Parasite establishment in host communities
Parasite establishment in host communities
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DOI：
10.1046/j.1461-0248.2003.00501.x
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发表时间：
2003-09-01
期刊：
影响因子：
8.8
通讯作者：
Schauber, EM
中科院分区：
文献类型：
--
作者：
Holt, RD;Dobson, AP;Schauber, EM
许多病原体和寄生虫攻击多种宿主物种，因此它们入侵宿主群落的能力取决于宿主群落的组成。我们提出了一个图形化的等倾线框架，研究疾病建立在两个宿主物种的系统中，基于将宿主物种作为资源。等倾线方法为疾病生态学中两个相关概念的多宿主系统提供了一个自然的概括-寄生虫的基本繁殖率和阈值宿主密度。定性等倾线形状特征的阈值社区配置，允许寄生虫建立。在一般情况下，等倾线形状反映了种间和种内传播的共享寄生虫的相对力量。我们讨论了质量的影响，寄生虫等倾线形状的问题越来越多的关注保护生态学。
Many pathogens and parasites attack multiple host species, so their ability to invade a host community can depend on host community composition. We present a graphical isocline framework for studying disease establishment in systems with two host species, based on treating host species as resources. The isocline approach provides a natural generalization to multi-host systems of two related concepts in disease ecology - the basic reproductive rate of a parasite, and threshold host density. Qualitative isocline shape characterizes the threshold community configurations that permit parasite establishment. In general, isocline shape reflects the relative forces of inter- and intraspecific transmission of shared parasites. We discuss the qualitative implications of parasite isocline shape for issues of mounting concern in conservation ecology.