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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Climatic unpredictability and parasitism of caterpillars: Implications of global warming
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Climatic unpredictability and parasitism of caterpillars: Implications of global warming

机译：毛虫的气候不可预测性和寄生性：全球变暖的影响

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Insect outbreaks are expected to increase in frequency and intensity with projected changes in global climate through direct effects of climate change on insect populations and through disruption of community interactions. Although there is much concern about mean changes in global climate, the impact of climatic variability itself on species interactions has been little explored. Here, we compare caterpillar-parasitoid interactions across a broad gradient of climatic variability and find that the combined data in 15 geographically dispersed databases show a decrease in levels of parasitism as climatic variability increases. The dominant contribution to this pattern by relatively specialized parasitoid wasps suggests that climatic variability impairs the ability of parasitoids to track host populations. Given the important role of parasitoids in regulating insect herbivore populations in natural and managed systems, we predict an increase in the frequency and intensity of herbivore outbreaks through a disruption of enemy-herbivore dynamics as climates become more variable.
机译：随着气候变化对昆虫种群的直接影响以及社区相互作用的破坏，预计全球气候将发生变化，预计昆虫暴发的频率和强度将增加。尽管人们对全球气候的平均变化非常关注，但很少探讨气候变化本身对物种相互作用的影响。在这里，我们比较了整个气候变化梯度中毛毛虫-拟寄生虫的相互作用，发现15个地理上分散的数据库中的组合数据显示，随着气候变化性的增加，寄生虫的水平降低了。相对专门的寄生类黄蜂对这种模式的主要贡献表明，气候变异性削弱了寄生类对宿主种群的追踪能力。鉴于寄生虫在调节自然和管理系统中的食草动物种群中的重要作用，我们预测随着气候的变化，食草动物暴发的频率和强度将通过破坏敌方食草动物的动态而增加。

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