Fenoglio Stefano, Bonada Núria, Guareschi Simone, López-Rodríguez Manuel J, Millán Andrés, Tierno de Figueroa J Manuel
Department of Science and Technological Innovation, University of Piemonte Orientale, 15121 Alessandria, Italy.
Departament d'Ecologia, Universitat de Barcelona (UB), 08028 Barcelona, Spain
Biol Lett. 2016 Apr;12(4). doi: 10.1098/rsbl.2015.1075.
Biological invasions have increased significantly in response to global change and constitute one of the major causes of biodiversity loss. Insects make up a large fraction of invasive species, in general, and freshwaters are among the most invaded ecosystems on our planet. However, even though aquatic insects dominate most inland waters, have unparalleled taxonomic diversity and occupy nearly all trophic niches, there are almost no invasive insects in freshwaters. We present some hypotheses regarding why aquatic insects are not common among aquatic invasive organisms, suggesting that it may be the result of a suite of biological, ecological and anthropogenic factors. Such specific knowledge introduces a paradox in the current scientific discussion on invasive species; therefore, a more in-depth understanding could be an invaluable aid to disentangling how and why biological invasions occur.
随着全球变化，生物入侵显著增加，成为生物多样性丧失的主要原因之一。一般来说，昆虫在入侵物种中占很大比例，而淡水是地球上受入侵最严重的生态系统之一。然而，尽管水生昆虫在大多数内陆水域占主导地位，拥有无与伦比的分类多样性，几乎占据了所有营养生态位，但淡水中几乎没有入侵昆虫。我们提出了一些关于水生昆虫为何在水生入侵生物中不常见的假说，认为这可能是一系列生物、生态和人为因素造成的。这种具体知识在当前关于入侵物种的科学讨论中引发了一个悖论；因此，更深入的理解可能是解开生物入侵如何发生以及为何发生的宝贵帮助。
