Can Eco-Evo Theory Explain Population Cycles in the Field?

Can Eco-Evo Theory Explain Population Cycles in the Field?
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Eco-Evo 理论可以解释野外的种群周期吗?

DOI:
10.1086/717178
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发表时间:
2022
期刊:
The American Naturalist
影响因子:
--
通讯作者:
Dukic, Vanja
Dukic, Vanja
中科院分区:
--
文献类型:
--
作者:
Dwyer, Greg;Mihaljevic, Joseph R.;Dukic, Vanja

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解释动物种群周期的努力经常引用消费者-资源理论,该理论表明,消费者-资源相互作用本身就可以驱动种群周期。生态进化论认为种群周期部分是由资源中的抗性选择波动驱动的,但生态进化论的支持几乎完全来自实验室的微观世界。在这里,我们问,生态进化论能解释该领域的人口周期吗?我们比较了生态evo模型和经典的“生态只”模型的能力,以解释在insectLymantria dispar,其中昆虫的爆发是由致命的杆状病毒终止的周期数据。我们进行了一个统计比较的能力,生态纯和生态evo模型解释合并数据frommL。病毒爆发周期和杆状病毒流行病(动物流行病)。这两个模型都需要高主机的电阻变化来解释动物流行病的数据,但高主机的生态-进化模型的变化导致一贯准确的预测爆发周期,而在高主机的变化的存在下,生态-唯一的模型可以解释爆发周期,只有通过调用高水平的随机性,这导致高度可变的,往往是不准确的预测爆发周期。我们的工作提供了统计学上的有力证据,表明生态evo模型可以解释该领域的人口周期。
Efforts to explain animal population cycles often invoke consumer-resource theory, which has shown that consumer-resource interactions alone can drive population cycles. Eco-evo theory instead argues that population cycles are partly driven by fluctuating selection for resistance in the resource, but support for eco-evo theory has come almost entirely from laboratory microcosms. Here we ask, Can eco-evo theory explain population cycles in the field? We compared the ability of eco-evo models and classical “eco-only” models to explain data on cycles in the insectLymantria dispar, in which outbreaks of the insect are terminated by a fatal baculovirus. We carried out a statistical comparison of the ability of eco-only and eco-evo models to explain combined data fromL. disparoutbreak cycles and baculovirus epizootics (epidemics in animals). Both models require high host variation in resistance to explain the epizootic data, but high host variation in the eco-evo model leads to consistently accurate predictions of outbreak cycles, whereas in the presence of high host variation the eco-only model can explain outbreak cycles only by invoking high levels of stochasticity, which leads to highly variable and often inaccurate predictions of outbreak cycles. Our work provides statistically robust evidence that eco-evo models can explain population cycles in the field.
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