CSIRO Data61, Black Mountain, ACT, Australia.
Bio21 Institute, School of Biosciences, University of Melbourne, Melbourne, VIC, Australia.
Pest Manag Sci. 2019 Jan;75(1):134-143. doi: 10.1002/ps.5192. Epub 2018 Oct 30.
By modelling species-environment relationships of pest species, it is possible to understand potential limits to their distributions when they invade new regions, and their likely continued spread. The European earwig, Forficula auricularia, is a non-native invasive species in Australia that has been in the country for over 170 years. However, in the last few decades it has invaded new areas. Unlike in other countries, F. auricularia is a pest species of grain production in Australia. In this study we detail the Australian distribution of this species, adding new samples focused around grain-growing regions. Using this information, we build global species distribution models for F. auricularia to better understand species-environment relationships.
Our models indicate that the distribution of F. auricularia is strongly associated with temperate through to semi-arid environments, a high winter rainfall and pronounced temperature seasonality. We identified regions that hold suitable, but as yet vacant, niche space for Australian populations, suggesting further potential for range expansion. Beyond climate, an index describing human influence on the landscape was important to understand the distribution limits of this pest. We identified regions where there was suitable climate space, but which F. auricularia has not occupied, probably due to low levels of human impact.
Modelling the global distribution of a non-native pest species aided understanding of the regional distribution limits within Australia and highlighted the usefulness of human impact measures for modelling globally invasive insect species. © 2018 Society of Chemical Industry.
通过模拟害虫物种与环境的关系，可以了解它们入侵新地区时分布的潜在限制，以及它们可能的持续扩散。欧洲耳夹子虫（Forficula auricularia）是澳大利亚的一种非本地入侵物种，已经在该国存在了 170 多年。然而，在过去几十年中，它已经入侵了新的地区。与其他国家不同的是，F. auricularia 是澳大利亚粮食生产的害虫。在这项研究中，我们详细描述了该物种在澳大利亚的分布情况，增加了围绕粮食种植区的新样本。利用这些信息，我们构建了 F. auricularia 的全球物种分布模型，以更好地了解物种与环境的关系。
我们的模型表明，F. auricularia 的分布与温带至半干旱环境密切相关，冬季降雨量高，温度季节性明显。我们确定了一些地区拥有适合但尚未被占据的澳大利亚种群生态位空间，表明其进一步扩张的潜力。除了气候，描述人类对景观影响的指数对于理解这种害虫的分布极限也很重要。我们确定了一些有适宜气候空间的地区，但 F. auricularia 尚未占据这些地区，这可能是由于人类影响水平较低。
对非本地害虫物种的全球分布进行建模有助于了解澳大利亚内部的区域分布限制，并突出了人类影响措施在全球入侵昆虫物种建模中的有用性。© 2018 化学工业学会。
