The role of phylogenetic relatedness on alien plant success depends on the stage of invasion
The role of phylogenetic relatedness on alien plant success depends on the stage of invasion
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DOI：
10.1038/s41477-022-01216-9
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发表时间：
2022-08-11
期刊：
影响因子：
18
通讯作者：
van Kleunen, Mark
中科院分区：
文献类型：
--
作者：
Omer, Ali;Fristoe, Trevor;van Kleunen, Mark
达尔文的归化假说预测成功的外来入侵者与本地物种有远亲关系，而他的适应前假说则预测相反。有人认为，根据入侵阶段（即引进、归化和入侵），这两个假设，现在被称为达尔文的归化难题，都可能成立。我们测试了这一点，通过分析是否引进种植的可能性，以及随后阶段的归化和传播（即成为入侵）的物种外来南部非洲与他们的系统发育距离本地区的本地植物群。虽然物种更有可能被引入种植，如果他们是远相关的本地植物群，随后归化的概率较高的物种密切相关的本地植物群。此外，成为入侵的可能性更高的归化物种远相关的本地植物群。这些结果在三种不同的系统发育距离度量中是一致的。我们的研究揭示了与本地植物群的系统发育距离与外来物种入侵成功之间的关系从一个入侵阶段到另一个阶段是变化的。本文考察了本地植物和外来植物之间的关系如何改变入侵的性质，发现入侵的阶段和最终成功与系统发育关系有着内在的联系。
Darwin's naturalization hypothesis predicts successful alien invaders to be distantly related to native species, whereas his pre-adaptation hypothesis predicts the opposite. It has been suggested that depending on the invasion stage (that is, introduction, naturalization and invasiveness), both hypotheses, now known as Darwin's naturalization conundrum, could hold true. We tested this by analysing whether the likelihood of introduction for cultivation, as well as the subsequent stages of naturalization and spread (that is, becoming invasive) of species alien to Southern Africa are correlated with their phylogenetic distance to the native flora of this region. Although species are more likely to be introduced for cultivation if they are distantly related to the native flora, the probability of subsequent naturalization was higher for species closely related to the native flora. Furthermore, the probability of becoming invasive was higher for naturalized species distantly related to the native flora. These results were consistent across three different metrics of phylogenetic distance. Our study reveals that the relationship between phylogenetic distance to the native flora and the success of an alien species changes from one invasion stage to the other.This paper examines how the relationship between native and alien plants changes the nature of an invasion, finding that the stages, and ultimate success, of an invasion are intrinsically linked to the phylogenetic relationship.