The number of insect species transported to non-native regions is increasing, and, once established, these invasive insects have serious impacts on the environment and regional economies. Recent research highlights several cases of insect invasions facilitated by symbiotic microbes. Symbioses impact biological invasions, but few reviews have addressed the role of symbiotic microbes in insect invasions. Focusing on the insect–microbial symbiosis, we show the importance of microbial symbionts in determining the pest status of insects at insect–microbial levels, insect–plant–microbial levels, and other multispecific levels. Drawing on examples from different ecosystems, we review the key mechanisms and principles whereby facultative/mutualistic microbes affect insect invasions and coevolve with the invasive insects. We propose a conceptual framework for assessing the role of symbiotic microbes in insect invasions that promises improved risk analyses, spread and impact modeling, and management of invasive ins...

中文翻译：

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共生微生物在昆虫入侵中的作用

运输到非本土地区的昆虫种类数量正在增加，这些入侵昆虫一旦定殖，将对环境和区域经济产生严重影响。最近的研究强调了一些由共生微生物促成的昆虫入侵案例。共生影响生物入侵，但很少有评论讨论共生微生物在昆虫入侵中的作用。专注于昆虫-微生物共生，我们展示了微生物共生体在昆虫-微生物水平、昆虫-植物-微生物水平和其他多特异性水平上确定昆虫害虫状况的重要性。借鉴不同生态系统的例子，我们回顾了兼性/互惠微生物影响昆虫入侵并与入侵昆虫共同进化的关键机制和原则。