Non-native species are part of almost every biological community worldwide, yet numbers of species establishments have an uneven global distribution. Asymmetrical exchanges of species between regions are likely influenced by a range of mechanisms, including propagule pressure, native species pools, environmental conditions and biosecurity. While the importance of different mechanisms is likely to vary among invasion stages, those occurring prior to establishment (transport and introduction) are difficult to account for. We used records of unintentional insect introductions to test (1) whether insects from some biogeographic regions are more likely to be successful invaders, (2) whether the intensity of trade flows between regions determines how many species are intercepted and how many successfully establish, and (3) whether the variables driving successful transport and successful establishment differ.

中文翻译：

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昆虫运输和定居的全球流动：生物地理学、贸易和法规的作用

非本地物种几乎是全世界每个生物群落的一部分，但物种栖息地的数量在全球分布不均。区域之间物种的不对称交换可能受到一系列机制的影响，包括繁殖压力、本地物种库、环境条件和生物安全。虽然不同机制的重要性可能因入侵阶段而异，但在建立之前（运输和引入）发​​生的机制很难解释。我们使用无意昆虫引入的记录来测试（1）来自某些生物地理区域的昆虫是否更有可能成为成功的入侵者，（2）区域之间的贸易流动强度是否决定了有多少物种被拦截以及有多少物种成功定居，以及(3) 推动成功运输和成功建立的变量是否不同。