Keeping the herds healthy and alert: implications of predator control for infectious disease
Keeping the herds healthy and alert: implications of predator control for infectious disease
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DOI：
10.1046/j.1461-0248.2003.00500.x
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发表时间：
2003-09-01
期刊：
影响因子：
8.8
通讯作者：
Dobson, AP
中科院分区：
文献类型：
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作者：
Packer, C;Holt, RD;Dobson, AP
捕食者控制方案的实施通常是为了增加猎物种群的规模。然而，捕食者去除可能被证明是有害的猎物种群，主要是由寄生虫感染，而不是捕食调节。我们开发的微寄生虫和大型寄生虫感染模型，指定的条件下，捕食者去除将（a）增加寄生虫感染的发病率，（B）减少健康个体的数量在猎物人口和（c）减少猎物人口的整体规模。在一般情况下，捕食者去除是更有可能是有害的，当寄生虫是高度致命的，大型寄生虫是高度聚集在他们的猎物，主机是长寿和捕食者选择感染的猎物。
Predator control programmes are generally implemented in an attempt to increase prey population sizes. However, predator removal could prove harmful to prey populations that are regulated primarily by parasitic infections rather than by predation. We develop models for microparasitic and macroparasitic infection that specify the conditions where predator removal will (a) increase the incidence of parasitic infection, (b) reduce the number of healthy individuals in the prey population and (c) decrease the overall size of the prey population. In general, predator removal is more likely to be harmful when the parasite is highly virulent, macroparasites are highly aggregated in their prey, hosts are long-lived and the predators select infected prey.