期刊
ECOLOGY LETTERS
卷 17, 期 11, 页码 1464-1477出版社
WILEY
DOI: 10.1111/ele.12355
关键词
Adaptive evolution; colonisation; hybridisation; introgression; invasion genetics; phylogenetic meta-analysis; polyploidy; range expansion; weeds
类别
资金
- NSF [DEB 0716868, DEB 1257965, DEB 1146203]
- Direct For Biological Sciences
- Division Of Environmental Biology [1257965] Funding Source: National Science Foundation
- Division Of Environmental Biology
- Direct For Biological Sciences [1433886] Funding Source: National Science Foundation
The hypothesis that interspecific hybridisation promotes invasiveness has received much recent attention, but tests of the hypothesis can suffer from important limitations. Here, we provide the first systematic review of studies experimentally testing the hybridisation-invasion (H-I) hypothesis in plants, animals and fungi. We identified 72 hybrid systems for which hybridisation has been putatively associated with invasiveness, weediness or range expansion. Within this group, 15 systems (comprising 34 studies) experimentally tested performance of hybrids vs. their parental species and met our other criteria. Both phylogenetic and non-phylogenetic meta-analyses demonstrated that wild hybrids were significantly more fecund and larger than their parental taxa, but did not differ in survival. Resynthesised hybrids (which typically represent earlier generations than do wild hybrids) did not consistently differ from parental species in fecundity, survival or size. Using meta-regression, we found that fecundity increased (but survival decreased) with generation in resynthesised hybrids, suggesting that natural selection can play an important role in shaping hybrid performance - and thus invasiveness - over time. We conclude that the available evidence supports the H-I hypothesis, with the caveat that our results are clearly driven by tests in plants, which are more numerous than tests in animals and fungi.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据