Herbivores mediate different competitive and facilitative responses of native and invader populations of Brassica nigra
文献类型：SCI/SSCI论文
| 作者 | Oduor A. M. O. ; Strauss S. Y. ; Garcia Y. ; Cascales M. B. ; Gomez J. M. |
| 发表日期 | 2013 |
| 关键词 | Brassica nigra common garden competition conspecific interaction enemy release hypothesis (ERH) evolution of increased competitive ability (EICA) facilitation herbivory heterospecific invasive species native populations rapid evolution plant sapium-sebiferum invasive plant introduced populations centaurea-maculosa biological-control species-diversity insect herbivory rapid evolution north-american enemy release |
| 英文摘要 | Differences in plant and herbivore community assemblages between exotic and native ranges may select for different levels of plant traits in invasive and native populations of plant species. Little is currently known of how herbivores may mediate competitive and facilitative interactions between invasive and native populations of plant species and their plant neighbors. Here, we conducted a common-garden field experiment to test whether invasive and native populations of Brassica nigra differ in phenotypic expressions of growth (biomass and plant height) and reproductive (seed yield) traits under different plant neighbor treatments and ambient vs. reduced level of insect herbivore damage on the B. nigra plants. We found significant interactive effects of plant neighbor treatments, level of insect herbivore damage on B. nigra plants, and invasive status of B. nigra on the phenotypic trait expressions. Plant neighbor treatments had minimal effects on phenotypic trait expressions by invasive populations of B. nigra under either level of insect herbivore damage. In contrast, for native populations of B. nigra, ambient level of insect herbivore damage resulted in plant neighbors facilitating expression of the traits above, while reduced damage resulted in plant neighbors competitively suppressing trait expression. Our results suggest that insect herbivores and plant neighbors interactively shape expression of plant traits in native and exotic ranges of invasive plants. Such interactions could potentially lead to different selection pressures on traits that determine antiherbivore defenses and plant-plant interactions. |
| 出处 | Ecology |
| 卷 | 94 |
| 期 | 10 |
| 页 | 2288-2298 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0012-9658 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/30328]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Oduor A. M. O.,Strauss S. Y.,Garcia Y.,et al. Herbivores mediate different competitive and facilitative responses of native and invader populations of Brassica nigra. 2013. |
入库方式： OAI收割
来源：地理科学与资源研究所
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