落）上，跳蚤和螨类组合的多样性和丰度受到宿主相关、寄生虫相关和环境因素的影响，而复合群落主要受到宿主相关和环境因素的影响。跳蚤和螨类之间因素的影响有所不同：在跳蚤中，群落结构和丰度比在螨类中更大程度地依赖于宿主多样性。此外，不同宿主物种所携带的寄生虫组合之间因素的影响也有所不同。
